Proposed Rule2021-16938
Airworthiness Directives; Bombardier, Inc., Airplanes
Primary source
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Published
August 12, 2021
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-100-1A10 airplanes. This proposed AD was prompted by a discovery that a lockwire may not have been installed on the side stay actuator pin nut of the main landing gear (MLG). This proposed AD would require inspecting the left-hand and right-hand MLG side stay actuator assembly pin nut for the presence of a lockwire, and installing a lockwire if necessary. 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 153 (Thursday, August 12, 2021)</title>
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[Federal Register Volume 86, Number 153 (Thursday, August 12, 2021)]
[Proposed Rules]
[Pages 44314-44316]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-16938]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0658; Project Identifier MCAI-2020-01582-T]
RIN 2120-AA64
Airworthiness Directives; 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 certain Bombardier, Inc., Model BD-100-1A10 airplanes. This
proposed AD was prompted by a discovery that a lockwire may not have
been installed on the side stay actuator pin nut of the main landing
gear (MLG). This proposed AD would require inspecting the left-hand and
right-hand MLG side stay actuator assembly pin nut for the presence of
a lockwire, and installing a lockwire if necessary. 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 September
27, 2021.
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 service information identified in this NPRM, contact
Bombardier, Inc., 200 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec
H4S 2A3, Canada; North America toll-free telephone 1-866-538-1247 or
direct-dial telephone 1-514-855-2999; email <a href="/cdn-cgi/l/email-protection#ec8d8fc2959980ac8d899e83c28e83818e8d9e8885899ec28f8381"><span class="__cf_email__" data-cfemail="472624693e322b07262235286925282a252635232e22356924282a">[email protected]</span></a>;
internet <a href="https://www.bombardier.com">https://www.bombardier.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.
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-2021-0658; 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, any comments
received, and other information. The street address for Docket
Operations is listed above.
FOR FURTHER INFORMATION CONTACT: Elizabeth Dowling, 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#784155190e0b551601191b17551b170b381e1919561f170e"><span class="__cf_email__" data-cfemail="e4ddc9859297c98a9d85878bc9878b97a4828585ca838b92">[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-2021-0658; Project Identifier
MCAI-2020-01582-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
the 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
Elizabeth Dowling, 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#61584c0017124c0f1800020e4c020e12210700004f060e17"><span class="__cf_email__" data-cfemail="033a2e6275702e6d7a62606c2e606c70436562622d646c75">[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
Transport Canada Civil Aviation (TCCA), which is the aviation
authority for Canada, has issued TCCA AD CF-2020-52, dated November 30,
2020 (also referred to after this as the Mandatory
[[Page 44315]]
Continuing Airworthiness Information, or the MCAI), to correct an
unsafe condition for certain Bombardier, Inc., Model BD-100-1A10
airplanes. 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-
0658.
This proposed AD was prompted by a discovery that a lockwire may
not have been installed on the side stay actuator pin nut of the MLG.
The FAA is proposing this AD to address a possible missing lockwire,
which could result in loss of the nut, and if undetected, lead to the
collapse of the affected MLG. See the MCAI for additional background
information.
Related Service Information Under 1 CFR Part 51
Bombardier has issued Service Bulletin 100-32-36, dated June 25,
2020; and Service Bulletin 350-32-012, dated June 25, 2020. This
service information describes procedures for inspecting the left-hand
and right-hand MLG side stay actuator assembly pin nut for presence of
a lockwire and installing a lockwire. 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.
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,
the FAA has been notified of the unsafe condition described in the MCAI
and service information referenced above. The FAA is proposing this AD
because the FAA evaluated all the relevant information and determined
the unsafe condition described previously is likely to exist or develop
on other products of the same type design.
Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified
in the service information already described.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 623 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
Estimated Costs for Required Actions
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Cost per Cost on U.S.
Labor cost Parts cost product operators
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1 work-hour x $85 per hour = $85............................. $0 $85 $52,955
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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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Cost per
Labor cost Parts cost product
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1 work-hour x $85 per hour = $85...... $1 $86
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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:
Bombardier, Inc.: Docket No. FAA-2021-0658; Project Identifier MCAI-
2020-01582-T.
[[Page 44316]]
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by September 27, 2021.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Bombardier, Inc., Model BD-100-1A10,
certificated in any category, serial numbers 20003 through 20780
inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 32, Landing
gear.
(e) Unsafe Condition
This AD was prompted by a discovery that a lockwire may not have
been installed on the side stay actuator pin nut of the main landing
gear (MLG). The FAA is issuing this AD to address a possible missing
lockwire, which could result in loss of the nut, and if undetected,
lead to the collapse of the affected MLG.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
Within 12 months after the effective date of this AD: Inspect
the left-hand (LH) and right-hand (RH) MLG side stay actuator
assembly pin nuts for presence of a lockwire, in accordance with
paragraph 2.B of the Accomplishment Instructions of the applicable
service information specified in paragraphs (g)(1) and (2) of this
AD. If the lockwire is missing: Before further flight, install a
lockwire in accordance with paragraph 2.C of the Accomplishment
Instructions of the applicable service information specified in
paragraphs (g)(1) and (2) of this AD.
(1) Bombardier Service Bulletin 100-32-36, dated June 25, 2020.
(2) Bombardier Service Bulletin 350-32-012, dated June 25, 2020.
(h) 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
Bombardier, Inc.'s TCCA Design Approval Organization (DAO). If
approved by the DAO, the approval must include the DAO-authorized
signature.
(i) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI), TCCA AD CF-2020-52, dated November 30, 2020, 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-2021-0658.
(2) For more information about this AD, contact Elizabeth
Dowling, 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#2c15014d5a5f0142554d4f43014f435f6c4a4d4d024b435a"><span class="__cf_email__" data-cfemail="8ab3a7ebfcf9a7e4f3ebe9e5a7e9e5f9caecebeba4ede5fc">[email protected]</span></a>.
(3) For service information identified in this AD, contact
Bombardier, Inc., 200 C[ocirc]te-Vertu Road West, Dorval,
Qu[eacute]bec H4S 2A3, Canada; North America toll-free telephone 1-
866-538-1247 or direct-dial telephone 1-514-855-2999; email
<a href="/cdn-cgi/l/email-protection#2a4b4904535f466a4b4f584504484547484b584e434f5804494547"><span class="__cf_email__" data-cfemail="2544460b5c5049654440574a0b474a48474457414c40570b464a48">[email protected]</span></a>; internet <a href="https://www.bombardier.com">https://www.bombardier.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.
Issued on August 4, 2021.
Lance T. Gant,
Director, Compliance & Airworthiness Division, Aircraft Certification
Service.
[FR Doc. 2021-16938 Filed 8-11-21; 8:45 am]
BILLING CODE 4910-13-P
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