Rule2022-01569
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
January 27, 2022
Effective
March 3, 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-8-400, -401, and -402 airplanes. This AD was prompted by a report that the epoxy primer on the internal bore of the nacelle and landing gear attachment pins was not applied, and corrosion on the internal bore of the wing rear spar attachment pins was found. This AD requires doing a detailed visual inspection of the nacelle to wing rear spar attachment pins, and the nacelle and landing gear attachment pins, for any corrosion, and doing all applicable corrective actions. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
<html>
<head>
<title>Federal Register, Volume 87 Issue 18 (Thursday, January 27, 2022)</title>
</head>
<body><pre>
[Federal Register Volume 87, Number 18 (Thursday, January 27, 2022)]
[Rules and Regulations]
[Pages 4145-4148]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-01569]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0514; Project Identifier MCAI-2020-01570-T;
Amendment 39-21890; AD 2022-01-02]
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.
-----------------------------------------------------------------------
SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain De Havilland Aircraft of Canada Limited Model DHC-8-400, -401,
and -402 airplanes. This AD was prompted by a report that the epoxy
primer on the internal bore of the nacelle and landing gear attachment
pins was not applied, and corrosion on the internal bore of the wing
rear spar attachment pins was found. This AD requires doing a detailed
visual inspection of the nacelle to wing rear spar attachment pins, and
the nacelle and landing gear attachment pins, for any corrosion, and
doing all applicable corrective actions. The FAA is issuing this AD to
address the unsafe condition on these products.
DATES: This AD is effective March 3, 2022.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of March 3,
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#d4a0bcb094b0b1bcb5a2bdb8b8b5bab0fab7bbb9"><span class="__cf_email__" data-cfemail="45312d210521202d24332c2929242b216b262a28">[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-2021-0514.
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-
0514; 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: Deep Gaurav, Aerospace Engineer,
Airframe and Propulsion Section, FAA, New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300; fax 516-
794-5531; email <a href="/cdn-cgi/l/email-protection#d7eefab6a1a4fab9aeb6b4b8fab4b8a497b1b6b6f9b0b8a1"><span class="__cf_email__" data-cfemail="5d64703c2b2e7033243c3e32703e322e1d3b3c3c733a322b">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Background
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued TCCA AD CF-2020-51R1, dated February
24, 2021 (also referred to as the Mandatory Continuing Airworthiness
Information, or the MCAI), to correct an unsafe condition for certain
De Havilland Aircraft of Canada Limited Model DHC-8-400, -401, and -402
airplanes. You may examine the MCAI 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-2021-0514.
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-8-400, -401, and -402 airplanes.
The NPRM published in the Federal Register on June 29, 2021 (86 FR
34163). The NPRM was prompted by a report that the epoxy
[[Page 4146]]
primer on the internal bore of the nacelle and landing gear attachment
pins was not applied, and corrosion on the internal bore of the wing
rear spar attachment pins was found. The NPRM proposed to require doing
a detailed visual inspection of the nacelle to wing rear spar
attachment pins, and the nacelle and landing gear attachment pins, for
any corrosion, and doing all applicable corrective actions. The FAA is
issuing this AD to address premature corrosion and subsequent failure
of the nacelle to landing gear and nacelle to rear wing spar attachment
pins, which if undetected, could lead to a single or dual collapse of
the main landing gear. 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.
Request To Use the Latest Service Information
Horizon Air requested that the latest service information be used
in the proposed AD. Horizon Air stated that since the NPRM was issued,
the applicable service information specified in figure 1 to paragraph
(g) of the proposed AD has been revised to De Havilland Aircraft of
Canada Limited Service Bulletin 84-54-31, Revision C, dated March 15,
2021. Horizon Air also requested that paragraph (h)(3) of the proposed
AD be revised to allow credit for De Havilland Aircraft of Canada
Limited Service Bulletin 84-54-31, Revision B, dated February 21, 2020,
if those actions were performed before the effective date of the
proposed AD.
The FAA agrees to use the latest service information in this AD. De
Havilland Aircraft of Canada Limited Service Bulletin 84-54-31,
Revision C, dated March 15, 2021, adds information to the
``Effectivity'' section for production airplanes, i.e., specifying
airplane line numbers that will have certain ModSums (for application
of primer and corrosion preventive compound) installed before delivery.
This information does not affect the applicability of this AD.
De Havilland Aircraft of Canada Limited Service Bulletin 84-54-31,
Revision C, dated March 15, 2021, also adds additional acceptable
polyurethane enamel, and clarifies that production pins can be used to
replace corroded pins. 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 C of the service information and Revision B, which was
proposed as required in the NPRM. Further, the technical content of
this AD and the service information remains unchanged. The FAA has
revised the ``Related Service Information Under 1 CFR part 51''
paragraph, Figure 1 to paragraph (g) of this AD, and paragraphs (g)(2)
and (i) of this AD accordingly. The FAA has also added paragraph (h)(4)
of this AD to specify the requested credit.
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 changes described 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
84-54-28, Revision B, dated January 24, 2020; and Service Bulletin 84-
54-31, Revision C, dated March 15, 2021. This service information
describes procedures for doing a detailed visual inspection of the
nacelle to wing rear spar attachment pins, and the nacelle and landing
gear attachment pins, for any corrosion; and doing all applicable
corrective actions. Corrective actions include applying epoxy primer to
the bore surface of the pins, a fluorescent magnetic particle
inspection for any cracking, corrosion removal, reworking and part
marking certain pins, and replacing any cracked or corroded pins with
serviceable pins. These documents are distinct since they apply to
different airplane configurations.
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 will affect 41 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Labor cost Parts cost Cost per product Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
Up to 9 work-hours x $85 per hour $0 Up to $765................... Up to $31,365.
= Up to $765.
----------------------------------------------------------------------------------------------------------------
The FAA has received no definitive data on which to base the 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.
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
[[Page 4147]]
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:
2022-01-02 De Havilland Aircraft of Canada Limited (Type Certificate
Previously Held by Bombardier, Inc.): Amendment 39-21890; Docket No.
FAA-2021-0514; Project Identifier MCAI-2020-01570-T.
(a) Effective Date
This airworthiness directive (AD) is effective March 3, 2022.
(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, 4003 through 4550 inclusive, 4583 through 4585
inclusive, 4587, 4588, and 4590.
(d) Subject
Air Transport Association (ATA) of America Code 54, Nacelles/
pylons.
(e) Unsafe Condition
This AD was prompted by a report that the epoxy primer on the
internal bore of the nacelle and landing gear attachment pins was
not applied, and corrosion on the internal bore of the wing rear
spar attachment pins was found. The FAA is issuing this AD to
address premature corrosion and subsequent failure of the nacelle to
landing gear and nacelle to rear wing spar attachment pins, which if
undetected, could lead to a single or dual collapse of the main
landing gear.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Inspection and Corrective Actions
(1) At the applicable compliance times specified in paragraphs
(g)(1)(i) through (iii) of this AD: Do a detailed visual inspection
of the nacelle to wing rear spar attachment pins, and the nacelle
and landing gear attachment pins, for any cracking or corrosion, and
do all applicable corrective actions, in accordance with Part A or
Part B, as applicable, of Section 3., ``Accomplishment
Instructions,'' of the applicable service information specified in
figure 1 to paragraph (g) of this AD. Do all applicable corrective
actions before further flight.
[GRAPHIC] [TIFF OMITTED] TR27JA22.005
(i) For nacelle to wing rear spar attachment pins, or nacelle
and landing gear attachment pins, as applicable, that have
accumulated less than 26,000 flight cycles as of the effective date
of this AD, and have been in service less than 12 years from their
entry-into-service as of the effective date of this AD: Prior to the
pins reaching 14 years from their entry-into-service, or prior to
the airplane reaching 30,000 total flight cycles, whichever occurs
first.
(ii) For nacelle to wing rear spar attachment pins, or nacelle
and landing gear attachment pins, as applicable, that have
accumulated 26,000 flight cycles or more as of the effective date of
this AD, or have been in service 12 years or more from their entry-
into-service as of the effective date of this AD: Within 4 years or
8,000 flight hours after the effective date of this AD, whichever
occurs first.
(iii) For airplanes on which the actions specified in Bombardier
Service Bulletin 84-54-27, dated August 11, 2017; or Bombardier
Service Bulletin 84-54-28, dated August 11, 2017; as applicable,
have been accomplished: Within 14 years or 30,000 flight cycles
after the date of incorporation of Bombardier Service Bulletin 84-
54-27, dated August 11, 2017; or Bombardier Service Bulletin 84-54-
28, dated August 11, 2017; as applicable, whichever occurs first.
(2) For serial numbers 4583, 4584, 4585, 4587, 4588 and 4590: At
the applicable compliance times specified in paragraphs (g)(1)(i)
through (iii) of this AD, re-part mark the yoke attachment pin, in
accordance with Part B of the Accomplishment Instructions of De
Havilland Aircraft of Canada Limited Service Bulletin 84-54-31,
Revision C, dated March 15, 2021.
(h) 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 the applicable service information specified
in paragraphs (h)(1) through (4) of this AD.
(1) Bombardier Service Bulletin 84-54-28, Revision A, dated
April 10, 2019.
(2) Bombardier Service Bulletin 84-54-31, dated May 1, 2019.
(3) Bombardier Service Bulletin 84-54-31, Revision A, dated
October 15, 2019.
(4) De Havilland Aircraft of Canada Limited Service Bulletin 84-
54-31, Revision B, dated February 21, 2020.
(i) No Reporting Requirement
Although De Havilland Aircraft of Canada Limited Service
Bulletin 84-54-28, Revision B, dated January 24, 2020; and De
Havilland
[[Page 4148]]
Aircraft of Canada Limited Service Bulletin 84-54-31, Revision C,
dated March 15, 2021; specify to submit certain information to the
manufacturer, this AD does not include that requirement.
(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-2020-51R1, dated February 24, 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-2021-0514.
(2) For more information about this AD, contact Deep Gaurav,
Aerospace Engineer, Airframe and Propulsion Section, FAA, New York
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7300; fax 516-794-5531; email <a href="/cdn-cgi/l/email-protection#dee7f3bfa8adf3b0a7bfbdb1f3bdb1ad9eb8bfbff0b9b1a8"><span class="__cf_email__" data-cfemail="a59c88c4d3d688cbdcc4c6ca88c6cad6e5c3c4c48bc2cad3">[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)(3) and (4) 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-
54-28, Revision B, dated January 24, 2020.
(ii) De Havilland Aircraft of Canada Limited Service Bulletin
84-54-31, Revision C, dated March 15, 2021.
(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#582c303c183c3d30392e31343439363c763b3735"><span class="__cf_email__" data-cfemail="51253935113534393027383d3d303f357f323e3c">[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#7a1c08541314090a1f190e1315143a141b081b541d150c"><span class="__cf_email__" data-cfemail="ef899dc186819c9f8a8c9b868081af818e9d8ec1888099">[email protected]</span></a>, or go to: <a href="https://www.archives.gov/federal-register/cfr/ibr-locations.html">https://www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on December 21, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2022-01569 Filed 1-26-22; 8:45 am]
BILLING CODE 4910-13-P
</pre><script data-cfasync="false" src="/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js"></script></body>
</html>Indexed from Federal Register on January 27, 2022.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.