Rule2022-02754
Airworthiness Directives; De Havilland Aircraft of Canada Limited (Type Certificate Previously Held by Bombardier, Inc.) Airplanes
Primary source
Metadata and text below are from the Federal Register, a public-domain U.S. government work. Always verify the official published version before relying on it for any legal matter.
Published
February 10, 2022
Effective
March 17, 2022
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain De Havilland Aircraft of Canada Limited Model DHC-8-401 and - 402 airplanes. This AD was prompted by reports of a possible hard contact between the #2 top high level sensor (HLS) terminal screw head and the #6 outer wing fuel access panel stiffener flange. This AD requires removing and replacing or reworking the #6 outer wing fuel access panel assembly. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 87 Issue 28 (Thursday, February 10, 2022)</title>
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[Federal Register Volume 87, Number 28 (Thursday, February 10, 2022)]
[Rules and Regulations]
[Pages 7690-7692]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-02754]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0694; Project Identifier MCAI-2021-00305-T;
Amendment 39-21919; AD 2022-03-02]
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.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain De Havilland Aircraft of Canada Limited Model DHC-8-401 and -
402 airplanes. This AD was prompted by reports of a possible hard
contact between the #2 top high level sensor (HLS) terminal screw head
and the #6 outer wing fuel access panel stiffener flange. This AD
requires removing and replacing or reworking the #6 outer wing fuel
access panel assembly. The FAA is issuing this AD to address the unsafe
condition on these products.
DATES: This AD is effective March 17, 2022.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of March 17,
2022.
ADDRESSES: For service information identified in this final rule,
contact De Havilland Aircraft of Canada Limited, Q-Series Technical
Help Desk, 123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada;
telephone 416-375-4000; fax 416-375-4539; email <a href="/cdn-cgi/l/email-protection#dda9b5b99db9b8b5bcabb4b1b1bcb3b9f3beb2b0"><span class="__cf_email__" data-cfemail="d0a4b8b490b4b5b8b1a6b9bcbcb1beb4feb3bfbd">[email protected]</span></a>;
internet <a href="https://dehavilland.com">https://dehavilland.com</a>. You may view this service information
at the FAA, Airworthiness Products Section, Operational Safety 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 <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching
for and locating Docket No. FAA-2021-0694.
Examining the AD Docket
You may examine the AD docket on the internet at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating Docket No. FAA-2021-
0694; 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, 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: Thomas Niczky, Aerospace Engineer,
Avionics and Electrical Systems Section, FAA, New York ACO Branch, 1600
Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7347;
fax 516-794-5531; email <a href="/cdn-cgi/l/email-protection#dbe2f6baada8f6b5a2bab8b4f6b8b4a89bbdbabaf5bcb4ad"><span class="__cf_email__" data-cfemail="c6ffeba7b0b5eba8bfa7a5a9eba5a9b586a0a7a7e8a1a9b0">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Discussion
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued TCCA AD CF-2021-08, dated March 9,
2021 (TCCA AD CF-2021-08) (also referred to after this as the Mandatory
Continuing Airworthiness Information, or the MCAI), to correct an
unsafe condition for De Havilland Aircraft of Canada Limited Model DHC-
8-401 and -402 airplanes, serial numbers 4001 and 4003 through 4628
inclusive. You may examine the MCAI in the AD docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating Docket No. FAA-2021-
0694.
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain De Havilland
Aircraft of Canada Limited Model DHC-8-401 and -402 airplanes. The NPRM
published in the Federal Register on August 24, 2021 (86 FR 47258). The
NPRM was prompted by reports of a possible hard contact between the #2
top HLS terminal screw head and the #6 outer wing fuel access panel
stiffener flange. The NPRM proposed to require removing and replacing
or reworking the #6 outer wing fuel access panel assembly. The FAA is
issuing this AD to address the possibility of electrical arcing during
a lightning strike, which could be a source of ignition inside the fuel
tank. See the MCAI for additional background information.
Comments
The FAA gave the public the opportunity to participate in
developing this final rule. The following presents the comments
received on the NPRM and the FAA's response to each comment. The Air
Line Pilots Association, International, supported the NPRM.
Request To Specify the Latest Revision of the Service Information
Horizon Air requested that the specified service information in
paragraphs (g)(1) and (2) of the proposed AD be updated to the latest
revision: De Havilland Aircraft of Canada Limited Service Bulletin 84-
57-35, Revision B, dated June 9, 2021. Horizon Air also requested that
De Havilland Aircraft of Canada Limited Service Bulletin 84-57-35,
Revision A, dated February 11, 2021, be added to paragraph (i) of the
proposed AD in order to give credit for incorporating that revision.
The FAA agrees, De Havilland Aircraft of Canada Limited Service
Bulletin 84-57-35, Revision B, dated June 9, 2021, revises a NOTE and
steps to include all part numbers of access panel #6. These changes do
not affect operators who use previous revisions of the service
information to show compliance with this AD. There are no substantive
changes to the procedures between Revision B of the service information
and Revision A of the service information, which was proposed as
required in the NPRM. The FAA has updated this AD as requested.
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 with the change described
[[Page 7691]]
previously and minor editorial changes. The FAA has determined that
these minor changes:
<bullet> Are consistent with the intent that was proposed in the
NPRM for addressing the unsafe condition; and
<bullet> Do not add any additional burden upon the public than was
already proposed in the NPRM.
The FAA also determined that these changes will not increase the
economic burden on any operator or increase the scope of this final
rule.
Related Service Information Under 1 CFR Part 51
De Havilland Aircraft of Canada Limited has issued Service Bulletin
84-57-35, Revision B, dated June 9, 2021. This service information
describes procedures for replacing or reworking the #6 outer wing fuel
access panel assembly. The rework involves an eddy current or
fluorescent liquid penetrant inspection of the rework area for crack
indications. 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 54 airplanes of U.S.
registry. For either replacement or repair of the #6 outer wing fuel
access panel, depending on the option selected by the operator to
comply with this AD, the FAA estimates the following costs:
Estimated Costs
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Action Labor cost Parts cost Cost per product
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Replacement.................. Up to 10 work-hours x $85 per Up to $16,430........... Up to $17,280.
hour = Up to $850.
Repair....................... 13 work-hours x $85 per hour $49..................... $1,154.
= $1,105.
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The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this AD may be covered under warranty, thereby reducing the cost impact
on affected operators.
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.
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:
2022-03-02 De Havilland Aircraft of Canada Limited (Type Certificate
Previously Held by Bombardier, Inc.): Amendment 39-21919; Docket No.
FAA-2021-0694; Project Identifier MCAI-2021-00305-T.
(a) Effective Date
This airworthiness directive (AD) is effective March 17, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to De Havilland Aircraft of Canada Limited Model
DHC-8-401 and -402 airplanes, certificated in any category, serial
numbers 4001 and 4003 through 4628 inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 57, Wings.
(e) Unsafe Condition
This AD was prompted by reports of a possible hard contact
between the #2 top high level sensor (HLS) terminal screw head and
the #6 outer wing fuel access panel stiffener flange. The FAA is
issuing this AD to address the possibility of electrical arcing
during a lightning strike, which could be a source of ignition
inside the fuel tank.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
Within 8,000 flight hours after the effective date of this AD:
Do the actions specified in paragraph (g)(1) or (2) of this AD.
(1) Replace the #6 outer wing fuel access panel assembly in
accordance with Section 3.B., Part A, of the Accomplishment
Instructions of De Havilland Aircraft of Canada Limited Service
Bulletin 84-57-35, Revision B, dated June 9, 2021.
(2) Rework the #6 outer wing fuel access panel assembly,
including an eddy current or fluorescent liquid penetrant inspection
for crack indications of the rework area, in accordance with Section
3.B., Part B, of the Accomplishment Instructions of De Havilland
Aircraft of Canada Limited Service Bulletin 84-57-35, Revision B,
dated June 9, 2021. If any crack indication is found, before further
flight, repair using a method approved in accordance with the
procedures specified in paragraph (j)(2) of this AD.
(h) Parts Installation Prohibition
As of the effective date of this AD, no person may install a #6
outer wing fuel access panel assembly, part numbers (P/Ns) 85714233-
003/-004 and 85714233-005/-006, on any airplane.
[[Page 7692]]
(i) 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 De Havilland Aircraft of Canada Limited
Service Bulletin 84-57-35, dated October 1, 2020; or De Havilland
Aircraft of Canada Limited Service Bulletin 84-57-35, Revision A,
dated February 11, 2021.
(j) 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 responsible Flight Standards Office, as appropriate. If
sending information directly to the manager of the certification
office, send it to ATTN: Program Manager, Continuing Operational
Safety, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516-228-7300; fax 516-794-5531. Before
using any approved AMOC, notify your appropriate principal
inspector, or lacking a principal inspector, the manager of the
responsible Flight Standards Office.
(2) Contacting the Manufacturer: For any requirement in this AD
to obtain instructions from a manufacturer, the instructions must be
accomplished using a method approved by the Manager, New York ACO
Branch, FAA; or Transport Canada Civil Aviation (TCCA); or De
Havilland Aircraft of Canada Limited's TCCA Design Approval
Organization (DAO). If approved by the DAO, the approval must
include the DAO-authorized signature.
(k) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) TCCA AD CF-2021-08, dated March 9, 2021, for related
information. This MCAI may be found in the AD docket on the internet
at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating Docket
No. FAA-2021-0694.
(2) For more information about this AD, contact Thomas Niczky,
Aerospace Engineer, Avionics and Electrical Systems Section, FAA,
New York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; telephone 516-228-7347; fax 516-794-5531; email <a href="/cdn-cgi/l/email-protection#576e7a3621247a392e3634387a3438241731363679303821"><span class="__cf_email__" data-cfemail="221b0f4354510f4c5b43414d0f414d51624443430c454d54">[email protected]</span></a>.
(3) Service information identified in this AD that is not
incorporated by reference is available at the addresses specified in
paragraphs (l)(4) and (5) of this AD.
(l) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this service information as applicable to do
the actions required by this AD, unless this AD specifies otherwise.
(i) De Havilland Aircraft of Canada Limited Service Bulletin 84-
57-35, Revision B, dated June 9, 2021.
(ii) [Reserved]
(3) For service information identified in this AD, contact De
Havilland Aircraft of Canada Limited, Q-Series Technical Help Desk,
123 Garratt Boulevard, Toronto, Ontario M3K 1Y5, Canada; telephone
416-375-4000; fax 416-375-4539; email <a href="/cdn-cgi/l/email-protection#ed998589ad8988858c9b8481818c8389c38e8280"><span class="__cf_email__" data-cfemail="cfbba7ab8fabaaa7aeb9a6a3a3aea1abe1aca0a2">[email protected]</span></a>; internet
<a href="https://dehavilland.com">https://dehavilland.com</a>.
(4) You may view this service information at the FAA,
Airworthiness Products Section, Operational Safety 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 <a href="/cdn-cgi/l/email-protection#4b2d39652225383b2e283f2224250b252a392a652c243d"><span class="__cf_email__" data-cfemail="6c0a1e4205021f1c090f180503022c020d1e0d420b031a">[email protected]</span></a>, or go to: <a href="http://www.archives.gov/federal-register/cfr/ibr-locations.html">http://www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on January 19, 2022.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2022-02754 Filed 2-9-22; 8:45 am]
BILLING CODE 4910-13-P
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