Airworthiness Directives; Bombardier, Inc., Airplanes, 26334-26341 [2019-11830]
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Federal Register / Vol. 84, No. 109 / Thursday, June 6, 2019 / Rules and Regulations
(l) Material Incorporated by Reference
(1) The Director of the Federal Register
approved the incorporation by reference
(IBR) of the service information listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR
part 51.
(2) You must use this service information
as applicable to do the actions required by
this AD, unless the AD specifies otherwise.
(i) Boeing Service Bulletin 737–53–1246,
Revision 1, dated May 30, 2018.
(ii) [Reserved]
(3) For service information identified in
this AD, contact Boeing Commercial
Airplanes, Attention: Contractual & Data
Services (C&DS), 2600 Westminster Blvd.,
MC 110–SK57, Seal Beach, CA 90740–5600;
phone: 562–797–1717; internet: https://
www.myboeingfleet.com.
(4) You may view this service information
at the FAA, Transport Standards Branch,
2200 South 216th St., Des Moines, WA. For
information on the availability of this
material at the FAA, call 206–231–3195.
(5) You may view this service information
that is incorporated by reference at the
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA, call
202–741–6030, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued in Des Moines, Washington, on May
20, 2019.
Michael Kaszycki,
Acting Director, System Oversight Division,
Aircraft Certification Service.
[FR Doc. 2019–11790 Filed 6–5–19; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2018–0801; Product
Identifier 2017–NM–147–AD; Amendment
39–19632; AD 2019–08–11]
RIN 2120–AA640
Airworthiness Directives; Bombardier,
Inc., Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
AGENCY:
We are superseding
Airworthiness Directive (AD) 2008–24–
14, which applied to all Bombardier,
Inc., Model CL–600–2B19 (Regional Jet
Series 100 & 440) airplanes. AD 2008–
24–14 required revising the instructions
for continued airworthiness to
incorporate certain airworthiness
limitations for the main landing gear
(MLG) trunnion fitting assembly. This
AD requires revising the maintenance or
inspection program, as applicable, to
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SUMMARY:
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incorporate certain airworthiness
limitations (AWLs). This AD also
requires reworking the trunnion fitting
in order to meet new structural safe-life
limits. This AD was prompted by
reports of cracks on the MLG trunnion
fitting during fatigue testing; the
introduction of new AWL tasks with
revised inspection, modification, and
safe-life requirements; and a
determination that the trunnion fitting
lower flange and both forward and aft
bore holes are also subject to fatigue
cracking. We are issuing this AD to
address the unsafe condition on these
products.
DATES: This AD is effective July 11,
2019.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in this AD
as of July 11, 2019.
The Director of the Federal Register
approved the incorporation by reference
of a certain other publication listed in
this AD as of December 19, 2008 (73 FR
73785, December 4, 2008).
ADDRESSES: For service information
identified in this final rule, contact
Bombardier, Inc., 400 Coˆte-Vertu Road
West, Dorval, Que´bec H4S 1Y9, Canada;
Widebody Customer Response Center
North America toll-free telephone 1–
866–538–1247 or direct-dial telephone
1–514–855–2999; fax 514–855–7401;
email ac.yul@aero.bombardier.com;
internet https://www.bombardier.com.
You may view this referenced service
information at the FAA, Transport
Standards Branch, 2200 South 216th St.,
Des Moines, WA. For information on the
availability of this material at the FAA,
call 206–231–3195. It is also available
on the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2018–
0801.
Examining the AD Docket
You may examine the AD docket on
the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2018–
0801; or in person at Docket Operations
between 9 a.m. and 5 p.m., Monday
through Friday, except Federal holidays.
The AD docket contains this final rule,
the regulatory evaluation, any
comments received, and other
information. The address for Docket
Operations (phone: 800–647–5527) is
U.S. Department of Transportation,
Docket Operations, M–30, West
Building Ground Floor, Room W12–140,
1200 New Jersey Avenue SE,
Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: Aziz
Ahmed, Aerospace Engineer, Airframe
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and Mechanical Systems Section, FAA,
New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY
11590; telephone 516–228–7329; fax
516–794–5531.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2008–24–14,
Amendment 39–15758 (73 FR 73785,
December 4, 2008) (‘‘AD 2008–24–14’’).
AD 2008–24–14 applied to all
Bombardier, Inc., Model CL–600–2B19
(Regional Jet Series 100 & 440)
airplanes. The NPRM published in the
Federal Register on October 1, 2018 (83
FR 49317). The NPRM was prompted by
reports of cracks on the MLG trunnion
fitting during fatigue testing; the
introduction of new AWL tasks with
revised inspection, modification, and
safe-life requirements; and a
determination that the trunnion fitting
lower flange and both forward and aft
bore holes are also subject to fatigue
cracking. The NPRM proposed to
require revising the maintenance or
inspection program, as applicable, to
incorporate certain AWLs. The NPRM
also proposed to require reworking the
trunnion fitting in order to meet new
structural safe-life limits. We are issuing
this AD to address fatigue cracking of
the MLG trunnion fitting. Failure of the
MLG trunnion fitting could result in
MLG collapse.
Transport Canada Civil Aviation
(TCCA), which is the aviation authority
for Canada, has issued Canadian AD
CF–2017–27, dated August 2, 2017
(referred to after this as the Mandatory
Continuing Airworthiness Information,
or ‘‘the MCAI’’), to correct an unsafe
condition for certain Bombardier, Inc.,
Model CL–600–2B19 (Regional Jet
Series 100 & 440) airplanes. The MCAI
states:
Cracks on the main landing gear (MLG)
trunnion fitting web discovered during
fatigue testing led to the issuance of
[Canadian] AD CF–2008–21 [which
corresponds to FAA AD 2008–24–14], which
mandated new inspection requirements to
ensure that fatigue cracking of the trunnion
web would be detected and corrected.
Additional fatigue test article findings and
in-service findings have shown that the
trunnion fitting lower flange and both
forward and aft bore holes are also subject to
fatigue cracking. Failure of the main landing
gear trunnion fitting could result in the
collapse of the main landing gear.
Bombardier Inc. has decided to implement a
series of design changes to improve the
fatigue life of the trunnion fitting that is now
a safe-life assembly.
New and revised Airworthiness Limitation
(AWL) tasks for the MLG trunnion fitting
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assembly have been introduced in order to
require new inspection, modification, and
safe-life requirements. This [Canadian] AD
mandates the incorporation of these new and
revised AWL tasks, and removal of the AWL
tasks they replace, to ensure that fatigue
cracking of the MLG trunnion fitting is
detected and corrected. This [Canadian] AD
also requires rework of the trunnion fitting in
order to meet new structural safe-life limits.
You may examine the MCAI in the
AD docket on the internet at https://
www.regulations.gov by searching for
and locating Docket No. FAA–2018–
0801.
Comments
We gave the public the opportunity to
participate in developing this final rule.
The following presents the comments
received on the NPRM and the FAA’s
response to each comment.
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Support for the NPRM
Air Line Pilots Association,
International stated its support for the
NPRM.
Request To Clarify Compliance Times
in Paragraph (l) of the Proposed AD
Air Wisconsin Airlines requested that
we clarify the compliance times for the
rework specified in paragraph (l) of the
proposed AD. Air Wisconsin Airlines
stated that the AWLs do not include
requirements to incorporate the service
information identified in paragraph
(l)(1), (l)(2), and (l)(3) of this AD. Air
Wisconsin Airlines added that
Bombardier Service Bulletin 601R–57–
046, Revision C, dated December 20,
2012, would be required only if
Bombardier Service Bulletin 601R–57–
048, Revision C, dated June 6, 2013, is
done and therefore there is no
requirement to do Bombardier Service
Bulletin 601R–57–046, Revision C,
dated December 20, 2012.
We agree to clarify the compliance
times for the rework required by
paragraph (l) of this AD. We
acknowledge that the compliance times
for incorporating the rework are not
clear. We note that Bombardier Service
Bulletin 601R–57–046, Revision C,
dated December 20, 2012, is not
contingent on whether Bombardier
Service Bulletin 601R–57–048, Revision
C, dated June 6, 2013, is done. As
specified in certain AWLs, ‘‘SB 601R–
57–046 shall be incorporated at or
before 34,900 flight cycles.’’
However, we acknowledge that the
AWLs do not specify requirements to
incorporate Bombardier Service Bulletin
601R–57–047, Revision B, dated
October 2, 2012; and Bombardier
Service Bulletin 601R–57–048, Revision
C, dated June 6, 2013. Since the AWLs
do not specify compliance times for
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incorporating that service information,
operators would need to accomplish the
actions specified in that service
information within 2,000 flight cycles
after the effective date of this AD.
However, we have determined that
the actions specified in Bombardier
Service Bulletin 601R–57–046, Revision
C, dated December 20, 2012;
Bombardier Service Bulletin 601R–57–
047, Revision B, dated October 2, 2012;
and Bombardier Service Bulletin 601R–
57–048, Revision C, dated June 6, 2013;
must be done within the initial
compliance times specified in the
service information, or within 2,000
flight cycles after the effective date of
this AD, whichever occurs later. We
have coordinated with TCCA to clarify
the compliance times for incorporating
the service information. We have added
compliance times to paragraphs (l)(1)
through (l)(3) of this AD accordingly.
Request To Reword Requirement
Paragraph
Air Wisconsin Airlines requested that
paragraph (g) of the proposed AD be
reworded to indicate that paragraph
(f)(1) of AD 2008–24–14 required
incorporation of Bombardier
Maintenance Requirements Manual
(MRM), CSP A–253, Part 2, Appendix B
task AWL 57–21–161, because
Temporary Revision (TR) 2B–2136
(Global alternative method of
compliance (AMOC) with log #14–83)
was superseded by TR 2B–2153 and
later incorporated into a general
revision of Bombardier Maintenance
Requirements Manual (MRM), CSP
A–253, Part 2, Appendix B.
We disagree, because the
requirements specified in paragraph (g)
of this AD are a restatement of the
actions required by paragraph (f)(1) of
AD 2008–24–14 and are still applicable
until the new actions required by
paragraph (i) of this AD are done. The
FAA cannot impose the latest
requirements for a paragraph that has
the initial compliance date of AD 2008–
24–14 since the latest documents were
not available at the time that AD 2008–
24–14 became effective. Additionally,
paragraph (i) of this AD addresses the
commenter’s concerns regarding the
latest documents. For clarity, we have
added a statement to paragraph (i) of
this AD to specify that accomplishing
the revision required by paragraph (i) of
this AD terminates the revision required
by paragraph (g) of this AD.
Request To Clarify Compliance Table
Reference
Air Wisconsin Airlines observed that
the reference to ‘‘table 1 or table 2 to
paragraphs (g) and (j) of this AD, as
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26335
applicable’’ in paragraph (g) was not in
AD 2008–24–14 and therefore is a
change to that paragraph, because
paragraph (j) is a new requirement of the
proposed AD. We infer that the
commenter would like us to clarify the
inclusion of a reference to ‘‘paragraph
(j)’’ within paragraph (g) of the proposed
AD.
We agree to clarify the paragraph in
question. The inclusion of ‘‘paragraph
(j)’’ within paragraph (g) of this AD is
merely as part of the designation of one
of the tables referenced and has no
bearing upon the requirements of
paragraph (g) of this AD. 1 CFR parts 8
and 21 require orderly codification of
regulations. This means that all
elements of an AD, including tables and
figures, must be properly designated. A
table’s designation includes the
sequential number of the table, the
paragraphs to which it applies, and the
location of the table within the AD. The
Office of the Federal Register (OFR)
requires a complete designation when a
table is cross-referenced. Both of the
tables in question are referenced in
paragraphs (g) and (j) of this AD,
therefore, the correct reference is to
‘‘table 1 to paragraphs (g) and (j)’’ and
‘‘table 2 to paragraphs (g) and (j),’’ as
stated in paragraphs (g) and (j) of this
AD. We have not changed this AD with
regard to table designations.
Request To Reword Compliance Time
Air Wisconsin Airlines requested that
we reword the compliance time
statement in paragraph (j)(2) of the
proposed AD to specify the compliance
time instead of referring to the AWL.
The commenter stated that rewording
would simplify the paragraph.
We acknowledge the commenter’s
request. However, the information is
contained in the AWL and we matched
the language in the MCAI by referring to
the AWL. Unless the language in the
MCAI is not enforceable, we generally
do not deviate from the MCAI. We have
not changed this AD in this regard.
Request To Address Missing
Compliance Time
Bombardier requested that we add
paragraph (j)(4) to the proposed AD in
order to align with the instructions in
paragraph B.3. of the MCAI. Bombardier
stated that paragraph (j)(3) of the
proposed AD mentions the compliance
time for the initial inspection but not for
the limitation for AWL 57–21–145 and
AWL 57–21–155. Additionally, Air
Wisconsin Airlines asked whether our
intent in paragraph (j)(3) of the
proposed AD was to ‘‘speak only to the
initial inspections in AWL 57–21–145
and AWL 57–21–155.’’ We infer Air
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Wisconsin Airlines is also requesting
that we address the missing compliance
time statement for the limitation
sections of AWL 57–21–145 and AWL
57–21–155.
We agree with the request to include
the information in paragraph B.3. of the
MCAI in this AD. The compliance time
in paragraph B.3. of the MCAI includes
the grace period for both the initial
inspection and the limitation sections of
the AWLs. We have added paragraph
(j)(4) of this AD to address the
compliance time for the limitation
sections of AWL 57–21–145 and AWL
57–21–155.
Request To Combine ‘‘No Alternative
Actions or Intervals’’ Paragraphs
Air Wisconsin Airlines requested that
we consider combining paragraphs (h)
and (k) of the proposed AD. The
commenter asserted that paragraph (h)
of the proposed AD does not restate the
requirement of paragraph (f)(2) of AD
2008–24–14.
We do not agree to the request to
combine paragraphs (h) and (k) of this
AD because the retained and new
requirements are addressed separately
in this supersedure AD. Paragraph (h) of
this AD restates the requirements of
paragraph (f)(2) of AD 2008–24–14, with
a new exception. Paragraph (h) of this
AD applies to the retained action
required by paragraph (g) of this AD
while paragraph (k) of this AD applies
to the new action required by paragraph
(i) of this AD. We have not changed this
AD in this regard.
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Request To Clarify Figure Reference
Air Wisconsin Airlines requested that
we clarify the reference to ‘‘the AWLs
identified in figure 1 to paragraphs (i)
and (o)’’ in paragraph (o) of the
proposed AD. The commenter remarked
that no AWLs are specifically listed in
paragraph (o) of the proposed AD.
We agree to clarify the figure
reference in paragraph (o) of this AD.
The AWLs are specifically listed in
figure 1, which is designated ‘‘figure 1
to paragraphs (i)(1) and (o).’’ Paragraphs
(i)(1) and (o) both reference that figure.
As previously mentioned, OFR requires
that the designation of any figure in an
AD must include all paragraphs in
which it is referenced, and the full
designation is required in each
reference. The correct designation of the
figure in question is ‘‘figure 1 to
paragraphs (i)(1) and (o),’’ as referenced
in paragraphs (i)(1) and (o) of this AD.
We have not changed this AD with
regard to figure designations.
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Request To Revise Paragraph (l) of the
Proposed AD
Air Wisconsin Airlines requested that
we revise paragraph (l) of the proposed
AD to state that the compliance time for
the limitation section is at the
applicable time specified in the
applicable AWLs.
As stated previously, we have revised
paragraph (l) of this AD to specify the
compliance times for the rework. We
note that the compliance times for the
limitation sections are provided in
paragraphs (j)(2) and (j)(4) of this AD. If
affected parts are removed and replaced
with MLG trunnion, part numbers
601R10068–5 and –6, the inspection
and limitation sections compliance
times of the affected AWLs start from
the installation of the new part numbers
601R10068–5 and –6. After the part
replacement, the inspections and
limitation sections of AWL 57–21–155
and AWL 57–21–161 still apply.
Clarification of Compliance Times
Where the compliance times for the
repetitive inspections and life limits
specified in the TRs identified in figure
1 to paragraphs (i)(1) and (o) of this AD
specify ‘‘landings,’’ those compliance
times are based on the landings of the
affected part. The compliance times for
the initial inspections are specified in
paragraphs (j)(1) and (j)(3) of this AD
and those compliance times are based
on flight cycles or landings of the
airplane. We have clarified the
compliance times in paragraphs (i) and
(j)(3) of this AD.
Conclusion
We reviewed the relevant data,
considered the comments received, and
determined that air safety and the
public interest require adopting this
final rule with the changes described
previously and minor editorial changes.
We have determined that these minor
changes:
• Are consistent with the intent that
was proposed in the NPRM for
addressing the unsafe condition; and
• Do not add any additional burden
upon the public than was already
proposed in the NPRM.
We also determined that these
changes will not increase the economic
burden on any operator or increase the
scope of this final rule.
Related Service Information Under 1
CFR Part 51
Bombardier has issued the following
service information.
• Bombardier Service Bulletin 601R–
57–046, Revision C, dated December 20,
2012, describes the cold working of
fastener holes in the MLG trunnion
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fitting, and related investigative and
corrective actions.
• Bombardier Service Bulletin 601R–
57–047, Revision B, dated October 2,
2012, describes the installation of
forcemate bushings in the MLG
trunnion, and related investigative and
corrective actions.
• Bombardier Service Bulletin 601R–
57–048, Revision C, dated June 6, 2013,
describes the cold working of holes on
the web of the MLG trunnion, and
related investigative and corrective
actions.
Bombardier has also issued the
following temporary revisions (TRs),
which are distinct because they describe
different AWL tasks that apply to
different Canadair part numbers.
• Bombardier Maintenance
Requirements Manual Temporary
Revision 2B–2237, dated June 19, 2014.
This TR describes AWL task 57–21–145,
MLG Mounting Trunnion Fitting
Assembly (Pre-SB 601R–57–047).
• Bombardier Maintenance
Requirements Manual Temporary
Revision 2B–2238, dated June 19, 2014.
This TR describes AWL task 57–21–161,
MLG Mounting Trunnion Web at WS66
(Pre-SB 601R–57–046 or Pre-SB 601R–
57–048).
• Bombardier Maintenance
Requirements Manual Temporary
Revision 2B–2239, dated June 19, 2014.
This TR describes AWL task 57–21–155,
MLG Mounting Trunnion Fitting
Assembly (Pre-SB 601R–57–046 or PreSB 601R–57–048).
• Bombardier Maintenance
Requirements Manual Temporary
Revision 2B–2241, dated June 19, 2014.
This TR describe AWL tasks 57–21–162,
MLG Mounting Trunnion Assembly;
and 57–21–163, MLG Mounting
Trunnion Assembly.
• Bombardier Maintenance
Requirements Manual Temporary
Revision 2B–2242, dated June 19, 2014.
This TR removes certain AWL tasks.
• Bombardier Maintenance
Requirements Manual Temporary
Revision 2B–2246, dated November 7,
2014. This TR describes AWL tasks 57–
21–162, MLG Mounting Trunnion
Assembly; and 57–21–163, MLG
Mounting Trunnion Assembly.
This AD also requires Bombardier
Temporary Revision 2B–2136, dated
May 1, 2008, to the Bombardier CL–
600–2B19 Maintenance Requirements
Manual, Part 2, Appendix B—
Airworthiness Limitations, which the
Director of the Federal Register
approved for incorporation by reference
as of December 19, 2008 (73 FR 73785,
December 4, 2008).
This service information is reasonably
available because the interested parties
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Costs of Compliance
have access to it through their normal
course of business or by the means
identified in the ADDRESSES section.
We estimate that this AD affects 460
airplanes of U.S. registry. We estimate
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the following costs to comply with this
AD:
ESTIMATED COSTS FOR REQUIRED ACTIONS
Action
Labor cost
Retained actions from AD 2008–
24–14.
New actions ....................................
1 work-hour × $85 per hour = $85
Up to 178 work-hours × $85 per
hour = Up to $15,130.
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We have determined that revising the
maintenance or inspection program
takes an average of 90 work-hours per
operator, although we recognize that
this number may vary from operator to
operator. In the past, we have estimated
that this action takes 1 work-hour per
airplane. Since operators incorporate
maintenance or inspection program
changes for their affected fleet(s), we
have determined that a per-operator
estimate is more accurate than a perairplane estimate. Therefore, we
estimate the total cost per operator to be
$7,650 (90 work-hours × $85 per workhour).
We have received no definitive data
that would enable us to provide cost
estimates for the on-condition actions
specified in this AD.
According to the manufacturer, some
or all of the costs of this AD may be
covered under warranty, thereby
reducing the cost impact on affected
individuals. We do not control warranty
coverage for affected individuals. As a
result, we have included all costs in our
cost estimate.
Authority for This Rulemaking
Title 49 of the United States Code
specifies the FAA’s authority to issue
rules on aviation safety. Subtitle I,
section 106, describes the authority of
the FAA Administrator. Subtitle VII:
Aviation Programs, describes in more
detail the scope of the Agency’s
authority.
We are issuing this rulemaking under
the authority described in Subtitle VII,
Part A, Subpart III, Section 44701:
‘‘General requirements.’’ Under that
section, Congress charges the FAA with
promoting safe flight of civil aircraft in
air commerce by prescribing regulations
for practices, methods, and procedures
the Administrator finds necessary for
safety in air commerce. This regulation
is within the scope of that authority
because it addresses an unsafe condition
that is likely to exist or develop on
products identified in this rulemaking
action.
This AD is issued in accordance with
authority delegated by the Executive
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Parts cost
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Cost per product
Cost on U.S. operators
$0
$85 .................................
$39,100.
38,928
Up to $54,058 ................
Up to $24,866,680.
Director, Aircraft Certification Service,
as authorized by FAA Order 8000.51C.
In accordance with that order, issuance
of ADs is normally a function of the
Compliance and Airworthiness
Division, but during this transition
period, the Executive Director has
delegated the authority to issue ADs
applicable to transport category
airplanes and associated appliances to
the Director of the System Oversight
Division.
§ 39.13
Regulatory Findings
(b) Affected ADs
This AD replaces AD 2008–24–14,
Amendment 39–15758 (73 FR 73785,
December 4, 2008) (‘‘AD 2008–24–14’’).
We determined that this AD will not
have federalism implications under
Executive Order 13132. This AD will
not have a substantial direct effect on
the States, on the relationship between
the national government and the States,
or on the distribution of power and
responsibilities among the various
levels of government.
For the reasons discussed above, I
certify that this AD:
1. Is not a ‘‘significant regulatory
action’’ under Executive Order 12866;
2. Is not a ‘‘significant rule’’ under the
DOT Regulatory Policies and Procedures
(44 FR 11034, February 26, 1979);
3. Will not affect intrastate aviation in
Alaska; and
4. Will not have a significant
economic impact, positive or negative,
on a substantial number of small entities
under the criteria of the Regulatory
Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation
safety, Incorporation by reference,
Safety.
Adoption of the Amendment
Accordingly, under the authority
delegated to me by the Administrator,
the FAA amends 14 CFR part 39 as
follows:
PART 39—AIRWORTHINESS
DIRECTIVES
1. The authority citation for part 39
continues to read as follows:
■
Authority: 49 U.S.C. 106(g), 40113, 44701.
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[Amended]
2. The FAA amends § 39.13 by
removing Airworthiness Directive (AD)
2008–24–14, Amendment 39–15758 (73
FR 73785, December 4, 2008), and
adding the following new AD:
■
2019–08–11 Bombardier, Inc.: Amendment
39–19632; Docket No. FAA–2018–0801;
Product Identifier 2017–NM–147–AD.
(a) Effective Date
This AD is effective July 11, 2019.
(c) Applicability
This AD applies to Bombardier, Inc.,
Model CL–600–2B19 (Regional Jet Series 100
& 440) airplanes, certificated in any category,
serial numbers 7002 and subsequent.
(d) Subject
Air Transport Association (ATA) of
America Code 57, Wings.
(e) Reason
This AD was prompted by reports of cracks
on the main landing gear (MLG) trunnion
fitting during fatigue testing; the introduction
of new airworthiness limitation (AWL) tasks
with revised inspection, modification, and
safe-life requirements; and a determination
that the trunnion fitting lower flange and
both forward and aft bore holes are also
subject to fatigue cracking. We are issuing
this AD to address fatigue cracking of the
MLG trunnion fitting. Failure of the MLG
trunnion fitting could result in MLG collapse.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Retained Revision of Airworthiness
Limitation Section With No Changes
This paragraph restates the requirements of
paragraph (f)(1) of AD 2008–24–14, with no
changes. Within 30 days after December 19,
2008 (the effective date of AD 2008–24–14),
revise the Airworthiness Limitations Section
(ALS) of the Instructions for Continued
Airworthiness to incorporate AWL 57–21–
161, as identified in Bombardier Temporary
Revision 2B–2136, dated May 1, 2008, to the
Bombardier CL–600–2B19 Maintenance
Requirements Manual, Part 2, Appendix B—
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Federal Register / Vol. 84, No. 109 / Thursday, June 6, 2019 / Rules and Regulations
Airworthiness Limitations. The initial
compliance time for the task starts from the
applicable time specified in table 1 to
paragraphs (g) and (j) of this AD or table 2
to paragraphs (g) and (j) of this AD, as
applicable. Repeat the inspection thereafter
at the applicable interval specified in
Bombardier Temporary Revision 2B–2136,
dated May 1, 2008.
BILLING CODE 4910–13–P
Table 1 to paragraphs (g) and U)- Pre-modsum TC601R15827 airplanes
If the airplane has accumulated as
of December 19, 2008 (the effective
date of AD 2008-24-14}23,500 or fewer total flight cycles
Then phase in the initial inspectionPrior to the accumulation of 25,000 total
flight cycles.
23,501 to 25,000 total flight cycles
Prior to the accumulation of 26,000 total
flight cycles, or within 1,500 flight cycles
after December 19, 2008 (the effective date of
AD 2008-24-14), whichever occurs first.
25,001 to 26,000 total flight cycles
Prior to the accumulation of 26,500 total
flight cycles, or within 1,000 flight cycles
after December 19, 2008 (the effective date of
AD 2008-24-14), whichever occurs first.
Within 500 flight cycles after December 19,
2008 (the effective date of AD 2008-24-14).
26,001 or more total flight cycles
Table 2 to paragraphs (g) and U)- Post-modsum TC601R15827 airplanes
If the airplane has accumulated as
Prior to the accumulation of 17,333 total flight
cycles, or within 1,000 flight cycles after
December 19, 2008 (the effective date of AD
2008-24-14), whichever occurs first.
16,668 to 17,333 total flight cycles
Prior to the accumulation of 17,666 total flight
cycles, or within 666 flight cycles after
December 19, 2008 (the effective date of AD
2008-24-14), whichever occurs first.
17,334 or more total flight cycles
Within 333 flight cycles after December 19,
2008 (the effective date of AD 2008-24-14).
khammond on DSKBBV9HB2PROD with RULES
(h) Retained No Alternative Actions or
Intervals With New Exception
This paragraph restates the requirements of
paragraph (f)(2) of AD 2008–24–14, with a
new exception: Except as required by
paragraph (i) of this AD, after accomplishing
the actions specified in paragraph (g) of this
AD, no alternative inspections or inspection
intervals may be used unless the inspection
or inspection interval is approved as an
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15:44 Jun 05, 2019
Jkt 247001
alternative method of compliance (AMOC) in
accordance with the procedures specified in
paragraph (p)(1) of this AD.
(i) New Requirement of This AD: Revision of
Existing Maintenance or Inspection Program
(1) Within 60 days after the effective date
of this AD: Revise the existing maintenance
or inspection program, as applicable, by
incorporating the AWL tasks specified in
figure 1 to paragraphs (i)(1) and (o) of this
PO 00000
Frm 00008
Fmt 4700
Sfmt 4700
AD. Except as specified in paragraph (j) of
this AD, the initial compliance times for the
tasks are at the applicable times specified in
the temporary revisions (TRs) identified in
figure 1 to paragraphs (i)(1) and (o) of this
AD, or within 60 days after the effective date
of this AD, whichever occurs later. When the
information in AWL tasks identified in the
TRs specified in figure 1 to paragraphs (i)(1)
and (o) of this AD has been included in the
general revisions of Bombardier Maintenance
E:\FR\FM\06JNR1.SGM
06JNR1
ER06JN19.000</GPH>
15,668 to 16,667 total flight cycles
ER06JN19.001</GPH>
of December 19,2008 (the effective
date of AD 2008-24-14}Then phase in the initial inspection15,667 or fewer total flight cycles
Prior to the accumulation of 16,667 total flight
cycles.
Federal Register / Vol. 84, No. 109 / Thursday, June 6, 2019 / Rules and Regulations
(2) Within 60 days after the effective date
of this AD: Revise the existing maintenance
or inspection program, as applicable, by
removing the AWL tasks specified in figure
2 to paragraph (i)(2) of this AD.
BILLING CODE 4910–13–C
(4) For AWL 57–21–145 and AWL 57–21–
155, the compliance times for the limitation
sections is at the applicable time specified in
AWL 57–21–145 and AWL 57–21–155 or
within 2,000 flight cycles after the effective
date of this AD, whichever occurs later.
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(j) New Requirement of This AD: Initial
Compliance Times for AWL Tasks
(1) For AWL 57–21–161, the compliance
time for the initial inspection of AWL 57–21–
161 is as specified in table 1 to paragraphs
(g) and (j) of this AD or table 2 to paragraphs
(g) and (j) of this AD, as applicable, or within
60 days after the effective date of this AD,
whichever occurs later.
(2) For AWL 57–21–161, the compliance
time for the limitation section is at the
applicable time specified in AWL 57–21–161
or within 2,000 flight cycles after the
effective date of this AD, whichever occurs
later.
(3) For AWL 57–21–145 and AWL 57–21–
155, the compliance times for the initial
inspections are at the applicable times
specified in AWL 57–21–145 and AWL 57–
21–155 or within 2,000 flight cycles after the
effective date of this AD, whichever occurs
later. Where the compliance times for the
initial inspections in the AWLs specify
‘‘landings,’’ those compliance times are based
on the landings of the airplane.
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15:44 Jun 05, 2019
Jkt 247001
(k) New Requirement of This AD: No
Alternative Actions or Intervals
After the maintenance or inspection
program has been revised as required by
paragraph (i) of this AD, no alternative
actions (e.g., inspections) or intervals may be
used unless the actions or intervals are
approved as an AMOC in accordance with
the procedures specified in paragraph (p)(1)
of this AD.
(l) New Requirement of This AD: Rework of
MLG Trunnion To Meet Structural Safe-Life
Limits
(1) Except as specified in paragraph (m)(1)
of this AD: At or before the accumulation of
34,900 total flight cycles, or within 2,000
flight cycles after the effective date of this
AD, whichever occurs later, rework the MLG
trunnion (cold working of fastener holes in
PO 00000
Frm 00009
Fmt 4700
Sfmt 4700
specified in the TRs identified in figure 1 to
paragraphs (i)(1) and (o) of this AD specify
‘‘landings,’’ those compliance times are based
on the landings of the affected part.
the MLG trunnion fitting, and all applicable
related investigative and corrective actions)
in accordance with the Accomplishment
Instructions of Bombardier Service Bulletin
601R–57–046, Revision C, dated December
20, 2012. Do all applicable related
investigative and corrective actions before
further flight.
(2) At or before the accumulation of 38,900
total flight cycles, or within 2,000 flight
cycles after the effective date of this AD,
whichever occurs later, rework the MLG
trunnion (installation of forcemate bushings
in the MLG trunnion, and all applicable
related investigative and corrective actions)
in accordance with the Accomplishment
Instructions of Bombardier Service Bulletin
601R–57–047, Revision B, dated October 2,
2012. Do all applicable related investigative
and corrective actions before further flight.
(3) Except as specified in paragraph (m)(2)
of this AD: At or before the accumulation of
34,900 total flight cycles, or within 2,000
flight cycles after the effective date of this
AD, whichever occurs later, rework the MLG
trunnion (cold work of holes on the web of
the MLG trunnion, and all applicable related
E:\FR\FM\06JNR1.SGM
06JNR1
ER06JN19.003</GPH>
required by this paragraph terminates the
actions required by paragraph (g) of this AD.
Where the compliance times for the
repetitive inspections and life limits
ER06JN19.002</GPH>
Requirements Manual (MRM), CSP A–053,
Part 2, Appendix B, the general revisions
may be inserted in the MRM, and the TRs
may be removed. Accomplishing the revision
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Federal Register / Vol. 84, No. 109 / Thursday, June 6, 2019 / Rules and Regulations
investigative and corrective actions) in
accordance with the Accomplishment
Instructions of Bombardier Service Bulletin
601R–57–048, Revision C, dated June 6,
2013. Do all applicable related investigative
and corrective actions before further flight.
(m) Exceptions To Rework Specified in
Paragraph (l) of This AD
(1) For airplanes on which Bombardier
Service Bulletin 601R–57–046, Revision A,
dated December 21, 2009; or Bombardier
Service Bulletin 601R–57–046, Initial Issue,
dated July 17, 2009; was accomplished prior
to the effective date of this AD: Within 6
months after the effective date of this AD, do
Part G of the Accomplishment Instructions of
Bombardier Service Bulletin 601R–57–046,
Revision C, dated December 20, 2012.
(2) For airplanes on which Bombardier
Service Bulletin 601R–57–048, Revision A,
dated November 24, 2009; or Bombardier
Service Bulletin 601R–57–048, Initial Issue,
dated July 17, 2009; was accomplished prior
to the effective date of this AD: Within 6
months after the effective date of this AD, do
Part C of the Accomplishment Instructions of
Bombardier Service Bulletin 601R–57–048,
Revision C, dated June 6, 2013.
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(n) Credit for Previous Actions
(1) This paragraph provides credit for
actions required by paragraph (l)(1) of this
AD, if those actions were performed before
the effective date of this AD, using
Bombardier Service Bulletin 601R–57–046,
Revision B, dated August 24, 2012.
(2) This paragraph provides credit for
actions required by paragraph (l)(2) of this
AD, if those actions were performed before
the effective date of this AD, using the
service information specified in paragraph
(n)(2)(i) or (n)(2)(ii) of this AD.
(i) Bombardier Service Bulletin 601R–57–
047, Revision A, dated February 1, 2012.
(ii) Bombardier Service Bulletin 601R–57–
047, Initial Issue, dated June 29, 2011.
(3) This paragraph provides credit for
actions required by paragraph (l)(3) of this
AD, if those actions were performed before
the effective date of this AD, using
Bombardier Service Bulletin 601R–57–048,
Revision B, dated August 24, 2012.
(4) This paragraph provides credit for
actions required by paragraph (m)(1) of this
AD, if those actions were performed before
the effective date of this AD, using Part G of
the Accomplishment Instructions of
Bombardier Service Bulletin 601R–57–046,
Revision B, dated August 24, 2012.
(5) This paragraph provides credit for
actions required by paragraph (m)(2) of this
AD, if those actions were performed before
the effective date of this AD, using Part C of
the Accomplishment Instructions of
Bombardier Service Bulletin 601R–57–048,
Revision B, dated August 24, 2012.
(o) Repairs and Alternative Actions or
Intervals
(1) If any damage is found during an
inspection required by the AWLs identified
in figure 1 to paragraphs (i)(1) and (o) of this
AD, repair before further flight using a
method approved by the Manager, New York
ACO Branch, FAA; or Transport Canada Civil
Aviation (TCCA); or Bombardier, Inc.’s TCCA
VerDate Sep<11>2014
15:44 Jun 05, 2019
Jkt 247001
Design Approval Organization (DAO). If
approved by the DAO, the approval must
include the DAO-authorized signature. The
approved repair instructions must
specifically refer to this AD or Canadian AD
CF–2017–27, dated August 2, 2017.
(2) Repairs approved by Bombardier, Inc.,
that deviate from the AWLs identified in
figure 1 to paragraphs (i)(1) and (o) of this AD
are acceptable methods of compliance if
approved by the Manager, New York ACO
Branch, FAA; or TCCA; or Bombardier, Inc.’s
TCCA DAO. If approved by the DAO, the
approval must include the DAO-authorized
signature. The approved repair instructions
must specifically refer to this AD or Canadian
AD CF–2017–27, dated August 2, 2017.
(3) For repairs approved before the
effective date of this AD that affect the AWLs
identified in figure 1 to paragraphs (i)(1) and
(o) of this AD and the approved repair
instructions do not specifically refer to
Canadian AD CF–2017–27, dated August 2,
2017: Within 6 months of the effective date
of this AD, contact the Manager, New York
ACO Branch, FAA; or TCCA; or Bombardier,
Inc.’s TCCA DAO Inc., for new or revised
limitations or inspection requirements on the
repair area and comply with the revised
limitations or inspection requirements. The
new or revised limitations or inspection
requirements must specifically refer to this
AD or Canadian AD CF–2017–27, dated
August 2, 2017.
(4) Canadian AMOC No. AARDG–2018/
A21, dated May 1, 2018, which was approved
before the effective date of this AD by TCCA,
is an acceptable method of compliance to the
corresponding requirements of this AD.
(p) Other FAA AD Provisions
(1) Alternative Methods of Compliance
(AMOCs): The Manager, New York ACO
Branch, FAA, has the authority to approve
AMOCs for this AD, if requested using the
procedures found in 14 CFR 39.19. In
accordance with 14 CFR 39.19, send your
request to your principal inspector or local
Flight Standards District Office, as
appropriate. If sending information directly
to the manager of the certification office,
send it to ATTN: Program Manager,
Continuing Operational Safety, FAA, New
York ACO Branch, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; telephone
516–228–7300; fax 516–794–5531. Before
using any approved AMOC, notify your
appropriate principal inspector, or lacking a
principal inspector, the manager of the local
flight standards district office/certificate
holding district office.
(2) Contacting the Manufacturer: For any
requirement in this AD to obtain corrective
actions from a manufacturer, the action must
be accomplished using a method approved
by the Manager, New York ACO Branch,
FAA; or TCCA; or Bombardier, Inc.’s TCCA
DAO. If approved by the DAO, the approval
must include the DAO-authorized signature.
The approved corrective action instructions
must specifically refer to this AD or Canadian
AD CF–2017–27, dated August 2, 2017.
(q) Related Information
(1) Refer to Mandatory Continuing
Airworthiness Information (MCAI) Canadian
PO 00000
Frm 00010
Fmt 4700
Sfmt 4700
AD CF–2017–27, dated August 2, 2017, for
related information. This MCAI may be
found in the AD docket on the internet at
https://www.regulations.gov by searching for
and locating Docket No. FAA–2018–0801.
(2) For more information about this AD,
contact Aziz Ahmed, Aerospace Engineer,
Airframe and Mechanical Systems Section,
FAA, New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY 11590;
telephone 516–228–7329; fax 516–794–5531.
(3) Service information identified in this
AD that is not incorporated by reference is
available at the addresses specified in
paragraphs (r)(5) and (r)(6) of this AD.
(r) Material Incorporated by Reference
(1) The Director of the Federal Register
approved the incorporation by reference
(IBR) of the service information listed in this
paragraph under 5 U.S.C. 552(a) and 1 CFR
part 51.
(2) You must use this service information
as applicable to do the actions required by
this AD, unless this AD specifies otherwise.
(3) The following service information was
approved for IBR on July 11, 2019.
(i) Bombardier Maintenance Requirements
Manual Temporary Revision 2B–2237, dated
June 19, 2014.
(ii) Bombardier Maintenance Requirements
Manual Temporary Revision 2B–2238, dated
June 19, 2014.
(iii) Bombardier Maintenance
Requirements Manual Temporary Revision
2B–2239, dated June 19, 2014.
(iv) Bombardier Maintenance
Requirements Manual Temporary Revision
2B–2241, dated June 19, 2014.
(v) Bombardier Maintenance Requirements
Manual Temporary Revision 2B–2242, dated
June 19, 2014.
(vi) Bombardier Maintenance
Requirements Manual Temporary Revision
2B–2246, dated November 7, 2014.
(vii) Bombardier Service Bulletin 601R–
57–046, Revision C, dated December 20,
2012.
(viii) Bombardier Service Bulletin 601R–
57–047, Revision B, dated October 2, 2012.
(ix) Bombardier Service Bulletin 601R–57–
048, Revision C, dated June 6, 2013.
(4) The following service information was
approved for IBR on December 19, 2008 (73
FR 73785, December 4, 2008).
(i) Bombardier Temporary Revision 2B–
2136, dated May 1, 2008, to the Bombardier
CL–600–2B19 Maintenance Requirements
Manual, Part 2, Appendix B—Airworthiness
Limitations.
(ii) [Reserved]
(5) For service information identified in
this AD, contact Bombardier, Inc., 400 CoˆteVertu Road West, Dorval, Que´bec H4S 1Y9,
Canada; Widebody Customer Response
Center North America toll-free telephone 1–
866–538–1247 or direct-dial telephone 1–
514–855–2999; fax 514–855–7401; email
ac.yul@aero.bombardier.com; internet https://
www.bombardier.com.
(6) You may view this service information
at the FAA, Transport Standards Branch,
2200 South 216th St., Des Moines, WA. For
information on the availability of this
material at the FAA, call 206–231–3195.
(7) You may view this service information
that is incorporated by reference at the
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Federal Register / Vol. 84, No. 109 / Thursday, June 6, 2019 / Rules and Regulations
National Archives and Records
Administration (NARA). For information on
the availability of this material at NARA, call
202–741–6030, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued in Des Moines, Washington, on May
15, 2019.
Michael Kaszycki,
Acting Director, System Oversight Division,
Aircraft Certification Service.
[FR Doc. 2019–11830 Filed 6–5–19; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 71
[Docket No. FAA–2019–0105; Airspace
Docket No. 19–AGL–9]
Authority for This Rulemaking
RIN 2120–AA66
Amendment of Class E Airspace;
Manistique, MI
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
This action modifies the Class
E airspace extending upward from 700
feet above the surface and the Class E
airspace extending upward from 1,200
feet above the surface at Schoolcraft
County Airport, Manistique, MI. This
action is due to an airspace review
caused by the decommissioning of the
Schoolcraft VHF omnidirectional range
(VOR), which provided navigation
information to the instrument
procedures at this airport, as part of the
VOR Minimum Operational Network
(MON) Program. The geographic
coordinates of Schoolcraft County
Airport are also being updated to
coincide with the FAA’s aeronautic
database. Airspace redesign is necessary
for the safety and management of
instrument flight rules (IFR) operations
at this airport.
DATES: Effective 0901 UTC, August 15,
2019. The Director of the Federal
Register approves this incorporation by
reference action under Title 1 Code of
Federal Regulations part 51, subject to
the annual revision of FAA Order
7400.11 and publication of conforming
amendments.
ADDRESSES: FAA Order 7400.11C,
Airspace Designations and Reporting
Points, and subsequent amendments can
be viewed online at https://www.faa.gov/
air_traffic/publications/. For further
information, you can contact the
Airspace Policy Group, Federal Aviation
Administration, 800 Independence
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SUMMARY:
VerDate Sep<11>2014
15:44 Jun 05, 2019
Avenue SW, Washington, DC 20591;
telephone: (202) 267–8783. The Order is
also available for inspection at the
National Archives and Records
Administration (NARA). For
information on the availability of FAA
Order 7400.11C at NARA, call (202)
741–6030, or go to https://
www.archives.gov/federal-register/cfr/
ibr-locations.html.
FAA Order 7400.11, Airspace
Designations and Reporting Points, is
published yearly and effective on
September 15.
FOR FURTHER INFORMATION CONTACT:
Jeffrey Claypool, Federal Aviation
Administration, Operations Support
Group, Central Service Center, 10101
Hillwood Parkway, Fort Worth, TX
76177; telephone (817) 222–5711.
SUPPLEMENTARY INFORMATION:
Jkt 247001
The FAA’s authority to issue rules
regarding aviation safety is found in
Title 49 of the United States Code.
Subtitle I, Section 106 describes the
authority of the FAA Administrator.
Subtitle VII, Aviation Programs,
describes in more detail the scope of the
agency’s authority. This rulemaking is
promulgated under the authority
described in Subtitle VII, Part A,
Subpart I, Section 40103. Under that
section, the FAA is charged with
prescribing regulations to assign the use
of airspace necessary to ensure the
safety of aircraft and the efficient use of
airspace. This regulation is within the
scope of that authority as it amends the
Class E airspace extending upward from
700 feet above the surface and the Class
E airspace extending upward from 1,200
feet above the surface at Schoolcraft
County Airport, Manistique, MI, to
support IFR operations at this airport.
History
The FAA published a notice of
proposed rulemaking in the Federal
Register (84 FR 8834; March 12, 2019)
for Docket No. FAA–2019–0105 to
amend the Class E airspace extending
upward from 700 feet above the surface
and the Class E airspace extending
upward from 1,200 feet above the
surface at Schoolcraft County Airport,
Manistique, MI. Interested parties were
invited to participate in this rulemaking
effort by submitting written comments
on the proposal to the FAA. Two
comments were received supporting the
proposed action. The FAA provides the
following response.
Class E airspace extending from 700
feet and 1,200 feet above the surface of
an airport is provided for transition to
and from the terminal or en route
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Fmt 4700
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26341
environment within the National
Airspace System. The size and design of
this airspace is determined by FAA
Order 7400.2M, Procedures for
Handling Airspace Matters, and is
designed to enhance safety and support
IFR operations at the associated airports.
Airspace design does not ‘‘cause’’ the
decommissioning of a navigational aid.
The decommissioning of the Schoolcraft
VOR was determined by the VOR MON
Program, a national program. Airspace
redesign is needed due to the
decommissioning of the Schoolcraft
VOR and the cancellation and revision
of instrument flight procedures at the
airport. Airspace design takes the
current airport requirements and current
instrument and visual departures and
arrival procedures into consideration to
insure the safety of operations at the
airport.
Class E airspace designations are
published in paragraph 6005 of FAA
Order 7400.11C, dated August 13, 2018,
and effective September 15, 2018, which
is incorporated by reference in 14 CFR
71.1. The Class E airspace designations
listed in this document will be
published subsequently in the Order.
Availability and Summary of
Documents for Incorporation by
Reference
This document amends FAA Order
7400.11C, Airspace Designations and
Reporting Points, dated August 13,
2018, and effective September 15, 2018.
FAA Order 7400.11C is publicly
available as listed in the ADDRESSES
section of this document. FAA Order
7400.11C lists Class A, B, C, D, and E
airspace areas, air traffic service routes,
and reporting points.
The Rule
This amendment to Title 14 Code of
Federal Regulations (14 CFR) part 71 by
amending the Class E airspace
extending upward from 700 feet above
the surface to within a 6.5-mile radius
(reduced from a 7-mile radius) of
Schoolcraft County Airport, Manistique,
MI; amending the Class E airspace
extending upward from 1,200 feet above
the surface to within a 9-mile radius of
Schoolcraft County Airport; removing
the extension to the east of the airport,
as it is no longer required; removing the
city associated with the airport from the
airspace legal description to comply
with FAA Order 7400.2M, Procedures
for Handling Airspace Matters; and
updating the geographic coordinates of
the airport to coincide with the FAA’s
aeronautical database.
This action is the result of an airspace
review caused by the decommissioning
of the Schoolcraft VOR, which provided
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]]>Agencies
[Federal Register Volume 84, Number 109 (Thursday, June 6, 2019)]
[Rules and Regulations]
[Pages 26334-26341]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-11830]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2018-0801; Product Identifier 2017-NM-147-AD; Amendment
39-19632; AD 2019-08-11]
RIN 2120-AA640
Airworthiness Directives; Bombardier, Inc., Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: We are superseding Airworthiness Directive (AD) 2008-24-14,
which applied to all Bombardier, Inc., Model CL-600-2B19 (Regional Jet
Series 100 & 440) airplanes. AD 2008-24-14 required revising the
instructions for continued airworthiness to incorporate certain
airworthiness limitations for the main landing gear (MLG) trunnion
fitting assembly. This AD requires revising the maintenance or
inspection program, as applicable, to incorporate certain airworthiness
limitations (AWLs). This AD also requires reworking the trunnion
fitting in order to meet new structural safe-life limits. This AD was
prompted by reports of cracks on the MLG trunnion fitting during
fatigue testing; the introduction of new AWL tasks with revised
inspection, modification, and safe-life requirements; and a
determination that the trunnion fitting lower flange and both forward
and aft bore holes are also subject to fatigue cracking. We are issuing
this AD to address the unsafe condition on these products.
DATES: This AD is effective July 11, 2019.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of July 11,
2019.
The Director of the Federal Register approved the incorporation by
reference of a certain other publication listed in this AD as of
December 19, 2008 (73 FR 73785, December 4, 2008).
ADDRESSES: For service information identified in this final rule,
contact Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval,
Qu[eacute]bec H4S 1Y9, Canada; Widebody Customer Response Center North
America toll-free telephone 1-866-538-1247 or direct-dial telephone 1-
514-855-2999; fax 514-855-7401; email [email protected];
internet https://www.bombardier.com. You may view this referenced
service information at the FAA, Transport Standards Branch, 2200 South
216th St., Des Moines, WA. For information on the availability of this
material at the FAA, call 206-231-3195. It is also available on the
internet at https://www.regulations.gov by searching for and locating
Docket No. FAA-2018-0801.
Examining the AD Docket
You may examine the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0801; or in person at Docket Operations between 9 a.m. and 5 p.m.,
Monday through Friday, except Federal holidays. The AD docket contains
this final rule, the regulatory evaluation, any comments received, and
other information. The address for Docket Operations (phone: 800-647-
5527) is U.S. Department of Transportation, Docket Operations, M-30,
West Building Ground Floor, Room W12-140, 1200 New Jersey Avenue SE,
Washington, DC 20590.
FOR FURTHER INFORMATION CONTACT: Aziz Ahmed, Aerospace Engineer,
Airframe and Mechanical Systems Section, FAA, New York ACO Branch, 1600
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7329;
fax 516-794-5531.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to supersede AD 2008-24-14, Amendment 39-15758 (73 FR 73785,
December 4, 2008) (``AD 2008-24-14''). AD 2008-24-14 applied to all
Bombardier, Inc., Model CL-600-2B19 (Regional Jet Series 100 & 440)
airplanes. The NPRM published in the Federal Register on October 1,
2018 (83 FR 49317). The NPRM was prompted by reports of cracks on the
MLG trunnion fitting during fatigue testing; the introduction of new
AWL tasks with revised inspection, modification, and safe-life
requirements; and a determination that the trunnion fitting lower
flange and both forward and aft bore holes are also subject to fatigue
cracking. The NPRM proposed to require revising the maintenance or
inspection program, as applicable, to incorporate certain AWLs. The
NPRM also proposed to require reworking the trunnion fitting in order
to meet new structural safe-life limits. We are issuing this AD to
address fatigue cracking of the MLG trunnion fitting. Failure of the
MLG trunnion fitting could result in MLG collapse.
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian AD CF-2017-27, dated August
2, 2017 (referred to after this as the Mandatory Continuing
Airworthiness Information, or ``the MCAI''), to correct an unsafe
condition for certain Bombardier, Inc., Model CL-600-2B19 (Regional Jet
Series 100 & 440) airplanes. The MCAI states:
Cracks on the main landing gear (MLG) trunnion fitting web
discovered during fatigue testing led to the issuance of [Canadian]
AD CF-2008-21 [which corresponds to FAA AD 2008-24-14], which
mandated new inspection requirements to ensure that fatigue cracking
of the trunnion web would be detected and corrected.
Additional fatigue test article findings and in-service findings
have shown that the trunnion fitting lower flange and both forward
and aft bore holes are also subject to fatigue cracking. Failure of
the main landing gear trunnion fitting could result in the collapse
of the main landing gear. Bombardier Inc. has decided to implement a
series of design changes to improve the fatigue life of the trunnion
fitting that is now a safe-life assembly.
New and revised Airworthiness Limitation (AWL) tasks for the MLG
trunnion fitting
[[Page 26335]]
assembly have been introduced in order to require new inspection,
modification, and safe-life requirements. This [Canadian] AD
mandates the incorporation of these new and revised AWL tasks, and
removal of the AWL tasks they replace, to ensure that fatigue
cracking of the MLG trunnion fitting is detected and corrected. This
[Canadian] AD also requires rework of the trunnion fitting in order
to meet new structural safe-life limits.
You may examine the MCAI in the AD docket on the internet at https://www.regulations.gov by searching for and locating Docket No. FAA-2018-
0801.
Comments
We gave the public the opportunity to participate in developing
this final rule. The following presents the comments received on the
NPRM and the FAA's response to each comment.
Support for the NPRM
Air Line Pilots Association, International stated its support for
the NPRM.
Request To Clarify Compliance Times in Paragraph (l) of the Proposed AD
Air Wisconsin Airlines requested that we clarify the compliance
times for the rework specified in paragraph (l) of the proposed AD. Air
Wisconsin Airlines stated that the AWLs do not include requirements to
incorporate the service information identified in paragraph (l)(1),
(l)(2), and (l)(3) of this AD. Air Wisconsin Airlines added that
Bombardier Service Bulletin 601R-57-046, Revision C, dated December 20,
2012, would be required only if Bombardier Service Bulletin 601R-57-
048, Revision C, dated June 6, 2013, is done and therefore there is no
requirement to do Bombardier Service Bulletin 601R-57-046, Revision C,
dated December 20, 2012.
We agree to clarify the compliance times for the rework required by
paragraph (l) of this AD. We acknowledge that the compliance times for
incorporating the rework are not clear. We note that Bombardier Service
Bulletin 601R-57-046, Revision C, dated December 20, 2012, is not
contingent on whether Bombardier Service Bulletin 601R-57-048, Revision
C, dated June 6, 2013, is done. As specified in certain AWLs, ``SB
601R-57-046 shall be incorporated at or before 34,900 flight cycles.''
However, we acknowledge that the AWLs do not specify requirements
to incorporate Bombardier Service Bulletin 601R-57-047, Revision B,
dated October 2, 2012; and Bombardier Service Bulletin 601R-57-048,
Revision C, dated June 6, 2013. Since the AWLs do not specify
compliance times for incorporating that service information, operators
would need to accomplish the actions specified in that service
information within 2,000 flight cycles after the effective date of this
AD.
However, we have determined that the actions specified in
Bombardier Service Bulletin 601R-57-046, Revision C, dated December 20,
2012; Bombardier Service Bulletin 601R-57-047, Revision B, dated
October 2, 2012; and Bombardier Service Bulletin 601R-57-048, Revision
C, dated June 6, 2013; must be done within the initial compliance times
specified in the service information, or within 2,000 flight cycles
after the effective date of this AD, whichever occurs later. We have
coordinated with TCCA to clarify the compliance times for incorporating
the service information. We have added compliance times to paragraphs
(l)(1) through (l)(3) of this AD accordingly.
Request To Reword Requirement Paragraph
Air Wisconsin Airlines requested that paragraph (g) of the proposed
AD be reworded to indicate that paragraph (f)(1) of AD 2008-24-14
required incorporation of Bombardier Maintenance Requirements Manual
(MRM), CSP A-253, Part 2, Appendix B task AWL 57-21-161, because
Temporary Revision (TR) 2B-2136 (Global alternative method of
compliance (AMOC) with log #14-83) was superseded by TR 2B-2153 and
later incorporated into a general revision of Bombardier Maintenance
Requirements Manual (MRM), CSP A-253, Part 2, Appendix B.
We disagree, because the requirements specified in paragraph (g) of
this AD are a restatement of the actions required by paragraph (f)(1)
of AD 2008-24-14 and are still applicable until the new actions
required by paragraph (i) of this AD are done. The FAA cannot impose
the latest requirements for a paragraph that has the initial compliance
date of AD 2008-24-14 since the latest documents were not available at
the time that AD 2008-24-14 became effective. Additionally, paragraph
(i) of this AD addresses the commenter's concerns regarding the latest
documents. For clarity, we have added a statement to paragraph (i) of
this AD to specify that accomplishing the revision required by
paragraph (i) of this AD terminates the revision required by paragraph
(g) of this AD.
Request To Clarify Compliance Table Reference
Air Wisconsin Airlines observed that the reference to ``table 1 or
table 2 to paragraphs (g) and (j) of this AD, as applicable'' in
paragraph (g) was not in AD 2008-24-14 and therefore is a change to
that paragraph, because paragraph (j) is a new requirement of the
proposed AD. We infer that the commenter would like us to clarify the
inclusion of a reference to ``paragraph (j)'' within paragraph (g) of
the proposed AD.
We agree to clarify the paragraph in question. The inclusion of
``paragraph (j)'' within paragraph (g) of this AD is merely as part of
the designation of one of the tables referenced and has no bearing upon
the requirements of paragraph (g) of this AD. 1 CFR parts 8 and 21
require orderly codification of regulations. This means that all
elements of an AD, including tables and figures, must be properly
designated. A table's designation includes the sequential number of the
table, the paragraphs to which it applies, and the location of the
table within the AD. The Office of the Federal Register (OFR) requires
a complete designation when a table is cross-referenced. Both of the
tables in question are referenced in paragraphs (g) and (j) of this AD,
therefore, the correct reference is to ``table 1 to paragraphs (g) and
(j)'' and ``table 2 to paragraphs (g) and (j),'' as stated in
paragraphs (g) and (j) of this AD. We have not changed this AD with
regard to table designations.
Request To Reword Compliance Time
Air Wisconsin Airlines requested that we reword the compliance time
statement in paragraph (j)(2) of the proposed AD to specify the
compliance time instead of referring to the AWL. The commenter stated
that rewording would simplify the paragraph.
We acknowledge the commenter's request. However, the information is
contained in the AWL and we matched the language in the MCAI by
referring to the AWL. Unless the language in the MCAI is not
enforceable, we generally do not deviate from the MCAI. We have not
changed this AD in this regard.
Request To Address Missing Compliance Time
Bombardier requested that we add paragraph (j)(4) to the proposed
AD in order to align with the instructions in paragraph B.3. of the
MCAI. Bombardier stated that paragraph (j)(3) of the proposed AD
mentions the compliance time for the initial inspection but not for the
limitation for AWL 57-21-145 and AWL 57-21-155. Additionally, Air
Wisconsin Airlines asked whether our intent in paragraph (j)(3) of the
proposed AD was to ``speak only to the initial inspections in AWL 57-
21-145 and AWL 57-21-155.'' We infer Air
[[Page 26336]]
Wisconsin Airlines is also requesting that we address the missing
compliance time statement for the limitation sections of AWL 57-21-145
and AWL 57-21-155.
We agree with the request to include the information in paragraph
B.3. of the MCAI in this AD. The compliance time in paragraph B.3. of
the MCAI includes the grace period for both the initial inspection and
the limitation sections of the AWLs. We have added paragraph (j)(4) of
this AD to address the compliance time for the limitation sections of
AWL 57-21-145 and AWL 57-21-155.
Request To Combine ``No Alternative Actions or Intervals'' Paragraphs
Air Wisconsin Airlines requested that we consider combining
paragraphs (h) and (k) of the proposed AD. The commenter asserted that
paragraph (h) of the proposed AD does not restate the requirement of
paragraph (f)(2) of AD 2008-24-14.
We do not agree to the request to combine paragraphs (h) and (k) of
this AD because the retained and new requirements are addressed
separately in this supersedure AD. Paragraph (h) of this AD restates
the requirements of paragraph (f)(2) of AD 2008-24-14, with a new
exception. Paragraph (h) of this AD applies to the retained action
required by paragraph (g) of this AD while paragraph (k) of this AD
applies to the new action required by paragraph (i) of this AD. We have
not changed this AD in this regard.
Request To Clarify Figure Reference
Air Wisconsin Airlines requested that we clarify the reference to
``the AWLs identified in figure 1 to paragraphs (i) and (o)'' in
paragraph (o) of the proposed AD. The commenter remarked that no AWLs
are specifically listed in paragraph (o) of the proposed AD.
We agree to clarify the figure reference in paragraph (o) of this
AD. The AWLs are specifically listed in figure 1, which is designated
``figure 1 to paragraphs (i)(1) and (o).'' Paragraphs (i)(1) and (o)
both reference that figure. As previously mentioned, OFR requires that
the designation of any figure in an AD must include all paragraphs in
which it is referenced, and the full designation is required in each
reference. The correct designation of the figure in question is
``figure 1 to paragraphs (i)(1) and (o),'' as referenced in paragraphs
(i)(1) and (o) of this AD. We have not changed this AD with regard to
figure designations.
Request To Revise Paragraph (l) of the Proposed AD
Air Wisconsin Airlines requested that we revise paragraph (l) of
the proposed AD to state that the compliance time for the limitation
section is at the applicable time specified in the applicable AWLs.
As stated previously, we have revised paragraph (l) of this AD to
specify the compliance times for the rework. We note that the
compliance times for the limitation sections are provided in paragraphs
(j)(2) and (j)(4) of this AD. If affected parts are removed and
replaced with MLG trunnion, part numbers 601R10068-5 and -6, the
inspection and limitation sections compliance times of the affected
AWLs start from the installation of the new part numbers 601R10068-5
and -6. After the part replacement, the inspections and limitation
sections of AWL 57-21-155 and AWL 57-21-161 still apply.
Clarification of Compliance Times
Where the compliance times for the repetitive inspections and life
limits specified in the TRs identified in figure 1 to paragraphs (i)(1)
and (o) of this AD specify ``landings,'' those compliance times are
based on the landings of the affected part. The compliance times for
the initial inspections are specified in paragraphs (j)(1) and (j)(3)
of this AD and those compliance times are based on flight cycles or
landings of the airplane. We have clarified the compliance times in
paragraphs (i) and (j)(3) of this AD.
Conclusion
We reviewed the relevant data, considered the comments received,
and determined that air safety and the public interest require adopting
this final rule with the changes described previously and minor
editorial changes. We have determined that these minor changes:
Are consistent with the intent that was proposed in the
NPRM for addressing the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM.
We also determined that these changes will not increase the
economic burden on any operator or increase the scope of this final
rule.
Related Service Information Under 1 CFR Part 51
Bombardier has issued the following service information.
Bombardier Service Bulletin 601R-57-046, Revision C, dated
December 20, 2012, describes the cold working of fastener holes in the
MLG trunnion fitting, and related investigative and corrective actions.
Bombardier Service Bulletin 601R-57-047, Revision B, dated
October 2, 2012, describes the installation of forcemate bushings in
the MLG trunnion, and related investigative and corrective actions.
Bombardier Service Bulletin 601R-57-048, Revision C, dated
June 6, 2013, describes the cold working of holes on the web of the MLG
trunnion, and related investigative and corrective actions.
Bombardier has also issued the following temporary revisions (TRs),
which are distinct because they describe different AWL tasks that apply
to different Canadair part numbers.
Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2237, dated June 19, 2014. This TR describes AWL task 57-
21-145, MLG Mounting Trunnion Fitting Assembly (Pre-SB 601R-57-047).
Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2238, dated June 19, 2014. This TR describes AWL task 57-
21-161, MLG Mounting Trunnion Web at WS66 (Pre-SB 601R-57-046 or Pre-SB
601R-57-048).
Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2239, dated June 19, 2014. This TR describes AWL task 57-
21-155, MLG Mounting Trunnion Fitting Assembly (Pre-SB 601R-57-046 or
Pre-SB 601R-57-048).
Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2241, dated June 19, 2014. This TR describe AWL tasks 57-
21-162, MLG Mounting Trunnion Assembly; and 57-21-163, MLG Mounting
Trunnion Assembly.
Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2242, dated June 19, 2014. This TR removes certain AWL
tasks.
Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2246, dated November 7, 2014. This TR describes AWL tasks
57-21-162, MLG Mounting Trunnion Assembly; and 57-21-163, MLG Mounting
Trunnion Assembly.
This AD also requires Bombardier Temporary Revision 2B-2136, dated
May 1, 2008, to the Bombardier CL-600-2B19 Maintenance Requirements
Manual, Part 2, Appendix B--Airworthiness Limitations, which the
Director of the Federal Register approved for incorporation by
reference as of December 19, 2008 (73 FR 73785, December 4, 2008).
This service information is reasonably available because the
interested parties
[[Page 26337]]
have access to it through their normal course of business or by the
means identified in the ADDRESSES section.
Costs of Compliance
We estimate that this AD affects 460 airplanes of U.S. registry. We
estimate the following costs to comply with this AD:
Estimated Costs for Required Actions
--------------------------------------------------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product Cost on U.S. operators
--------------------------------------------------------------------------------------------------------------------------------------------------------
Retained actions from AD 2008-24-14 1 work-hour x $85 per $0 $85.................................. $39,100.
hour = $85.
New actions........................ Up to 178 work-hours x 38,928 Up to $54,058........................ Up to $24,866,680.
$85 per hour = Up to
$15,130.
--------------------------------------------------------------------------------------------------------------------------------------------------------
We have determined that revising the maintenance or inspection
program takes an average of 90 work-hours per operator, although we
recognize that this number may vary from operator to operator. In the
past, we have estimated that this action takes 1 work-hour per
airplane. Since operators incorporate maintenance or inspection program
changes for their affected fleet(s), we have determined that a per-
operator estimate is more accurate than a per-airplane estimate.
Therefore, we estimate the total cost per operator to be $7,650 (90
work-hours x $85 per work-hour).
We have received no definitive data that would enable us to provide
cost estimates for the on-condition actions specified in this AD.
According to the manufacturer, some or all of the costs of this AD
may be covered under warranty, thereby reducing the cost impact on
affected individuals. We do not control warranty coverage for affected
individuals. As a result, we have included all costs in our cost
estimate.
Authority for This Rulemaking
Title 49 of the United States Code specifies the FAA's authority to
issue rules on aviation safety. Subtitle I, section 106, describes the
authority of the FAA Administrator. Subtitle VII: Aviation Programs,
describes in more detail the scope of the Agency's authority.
We are issuing this rulemaking under the authority described in
Subtitle VII, Part A, Subpart III, Section 44701: ``General
requirements.'' Under that section, Congress charges the FAA with
promoting safe flight of civil aircraft in air commerce by prescribing
regulations for practices, methods, and procedures the Administrator
finds necessary for safety in air commerce. This regulation is within
the scope of that authority because it addresses an unsafe condition
that is likely to exist or develop on products identified in this
rulemaking action.
This AD is issued in accordance with authority delegated by the
Executive Director, Aircraft Certification Service, as authorized by
FAA Order 8000.51C. In accordance with that order, issuance of ADs is
normally a function of the Compliance and Airworthiness Division, but
during this transition period, the Executive Director has delegated the
authority to issue ADs applicable to transport category airplanes and
associated appliances to the Director of the System Oversight Division.
Regulatory Findings
We determined that this AD will not have federalism implications
under Executive Order 13132. This AD will not have a substantial direct
effect on the States, on the relationship between the national
government and the States, or on the distribution of power and
responsibilities among the various levels of government.
For the reasons discussed above, I certify that this AD:
1. Is not a ``significant regulatory action'' under Executive Order
12866;
2. Is not a ``significant rule'' under the DOT Regulatory Policies
and Procedures (44 FR 11034, February 26, 1979);
3. Will not affect intrastate aviation in Alaska; and
4. Will not have a significant economic impact, positive or
negative, on a substantial number of small entities under the criteria
of the Regulatory Flexibility Act.
List of Subjects in 14 CFR Part 39
Air transportation, Aircraft, Aviation safety, Incorporation by
reference, Safety.
Adoption of the Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 14 CFR part 39 as follows:
PART 39--AIRWORTHINESS DIRECTIVES
0
1. The authority citation for part 39 continues to read as follows:
Authority: 49 U.S.C. 106(g), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by removing Airworthiness Directive (AD)
2008-24-14, Amendment 39-15758 (73 FR 73785, December 4, 2008), and
adding the following new AD:
2019-08-11 Bombardier, Inc.: Amendment 39-19632; Docket No. FAA-
2018-0801; Product Identifier 2017-NM-147-AD.
(a) Effective Date
This AD is effective July 11, 2019.
(b) Affected ADs
This AD replaces AD 2008-24-14, Amendment 39-15758 (73 FR 73785,
December 4, 2008) (``AD 2008-24-14'').
(c) Applicability
This AD applies to Bombardier, Inc., Model CL-600-2B19 (Regional
Jet Series 100 & 440) airplanes, certificated in any category,
serial numbers 7002 and subsequent.
(d) Subject
Air Transport Association (ATA) of America Code 57, Wings.
(e) Reason
This AD was prompted by reports of cracks on the main landing
gear (MLG) trunnion fitting during fatigue testing; the introduction
of new airworthiness limitation (AWL) tasks with revised inspection,
modification, and safe-life requirements; and a determination that
the trunnion fitting lower flange and both forward and aft bore
holes are also subject to fatigue cracking. We are issuing this AD
to address fatigue cracking of the MLG trunnion fitting. Failure of
the MLG trunnion fitting could result in MLG collapse.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Retained Revision of Airworthiness Limitation Section With No
Changes
This paragraph restates the requirements of paragraph (f)(1) of
AD 2008-24-14, with no changes. Within 30 days after December 19,
2008 (the effective date of AD 2008-24-14), revise the Airworthiness
Limitations Section (ALS) of the Instructions for Continued
Airworthiness to incorporate AWL 57-21-161, as identified in
Bombardier Temporary Revision 2B-2136, dated May 1, 2008, to the
Bombardier CL-600-2B19 Maintenance Requirements Manual, Part 2,
Appendix B--
[[Page 26338]]
Airworthiness Limitations. The initial compliance time for the task
starts from the applicable time specified in table 1 to paragraphs
(g) and (j) of this AD or table 2 to paragraphs (g) and (j) of this
AD, as applicable. Repeat the inspection thereafter at the
applicable interval specified in Bombardier Temporary Revision 2B-
2136, dated May 1, 2008.
BILLING CODE 4910-13-P
[GRAPHIC] [TIFF OMITTED] TR06JN19.000
[GRAPHIC] [TIFF OMITTED] TR06JN19.001
(h) Retained No Alternative Actions or Intervals With New Exception
This paragraph restates the requirements of paragraph (f)(2) of
AD 2008-24-14, with a new exception: Except as required by paragraph
(i) of this AD, after accomplishing the actions specified in
paragraph (g) of this AD, no alternative inspections or inspection
intervals may be used unless the inspection or inspection interval
is approved as an alternative method of compliance (AMOC) in
accordance with the procedures specified in paragraph (p)(1) of this
AD.
(i) New Requirement of This AD: Revision of Existing Maintenance or
Inspection Program
(1) Within 60 days after the effective date of this AD: Revise
the existing maintenance or inspection program, as applicable, by
incorporating the AWL tasks specified in figure 1 to paragraphs
(i)(1) and (o) of this AD. Except as specified in paragraph (j) of
this AD, the initial compliance times for the tasks are at the
applicable times specified in the temporary revisions (TRs)
identified in figure 1 to paragraphs (i)(1) and (o) of this AD, or
within 60 days after the effective date of this AD, whichever occurs
later. When the information in AWL tasks identified in the TRs
specified in figure 1 to paragraphs (i)(1) and (o) of this AD has
been included in the general revisions of Bombardier Maintenance
[[Page 26339]]
Requirements Manual (MRM), CSP A-053, Part 2, Appendix B, the
general revisions may be inserted in the MRM, and the TRs may be
removed. Accomplishing the revision required by this paragraph
terminates the actions required by paragraph (g) of this AD. Where
the compliance times for the repetitive inspections and life limits
specified in the TRs identified in figure 1 to paragraphs (i)(1) and
(o) of this AD specify ``landings,'' those compliance times are
based on the landings of the affected part.
[GRAPHIC] [TIFF OMITTED] TR06JN19.002
(2) Within 60 days after the effective date of this AD: Revise
the existing maintenance or inspection program, as applicable, by
removing the AWL tasks specified in figure 2 to paragraph (i)(2) of
this AD.
[GRAPHIC] [TIFF OMITTED] TR06JN19.003
BILLING CODE 4910-13-C
(j) New Requirement of This AD: Initial Compliance Times for AWL Tasks
(1) For AWL 57-21-161, the compliance time for the initial
inspection of AWL 57-21-161 is as specified in table 1 to paragraphs
(g) and (j) of this AD or table 2 to paragraphs (g) and (j) of this
AD, as applicable, or within 60 days after the effective date of
this AD, whichever occurs later.
(2) For AWL 57-21-161, the compliance time for the limitation
section is at the applicable time specified in AWL 57-21-161 or
within 2,000 flight cycles after the effective date of this AD,
whichever occurs later.
(3) For AWL 57-21-145 and AWL 57-21-155, the compliance times
for the initial inspections are at the applicable times specified in
AWL 57-21-145 and AWL 57-21-155 or within 2,000 flight cycles after
the effective date of this AD, whichever occurs later. Where the
compliance times for the initial inspections in the AWLs specify
``landings,'' those compliance times are based on the landings of
the airplane.
(4) For AWL 57-21-145 and AWL 57-21-155, the compliance times
for the limitation sections is at the applicable time specified in
AWL 57-21-145 and AWL 57-21-155 or within 2,000 flight cycles after
the effective date of this AD, whichever occurs later.
(k) New Requirement of This AD: No Alternative Actions or Intervals
After the maintenance or inspection program has been revised as
required by paragraph (i) of this AD, no alternative actions (e.g.,
inspections) or intervals may be used unless the actions or
intervals are approved as an AMOC in accordance with the procedures
specified in paragraph (p)(1) of this AD.
(l) New Requirement of This AD: Rework of MLG Trunnion To Meet
Structural Safe-Life Limits
(1) Except as specified in paragraph (m)(1) of this AD: At or
before the accumulation of 34,900 total flight cycles, or within
2,000 flight cycles after the effective date of this AD, whichever
occurs later, rework the MLG trunnion (cold working of fastener
holes in the MLG trunnion fitting, and all applicable related
investigative and corrective actions) in accordance with the
Accomplishment Instructions of Bombardier Service Bulletin 601R-57-
046, Revision C, dated December 20, 2012. Do all applicable related
investigative and corrective actions before further flight.
(2) At or before the accumulation of 38,900 total flight cycles,
or within 2,000 flight cycles after the effective date of this AD,
whichever occurs later, rework the MLG trunnion (installation of
forcemate bushings in the MLG trunnion, and all applicable related
investigative and corrective actions) in accordance with the
Accomplishment Instructions of Bombardier Service Bulletin 601R-57-
047, Revision B, dated October 2, 2012. Do all applicable related
investigative and corrective actions before further flight.
(3) Except as specified in paragraph (m)(2) of this AD: At or
before the accumulation of 34,900 total flight cycles, or within
2,000 flight cycles after the effective date of this AD, whichever
occurs later, rework the MLG trunnion (cold work of holes on the web
of the MLG trunnion, and all applicable related
[[Page 26340]]
investigative and corrective actions) in accordance with the
Accomplishment Instructions of Bombardier Service Bulletin 601R-57-
048, Revision C, dated June 6, 2013. Do all applicable related
investigative and corrective actions before further flight.
(m) Exceptions To Rework Specified in Paragraph (l) of This AD
(1) For airplanes on which Bombardier Service Bulletin 601R-57-
046, Revision A, dated December 21, 2009; or Bombardier Service
Bulletin 601R-57-046, Initial Issue, dated July 17, 2009; was
accomplished prior to the effective date of this AD: Within 6 months
after the effective date of this AD, do Part G of the Accomplishment
Instructions of Bombardier Service Bulletin 601R-57-046, Revision C,
dated December 20, 2012.
(2) For airplanes on which Bombardier Service Bulletin 601R-57-
048, Revision A, dated November 24, 2009; or Bombardier Service
Bulletin 601R-57-048, Initial Issue, dated July 17, 2009; was
accomplished prior to the effective date of this AD: Within 6 months
after the effective date of this AD, do Part C of the Accomplishment
Instructions of Bombardier Service Bulletin 601R-57-048, Revision C,
dated June 6, 2013.
(n) Credit for Previous Actions
(1) This paragraph provides credit for actions required by
paragraph (l)(1) of this AD, if those actions were performed before
the effective date of this AD, using Bombardier Service Bulletin
601R-57-046, Revision B, dated August 24, 2012.
(2) This paragraph provides credit for actions required by
paragraph (l)(2) of this AD, if those actions were performed before
the effective date of this AD, using the service information
specified in paragraph (n)(2)(i) or (n)(2)(ii) of this AD.
(i) Bombardier Service Bulletin 601R-57-047, Revision A, dated
February 1, 2012.
(ii) Bombardier Service Bulletin 601R-57-047, Initial Issue,
dated June 29, 2011.
(3) This paragraph provides credit for actions required by
paragraph (l)(3) of this AD, if those actions were performed before
the effective date of this AD, using Bombardier Service Bulletin
601R-57-048, Revision B, dated August 24, 2012.
(4) This paragraph provides credit for actions required by
paragraph (m)(1) of this AD, if those actions were performed before
the effective date of this AD, using Part G of the Accomplishment
Instructions of Bombardier Service Bulletin 601R-57-046, Revision B,
dated August 24, 2012.
(5) This paragraph provides credit for actions required by
paragraph (m)(2) of this AD, if those actions were performed before
the effective date of this AD, using Part C of the Accomplishment
Instructions of Bombardier Service Bulletin 601R-57-048, Revision B,
dated August 24, 2012.
(o) Repairs and Alternative Actions or Intervals
(1) If any damage is found during an inspection required by the
AWLs identified in figure 1 to paragraphs (i)(1) and (o) of this AD,
repair before further flight using a method approved by the Manager,
New York ACO Branch, FAA; or Transport Canada Civil Aviation (TCCA);
or Bombardier, Inc.'s TCCA Design Approval Organization (DAO). If
approved by the DAO, the approval must include the DAO-authorized
signature. The approved repair instructions must specifically refer
to this AD or Canadian AD CF-2017-27, dated August 2, 2017.
(2) Repairs approved by Bombardier, Inc., that deviate from the
AWLs identified in figure 1 to paragraphs (i)(1) and (o) of this AD
are acceptable methods of compliance if approved by the Manager, New
York ACO Branch, FAA; or TCCA; or Bombardier, Inc.'s TCCA DAO. If
approved by the DAO, the approval must include the DAO-authorized
signature. The approved repair instructions must specifically refer
to this AD or Canadian AD CF-2017-27, dated August 2, 2017.
(3) For repairs approved before the effective date of this AD
that affect the AWLs identified in figure 1 to paragraphs (i)(1) and
(o) of this AD and the approved repair instructions do not
specifically refer to Canadian AD CF-2017-27, dated August 2, 2017:
Within 6 months of the effective date of this AD, contact the
Manager, New York ACO Branch, FAA; or TCCA; or Bombardier, Inc.'s
TCCA DAO Inc., for new or revised limitations or inspection
requirements on the repair area and comply with the revised
limitations or inspection requirements. The new or revised
limitations or inspection requirements must specifically refer to
this AD or Canadian AD CF-2017-27, dated August 2, 2017.
(4) Canadian AMOC No. AARDG-2018/A21, dated May 1, 2018, which
was approved before the effective date of this AD by TCCA, is an
acceptable method of compliance to the corresponding requirements of
this AD.
(p) Other FAA AD Provisions
(1) Alternative Methods of Compliance (AMOCs): The Manager, New
York ACO Branch, FAA, has the authority to approve AMOCs for this
AD, if requested using the procedures found in 14 CFR 39.19. In
accordance with 14 CFR 39.19, send your request to your principal
inspector or local Flight Standards District Office, as appropriate.
If sending information directly to the manager of the certification
office, send it to ATTN: Program Manager, Continuing Operational
Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516-228-7300; fax 516-794-5531. Before
using any approved AMOC, notify your appropriate principal
inspector, or lacking a principal inspector, the manager of the
local flight standards district office/certificate holding district
office.
(2) Contacting the Manufacturer: For any requirement in this AD
to obtain corrective actions from a manufacturer, the action must be
accomplished using a method approved by the Manager, New York ACO
Branch, FAA; or TCCA; or Bombardier, Inc.'s TCCA DAO. If approved by
the DAO, the approval must include the DAO-authorized signature. The
approved corrective action instructions must specifically refer to
this AD or Canadian AD CF-2017-27, dated August 2, 2017.
(q) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) Canadian AD CF-2017-27, dated August 2, 2017, for related
information. This MCAI may be found in the AD docket on the internet
at https://www.regulations.gov by searching for and locating Docket
No. FAA-2018-0801.
(2) For more information about this AD, contact Aziz Ahmed,
Aerospace Engineer, Airframe and Mechanical Systems Section, FAA,
New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; telephone 516-228-7329; fax 516-794-5531.
(3) Service information identified in this AD that is not
incorporated by reference is available at the addresses specified in
paragraphs (r)(5) and (r)(6) of this AD.
(r) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless this AD specifies otherwise.
(3) The following service information was approved for IBR on
July 11, 2019.
(i) Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2237, dated June 19, 2014.
(ii) Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2238, dated June 19, 2014.
(iii) Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2239, dated June 19, 2014.
(iv) Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2241, dated June 19, 2014.
(v) Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2242, dated June 19, 2014.
(vi) Bombardier Maintenance Requirements Manual Temporary
Revision 2B-2246, dated November 7, 2014.
(vii) Bombardier Service Bulletin 601R-57-046, Revision C, dated
December 20, 2012.
(viii) Bombardier Service Bulletin 601R-57-047, Revision B,
dated October 2, 2012.
(ix) Bombardier Service Bulletin 601R-57-048, Revision C, dated
June 6, 2013.
(4) The following service information was approved for IBR on
December 19, 2008 (73 FR 73785, December 4, 2008).
(i) Bombardier Temporary Revision 2B-2136, dated May 1, 2008, to
the Bombardier CL-600-2B19 Maintenance Requirements Manual, Part 2,
Appendix B--Airworthiness Limitations.
(ii) [Reserved]
(5) For service information identified in this AD, contact
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval,
Qu[eacute]bec H4S 1Y9, Canada; Widebody Customer Response Center
North America toll-free telephone 1-866-538-1247 or direct-dial
telephone 1-514-855-2999; fax 514-855-7401; email
[email protected]; internet https://www.bombardier.com.
(6) You may view this service information at the FAA, Transport
Standards Branch, 2200 South 216th St., Des Moines, WA. For
information on the availability of this material at the FAA, call
206-231-3195.
(7) You may view this service information that is incorporated
by reference at the
[[Page 26341]]
National Archives and Records Administration (NARA). For information
on the availability of this material at NARA, call 202-741-6030, or
go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.
Issued in Des Moines, Washington, on May 15, 2019.
Michael Kaszycki,
Acting Director, System Oversight Division, Aircraft Certification
Service.
[FR Doc. 2019-11830 Filed 6-5-19; 8:45 am]
BILLING CODE 4910-13-P
