Proposed Rule2022-25113
Airworthiness Directives; Bombardier, Inc., Airplanes
Primary source
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Published
November 18, 2022
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 reports of cracks found in the tailcone upper firewall where the auxiliary power unit (APU) muffler electrical bonding strap is attached. This proposed AD would require a detailed visual inspection of the tailcone upper firewall for defects, rework by replacement of the APU electrical bonding strap, 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 87 Issue 222 (Friday, November 18, 2022)</title>
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[Federal Register Volume 87, Number 222 (Friday, November 18, 2022)]
[Proposed Rules]
[Pages 69225-69228]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2022-25113]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2022-1480; Project Identifier MCAI-2022-00548-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 reports of cracks found in the tailcone
upper firewall where the auxiliary power unit (APU) muffler electrical
bonding strap is attached. This proposed AD would require a detailed
visual inspection of the tailcone upper firewall for defects, rework by
replacement of the APU electrical bonding strap, 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 January 3,
2023.
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="http://regulations.gov">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.
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2022-1480; 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.
Material Incorporated by Reference:
<bullet> For service information identified in this NPRM, contact
Bombardier Business Aircraft Customer Response Center, 400 C[ocirc]te-
Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada; telephone 514-
855-2999; email <a href="/cdn-cgi/l/email-protection#abcac885d2dec7ebcaced9c48597ca8bc3d9cecd96" http: bombardier.com">bombardier.com</a>">ac.yul@aero.<a href="http://bombardier.com">bombardier.com</a></a>; website <a href="http://bombardier.com">bombardier.com</a>.
<bullet> 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.
FOR FURTHER INFORMATION CONTACT: Yaser Osman, Aerospace Engineer,
Airframe and Propulsion Section, FAA, New York ACO Branch, 1600 Stewart
Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-7300; email <a href="/cdn-cgi/l/email-protection#a39a8ec2d5d08ecddac2c0cc8ec0ccd0e3c5c2c28dc4ccd5"><span class="__cf_email__" data-cfemail="e0d9cd819693cd8e9981838fcd838f93a0868181ce878f96">[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-2022-1480; Project Identifier
MCAI-2022-00548-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
[[Page 69226]]
following paragraph, and other information as described in 14 CFR
11.35, the FAA will post all comments received, without change, to
<a href="http://regulations.gov">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 Yaser
Osman, Aerospace Engineer, Airframe and Propulsion Section, FAA, New
York ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7300; email <a href="/cdn-cgi/l/email-protection#ad9480ccdbde80c3d4cccec280cec2deedcbcccc83cac2db"><span class="__cf_email__" data-cfemail="744d59150207591a0d15171b59171b07341215155a131b02">[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-2022-19, dated April 19,
2022 (TCCA AD CF-2022-19) (also referred to after this as the MCAI), to
correct an unsafe condition on certain Bombardier, Inc., Model BD-100-
1A10 airplanes. The MCAI states that cracks were found in the tailcone
upper firewall where the APU muffler electrical bonding strap is
attached. Crack initiation is related to the rigid electrical bonding
strap. A crack in this area, if not addressed, could result in a breach
of the firewall, which could allow a fire to propagate; reduced
lightning strike protection, which could affect the airplane's
grounding and potentially cause a fire; and increased radio
interference during flight, which could reduce the ability of the
flightcrew to maintain the safe flight and landing of the airplane.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2022-1480.
Related Service Information Under 1 CFR Part 51
The FAA reviewed Bombardier Service Bulletin 100-53-35, dated
December 6, 2021; and Service Bulletin 350-53-004, dated December 6,
2021. This service information specifies procedures for doing a
detailed visual inspection of the tailcone upper firewall for defects
including cracking, reworking the APU electrical bonding strap by
replacing it with a new flexible APU muffler jumper cable assembly, and
repairing the tailcone upper firewall. 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 this State of Design Authority,
it has notified the FAA of the unsafe condition described in the MCAI
and service information described above. The FAA is issuing this NPRM
after determining that 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 691 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............................. $36 $121 $83,611
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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 action. 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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24 work-hours x $85 per hour = $2,040. * $0 $2,040
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* The FAA has received no definitive data on which to base the cost
estimates for the parts specified in this proposed 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
[[Page 69227]]
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-2022-1480; Project Identifier MCAI-
2022-00548-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by January 3, 2023.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Bombardier, Inc., Model BD-100-1A10
airplanes, certificated in any category, serial numbers 20003
through 20500 inclusive and 20501 through 20916 inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 53, Fuselage.
(e) Unsafe Condition
This AD was prompted by reports of cracks found in the tailcone
upper firewall where the auxiliary power unit (APU) muffler
electrical bonding strap is attached. The FAA is issuing this AD to
address cracking in the tailcone upper firewall. The unsafe
condition, if not addressed, could result in a breach of the
firewall, which could allow a fire to propagate; reduced lightning
strike protection, which could affect the airplane's grounding and
potentially cause a fire; and increased radio interference during
flight, which could reduce the ability of the flightcrew to maintain
the safe flight and landing of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Inspection, Replacement, and Corrective Actions
Within 48 months after the effective date of this AD: Do a
detailed visual inspection of the tailcone upper firewall for
defects including cracking, rework the APU electrical bonding strap
by replacing with a new flexible APU muffler jumper cable assembly,
and repair the tail cone upper firewall, as applicable, in
accordance with paragraphs 2.B., 2.C., and 2.D., of the
Accomplishment Instructions of the applicable service information
specified in figure 1 to paragraph (g) of this AD. Do all applicable
repairs before further flight.
[GRAPHIC] [TIFF OMITTED] TP18NO22.707
(h) 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 New York ACO
Branch, mail it to ATTN: Program Manager, Continuing Operational
Safety, at the address identified in paragraph (i)(2) of this AD or
email to: <a href="/cdn-cgi/l/email-protection#f8c1d5998e8bd59681999b97d59b978bb89e9999d69f978e"><span class="__cf_email__" data-cfemail="c6ffeba7b0b5eba8bfa7a5a9eba5a9b586a0a7a7e8a1a9b0">[email protected]</span></a>. If mailing information, also
submit information by email. 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) Additional Information
(1) Refer to TCCA AD CF-2022-19, dated April 19, 2022, for
related information. This TCCA AD may be found in the AD docket at
<a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2022-1480.
(2) For more information about this AD, contact Yaser Osman,
Aerospace Engineer, Airframe and Propulsion Section, FAA, New York
ACO Branch, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
telephone 516-228-7300; email <a href="/cdn-cgi/l/email-protection#3e07135f484d1350475f5d51135d514d7e585f5f10595148"><span class="__cf_email__" data-cfemail="122b3f7364613f7c6b73717d3f717d61527473733c757d64">[email protected]</span></a>.
(3) For service information identified in this AD that is not
incorporated by reference, contact Bombardier Business Aircraft
Customer Response Center, 400 C[ocirc]te-Vertu Road West, Dorval,
Qu[eacute]bec H4S 1Y9, Canada; telephone 514-855-2999; email
<a href="/cdn-cgi/l/email-protection#0263612c7b776e426367706d2c3e63226a7067643f" http: bombardier.com">bombardier.com</a>">ac.yul@aero.<a href="http://bombardier.com">bombardier.com</a></a>; website <a href="http://bombardier.com">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.
(j) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) of the service information listed
in this
[[Page 69228]]
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) Bombardier Service Bulletin 100-53-35, dated December 6,
2021.
(ii) Bombardier Service Bulletin 350-53-004, dated December 6,
2021.
(3) For service information identified in this AD, contact
Bombardier Business Aircraft Customer Response Center, 400
C[ocirc]te-Vertu Road West, Dorval, Qu[eacute]bec H4S 1Y9, Canada;
telephone 514-855-2999; email <a href="/cdn-cgi/l/email-protection#1e7f7d30676b725e7f7b6c7130227f3e766c7b7823" http: bombardier.com">bombardier.com</a>">ac.yul@aero.<a href="http://bombardier.com">bombardier.com</a></a>; website
<a href="http://bombardier.com">bombardier.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#e88e9ac681869b988d8b9c818786a886899a89c68f879e"><span class="__cf_email__" data-cfemail="88eefaa6e1e6fbf8edebfce1e7e6c8e6e9fae9a6efe7fe">[email protected]</span></a>, or go to: <a href="http://www.archives.gov/federal-register/cfr/ibr-locations.html">www.archives.gov/federal-register/cfr/ibr-locations.html</a>.
Issued on November 10, 2022.
Christina Underwood,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2022-25113 Filed 11-17-22; 8:45 am]
BILLING CODE 4910-13-P
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