Proposed Rule2021-14611
Airworthiness Directives; Bombardier, Inc., Airplanes
Primary source
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Published
July 9, 2021
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. This proposed AD was prompted by reports that the sliding bushings in the forward engine mount system were missing. This proposed AD would require an inspection (gap check) of the front and aft engine mounts to verify the proper installation of the sliding bushings, and repair 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 129 (Friday, July 9, 2021)</title>
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[Federal Register Volume 86, Number 129 (Friday, July 9, 2021)]
[Proposed Rules]
[Pages 36243-36246]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-14611]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0560; Project Identifier MCAI-2021-00192-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-700-1A10 and BD-700-1A11
airplanes. This proposed AD was prompted by reports that the sliding
bushings in the forward engine mount system were missing. This proposed
AD would require an inspection (gap check) of the front and aft engine
mounts to verify the proper installation of the sliding bushings, and
repair 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 August 23,
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., 400 C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec
H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-7401; email
<a href="/cdn-cgi/l/email-protection#a2d6cac68cc1d0c8e2c3c7d0cd8cc0cdcfc0c3d0c6cbc7d08cc1cdcf"><span class="__cf_email__" data-cfemail="76021e125815041c36171304195814191b141704121f13045815191b">[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-2021-0560; 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: Siddeeq Bacchus, Aerospace Engineer,
Mechanical Systems and Administrative Services Section, FAA, New York
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7362; fax 516-794-5531; email <a href="/cdn-cgi/l/email-protection#dbe2f6baada8f6b5a2bab8b4f6b8b4a89bbdbabaf5bcb4ad"><span class="__cf_email__" data-cfemail="635a4e0215104e0d1a02000c4e000c10230502024d040c15">[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-2021-0560; Project Identifier
MCAI-2021-00192-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.
[[Page 36244]]
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
Siddeeq Bacchus, Aerospace Engineer, Mechanical Systems and
Administrative Services Section, FAA, New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7362; fax 516-
794-5531; email <a href="/cdn-cgi/l/email-protection#8fb6a2eef9fca2e1f6eeece0a2ece0fccfe9eeeea1e8e0f9"><span class="__cf_email__" data-cfemail="c3faeea2b5b0eeadbaa2a0aceea0acb083a5a2a2eda4acb5">[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-2021-04, dated February 15,
2021 (also referred to after this as the Mandatory Continuing
Airworthiness Information, or the MCAI), to correct an unsafe condition
for certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11
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-
0560.
This proposed AD was prompted by reports that the sliding bushings
in the forward engine mount system were missing. The FAA is proposing
this AD to address redistribution of load/stress on the mount
components, which may decrease the component fatigue life; failure of
the mount structural components could result in the loss of the engine
attachment to the airframe. See the MCAI for additional background
information.
Related Service Information Under 1 CFR Part 51
Bombardier, Inc., has issued the following service information.
<bullet> Bombardier Service Bulletin 700-1A11-71-005, dated
December 14, 2020.
<bullet> Bombardier Service Bulletin 700-71-005, dated December 14,
2020.
<bullet> Bombardier Service Bulletin 700-71-5005, dated December
14, 2020.
<bullet> Bombardier Service Bulletin 700-71-5501, dated December
14, 2020.
<bullet> Bombardier Service Bulletin 700-71-6005, December 14,
2020.
<bullet> Bombardier Service Bulletin 700-71-6501, December 14,
2020.
This service information describes procedures for verifying the
proper installation of the sliding bushings by doing an inspection (gap
check), including a gap outside acceptable limits, a missing or damaged
nut or bolt at the upper side of front mount beam, and a bolt that
turns freely with finger pressure. These documents are distinct since
they apply to different airplane serial numbers. 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 376 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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11 work-hours x $85 per hour = $935.......................... $0 $935 $351,560
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The FAA has received no definitive data on which to base the cost
estimates for the repairs specified in this proposed AD.
The FAA has included all known costs in its cost estimate.
According to the manufacturer, however, some or all of the costs of
this proposed 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
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,
[[Page 36245]]
(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-2021-0560; Project Identifier MCAI-
2021-00192-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by August 23, 2021.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Bombardier, Inc., Model BD-700-1A10 and BD-
700-1A11 airplanes, certificated in any category, serial numbers
9002 through 9879 inclusive, 9998, 60001 through 60005 inclusive,
60007, 60009, 60015, 60016, and 60024.
(d) Subject
Air Transport Association (ATA) of America Code 71, Powerplant.
(e) Unsafe Condition
This AD was prompted by reports that the sliding bushings in the
forward engine mount system were missing. The FAA is issuing this AD
to address redistribution of load/stress on the mount components,
which may decrease the component fatigue life; failure of the mount
structural components could result in the loss of the engine
attachment to the airframe.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Inspection and Corrective Action
Within 15 months or 750 flight hours, whichever occurs first,
after the effective date of this AD: Verify the proper installation
of the sliding bushings by doing an inspection (gap check) for
discrepancies of the front and aft engine mounts, in accordance with
paragraphs 2.B. through 2.F. of the Accomplishment Instructions of
the applicable service information specified in figure 1 to
paragraph (g) of this AD. If any discrepancy is found: Before
further flight, repair 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. Where a serial number is identified in more than one row
in figure 1 to paragraph (g) of this AD, the applicable service
information is identified based on the marketing designations in
paragraph 1.M., ``Equivalent Service Bulletins,'' of each service
information.
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(h) No Reporting Requirement
Although the service information identified in table 1 to
paragraph (g) of this AD specifies to submit certain information to
the manufacturer, this AD does not include that requirement.
(i) 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 TCCA; or Bombardier, Inc.'s TCCA DAO. If approved by
the DAO, the approval must include the DAO-authorized signature.
(j) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) TCCA AD CF-2021-04, dated February 15, 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-2021-0560.
(2) For more information about this AD, contact Siddeeq Bacchus,
Aerospace Engineer, Mechanical Systems and Administrative Services
Section, FAA, New York ACO Branch, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516-228-7362; fax 516-794-5531; email
<a href="/cdn-cgi/l/email-protection#596074382f2a743720383a36743a362a193f3838773e362f"><span class="__cf_email__" data-cfemail="fec7d39f888dd390879f9d91d39d918dbe989f9fd0999188">[email protected]</span></a>.
(3) For service information identified in this AD, contact
Bombardier, Inc., 400 C[ocirc]te-Vertu Road West, Dorval,
Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-5000; fax 514-855-
7401; email <a href="/cdn-cgi/l/email-protection#1c687478327f6e765c7d796e73327e73717e7d6e7875796e327f7371"><span class="__cf_email__" data-cfemail="55213d317b36273f153430273a7b373a38373427313c30277b363a38">[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 July 2, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021-14611 Filed 7-8-21; 8:45 am]
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