Proposed Rule2021-27833
Airworthiness Directives; Airbus Canada Limited Partnership (Type Certificate Previously Held by C Series Aircraft Limited Partnership (CSALP); 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
December 27, 2021
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500- 1A11 airplanes. This proposed AD was prompted by reports of in-service findings of corrosion on the flange of the main landing gear (MLG) lower spindle pin. This proposed AD would require repetitive inspections of the left and right MLG lower spindle pins to detect corrosion, and applicable repair or replacement if necessary, as specified in a Transport Canada Civil Aviation (TCCA) AD, which is proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 86 Issue 245 (Monday, December 27, 2021)</title>
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[Federal Register Volume 86, Number 245 (Monday, December 27, 2021)]
[Proposed Rules]
[Pages 73194-73197]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-27833]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-1076; Project Identifier MCAI-2021-00560-T]
RIN 2120-AA64
Airworthiness Directives; Airbus Canada Limited Partnership (Type
Certificate Previously Held by C Series Aircraft Limited Partnership
(CSALP); Bombardier, Inc.) Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Notice of proposed rulemaking (NPRM).
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SUMMARY: The FAA proposes to adopt a new airworthiness directive (AD)
for all Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500-
1A11 airplanes. This proposed AD was prompted by reports of in-service
findings of corrosion on the flange of the main landing gear (MLG)
lower spindle pin. This proposed AD would require repetitive
inspections of the left and right MLG lower spindle pins to detect
corrosion, and applicable repair or replacement if necessary, as
specified in a Transport Canada Civil Aviation (TCCA) AD, which is
proposed for incorporation by reference. The FAA is proposing this AD
to address the unsafe condition on these products.
DATES: The FAA must receive comments on this proposed AD by February
10, 2022.
ADDRESSES: You may send comments, using the procedures found in 14 CFR
11.43 and 11.45, by any of the following methods:
<bullet> Federal eRulemaking Portal: Go to <a href="https://www.regulations.gov">https://www.regulations.gov</a>. Follow the instructions for submitting comments.
<bullet> Fax: 202-493-2251.
<bullet> Mail: U.S. Department of Transportation, Docket
Operations, M-30, West Building Ground Floor, Room W12-140, 1200 New
Jersey Avenue SE, Washington, DC 20590.
<bullet> Hand Delivery: Deliver to Mail address above between 9
a.m. and 5 p.m., Monday through Friday, except Federal holidays.
For material that will be incorporated by reference (IBR) in this
AD, contact TCCA, Transport Canada National Aircraft Certification, 159
Cleopatra Drive, Nepean, Ontario, K1A 0N5, Canada; telephone 888-663-
3639; email <a href="/cdn-cgi/l/email-protection#0a4b4e2749444a7e69246d6924696b"><span class="__cf_email__" data-cfemail="a9e8ed84eae7e9ddca87ceca87cac8">[email protected]</span></a>; internet <a href="https://tc.canada.ca/en/aviation">https://tc.canada.ca/en/aviation</a>.
You may view this IBR material 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 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-
1076.
Examining the AD Docket
You may examine the AD docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by
searching for and locating Docket No. FAA-2021-1076; 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 NPRM, the
mandatory continuing airworthiness information (MCAI), any comments
received, and other information. The street address for Docket
Operations is listed above.
FOR FURTHER INFORMATION CONTACT: Chirayu Gupta, Aerospace Engineer,
Mechanical Systems and Administrative
[[Page 73195]]
Services 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#c9f0e4a8bfbae4a7b0a8aaa6e4aaa6ba89afa8a8e7aea6bf"><span class="__cf_email__" data-cfemail="10293d7166633d7e6971737f3d737f63507671713e777f66">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written relevant data, views, or
arguments about this proposal. Send your comments to an address listed
under ADDRESSES. Include ``Docket No. FAA-2021-1076; Project Identifier
MCAI-2021-00560-T'' at the beginning of your comments. The most helpful
comments reference a specific portion of the proposal, explain the
reason for any recommended change, and include supporting data. The FAA
will consider all comments received by the closing date and may amend
this proposal because of those comments.
Except for Confidential Business Information (CBI) as described in
the following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
<a href="https://www.regulations.gov">https://www.regulations.gov</a>, including any personal information you
provide. The agency will also post a report summarizing each
substantive verbal contact received about this NPRM.
Confidential Business Information
CBI is commercial or financial information that is both customarily
and actually treated as private by its owner. Under the Freedom of
Information Act (FOIA) (5 U.S.C. 552), CBI is exempt from public
disclosure. If your comments responsive to this NPRM contain commercial
or financial information that is customarily treated as private, that
you actually treat as private, and that is relevant or responsive to
this NPRM, it is important that you clearly designate the submitted
comments as CBI. Please mark each page of your submission containing
CBI as ``PROPIN.'' The FAA will treat such marked submissions as
confidential under the FOIA, and they will not be placed in the public
docket of this NPRM. Submissions containing CBI should be sent to
Chirayu Gupta, Aerospace Engineer, Mechanical Systems and
Administrative Services 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#83baaee2f5f0aeedfae2e0ecaee0ecf0c3e5e2e2ade4ecf5"><span class="__cf_email__" data-cfemail="3d04105c4b4e1053445c5e52105e524e7d5b5c5c135a524b">[email protected]</span></a>. Any commentary that the FAA
receives which is not specifically designated as CBI will be placed in
the public docket for this rulemaking.
Background
TCCA, which is the aviation authority for Canada, has issued TCCA
AD CF-2021-22, issued July 5, 2021 (TCCA AD CF-2021-22) (also referred
to as the Mandatory Continuing Airworthiness Information, or the MCAI),
to correct an unsafe condition for all Airbus Canada Limited
Partnership Model BD-500-1A10 and BD-500-1A11 airplanes. TCCA AD CF-
2021-22 superseded TCCA AD CF-2021-18, dated May 6, 2021, to correct an
error in a compliance time.
This proposed AD was prompted by reports of in-service findings of
corrosion on the flange of the MLG lower spindle pin. Investigation
revealed that micro-fretting of the anti-rotation washer at the spindle
pin flange surface causes abrasion of the protective coating, and
leaves the flange area susceptible to corrosion. The MLG lower spindle
pin is a principal structural element (PSE); if the corrosion
progresses from the flange to the adjacent radius area, it can lead to
low cycle fatigue (LCF) cracking. The FAA is proposing this AD to
address corrosion and subsequent cracking of the MLG lower spindle pin,
which could result in failure of the pin, and consequent collapse of
the MLG. See the MCAI for additional background information.
Related Service Information Under 1 CFR Part 51
TCCA AD CF-2021-22 specifies procedures for repetitive inspections
(including visual and liquid penetrant inspections and nondestructive
tests) of the left and right MLG lower spindle pins for corrosion, and
applicable repair or replacement of the MLG lower spindle pin. This
material 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.
FAA's Determination
This product has been approved by the aviation authority of another
country, and is approved for operation in the United States. Pursuant
to the FAA's bilateral agreement with the State of Design Authority, it
has notified the FAA of the unsafe condition described in the MCAI
referenced above. The FAA is issuing this NPRM after determining that
the unsafe condition described previously is likely to exist or develop
in other products of the same type design.
Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified
in TCCA AD CF-2021-22 described previously, except for any differences
identified as exceptions in the regulatory text of this proposed AD.
Explanation of Required Compliance Information
In the FAA's ongoing efforts to improve the efficiency of the AD
process, the FAA developed a process to use some civil aviation
authority (CAA) ADs as the primary source of information for compliance
with requirements for corresponding FAA ADs. The FAA has been
coordinating this process with manufacturers and CAAs. As a result, the
FAA proposes to incorporate TCCA AD CF-2021-22 by reference in the FAA
final rule. This proposed AD would, therefore, require compliance with
TCCA AD CF-2021-22 in its entirety through that incorporation, except
for any differences identified as exceptions in the regulatory text of
this proposed AD. Using common terms that are the same as the heading
of a particular section in TCCA AD CF-2021-22 does not mean that
operators need comply only with that section. For example, where the AD
requirement refers to ``all required actions and compliance times,''
compliance with this AD requirement is not limited to the section
titled ``Corrective Actions'' in TCCA AD CF-2021-22. Service
information required by TCCA AD CF-2021-22 for compliance will be
available at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating
Docket No. FAA-2021-1076 after the FAA final rule is published.
Interim Action
The FAA considers this proposed AD interim action. If final action
is later identified, the FAA might consider further rulemaking then.
Costs of Compliance
The FAA estimates that this proposed AD would affect 51 airplanes
of U.S. registry. The FAA estimates the following costs to comply with
this proposed AD:
[[Page 73196]]
Estimated Costs for Required Actions
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Labor cost Parts cost Cost per product Cost on U.S. operators
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Up to 25 work-hours x $85 per hour $0 Up to $2,125................ Up to $108,375 per inspection
= $2,125. cycle.
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The FAA estimates the following costs to do any necessary on-
condition actions that would be required based on the results of any
required actions. The FAA has no way of determining the number of
aircraft that might need these on-condition actions:
Estimated Costs of On-Condition Actions *
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Labor cost Parts cost Cost per product
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Up to 3 work-hours x $85 per hour = $255 Up to $33,038..................... Up to $33,293.
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* Table does not include estimated costs for reporting.
The FAA estimates that it would take 1 work-hour per product to
comply with the on-condition reporting requirement in this proposed AD.
The average labor rate is $85 per hour. Based on these figures, the FAA
estimates the cost of reporting the inspection results on U.S.
operators to be $85 per product.
According to the manufacturer, some or all of the costs of this
proposed AD may be covered under warranty, thereby reducing the cost
impact on affected individuals. The FAA does not control warranty
coverage for affected individuals. As a result, the FAA has included
all known costs in the cost estimate.
Paperwork Reduction Act
A federal agency may not conduct or sponsor, and a person is not
required to respond to, nor shall a person be subject to penalty for
failure to comply with a collection of information subject to the
requirements of the Paperwork Reduction Act unless that collection of
information displays a currently valid OMB Control Number. The OMB
Control Number for this information collection is 2120-0056. Public
reporting for this collection of information is estimated to take
approximately 1 hour per response, including the time for reviewing
instructions, searching existing data sources, gathering and
maintaining the data needed, and completing and reviewing the
collection of information. All responses to this collection of
information are mandatory. Send comments regarding this burden estimate
or any other aspect of this collection of information, including
suggestions for reducing this burden, to Information Collection
Clearance Officer, Federal Aviation Administration, 10101 Hillwood
Parkway, Fort Worth, TX 76177-1524.
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
The FAA determined that this proposed AD would not have federalism
implications under Executive Order 13132. This proposed AD would 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 this proposed
regulation:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Would not affect intrastate aviation in Alaska, and
(3) Would 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.
The Proposed Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA proposes to amend 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:
Airbus Canada Limited Partnership (Type Certificate Previously Held
by C Series Aircraft Limited Partnership (CSALP); Bombardier, Inc.):
Docket No. FAA-2021-1076; Project Identifier MCAI-2021-00560-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by February 10, 2022.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all Airbus Canada Limited Partnership (type
certificate previously held by C Series Aircraft Limited Partnership
(CSALP); Bombardier, Inc.) Model BD-500-1A10 and BD-500-1A11
airplanes, certificated in any category.
[[Page 73197]]
(d) Subject
Air Transport Association (ATA) of America Code 32, Landing
Gear.
(e) Unsafe Condition
This AD was prompted by reports of in-service findings of
corrosion on the flange of the main landing gear (MLG) lower spindle
pin. The FAA is issuing this AD to address corrosion and subsequent
cracking of the MLG lower spindle pin, which could result in failure
of the pin, and consequent collapse of the MLG.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Requirements
Except as specified in paragraph (h) of this AD: Comply with all
required actions and compliance times specified in, and in
accordance with, Transport Canada Civil Aviation (TCCA) AD CF-2021-
22, issued July 5, 2021 (TCCA AD CF-2021-22).
(h) Exceptions to TCCA AD 2021-22
(1) Where TCCA AD CF-2021-22 refers to May 20, 2021, the
effective date of TCCA AD CF-2021-18, this AD requires using the
effective date of this AD.
(2) Where the service information identified in TCCA AD CF-2021-
22 specifies to report inspection results, for this AD, report only
positive findings of the first four inspections at the applicable
time specified in paragraph (h)(2)(i) or (ii) of this AD.
(i) If the inspection was done on or after the effective date of
this AD: Submit the report within 30 days after the inspection.
(ii) If the inspection was done before the effective date of
this AD: Submit the report within 30 days after the effective date
of this AD.
(i) Additional 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; phone: 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 TCCA; or Airbus Canada Limited Partnership's TCCA
Design Approval Organization (DAO). If approved by the DAO, the
approval must include the DAO-authorized signature.
(j) Related Information
(1) For TCCA AD CF-2021-22, contact TCCA, Transport Canada
National Aircraft Certification, 159 Cleopatra Drive, Nepean,
Ontario K1A 0N5, Canada; telephone 888-663-3639; email <a href="/cdn-cgi/l/email-protection#febfbad3bdb0be8a9dd0999dd09d9f"><span class="__cf_email__" data-cfemail="2362670e606d6357400d44400d4042">[email protected]</span></a>; internet <a href="https://tc.canada.ca/en/aviation">https://tc.canada.ca/en/aviation</a>. You may view
this material 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. This material may be found in the AD docket at <a href="https://www.regulations.gov">https://www.regulations.gov</a> by searching for and locating Docket No. FAA-
2021-1076.
(2) For more information about this AD, contact Chirayu Gupta,
Aerospace Engineer, Mechanical Systems and Administrative Services
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#526b7f3324217f3c2b33313d7f313d21123433337c353d24"><span class="__cf_email__" data-cfemail="734a5e1205005e1d0a12101c5e101c00331512125d141c05">[email protected]</span></a>.
Issued on December 16, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-27833 Filed 12-23-21; 8:45 am]
BILLING CODE 4910-13-P
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