Airworthiness Directives; Learjet Inc., 24344-24347 [2012-9393]
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Federal Register / Vol. 77, No. 79 / Tuesday, April 24, 2012 / Rules and Regulations
(h) No Alternative Inspections for Paragraph
(g) of This AD
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 by the Manager,
International Branch, ANM–116, Transport
ˆ
Airplane Directorate, FAA, or the Agencia
Nacional de Aviacao Civil (ANAC) (or its
¸˜
delegated agent); or unless the inspection or
interval is approved as an alternative method
of compliance (AMOC) in accordance with
the procedures specified in paragraph (k)(1)
of this AD.
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(i) New Requirements of This AD: Revising
the Maintenance Program
(1) Within 60 days after the effective date
of this AD: Revise the maintenance program
to incorporate the new or revised tasks
specified in Part 2—Airworthiness Limitation
Inspection (ALI)—Structures, of Appendix A,
Airworthiness Limitations, of the EMBRAER
170 MRBR MRB–1621, Revision 7, dated
November 11, 2010; and EMBRAER
Temporary Revision (TR) 7–1, dated
February 11, 2011, to Part 2—Airworthiness
Limitation Inspection (ALI)—Structures, of
Appendix A, Airworthiness Limitations, of
the EMBRAER 170 MRBR MRB–1621,
Revision 7; with the initial compliance times
and intervals specified in these documents.
(2) The initial compliance times for the
tasks start from the date of issuance of the
original Brazilian airworthiness certificate or
the date of issuance of the original Brazilian
export certificate of airworthiness of the
applicable airplane at the applicable time
specified in the tasks, or within 600 flight
cycles after revising the maintenance
program, whichever occurs later. For certain
tasks, the compliance times depend on the
pre-modification and post-modification
status of the actions specified in the
associated service bulletin, as specified in the
‘‘Applicability’’ column of Part 2—
Airworthiness Limitation Inspection (ALI)—
Structures, of Appendix A, Airworthiness
Limitations, of the EMBRAER 170 MRBR
MRB–1621, Revision 7, dated November 11,
2010; and EMBRAER Temporary Revision 7–
1, dated February 11, 2011, to Part 2—
Airworthiness Limitation Inspection (ALI)—
Structures, of Appendix A, Airworthiness
Limitations of the EMBRAER 170 MRBR
MRB–1621, Revision 7.
(3) For tasks identified in the documents
identified in paragraph (i)(1) of this AD,
doing the initial task required by this
paragraph terminates the requirements of
paragraph (g) of this AD for that task.
(j) No Alternative Actions Intervals, and/or
Critical Design Configuration Control
Limitations (CDCCLs)
After accomplishing the revisions required
by paragraph (i) of this AD, no alternative
actions (e.g., inspections), intervals, and/or
CDCCLs may be used other than those
specified in Part 2—Airworthiness Limitation
Inspection (ALI)—Structures, of Appendix A,
Airworthiness Limitations, of the EMBRAER
170 MRBR MRB–1621, Revision 7, dated
November 11, 2010; and EMBRAER
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Temporary Revision 7–1, dated February 11,
2011, to Part 2—Airworthiness Limitation
Inspection (ALI)—Structures, of Appendix A,
Airworthiness Limitations, of the EMBRAER
170 MRBR MRB–1621, Revision 7, unless the
actions, intervals, and/or CDCCLs are
approved as an AMOC in accordance with
the procedures specified in paragraph (k)(1)
of this AD.
(k) Other FAA AD Provisions
The following provisions also apply to this
AD:
(1) Alternative Methods of Compliance
(AMOCs): The Manager, International
Branch, ANM–116, 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 International Branch, send it to ATTN:
Cindy Ashforth, Aerospace Engineer,
International Branch, ANM–116, Transport
Airplane Directorate, FAA, 1601 Lind
Avenue SW., Renton, Washington 98057–
3356; telephone 425–227–2768; fax 425–227–
1320. Information may be emailed to:
9-ANM-116-AMOC-REQUESTS@faa.gov.
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. The AMOC
approval letter must specifically reference
this AD.
(2) Airworthy Product: For any requirement
in this AD to obtain corrective actions from
a manufacturer or other source, use these
actions if they are FAA-approved. Corrective
actions are considered FAA-approved if they
are approved by the State of Design Authority
(or their delegated agent). You are required
to assure the product is airworthy before it
is returned to service.
(l) Related Information
Refer to MCAI Brazilian Airworthiness
Directive 2011–04–01, dated May 5, 2011;
and Part 2—Airworthiness Limitation
Inspection (ALI)—Structures, of Appendix A,
Airworthiness Limitations, of the EMBRAER
170 MRBR MRB–1621, Revision 7, dated
November 11, 2010; and EMBRAER
Temporary Revision 7–1, dated February 11,
2011, to Part 2—Airworthiness Limitation
Inspection (ALI)—Structures, of Appendix A,
Airworthiness Limitations, of the EMBRAER
170 MRBR MRB–1621, Revision 7; for related
information.
(m) Material Incorporated by Reference
(1) You must use the following service
information to do the actions required by this
AD, unless the AD specifies otherwise. The
Director of the Federal Register approved the
incorporation by reference (IBR) of the
following service information under 5 U.S.C.
552(a) and 1 CFR part 51 on the date
specified.
(2) The following service information was
approved for IBR on May 29, 2012.
(i) Part 2—Airworthiness Limitation
Inspection (ALI)—Structures, of Appendix A,
Airworthiness Limitations, of the EMBRAER
170 MRBR MRB–1621, Revision 7, dated
PO 00000
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November 11, 2010. *Only the title page of
this document specifies the revision level of
the document.
(ii) EMBRAER Temporary Revision 7–1,
dated February 11, 2011, to Part 2—
Airworthiness Limitation Inspection (ALI)—
Structures, of Appendix A, Airworthiness
Limitations of the EMBRAER 170 MRBR
MRB–1621, Revision 7.
(3) The following service information was
approved for IBR on July 6, 2010 (75 FR
30284, June 1, 2010):
(i) EMBRAER Temporary Revision 4–1,
dated October 15, 2007, to Appendix A–Part
2 of the EMBRAER 170 Maintenance Review
Board Report MRB–1621.
(ii) EMBRAER Temporary Revision 4–3,
dated December 6, 2007, to Appendix A—
Part 2 of the EMBRAER 170 Maintenance
Review Board Report MRB–1621.
(iii) EMBRAER Temporary Revision 4–4,
dated January 18, 2008, to Appendix A– Part
2 of the EMBRAER 170 Maintenance Review
Board Report MRB–1621.
(4) For service information identified in
this AD, contact Empresa Brasileira de
Aeronautica S.A. (EMBRAER), Technical
Publications Section (PC 060), Av. Brigadeiro
˜
Faria Lima, 2170–Putim–12227–901 Sao Jose
dos Campos—SP—BRASIL; telephone +55 12
3927–5852 or +55 12 3309–0732; fax +55 12
3927–7546; email: distrib@embraer.com.br;
Internet: https://www.flyembraer.com.
(5) You may review copies of the service
information at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue SW., Renton,
Washington. For information on the
availability of this material at the FAA, call
425–227–1221.
(6) You may also review copies of the
service information that is incorporated by
reference at the National Archives and
Records Administration (NARA). For
information on the availability of this
material at an NARA facility, call 202–741–
6030, or go to https://www.archives.gov/
federal_register/code_of_federal_regulations/
ibr_locations.html.
Issued in Renton, Washington, on March
29, 2012.
Kalene C. Yanamura,
Acting Manager, Transport Airplane
Directorate, Aircraft Certification Service.
[FR Doc. 2012–9500 Filed 4–23–12; 8:45 am]
BILLING CODE 4910–13–P
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2011–1069; Directorate
Identifier 2011–NM–025–AD; Amendment
39–17025; AD 2012–08–08]
RIN 2120–AA64
Airworthiness Directives; Learjet Inc.
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule.
AGENCY:
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Federal Register / Vol. 77, No. 79 / Tuesday, April 24, 2012 / Rules and Regulations
We are adopting a new
airworthiness directive (AD) for all
Learjet Inc., Model 45 airplanes. This
AD was prompted by changes to the
Airworthiness Limitations Section
(ALS) of the maintenance manual,
which adds life-limits, revises lifelimits, or adds inspections not
previously identified. This AD requires
revising the maintenance program to
include new or more restrictive lifelimits and inspections. We are issuing
this AD to limit exposure of flight
critical components to corrosion,
cracking, or failure due to life-limits,
which if not corrected, could result in
loss of roll control, fatigue cracking, or
loss of structural components.
DATES: This AD is effective May 29,
2012.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in the AD
as of May 29, 2012.
ADDRESSES: For service information
identified in this AD, contact Learjet,
Inc., One Learjet Way, Wichita, Kansas
67209–2942; telephone 316–946–2000;
fax 316–946–2220; email ac.ict@aero.
bombardier.com; Internet https://www.
bombardier.com.You may review copies
of the referenced service information at
the FAA, Transport Airplane
Directorate, 1601 Lind Avenue SW.,
Renton, Washington. For information on
the availability of this material at the
FAA, call 425–227–1221.
SUMMARY:
Examining the AD Docket
You may examine the AD docket on
the Internet at https://www.regulations.
gov; or in person at the Docket
Management Facility between 9 a.m.
and 5 p.m., Monday through Friday,
except Federal holidays. The AD docket
contains this AD, the regulatory
evaluation, any comments received, and
other information. The address for the
Docket Office (phone: 800–647–5527) is
Document Management Facility, 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:
William Griffith, Aerospace Engineer,
Airframe Branch, ACE–118W, FAA,
Wichita Aircraft Certification Office,
1801 Airport Road, Room 100, MidContinent Airport, Wichita, Kansas
67209; phone: 316–946–4116; fax: 316–
946–4107; email: William.E.Griffith@
faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would
apply to the specified products. That
NPRM was published in the Federal
Register on October 19, 2011 (76 FR
64851). That NPRM proposed to require
revising the maintenance program to
include new or more restrictive lifelimits and inspections.
Comments
We gave the public the opportunity to
participate in developing this AD. The
following presents the comment
received on the proposal and the FAA’s
response to the comment.
Request To Revisit Interpretation of the
Meaning of the Word ‘‘Current’’
Flight Concepts requested we revisit
our interpretation of the word ‘‘current’’
so that the improper use of the
airworthiness directive system would
not be needed. This commenter justified
its request by providing Webster’s
definition of the word ‘‘current.’’
We infer that the requested change is
in reference to an FAA memorandum
regarding the legal interpretation of
section 91.409(f)(3) of the Federal
Aviation Regulations (14 CFR 91.409)
and is not specifically applicable to this
AD.
We do not agree that the word
‘‘current’’ needs to be defined for this
AD. The utilization of the word
‘‘current’’ is not within the textual body
of this AD. This AD requires revising
the maintenance program by
24345
incorporating certain tasks, which when
performed, address unsafe conditions.
Operators utilizing earlier versions of
manual-specific maintenance programs
may not be bound or obligated to follow
newer releases or updates to these
maintenance programs. The issue of the
terminology of the word ‘‘current’’ and
explanation of the requirement for FAA
mandates to newer maintenance actions
via the AD process is addressed in an
FAA memorandum dated August 13,
2010, from the Office of the Chief
Counsel. This AD ensures that those
specific tasks covering the unsafe
conditions are followed by all operators
of this airplane model. We have not
changed the AD in this regard.
Explanation of Additional Changes
Made to This AD
We have redesignated Note 1 of the
NPRM (76 FR 64851, October 19, 2011)
as paragraph (c)(2) of this AD, paragraph
(c) as paragraph (c)(1) of this AD, and
Note 2 of the NPRM as Note 1 to
paragraph (g) of this AD.
IRN # N3220105 was incorrectly
included in table 1 of the NPRM (76 FR
64851, October 19, 2011). We have
removed it from the final rule.
Conclusion
We reviewed the relevant data,
considered the comment received, and
determined that air safety and the
public interest require adopting the AD
as proposed, except for minor editorial
changes. We have determined that these
minor changes:
• Are consistent with the intent that
was proposed in the NPRM (76 FR
64851, October 19, 2011) for correcting
the unsafe condition; and
• Do not add any additional burden
upon the public than was already
proposed in the NPRM (76 FR 64851,
October 19, 2011).
Costs of Compliance
We estimate that this AD affects 336
airplanes of U.S. registry.
We estimate the following costs to
comply with this AD:
ESTIMATED COSTS
Labor cost
Parts cost
Cost per
product
Cost on
U.S. operators
Change ALS in maintenance manual .............
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Action
1 work-hour × $85 per hour = $85 .................
$0
$85
$28,560
Authority for This Rulemaking
Title 49 of the United States Code
specifies the FAA’s authority to issue
rules on aviation safety. Subtitle I,
section 106, describes the authority of
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the FAA Administrator. Subtitle VII:
Aviation Programs, describes in more
detail the scope of the Agency’s
authority.
We are issuing this rulemaking under
the authority described in Subtitle VII,
PO 00000
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Part A, Subpart III, Section 44701:
‘‘General requirements.’’ Under that
section, Congress charges the FAA with
promoting safe flight of civil aircraft in
air commerce by prescribing regulations
for practices, methods, and procedures
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Federal Register / Vol. 77, No. 79 / Tuesday, April 24, 2012 / Rules and Regulations
PART 39—AIRWORTHINESS
DIRECTIVES
AC%2025.1529-1A/$FILE/AC%2025.15291A.pdf.
1. The authority citation for part 39
continues to read as follows:
(d) Subject
Joint Aircraft System Component (JASC)/
Air Transport Association (ATA) of America
Code 05, Periodic Inspections.
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.
■
Regulatory Findings
§ 39.13
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
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:
Authority: 49 U.S.C. 106(g), 40113, 44701.
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive (AD):
2012–08–08 Learjet Inc.: Amendment 39–
17025; Docket No. FAA–2011–1069;
Directorate Identifier 2011–NM–025–AD.
(a) Effective Date
This AD is effective May 29, 2012.
(b) Affected ADs
None
(c) Applicability
(1) This AD applies to all Learjet Inc.,
Model 45 airplanes, certificated in any
category.
(2) This AD requires revisions to certain
operator maintenance documents to include
new actions (e.g. inspections). Compliance
with these actions is required by 14 CFR
91.403(c). For airplanes that have been
previously modified, altered, or repaired in
the areas addressed by these actions, the
operator may not be able to accomplish the
inspections described in the revisions. In this
situation, to comply with 14 CFR 91.403(c),
the operator must request approval for an
alternative method of compliance according
to paragraph (i) of this AD. The request
should include a description of changes to
the required actions that will ensure the
continued operational safety of the airplane.
The FAA has provided guidance for this
determination in FAA Advisory Circular
(AC) 25.1529–1A, dated November 20, 2007.
https://rgl.faa.gov/Regulatory_and_Guidance_
Library/rgAdvisoryCircular.nsf/list/
(e) Unsafe Condition
This AD was prompted by changes to the
Airworthiness Limitations Section (ALS) of
the maintenance manual (MM), which adds
life-limits, revises life-limits, or adds
inspections not previously identified. We are
issuing this AD to limit exposure of flight
critical components to corrosion, cracking, or
failure due to life-limits, which if not
corrected, could result in loss of roll control,
fatigue cracking, or loss of structural
components.
(f) Compliance
Comply with this AD within the
compliance times specified, unless already
done.
(g) Maintenance Program Revision
Within 90 days after the effective date of
this AD, revise the maintenance program by
incorporating the applicable inspection
reference number (IRN) tasks identified in
table 1 of this AD, as specified in Chapter 04,
Airworthiness Limitations, of the Bombardier
Learjet 45 Maintenance Manual MM–104,
Revision 53, dated January 10, 2011; or
Bombardier Learjet 40 Maintenance Manual
MM–105, Revision 21, dated January 10,
2011; as applicable. The initial task
compliance time is within 90 days after the
effective date of this AD, or the applicable
initial compliance time specified in table 1
of this AD, whichever is later.
Note 1 to paragraph (g) of this AD:
IRN #R2710041 shown in table 1 of this AD
is identified as IRN # N2710041 in prior
revisions of Bombardier Learjet 45
Maintenance Manual MM–104, and
Bombardier Learjet 40 Maintenance Manual
MM–105.
TABLE 1—IRN TASK REVISION
IRN #—
Initial compliance time—
Chapter 04 of these documents—
Model 40, 45 ...............
R2710041 ...................
Q5510091 ...................
Within 10 years after the date of issuance of
the original standard airworthiness certificate or the date of issuance of the original
export certificate of airworthiness, or within
10 years after the most recent replacement, whichever occurs later.
Within 600 flight hours after the most recent
inspection done in accordance with IRN #
Q5510091.
Bombardier Learjet 45 Maintenance Manual
MM–104, Revision 53, dated January 10,
2011; or Bombardier Learjet 40 Maintenance Manual MM–105, Revision 21, dated
January 10, 2011; as applicable.
Model 40, 45 ...............
Model 40, 45 ...............
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Model—
Q5530011 ...................
Before the accumulation of 9,600 total flight
hours.
Model 40, 45 ...............
P3220007 ...................
Within 48 months after the most recent inspection done in accordance with IRN #
P3220007.
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Bombardier Learjet 45 Maintenance Manual
MM–104, Revision 53, dated January 10,
2011; or Bombardier Learjet 40 Maintenance Manual MM–105, Revision 21, dated
January 10, 2011; as applicable.
Bombardier Learjet 45 Maintenance Manual
MM–104, Revision 53, dated January 10,
2011; or Bombardier Learjet 40 Maintenance Manual MM–105, Revision 21, dated
January 10, 2011; as applicable.
Bombardier Learjet 45 Maintenance Manual
MM–104, Revision 53, dated January 10,
2011; or Bombardier Learjet 40 Maintenance Manual MM–105, Revision 21, dated
January 10, 2011; as applicable.
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Federal Register / Vol. 77, No. 79 / Tuesday, April 24, 2012 / Rules and Regulations
24347
TABLE 1—IRN TASK REVISION—Continued
Model—
IRN #—
Initial compliance time—
Chapter 04 of these documents—
Model 40, 45 ...............
P3220146 ...................
Before the accumulation of 4,800 total landings.
Model 40, 45 ...............
N3220012, N3220023,
N3220035,
N3220036, and
N3220037.
Before the accumulation of 10,000 total landings on the component.
Model 40, 45 ...............
N3220103, N3220104,
and N3220106.
Before the accumulation of 17,000 total landings on the component.
Model 45 ......................
N5710147, N5710171,
and N5710173.
Before the accumulation of 6,500 total flight
hours.
Model 45 ......................
N5710175 ...................
Before the accumulation of 6,900 total flight
hours.
Model 45 ......................
N5710177 ...................
Before the accumulation of 7,000 total flight
hours.
Bombardier Learjet 45 Maintenance Manual
MM–104, Revision 53, dated January 10,
2011; or Bombardier Learjet 40 Maintenance Manual MM–105, Revision 21, dated
January 10, 2011; as applicable.
Bombardier Learjet 45 Maintenance Manual
MM–104, Revision 53, dated January 10,
2011; or Bombardier Learjet 40 Maintenance Manual MM–105, Revision 21, dated
January 10, 2011; as applicable.
Bombardier Learjet 45 Maintenance Manual
MM–104, Revision 53, dated January 10,
2011; or Bombardier Learjet 40 Maintenance Manual MM–105, Revision 21, dated
January 10, 2011; as applicable.
Bombardier Learjet 45 Maintenance Manual
MM–104, Revision 53, dated January 10,
2011.
Bombardier Learjet 45 Maintenance Manual
MM–104, Revision 53, dated January 10,
2011.
Bombardier Learjet 45 Maintenance Manual
MM–104, Revision 53, dated January 10,
2011.
(h) No Alternative Intervals
After accomplishing the revisions required
by paragraph (g) of this AD, no alternative
IRN task or IRN task interval may be used
unless the IRN task or IRN task interval is
approved as an AMOC in accordance with
the procedures specified in paragraph (i)(1)
of this AD.
(i) Alternative Methods of Compliance
(AMOCs)
(1) The Manager, Wichita Aircraft
Certification Office (ACO), 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 ACO, send it to the
attention of the person identified in the
Related Information section of this AD.
(2) 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.
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(j) Related Information
For more information about this AD,
William Griffith, Aerospace Engineer,
Airframe Branch, ACE–118W, FAA, Wichita
Aircraft Certification Office, 1801 Airport
Road, Room 100, Mid-Continent Airport,
Wichita, Kansas 67209; phone: 316–946–
4116; fax: 316–946–4107; email: William.E.
Griffith@faa.gov.
(k) Material Incorporated by Reference
(1) You must use the following service
information to do the actions required by this
AD, unless the AD specifies otherwise. The
Director of the Federal Register approved the
incorporation by reference (IBR) of the
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16:38 Apr 23, 2012
Jkt 226001
following service information under 5 U.S.C.
552(a) and 1 CFR part 51:
(i) Chapter 04, Airworthiness Limitations,
of the Bombardier Learjet 45 Maintenance
Manual MM–104, Revision 53, dated January
10, 2011. Only the title page and record of
revisions pages of this document specify the
revision level of the document.
(ii) Chapter 04, Airworthiness Limitations,
of the Bombardier Learjet 40 Maintenance
Manual MM–105, Revision 21, dated January
10, 2011. Only the title page and record of
revisions pages of this document specify the
revision level of the document.
(2) For service information identified in
this AD, contact Learjet, Inc., One Learjet
Way, Wichita, Kansas 67209–2942; telephone
316–946–2000; fax 316–946–2220; email ac.
ict@aero.bombardier.com; Internet https://
www.bombardier.com.
(3) You may review copies of the
referenced service information at the FAA,
Transport Airplane Directorate, 1601 Lind
Avenue SW., Renton, Washington. For
information on the availability of this
material at the FAA, call 425–227–1221.
(4) You may also review copies of the
service information that is incorporated by
reference at the National Archives and
Records Administration (NARA). For
information on the availability of this
material at an NARA facility, call 202–741–
6030, or go to https://www.archives.gov/
federal_register/code_of_federal_regulations/
ibr_locations.html.
Issued in Renton, Washington, on April 9,
2012.
John Piccola,
Acting Manager, Transport Airplane
Directorate, Aircraft Certification Service.
[FR Doc. 2012–9393 Filed 4–23–12; 8:45 am]
BILLING CODE 4910–13–P
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2011–1223; Directorate
Identifier 2011–NM–173–AD; Amendment
39–17027; AD 2012–08–10]
RIN 2120–AA64
Airworthiness Directives; Bombardier,
Inc. Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
AGENCY:
We are adopting a new
airworthiness directive (AD) for certain
Bombardier, Inc. Model CL–600–2B16
(CL–604 Variant) airplanes. This AD
was prompted by reports of the air
driven generator (ADG) failing to power
essential buses during functional tests,
due to the low threshold setting of the
circuit protection on the ADG’s
generator control unit (GCU) preventing
the ADG from supplying power to the
essential buses. This AD requires
installing a new or serviceable ADG
GCU. We are issuing this AD to prevent
loss of power from the ADG to the
essential buses which, in the event of an
emergency, could prevent continued
safe flight.
DATES: This AD becomes effective May
29, 2012.
The Director of the Federal Register
approved the incorporation by reference
SUMMARY:
E:\FR\FM\24APR1.SGM
24APR1
]]>Agencies
[Federal Register Volume 77, Number 79 (Tuesday, April 24, 2012)]
[Rules and Regulations]
[Pages 24344-24347]
From the Federal Register Online via the Government Printing Office [www.gpo.gov]
[FR Doc No: 2012-9393]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2011-1069; Directorate Identifier 2011-NM-025-AD;
Amendment 39-17025; AD 2012-08-08]
RIN 2120-AA64
Airworthiness Directives; Learjet Inc.
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
[[Page 24345]]
SUMMARY: We are adopting a new airworthiness directive (AD) for all
Learjet Inc., Model 45 airplanes. This AD was prompted by changes to
the Airworthiness Limitations Section (ALS) of the maintenance manual,
which adds life-limits, revises life-limits, or adds inspections not
previously identified. This AD requires revising the maintenance
program to include new or more restrictive life-limits and inspections.
We are issuing this AD to limit exposure of flight critical components
to corrosion, cracking, or failure due to life-limits, which if not
corrected, could result in loss of roll control, fatigue cracking, or
loss of structural components.
DATES: This AD is effective May 29, 2012.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in the AD as of May 29, 2012.
ADDRESSES: For service information identified in this AD, contact
Learjet, Inc., One Learjet Way, Wichita, Kansas 67209-2942; telephone
316-946-2000; fax 316-946-2220; email ac.ict@aero.bombardier.com;
Internet https://www.bombardier.com.You may review copies of the
referenced service information at the FAA, Transport Airplane
Directorate, 1601 Lind Avenue SW., Renton, Washington. For information
on the availability of this material at the FAA, call 425-227-1221.
Examining the AD Docket
You may examine the AD docket on the Internet at https://www.regulations.gov; or in person at the Docket Management Facility
between 9 a.m. and 5 p.m., Monday through Friday, except Federal
holidays. The AD docket contains this AD, the regulatory evaluation,
any comments received, and other information. The address for the
Docket Office (phone: 800-647-5527) is Document Management Facility,
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: William Griffith, Aerospace Engineer,
Airframe Branch, ACE-118W, FAA, Wichita Aircraft Certification Office,
1801 Airport Road, Room 100, Mid-Continent Airport, Wichita, Kansas
67209; phone: 316-946-4116; fax: 316-946-4107; email:
William.E.Griffith@faa.gov.
SUPPLEMENTARY INFORMATION:
Discussion
We issued a notice of proposed rulemaking (NPRM) to amend 14 CFR
part 39 to include an AD that would apply to the specified products.
That NPRM was published in the Federal Register on October 19, 2011 (76
FR 64851). That NPRM proposed to require revising the maintenance
program to include new or more restrictive life-limits and inspections.
Comments
We gave the public the opportunity to participate in developing
this AD. The following presents the comment received on the proposal
and the FAA's response to the comment.
Request To Revisit Interpretation of the Meaning of the Word
``Current''
Flight Concepts requested we revisit our interpretation of the word
``current'' so that the improper use of the airworthiness directive
system would not be needed. This commenter justified its request by
providing Webster's definition of the word ``current.''
We infer that the requested change is in reference to an FAA
memorandum regarding the legal interpretation of section 91.409(f)(3)
of the Federal Aviation Regulations (14 CFR 91.409) and is not
specifically applicable to this AD.
We do not agree that the word ``current'' needs to be defined for
this AD. The utilization of the word ``current'' is not within the
textual body of this AD. This AD requires revising the maintenance
program by incorporating certain tasks, which when performed, address
unsafe conditions. Operators utilizing earlier versions of manual-
specific maintenance programs may not be bound or obligated to follow
newer releases or updates to these maintenance programs. The issue of
the terminology of the word ``current'' and explanation of the
requirement for FAA mandates to newer maintenance actions via the AD
process is addressed in an FAA memorandum dated August 13, 2010, from
the Office of the Chief Counsel. This AD ensures that those specific
tasks covering the unsafe conditions are followed by all operators of
this airplane model. We have not changed the AD in this regard.
Explanation of Additional Changes Made to This AD
We have redesignated Note 1 of the NPRM (76 FR 64851, October 19,
2011) as paragraph (c)(2) of this AD, paragraph (c) as paragraph (c)(1)
of this AD, and Note 2 of the NPRM as Note 1 to paragraph (g) of this
AD.
IRN N3220105 was incorrectly included in table 1 of the
NPRM (76 FR 64851, October 19, 2011). We have removed it from the final
rule.
Conclusion
We reviewed the relevant data, considered the comment received, and
determined that air safety and the public interest require adopting the
AD as proposed, except for minor editorial changes. We have determined
that these minor changes:
Are consistent with the intent that was proposed in the
NPRM (76 FR 64851, October 19, 2011) for correcting the unsafe
condition; and
Do not add any additional burden upon the public than was
already proposed in the NPRM (76 FR 64851, October 19, 2011).
Costs of Compliance
We estimate that this AD affects 336 airplanes of U.S. registry.
We estimate the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Change ALS in maintenance manual.... 1 work-hour x $85 per $0 $85 $28,560
hour = $85.
----------------------------------------------------------------------------------------------------------------
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
[[Page 24346]]
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.
Regulatory Findings
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 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 adding the following new airworthiness
directive (AD):
2012-08-08 Learjet Inc.: Amendment 39-17025; Docket No. FAA-2011-
1069; Directorate Identifier 2011-NM-025-AD.
(a) Effective Date
This AD is effective May 29, 2012.
(b) Affected ADs
None
(c) Applicability
(1) This AD applies to all Learjet Inc., Model 45 airplanes,
certificated in any category.
(2) This AD requires revisions to certain operator maintenance
documents to include new actions (e.g. inspections). Compliance with
these actions is required by 14 CFR 91.403(c). For airplanes that
have been previously modified, altered, or repaired in the areas
addressed by these actions, the operator may not be able to
accomplish the inspections described in the revisions. In this
situation, to comply with 14 CFR 91.403(c), the operator must
request approval for an alternative method of compliance according
to paragraph (i) of this AD. The request should include a
description of changes to the required actions that will ensure the
continued operational safety of the airplane. The FAA has provided
guidance for this determination in FAA Advisory Circular (AC)
25.1529-1A, dated November 20, 2007. https://rgl.faa.gov/Regulatory--
and--Guidance--Library/rgAdvisoryCircular.nsf/list/AC%2025.1529-1A/
$FILE/AC%2025.1529-1A.pdf.
(d) Subject
Joint Aircraft System Component (JASC)/Air Transport Association
(ATA) of America Code 05, Periodic Inspections.
(e) Unsafe Condition
This AD was prompted by changes to the Airworthiness Limitations
Section (ALS) of the maintenance manual (MM), which adds life-
limits, revises life-limits, or adds inspections not previously
identified. We are issuing this AD to limit exposure of flight
critical components to corrosion, cracking, or failure due to life-
limits, which if not corrected, could result in loss of roll
control, fatigue cracking, or loss of structural components.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Maintenance Program Revision
Within 90 days after the effective date of this AD, revise the
maintenance program by incorporating the applicable inspection
reference number (IRN) tasks identified in table 1 of this AD, as
specified in Chapter 04, Airworthiness Limitations, of the
Bombardier Learjet 45 Maintenance Manual MM-104, Revision 53, dated
January 10, 2011; or Bombardier Learjet 40 Maintenance Manual MM-
105, Revision 21, dated January 10, 2011; as applicable. The initial
task compliance time is within 90 days after the effective date of
this AD, or the applicable initial compliance time specified in
table 1 of this AD, whichever is later.
Note 1 to paragraph (g) of this AD: IRN R2710041 shown
in table 1 of this AD is identified as IRN N2710041 in
prior revisions of Bombardier Learjet 45 Maintenance Manual MM-104,
and Bombardier Learjet 40 Maintenance Manual MM-105.
Table 1--IRN Task Revision
----------------------------------------------------------------------------------------------------------------
Chapter 04 of these
Model-- IRN -- Initial compliance time-- documents--
----------------------------------------------------------------------------------------------------------------
Model 40, 45...................... R2710041............. Within 10 years after the Bombardier Learjet 45
date of issuance of the Maintenance Manual MM-
original standard 104, Revision 53, dated
airworthiness certificate January 10, 2011; or
or the date of issuance Bombardier Learjet 40
of the original export Maintenance Manual MM-
certificate of 105, Revision 21, dated
airworthiness, or within January 10, 2011; as
10 years after the most applicable.
recent replacement,
whichever occurs later.
Model 40, 45...................... Q5510091............. Within 600 flight hours Bombardier Learjet 45
after the most recent Maintenance Manual MM-
inspection done in 104, Revision 53, dated
accordance with IRN January 10, 2011; or
Q5510091. Bombardier Learjet 40
Maintenance Manual MM-
105, Revision 21, dated
January 10, 2011; as
applicable.
Model 40, 45...................... Q5530011............. Before the accumulation of Bombardier Learjet 45
9,600 total flight hours. Maintenance Manual MM-
104, Revision 53, dated
January 10, 2011; or
Bombardier Learjet 40
Maintenance Manual MM-
105, Revision 21, dated
January 10, 2011; as
applicable.
Model 40, 45...................... P3220007............. Within 48 months after the Bombardier Learjet 45
most recent inspection Maintenance Manual MM-
done in accordance with 104, Revision 53, dated
IRN P3220007. January 10, 2011; or
Bombardier Learjet 40
Maintenance Manual MM-
105, Revision 21, dated
January 10, 2011; as
applicable.
[[Page 24347]]
Model 40, 45...................... P3220146............. Before the accumulation of Bombardier Learjet 45
4,800 total landings. Maintenance Manual MM-
104, Revision 53, dated
January 10, 2011; or
Bombardier Learjet 40
Maintenance Manual MM-
105, Revision 21, dated
January 10, 2011; as
applicable.
Model 40, 45...................... N3220012, N3220023, Before the accumulation of Bombardier Learjet 45
N3220035, N3220036, 10,000 total landings on Maintenance Manual MM-
and N3220037. the component. 104, Revision 53, dated
January 10, 2011; or
Bombardier Learjet 40
Maintenance Manual MM-
105, Revision 21, dated
January 10, 2011; as
applicable.
Model 40, 45...................... N3220103, N3220104, Before the accumulation of Bombardier Learjet 45
and N3220106. 17,000 total landings on Maintenance Manual MM-
the component. 104, Revision 53, dated
January 10, 2011; or
Bombardier Learjet 40
Maintenance Manual MM-
105, Revision 21, dated
January 10, 2011; as
applicable.
Model 45.......................... N5710147, N5710171, Before the accumulation of Bombardier Learjet 45
and N5710173. 6,500 total flight hours. Maintenance Manual MM-
104, Revision 53, dated
January 10, 2011.
Model 45.......................... N5710175............. Before the accumulation of Bombardier Learjet 45
6,900 total flight hours. Maintenance Manual MM-
104, Revision 53, dated
January 10, 2011.
Model 45.......................... N5710177............. Before the accumulation of Bombardier Learjet 45
7,000 total flight hours. Maintenance Manual MM-
104, Revision 53, dated
January 10, 2011.
----------------------------------------------------------------------------------------------------------------
(h) No Alternative Intervals
After accomplishing the revisions required by paragraph (g) of
this AD, no alternative IRN task or IRN task interval may be used
unless the IRN task or IRN task interval is approved as an AMOC in
accordance with the procedures specified in paragraph (i)(1) of this
AD.
(i) Alternative Methods of Compliance (AMOCs)
(1) The Manager, Wichita Aircraft Certification Office (ACO),
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 ACO, send it to the
attention of the person identified in the Related Information
section of this AD.
(2) 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.
(j) Related Information
For more information about this AD, William Griffith, Aerospace
Engineer, Airframe Branch, ACE-118W, FAA, Wichita Aircraft
Certification Office, 1801 Airport Road, Room 100, Mid-Continent
Airport, Wichita, Kansas 67209; phone: 316-946-4116; fax: 316-946-
4107; email: William.E.Griffith@faa.gov.
(k) Material Incorporated by Reference
(1) You must use the following service information to do the
actions required by this AD, unless the AD specifies otherwise. The
Director of the Federal Register approved the incorporation by
reference (IBR) of the following service information under 5 U.S.C.
552(a) and 1 CFR part 51:
(i) Chapter 04, Airworthiness Limitations, of the Bombardier
Learjet 45 Maintenance Manual MM-104, Revision 53, dated January 10,
2011. Only the title page and record of revisions pages of this
document specify the revision level of the document.
(ii) Chapter 04, Airworthiness Limitations, of the Bombardier
Learjet 40 Maintenance Manual MM-105, Revision 21, dated January 10,
2011. Only the title page and record of revisions pages of this
document specify the revision level of the document.
(2) For service information identified in this AD, contact
Learjet, Inc., One Learjet Way, Wichita, Kansas 67209-2942;
telephone 316-946-2000; fax 316-946-2220; email
ac.ict@aero.bombardier.com; Internet https://www.bombardier.com.
(3) You may review copies of the referenced service information
at the FAA, Transport Airplane Directorate, 1601 Lind Avenue SW.,
Renton, Washington. For information on the availability of this
material at the FAA, call 425-227-1221.
(4) You may also review copies of the service information that
is incorporated by reference at the National Archives and Records
Administration (NARA). For information on the availability of this
material at an NARA facility, call 202-741-6030, or go to https://www.archives.gov/federal_register/code_of_federal_regulations/ibr_locations.html.
Issued in Renton, Washington, on April 9, 2012.
John Piccola,
Acting Manager, Transport Airplane Directorate, Aircraft Certification
Service.
[FR Doc. 2012-9393 Filed 4-23-12; 8:45 am]
BILLING CODE 4910-13-P
