Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes, 50727-50730 [2019-20897]
Download as PDF
Federal Register / Vol. 84, No. 187 / Thursday, September 26, 2019 / Rules and Regulations
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, International Section,
Transport Standards Branch, FAA; or the
European Union Aviation Safety Agency
(EASA); or Saab AB, Saab Aeronautics’s
EASA Design Organization Approval (DOA).
If approved by the DOA, the approval must
include the DOA-authorized signature.
(m) Related Information
(1) Refer to Mandatory Continuing
Airworthiness Information (MCAI) EASA AD
2019–0053, dated March 14, 2019, 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–2019–0521.
(2) For more information about this AD,
contact Shahram Daneshmandi, Aerospace
Engineer, International Section, Transport
Standards Branch, FAA, 2200 South 216th
St., Des Moines, WA 98198; telephone and
fax 206–231–3220.
(n) Material Incorporated by Reference
khammond on DSKJM1Z7X2PROD with RULES
(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.
(i) Saab Service Bulletin 2000–28–027,
dated January 15, 2019.
(ii) [Reserved]
(3) For service information identified in
this AD, contact Saab AB, Saab Aeronautics,
SE–581 88, Linko¨ping, Sweden; telephone
+46 13 18 5591; fax +46 13 18 4874; email
saab2000.techsupport@saabgroup.com;
internet https://www.saabgroup.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,
email fedreg.legal@nara.gov, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
Issued in Des Moines, Washington, on
September 16, 2019.
Michael Kaszycki,
Acting Director, System Oversight Division,
Aircraft Certification Service.
[FR Doc. 2019–20895 Filed 9–25–19; 8:45 am]
17:19 Sep 25, 2019
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2018–0453; Product
Identifier 2018–NM–028–AD; Amendment
39–19732; AD 2019–18–05]
RIN 2120–AA64
Airworthiness Directives; De Havilland
Aircraft of Canada Limited (Type
Certificate Previously Held by
Bombardier, Inc.) Airplanes
Federal Aviation
Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
AGENCY:
The FAA is adopting a new
airworthiness directive (AD) for certain
De Havilland Aircraft of Canada Limited
(Type Certificate Previously Held by
Bombardier, Inc.) Model DHC–8–400
series airplanes. This AD was prompted
by reports of the nose landing gear
(NLG) locking in a partially extended
position due to loose bushings on the
lock link of the NLG locking
mechanism. This AD requires repetitive
inspections of the bushings and the
lower lock link of the NLG for
discrepancies, and corrective actions if
necessary. This AD also requires
replacement of the lower lock link of the
NLG, which terminates the repetitive
inspections. The FAA is issuing this AD
to address the unsafe condition on these
products.
DATES: This AD is effective October 31,
2019.
The Director of the Federal Register
approved the incorporation by reference
of certain publications listed in this AD
as of October 31, 2019.
ADDRESSES: For service information
identified in this final rule, contact De
Havilland Aircraft of Canada Ltd., QSeries Technical Help Desk, 123 Garratt
Boulevard, Toronto, Ontario M3K 1Y5,
Canada; telephone: 416–375–4000; fax:
416–375–4539; email: thd@
dehavilland.com; internet: https://
dehavilland.com. 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.
It is also available on the internet at
https://www.regulations.gov by searching
for and locating Docket No. FAA–2018–
0453.
SUMMARY:
Examining the AD Docket
You may examine the AD docket on
the internet at https://
BILLING CODE 4910–13–P
VerDate Sep<11>2014
DEPARTMENT OF TRANSPORTATION
Jkt 247001
PO 00000
Frm 00017
Fmt 4700
Sfmt 4700
50727
www.regulations.gov by searching for
and locating Docket No. FAA–2018–
0453; 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 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:
Darren Gassetto, Aerospace Engineer,
Mechanical Systems and Administrative
Services Section, New York ACO
Branch, FAA, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590;
telephone 516–228–7323; fax 516–794–
5531.
SUPPLEMENTARY INFORMATION:
Discussion
The FAA issued a notice of proposed
rulemaking (NPRM) to amend 14 CFR
part 39 by adding an AD that would
apply to certain Bombardier, Inc., Model
DHC–8–400 series airplanes. The NPRM
published in the Federal Register on
May 30, 2018 (83 FR 24694). The NPRM
was prompted by reports of the NLG
locking in a partially extended position
due to loose bushings on the lock link
of the NLG locking mechanism. The
NPRM proposed to require inspecting
the bushings and the lower lock link of
the NLG for discrepancies, and
corrective actions if necessary.
The FAA issued a supplemental
notice of proposed rulemaking (SNPRM)
to amend 14 CFR part 39 by adding an
AD that would apply to certain
Bombardier, Inc., Model DHC–8–400
series airplanes. The SNPRM published
in the Federal Register on June 7, 2019
(84 FR 26601). The FAA issued the
SNPRM to add a requirement to replace
the lower lock link of the NLG, which
would terminate the repetitive
inspections proposed in the NPRM. The
SNPRM also proposed to reduce the
applicability in the NPRM.
The FAA is issuing this AD to address
excessive free play at the lock link of the
NLG locking mechanism, and
consequent inability to fully retract or
deploy the NLG, which could result in
collapse of the NLG and affect the safe
landing of the airplane.
Transport Canada Civil Aviation
(TCCA), which is the aviation authority
for Canada, has issued Canadian AD
CF–2018–01R1, dated January 21, 2019
(referred to after this as the Mandatory
Continuing Airworthiness Information,
or ‘‘the MCAI’’), to correct an unsafe
E:\FR\FM\26SER1.SGM
26SER1
50728
Federal Register / Vol. 84, No. 187 / Thursday, September 26, 2019 / Rules and Regulations
condition for certain De Havilland
Aircraft of Canada Limited (Type
Certificate Previously Held by
Bombardier, Inc.) Model DHC–8–400
series airplanes. The MCAI states:
A landing incident took place whereby the
aeroplane’s nose landing gear (NLG) was
locked in a partially-extended position,
leading to gear collapse upon NLG touch
down. The investigation revealed that the
NLG was locked in this position due to the
bushings on the lock link of the NLG locking
mechanism becoming loose. This condition
was present due to insufficient interference
fit which resulted in some bushing outer
diameter wear and fretting. A dislodged
bushing will also cause the bushing sealant
to break. Broken sealant allows moisture
ingress and corrosion that can accelerate free
play buildup. Excessive free play at the lock
link can result in the inability to fully retract
or deploy the NLG, resulting in a risk of NLG
collapse on landing.
Bombardier Inc. has developed an
inspection to identify and correct this
condition. The original version of this
[Canadian] AD required a repetitive
inspection [to detect discrepancies] and
corrective actions based on the inspection
findings.
Revision 1 of this [Canadian] AD is issued
to modify the NLG with a lower lock with
improved bushing retention and greasing
provisions. Implementing this modification
is a terminating action to this [Canadian] AD.
The modification has been introduced in
production, therefore the applicability of this
[Canadian] AD has been reduced.
Clarifications have also been made to the
retained text of the original version.
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–
0453.
Comments
The FAA gave the public the
opportunity to participate in developing
this final rule. The following presents
the comments received on the SNPRM
and the FAA’s response to each
comment.
khammond on DSKJM1Z7X2PROD with RULES
Request To Revise Certain
Requirements
Horizon Air asked that the
requirement to do the actions specified
in paragraph (k) of the proposed AD in
accordance with paragraph 3.A. of the
Accomplishment Instructions of
Bombardier Service Bulletin 84–32–154,
Revision A, dated November 21, 2018,
be removed. Horizon Air stated that the
job setup specified in paragraph 3.A. of
the referenced service information does
not directly correct the unsafe
condition. Horizon Air would like only
the actions specified in paragraph 3.B.
of the referenced service information
mandated.
The FAA does not agree with the
commenter’s request. For some ADs, the
job setup actions in the associated
service information do not affect the
actions to correct the unsafe condition.
However, for this AD, the FAA has
determined that to adequately perform
the corrective actions the job setup
actions specified in Bombardier Service
Bulletin 84–32–154, Revision A, dated
November 21, 2018, must be
accomplished. Paragraph 3.A., ‘‘Job SetUp,’’ of Bombardier Service Bulletin 84–
32–154, Revision A, dated November
21, 2018, includes specific procedures
for the NLG to be in the correct
configuration for the corrective actions
to be done and prevent damage to the
equipment. Therefore, the FAA has not
changed this AD in this regard.
Request To Install Post-UTC Aerospace
Systems Spare Parts
Horizon Air asked that installation of
NLG drag strut assemblies having part
number 47300–7A, 47300–9A, or
47300–11A, serviced in accordance with
UTC Aerospace Systems Vendor Service
Bulletin (VSB) 47300–32–138 R3, be
allowed as terminating action for the
repetitive inspections. Horizon Air
stated that UTC Aerospace Systems VSB
47300–32–138 R3 can be done on units
not installed on the airplane.
The FAA agrees to clarify. NLG drag
strut assemblies can be serviced (lower
lock links replaced and affected parts reidentified) by accomplishing UTC
Aerospace Systems VSB 47300–32–138
R3, as specified in Bombardier Service
Bulletin 84–32–154, Revision A, dated
November 21, 2018. However, operators
must still show compliance with
paragraph 3.A. and Steps 3.B.(1), 3.B.(4)
and 3.B.(5) of the Accomplishment
Instructions of Bombardier Service
Bulletin 84–32–154, Revision A, dated
November 21, 2018, for the removal of
a unit which has not been serviced, and
installation of a serviced spare unit, in
order to correct the unsafe condition. In
addition, paragraph (f) of this AD
specifies ‘‘Comply with this AD within
the compliance times specified, unless
already done.’’ Therefore, if some of the
corrective actions have been done, only
the remaining corrective actions must be
completed to comply with this AD. The
FAA has not changed this AD in this
regard.
Explanation of Change Made to This
Final Rule
The FAA has revised this final rule to
identify the legal name of the
manufacturer as published in the most
recent type certificate data sheet for the
affected airplane models.
Conclusion
The FAA reviewed the relevant data,
considered the comments received, and
determined that air safety and the
public interest require adopting this
final rule as proposed, except for minor
editorial changes. The FAA has
determined that these minor changes:
• Are consistent with the intent that
was proposed in the SNPRM for
addressing the unsafe condition; and
• Do not add any additional burden
upon the public than was already
proposed in the SNPRM.
Related Service Information Under 1
CFR Part 51
Bombardier has issued the following
service information:
• Service Bulletin 84–32–153,
Revision A, dated February 27, 2018,
which describes procedures for general
visual inspections of the bushings and
the lower lock link of the NLG for
discrepancies. The service information
also describes procedures for repair or
replacement of the lock link if any
discrepancy is found.
• Service Bulletin 84–32–154,
Revision A, dated November 21, 2018,
which describes procedures for
replacement of the existing lock link
with a new lock link.
This service information is reasonably
available because the interested parties
have access to it through their normal
course of business or by the means
identified in the ADDRESSES section.
Costs of Compliance
The FAA estimates that this AD
affects 64 airplanes of U.S. registry.
The FAA estimates the following
costs to comply with this AD:
ESTIMATED COSTS FOR REQUIRED ACTIONS
Action
Labor cost
Inspection .........
2 work-hours × $85 per hour =
$170 per inspection cycle.
VerDate Sep<11>2014
17:19 Sep 25, 2019
Jkt 247001
Parts cost
PO 00000
Cost per product
$0
Frm 00018
Fmt 4700
Cost on U.S. operators
$170 per inspection cycle .............
Sfmt 4700
E:\FR\FM\26SER1.SGM
$10,880 per inspection cycle.
26SER1
Federal Register / Vol. 84, No. 187 / Thursday, September 26, 2019 / Rules and Regulations
50729
ESTIMATED COSTS FOR REQUIRED ACTIONS—Continued
Action
Labor cost
Parts cost
Replacement .....
6 work-hours × $85 per hour =
$510.
The FAA has received no definitive
data that enables the agency to provide
cost estimates for the on-condition
actions specified in this AD.
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.
The FAA is 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.
khammond on DSKJM1Z7X2PROD with RULES
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:
VerDate Sep<11>2014
17:19 Sep 25, 2019
Jkt 247001
5,923
Cost per product
Cost on U.S. operators
$6,433 ...........................................
$411,712
(1) Is not a ‘‘significant regulatory
action’’ under Executive Order 12866,
(2) Will not affect intrastate aviation
in Alaska, and
(3) 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.
extended position due to loose bushings on
a lock link of the NLG locking mechanism.
The FAA is issuing this AD to address
excessive free play at the lock link of the
NLG locking mechanism, and consequent
inability to fully retract or deploy the NLG,
which could result in collapse of the NLG
and affect the safe landing of the airplane.
List of Subjects in 14 CFR Part 39
Comply with this AD within the
compliance times specified, unless already
done.
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.
§ 39.13
[Amended]
2. The FAA amends § 39.13 by adding
the following new airworthiness
directive (AD):
■
2019–18–05 De Havilland Aircraft of
Canada Limited (Type Certificate
Previously Held by Bombardier, Inc.):
Amendment 39–19732; Docket No.
FAA–2018–0453; Product Identifier
2018–NM–028–AD.
(a) Effective Date
This AD is effective October 31, 2019.
(b) Affected ADs
None.
(c) Applicability
This AD applies to De Havilland Aircraft
of Canada Limited (Type Certificate
Previously Held by Bombardier, Inc.) Model
DHC–8–400, –401, and –402 airplanes,
certificated in any category, serial numbers
4001 through 4585 inclusive, and 4587.
(d) Subject
Air Transport Association (ATA) of
America Code 32, Landing gear.
(e) Reason
This AD was prompted by reports of the
nose landing gear (NLG) locking in a partially
PO 00000
Frm 00019
Fmt 4700
Sfmt 4700
(f) Compliance
(g) Repetitive Inspections and Corrective
Actions
Except as provided by paragraphs (h) and
(i) of this AD: Do a general visual inspection
for the NLG lower lock link part number and
discrepancies of the bushings and of the
lower lock link of the NLG locking
mechanism, at the applicable time specified
in paragraph (g)(1) or (2) of this AD, in
accordance with paragraphs 3.A. and 3.B., or
3.A. and 3.D., as applicable, of the
Accomplishment Instructions of Bombardier
Service Bulletin 84–32–153, Revision A,
dated February 27, 2018. If any discrepancy
is found, before further flight, repair or
replace the NLG lower lock link, as
applicable, in accordance with paragraphs
3.B. or 3.D, as applicable, of Bombardier
Service Bulletin 84–32–153, Revision A,
dated February 27, 2018. Repeat the
inspection thereafter at intervals not to
exceed 1,600 flight cycles on any NLG lower
lock link.
(1) For airplanes on which an NLG lower
lock link has accumulated 7,200 or fewer
total flight cycles as of the effective date of
this AD: Before the accumulation of 8,000
total flight cycles on the NLG lower lock link.
(2) For airplanes on which an NLG lower
lock link has accumulated more than 7,200
total flight cycles as of the effective date of
this AD: Within 800 flight cycles on the NLG
lower lock link after the effective date of this
AD.
(h) Inspections After Repair or Replacement
of NLG Lower Lock Link
For airplanes with an NLG lower lock link
that is repaired or replaced as specified in
any one of paragraphs (h)(1) through (4) of
this AD: The next inspection specified by
paragraph (g) of this AD is required for the
NLG lower lock link on the airplane at the
applicable time specified in figure 1 to the
introductory text of paragraph (h) of this AD.
E:\FR\FM\26SER1.SGM
26SER1
50730
Federal Register / Vol. 84, No. 187 / Thursday, September 26, 2019 / Rules and Regulations
FIGURE 1 TO THE INTRODUCTORY TEXT OF PARAGRAPH (h)—Compliance Times for Next Inspection on Repaired or
Replaced NLG Lower Lock Link
Flight cycles
Compliance time
Airplanes on which the NLG lower lock link has accumulated 7,200 or Before the accumulation of 8,000 flight cycles on the NLG lower lock
fewer flight cycles since the NLG lower link was repaired or replaced.
link since the repair or replacement.
Airplanes on which the NLG lower lock link has accumulated more than Within 800 flight cycles on the NLG lower lock link after the effective
7,200 flight cycles since the NLG lower link was repaired or replaced.
date of this AD.
(1) Repaired as specified in Bombardier
Repair Drawing 8/4–32–0338;
(2) Repaired as specified in the Goodrich
Aerospace Canada Ltd. Component
Maintenance Manual, Part Number (P/N)
47300, 32–21–03;
(3) Replaced with a serviceable lock link
having P/N 47324–1 (SCR–093–17–B); or
(4) Replaced with a new lock link having
P/N 47324–1.
(i) Lock Link Excepted From Inspection
Requirements
The inspections specified in this AD are
not required for any new NLG lower lock link
having P/N 47324–3.
(j) Credit for Previous Actions
This paragraph provides credit for actions
required by paragraph (g) of this AD, if those
actions were performed before the effective
date of this AD using Bombardier Service
Bulletin 84–32–153, dated September 22,
2017, provided all drag strut joints were
greased, as specified in paragraphs 3.B.(1)(h)
and 3.D.(1)(c)5 of the Accomplishment
Instructions of this service information, using
aircraft maintenance manual (AMM) Task
12–20–01–640–802.
khammond on DSKJM1Z7X2PROD with RULES
(k) Terminating Action for Repetitive
Inspections
Within 8,000 flight cycles or 48 months on
the NLG lower lock link after the effective
date of this AD, whichever occurs first:
Replace the existing NLG lower lock link
with a new lower lock link having P/N
47324–3, in accordance with paragraphs 3.A.
and 3.B. of the Accomplishment Instructions
of Bombardier Service Bulletin 84–32–154,
Revision A, dated November 21, 2018.
Replacement of the lower lock link on the
NLG terminates the repetitive inspections
required by paragraphs (g) and (h) of this AD
for that airplane.
(l) Other FAA AD Provisions
The following provisions also apply to this
AD:
(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 New York ACO Branch,
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
VerDate Sep<11>2014
17:19 Sep 25, 2019
Jkt 247001
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 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 availability of this material at NARA,
email fedreg.legal@nara.gov, or go to: https://
www.archives.gov/federal-register/cfr/ibrlocations.html.
(m) Related Information
(1) Refer to Mandatory Continuing
Airworthiness Information (MCAI) Canadian
AD CF–2018–01R1, dated January 21, 2019,
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–2018–0453.
(2) For more information about this AD,
contact Darren Gassetto, Aerospace Engineer,
Mechanical Systems and Administrative
Services Section, New York ACO Branch,
FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516–228–
7323; 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 (n)(3) and (4) of this AD.
DEPARTMENT OF TRANSPORTATION
(n) 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.
(i) Bombardier Service Bulletin 84–32–153,
Revision A, dated February 27, 2018.
(ii) Bombardier Service Bulletin 84–32–
154, Revision A, dated November 21, 2018.
(3) For service information identified in
this AD, contact De Havilland Aircraft of
Canada Ltd., Q-Series Technical Help Desk,
123 Garratt Boulevard, Toronto, Ontario M3K
1Y5, Canada; telephone: 416–375–4000; fax:
416–375–4539; email: thd@dehavilland.com;
internet: https://devahilland.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
SUMMARY:
PO 00000
Frm 00020
Fmt 4700
Sfmt 4700
Issued in Des Moines, Washington, on
September 9, 2019.
Michael Kaszycki,
Acting Director, System Oversight Division,
Aircraft Certification Service.
[FR Doc. 2019–20897 Filed 9–25–19; 8:45 am]
BILLING CODE 4910–13–P
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA–2019–0699; Product
Identifier 2019–NM–148–AD; Amendment
39–19736; AD 2019–18–09]
RIN 2120–AA64
Airworthiness Directives; Lockheed
Martin Corporation/Lockheed Martin
Aeronautics Company Airplanes
Federal Aviation
Administration (FAA), DOT.
ACTION: Final rule; request for
comments.
AGENCY:
The FAA is adopting a new
airworthiness directive (AD) for all
Lockheed Martin Corporation/Lockheed
Martin Aeronautics Company Model
382, 382B, 382E, 382F, and 382G
airplanes; and Model C–130A, HP–C–
130A, EC–130Q, and C–130B airplanes.
This AD requires a visual inspection of
the center wing upper and lower
rainbow fittings for cracks, an eddy
current inspection of the center wing
lower rainbow fittings for cracks, and
replacement if necessary. This AD was
prompted by reports of cracked inner
tangs of the center wing lower rainbow
fittings. The FAA is issuing this AD to
address the unsafe condition on these
products.
DATES: This AD is effective October 11,
2019.
The Director of the Federal Register
approved the incorporation by reference
of a certain publication listed in this AD
as of October 11, 2019.
The FAA must receive comments on
this AD by November 12, 2019.
E:\FR\FM\26SER1.SGM
26SER1
Agencies
[Federal Register Volume 84, Number 187 (Thursday, September 26, 2019)]
[Rules and Regulations]
[Pages 50727-50730]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2019-20897]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2018-0453; Product Identifier 2018-NM-028-AD; Amendment
39-19732; AD 2019-18-05]
RIN 2120-AA64
Airworthiness Directives; De Havilland Aircraft of Canada Limited
(Type Certificate Previously Held by Bombardier, Inc.) Airplanes
AGENCY: Federal Aviation Administration (FAA), Department of
Transportation (DOT).
ACTION: Final rule.
-----------------------------------------------------------------------
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain De Havilland Aircraft of Canada Limited (Type Certificate
Previously Held by Bombardier, Inc.) Model DHC-8-400 series airplanes.
This AD was prompted by reports of the nose landing gear (NLG) locking
in a partially extended position due to loose bushings on the lock link
of the NLG locking mechanism. This AD requires repetitive inspections
of the bushings and the lower lock link of the NLG for discrepancies,
and corrective actions if necessary. This AD also requires replacement
of the lower lock link of the NLG, which terminates the repetitive
inspections. The FAA is issuing this AD to address the unsafe condition
on these products.
DATES: This AD is effective October 31, 2019.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of October 31,
2019.
ADDRESSES: For service information identified in this final rule,
contact De Havilland Aircraft of Canada Ltd., Q-Series Technical Help
Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada;
telephone: 416-375-4000; fax: 416-375-4539; email: [email protected];
internet: https://dehavilland.com. 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. It is also available on the
internet at https://www.regulations.gov by searching for and locating
Docket No. FAA-2018-0453.
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-
0453; 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 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: Darren Gassetto, Aerospace Engineer,
Mechanical Systems and Administrative Services Section, New York ACO
Branch, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7323; fax 516-794-5531.
SUPPLEMENTARY INFORMATION:
Discussion
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain Bombardier,
Inc., Model DHC-8-400 series airplanes. The NPRM published in the
Federal Register on May 30, 2018 (83 FR 24694). The NPRM was prompted
by reports of the NLG locking in a partially extended position due to
loose bushings on the lock link of the NLG locking mechanism. The NPRM
proposed to require inspecting the bushings and the lower lock link of
the NLG for discrepancies, and corrective actions if necessary.
The FAA issued a supplemental notice of proposed rulemaking (SNPRM)
to amend 14 CFR part 39 by adding an AD that would apply to certain
Bombardier, Inc., Model DHC-8-400 series airplanes. The SNPRM published
in the Federal Register on June 7, 2019 (84 FR 26601). The FAA issued
the SNPRM to add a requirement to replace the lower lock link of the
NLG, which would terminate the repetitive inspections proposed in the
NPRM. The SNPRM also proposed to reduce the applicability in the NPRM.
The FAA is issuing this AD to address excessive free play at the
lock link of the NLG locking mechanism, and consequent inability to
fully retract or deploy the NLG, which could result in collapse of the
NLG and affect the safe landing of the airplane.
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued Canadian AD CF-2018-01R1, dated
January 21, 2019 (referred to after this as the Mandatory Continuing
Airworthiness Information, or ``the MCAI''), to correct an unsafe
[[Page 50728]]
condition for certain De Havilland Aircraft of Canada Limited (Type
Certificate Previously Held by Bombardier, Inc.) Model DHC-8-400 series
airplanes. The MCAI states:
A landing incident took place whereby the aeroplane's nose
landing gear (NLG) was locked in a partially-extended position,
leading to gear collapse upon NLG touch down. The investigation
revealed that the NLG was locked in this position due to the
bushings on the lock link of the NLG locking mechanism becoming
loose. This condition was present due to insufficient interference
fit which resulted in some bushing outer diameter wear and fretting.
A dislodged bushing will also cause the bushing sealant to break.
Broken sealant allows moisture ingress and corrosion that can
accelerate free play buildup. Excessive free play at the lock link
can result in the inability to fully retract or deploy the NLG,
resulting in a risk of NLG collapse on landing.
Bombardier Inc. has developed an inspection to identify and
correct this condition. The original version of this [Canadian] AD
required a repetitive inspection [to detect discrepancies] and
corrective actions based on the inspection findings.
Revision 1 of this [Canadian] AD is issued to modify the NLG
with a lower lock with improved bushing retention and greasing
provisions. Implementing this modification is a terminating action
to this [Canadian] AD. The modification has been introduced in
production, therefore the applicability of this [Canadian] AD has
been reduced. Clarifications have also been made to the retained
text of the original version.
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-
0453.
Comments
The FAA gave the public the opportunity to participate in
developing this final rule. The following presents the comments
received on the SNPRM and the FAA's response to each comment.
Request To Revise Certain Requirements
Horizon Air asked that the requirement to do the actions specified
in paragraph (k) of the proposed AD in accordance with paragraph 3.A.
of the Accomplishment Instructions of Bombardier Service Bulletin 84-
32-154, Revision A, dated November 21, 2018, be removed. Horizon Air
stated that the job setup specified in paragraph 3.A. of the referenced
service information does not directly correct the unsafe condition.
Horizon Air would like only the actions specified in paragraph 3.B. of
the referenced service information mandated.
The FAA does not agree with the commenter's request. For some ADs,
the job setup actions in the associated service information do not
affect the actions to correct the unsafe condition. However, for this
AD, the FAA has determined that to adequately perform the corrective
actions the job setup actions specified in Bombardier Service Bulletin
84-32-154, Revision A, dated November 21, 2018, must be accomplished.
Paragraph 3.A., ``Job Set-Up,'' of Bombardier Service Bulletin 84-32-
154, Revision A, dated November 21, 2018, includes specific procedures
for the NLG to be in the correct configuration for the corrective
actions to be done and prevent damage to the equipment. Therefore, the
FAA has not changed this AD in this regard.
Request To Install Post-UTC Aerospace Systems Spare Parts
Horizon Air asked that installation of NLG drag strut assemblies
having part number 47300-7A, 47300-9A, or 47300-11A, serviced in
accordance with UTC Aerospace Systems Vendor Service Bulletin (VSB)
47300-32-138 R3, be allowed as terminating action for the repetitive
inspections. Horizon Air stated that UTC Aerospace Systems VSB 47300-
32-138 R3 can be done on units not installed on the airplane.
The FAA agrees to clarify. NLG drag strut assemblies can be
serviced (lower lock links replaced and affected parts re-identified)
by accomplishing UTC Aerospace Systems VSB 47300-32-138 R3, as
specified in Bombardier Service Bulletin 84-32-154, Revision A, dated
November 21, 2018. However, operators must still show compliance with
paragraph 3.A. and Steps 3.B.(1), 3.B.(4) and 3.B.(5) of the
Accomplishment Instructions of Bombardier Service Bulletin 84-32-154,
Revision A, dated November 21, 2018, for the removal of a unit which
has not been serviced, and installation of a serviced spare unit, in
order to correct the unsafe condition. In addition, paragraph (f) of
this AD specifies ``Comply with this AD within the compliance times
specified, unless already done.'' Therefore, if some of the corrective
actions have been done, only the remaining corrective actions must be
completed to comply with this AD. The FAA has not changed this AD in
this regard.
Explanation of Change Made to This Final Rule
The FAA has revised this final rule to identify the legal name of
the manufacturer as published in the most recent type certificate data
sheet for the affected airplane models.
Conclusion
The FAA reviewed the relevant data, considered the comments
received, and determined that air safety and the public interest
require adopting this final rule as proposed, except for minor
editorial changes. The FAA has determined that these minor changes:
Are consistent with the intent that was proposed in the
SNPRM for addressing the unsafe condition; and
Do not add any additional burden upon the public than was
already proposed in the SNPRM.
Related Service Information Under 1 CFR Part 51
Bombardier has issued the following service information:
Service Bulletin 84-32-153, Revision A, dated February 27,
2018, which describes procedures for general visual inspections of the
bushings and the lower lock link of the NLG for discrepancies. The
service information also describes procedures for repair or replacement
of the lock link if any discrepancy is found.
Service Bulletin 84-32-154, Revision A, dated November 21,
2018, which describes procedures for replacement of the existing lock
link with a new lock link.
This service information is reasonably available because the
interested parties have access to it through their normal course of
business or by the means identified in the ADDRESSES section.
Costs of Compliance
The FAA estimates that this AD affects 64 airplanes of U.S.
registry.
The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Cost on U.S.
Action Labor cost Parts cost Cost per product operators
----------------------------------------------------------------------------------------------------------------
Inspection................. 2 work-hours x $85 $0 $170 per inspection $10,880 per
per hour = $170 per cycle. inspection cycle.
inspection cycle.
[[Page 50729]]
Replacement................ 6 work-hours x $85 5,923 $6,433............... $411,712
per hour = $510.
----------------------------------------------------------------------------------------------------------------
The FAA has received no definitive data that enables the agency to
provide cost estimates for the on-condition actions specified in this
AD.
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.
The FAA is 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
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) Will not affect intrastate aviation in Alaska, and
(3) 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):
2019-18-05 De Havilland Aircraft of Canada Limited (Type Certificate
Previously Held by Bombardier, Inc.): Amendment 39-19732; Docket No.
FAA-2018-0453; Product Identifier 2018-NM-028-AD.
(a) Effective Date
This AD is effective October 31, 2019.
(b) Affected ADs
None.
(c) Applicability
This AD applies to De Havilland Aircraft of Canada Limited (Type
Certificate Previously Held by Bombardier, Inc.) Model DHC-8-400, -
401, and -402 airplanes, certificated in any category, serial
numbers 4001 through 4585 inclusive, and 4587.
(d) Subject
Air Transport Association (ATA) of America Code 32, Landing
gear.
(e) Reason
This AD was prompted by reports of the nose landing gear (NLG)
locking in a partially extended position due to loose bushings on a
lock link of the NLG locking mechanism. The FAA is issuing this AD
to address excessive free play at the lock link of the NLG locking
mechanism, and consequent inability to fully retract or deploy the
NLG, which could result in collapse of the NLG and affect the safe
landing of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Repetitive Inspections and Corrective Actions
Except as provided by paragraphs (h) and (i) of this AD: Do a
general visual inspection for the NLG lower lock link part number
and discrepancies of the bushings and of the lower lock link of the
NLG locking mechanism, at the applicable time specified in paragraph
(g)(1) or (2) of this AD, in accordance with paragraphs 3.A. and
3.B., or 3.A. and 3.D., as applicable, of the Accomplishment
Instructions of Bombardier Service Bulletin 84-32-153, Revision A,
dated February 27, 2018. If any discrepancy is found, before further
flight, repair or replace the NLG lower lock link, as applicable, in
accordance with paragraphs 3.B. or 3.D, as applicable, of Bombardier
Service Bulletin 84-32-153, Revision A, dated February 27, 2018.
Repeat the inspection thereafter at intervals not to exceed 1,600
flight cycles on any NLG lower lock link.
(1) For airplanes on which an NLG lower lock link has
accumulated 7,200 or fewer total flight cycles as of the effective
date of this AD: Before the accumulation of 8,000 total flight
cycles on the NLG lower lock link.
(2) For airplanes on which an NLG lower lock link has
accumulated more than 7,200 total flight cycles as of the effective
date of this AD: Within 800 flight cycles on the NLG lower lock link
after the effective date of this AD.
(h) Inspections After Repair or Replacement of NLG Lower Lock Link
For airplanes with an NLG lower lock link that is repaired or
replaced as specified in any one of paragraphs (h)(1) through (4) of
this AD: The next inspection specified by paragraph (g) of this AD
is required for the NLG lower lock link on the airplane at the
applicable time specified in figure 1 to the introductory text of
paragraph (h) of this AD.
[[Page 50730]]
Figure 1 to the Introductory Text of Paragraph (h)--Compliance Times for
Next Inspection on Repaired or Replaced NLG Lower Lock Link
------------------------------------------------------------------------
Flight cycles Compliance time
------------------------------------------------------------------------
Airplanes on which the NLG lower lock Before the accumulation of
link has accumulated 7,200 or fewer 8,000 flight cycles on the NLG
flight cycles since the NLG lower link lower lock link since the
was repaired or replaced. repair or replacement.
Airplanes on which the NLG lower lock Within 800 flight cycles on the
link has accumulated more than 7,200 NLG lower lock link after the
flight cycles since the NLG lower link effective date of this AD.
was repaired or replaced.
------------------------------------------------------------------------
(1) Repaired as specified in Bombardier Repair Drawing 8/4-32-
0338;
(2) Repaired as specified in the Goodrich Aerospace Canada Ltd.
Component Maintenance Manual, Part Number (P/N) 47300, 32-21-03;
(3) Replaced with a serviceable lock link having P/N 47324-1
(SCR-093-17-B); or
(4) Replaced with a new lock link having P/N 47324-1.
(i) Lock Link Excepted From Inspection Requirements
The inspections specified in this AD are not required for any
new NLG lower lock link having P/N 47324-3.
(j) Credit for Previous Actions
This paragraph provides credit for actions required by paragraph
(g) of this AD, if those actions were performed before the effective
date of this AD using Bombardier Service Bulletin 84-32-153, dated
September 22, 2017, provided all drag strut joints were greased, as
specified in paragraphs 3.B.(1)(h) and 3.D.(1)(c)5 of the
Accomplishment Instructions of this service information, using
aircraft maintenance manual (AMM) Task 12-20-01-640-802.
(k) Terminating Action for Repetitive Inspections
Within 8,000 flight cycles or 48 months on the NLG lower lock
link after the effective date of this AD, whichever occurs first:
Replace the existing NLG lower lock link with a new lower lock link
having P/N 47324-3, in accordance with paragraphs 3.A. and 3.B. of
the Accomplishment Instructions of Bombardier Service Bulletin 84-
32-154, Revision A, dated November 21, 2018. Replacement of the
lower lock link on the NLG terminates the repetitive inspections
required by paragraphs (g) and (h) of this AD for that airplane.
(l) Other FAA AD Provisions
The following provisions also apply to this AD:
(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 New York ACO
Branch, 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 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.
(m) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) Canadian AD CF-2018-01R1, dated January 21, 2019, 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-2018-0453.
(2) For more information about this AD, contact Darren Gassetto,
Aerospace Engineer, Mechanical Systems and Administrative Services
Section, New York ACO Branch, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516-228-7323; 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 (n)(3) and (4) of this AD.
(n) 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.
(i) Bombardier Service Bulletin 84-32-153, Revision A, dated
February 27, 2018.
(ii) Bombardier Service Bulletin 84-32-154, Revision A, dated
November 21, 2018.
(3) For service information identified in this AD, contact De
Havilland Aircraft of Canada Ltd., Q-Series Technical Help Desk, 123
Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone: 416-
375-4000; fax: 416-375-4539; email: [email protected]; internet:
https://devahilland.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, email [email protected], or go to: https://www.archives.gov/federal-register/cfr/ibr-locations.html.;
Issued in Des Moines, Washington, on September 9, 2019.
Michael Kaszycki,
Acting Director, System Oversight Division, Aircraft Certification
Service.
[FR Doc. 2019-20897 Filed 9-25-19; 8:45 am]
BILLING CODE 4910-13-P