Proposed Rule2021-20805
Airworthiness Directives; Bombardier, Inc., Airplanes
Primary source
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Published
September 27, 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 of internal corrosion on the inboard flaps found prior to regularly scheduled maintenance checks. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate a certain aircraft maintenance manual (AMM) task. 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 184 (Monday, September 27, 2021)</title>
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[Federal Register Volume 86, Number 184 (Monday, September 27, 2021)]
[Proposed Rules]
[Pages 53246-53249]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2021-20805]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2021-0832; Project Identifier MCAI-2020-01550-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 of internal
corrosion on the inboard flaps found prior to regularly scheduled
maintenance checks. This proposed AD would require revising the
existing maintenance or inspection program, as applicable, to
incorporate a certain aircraft maintenance manual (AMM) task. 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 November
12, 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., Bombardier, Inc., 200 C[ocirc]te-Vertu Road West,
Dorval, Qu[eacute]bec H4S 2A3, Canada; telephone 514-855-2999; email
<a href="/cdn-cgi/l/email-protection#5233317c2b273e123337203d7c303d3f303320363b37207c313d3f"><span class="__cf_email__" data-cfemail="ff9e9cd1868a93bf9e9a8d90d19d90929d9e8d9b969a8dd19c9092">[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-2021-0832; 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. Comments will be available in the AD docket
shortly after receipt.
FOR FURTHER INFORMATION CONTACT: Antariksh Shetty, 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#d1e8fcb0a7a2fcbfa8b0b2befcb2bea291b7b0b0ffb6bea7"><span class="__cf_email__" data-cfemail="390014584f4a145740585a56145a564a795f5858175e564f">[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-2021-0832; Project Identifier
MCAI-2020-01550-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 proposed AD.
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
Antariksh Shetty, 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#774e5a1601045a190e1614185a1418043711161659101801"><span class="__cf_email__" data-cfemail="aa9387cbdcd987c4d3cbc9c587c9c5d9eacccbcb84cdc5dc">[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-2020-49R1, dated May 20,
2021 (TCCA AD CF-2020-49R1) (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-2021-0832.
This proposed AD was prompted by reports of internal corrosion on
the inboard flaps found prior to regularly scheduled maintenance
checks. The FAA is proposing this AD to address such corrosion, which
could result in reduced structural integrity, detachment of the flap,
and consequent reduced controllability of the airplane.
See the MCAI for additional background information.
Related Service Information Under 1 CFR Part 51
Bombardier issued the following service information.
<bullet> Task 57-51-00-290-801, ``Special Detailed Inspection of
the Inboard-Flap Internal Ribs,'' of Bombardier Global Express Aircraft
Maintenance Manual--Part Two--Publication No. BD-700 AMM, Revision 90,
dated May 19, 2021.
<bullet> Task 57-51-00-290-801, ``Special Detailed Inspection of
the Inboard-Flap Internal Ribs,'' of Bombardier Global Express XRS
Aircraft Maintenance Manual--Part Two--Publication No. BD-700 XRS AMM,
Revision 68, dated May 19, 2021.
[[Page 53247]]
<bullet> Task 57-51-00-290-801, ``Special Detailed Inspection of
the Inboard-Flap Internal Ribs,'' of Bombardier Global 6000 Aircraft
Maintenance Manual--Part Two--Publication No. GL 6000 AMM, Revision 39,
dated May 19, 2021.
<bullet> Task 57-51-00-290-801, ``Special Detailed Inspection of
the Inboard-Flap Internal Ribs,'' of Bombardier Global 6500 Aircraft
Maintenance Manual--Part Two--Publication No. GL 6500 AMM, Revision 8,
dated May 19, 2021.
<bullet> Task 57-51-00-290-801, ``Special Detailed Inspection of
the Inboard-Flap Internal Ribs,'' of Bombardier Global 5000 Aircraft
Maintenance Manual--Part Two--Publication No. BD-700 AMM, Revision 71,
dated May 19, 2021.
<bullet> Task 57-51-00-290-801, ``Special Detailed Inspection of
the Inboard-Flap Internal Ribs,'' of Bombardier Global 5000 Featuring
Global Vision Flight Deck Aircraft Maintenance Manual--Part Two--
Publication No. GL 5000 GVFD AMM, Revision 38, dated May 19, 2021.
<bullet> Task 57-51-00-290-801, ``Special Detailed Inspection of
the Inboard-Flap Internal Ribs,'' of Bombardier Global 5500 Aircraft
Maintenance Manual--Part Two--Publication No. GL 5500 AMM, Revision 7,
dated May 19, 2021.
These documents describe amendments to the AMM to include
inspections of the inboard flap internal ribs for corrosion. 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 Requirements of This NPRM
This proposed AD would require revising the existing maintenance or
inspection program, as applicable, to incorporate the information
specified in AMM Task 57-51-00-290-801 and the compliance times for AMM
Task 57-51-00-290-801.
The AMM task corresponds to Part 3, Task 57-51-00-201, Special
Detailed Inspection of the Inboard-Flap Internal Ribs, of the
applicable Bombardier Time Limits/Maintenance Checks (TLMC), which is
referenced in the MCAI.
Costs of Compliance
The FAA estimates that this proposed AD affects 141 airplanes of
U.S. registry. The FAA estimates the following costs to comply with
this proposed AD:
The FAA has determined that revising the maintenance or inspection
program takes an average of 90 work-hours per operator, although the
agency recognizes that this number may vary from operator to operator.
Since operators incorporate maintenance or inspection program changes
for their affected fleet(s), the FAA has determined that a per-operator
estimate is more accurate than a per-airplane estimate. Therefore, the
agency estimates the average total cost per operator to be $7,650 (90
work-hours x $85 per work-hour).
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-2021-0832; Project Identifier MCAI-
2020-01550-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by November 12, 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
9001 through 9879 inclusive, 9998, and 60001 through 60033
inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 05, Time Limits/
Maintenance Checks.
(e) Reason
This AD was prompted was prompted by reports of internal
corrosion on the inboard flaps found prior to regularly scheduled
maintenance checks. The FAA is issuing this AD to address internal
corrosion on the inboard flaps, which could result in reduced
structural integrity, detachment of the flap, and consequent reduced
controllability of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Maintenance or Inspection Program Revision
Within 30 days after the effective date of this AD, revise the
existing maintenance or
[[Page 53248]]
inspection program, as applicable, to include the information
specified in Task 57-51-00-290-801, ``Special Detailed Inspection of
the Inboard-Flap Internal Ribs,'' of the applicable Bombardier
Aircraft Maintenance Manual (AMM) identified in figure 1 to
paragraph (g) of this AD and to include the following compliance
times for Task 57-51-00-290-801: Within 60 months after the
effective date of this AD (for the initial compliance time), and
repeat thereafter at intervals not to exceed 60 months.
[GRAPHIC] [TIFF OMITTED] TP27SE21.000
(h) No Alternative Actions or Intervals
After the existing maintenance or inspection program has been
revised as required by paragraph (g) of this AD, no alternative
actions (e.g., inspections) or intervals, may be used unless the
actions or intervals, are approved as an alternative method of
compliance (AMOC) in accordance with the procedures specified in
paragraph (i)(1) of this AD.
(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 local Flight Standards District 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
local flight standards district office/certificate holding district
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.
(j) Related Information
(1) Refer to Mandatory Continuing Airworthiness Information
(MCAI) TCCA AD CF-2020-49R1, dated May 20, 2021, for related
information. This MCAI 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-
2021-0832.
(2) For more information about this AD, contact Antariksh
Shetty, 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#bb8296dacdc896d5c2dad8d496d8d4c8fbdddada95dcd4cd"><span class="__cf_email__" data-cfemail="d7eefab6a1a4fab9aeb6b4b8fab4b8a497b1b6b6f9b0b8a1">[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; telephone 514-855-2999; email
[[Page 53249]]
<a href="/cdn-cgi/l/email-protection#39585a17404c5579585c4b56175b56545b584b5d505c4b175a5654"><span class="__cf_email__" data-cfemail="6d0c0e431418012d0c081f02430f02000f0c1f0904081f430e0200">[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 September 21, 2021.
Gaetano A. Sciortino,
Deputy Director for Strategic Initiatives, Compliance & Airworthiness
Division, Aircraft Certification Service.
[FR Doc. 2021-20805 Filed 9-24-21; 8:45 am]
BILLING CODE 4910-13-P
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