Rule2024-28125
Airworthiness Directives; 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 2, 2024
Effective
January 6, 2025
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. This AD was prompted by reports of missing or damaged inboard flap seal plate assemblies. This AD requires repetitive inspections for cracks of the attaching angles of the inboard flap seal plates and replacement. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 89 Issue 231 (Monday, December 2, 2024)</title>
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[Federal Register Volume 89, Number 231 (Monday, December 2, 2024)]
[Rules and Regulations]
[Pages 95095-95098]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2024-28125]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-2015; Project Identifier MCAI-2023-00769-T;
Amendment 39-22887; AD 2024-23-08]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc., Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Bombardier, Inc., Model BD-700-1A10 and BD-700-1A11 airplanes.
This AD was prompted by reports of missing or damaged inboard flap seal
plate assemblies. This AD requires repetitive inspections for cracks of
the attaching angles of the inboard flap seal plates and replacement.
The FAA is issuing this AD to address the unsafe condition on these
products.
DATES: This AD is effective January 6, 2025.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of January 6,
2025.
ADDRESSES:
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2024-2015; 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 final rule, the mandatory continuing airworthiness
information (MCAI), any comments received, and other information. The
address for Docket Operations is U.S. Department of Transportation,
Docket Operations, M-30, West Building Ground Floor, Room W12-140, 1200
New Jersey Avenue SE, Washington, DC 20590.
Material Incorporated by Reference:
<bullet> For Bombardier material 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#f59496db8c8099b59490879adbc994d59d879093c8" 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 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 at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2024-2015.
FOR FURTHER INFORMATION CONTACT: Yaser Osman, Aviation Safety Engineer,
FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-
228-7300; email <a href="/cdn-cgi/l/email-protection#774e5a1601045a190e1614185a1418043711161659101801"><span class="__cf_email__" data-cfemail="241d09455257094a5d45474b09474b57644245450a434b52">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 by adding an AD that would apply to certain Bombardier,
Inc., Model BD-700-1A10 and BD-700-1A11 airplanes. The NPRM published
in the
[[Page 95096]]
Federal Register on August 9, 2024 (89 FR 65264). The NPRM was prompted
by AD CF-2023-42, dated June 19, 2023, issued by Transport Canada,
which is the aviation authority for Canada (referred to after this as
the MCAI). The MCAI states that there have been multiple reports in
service of missing or damaged inboard flap seal plates. An
investigation revealed a premature fatigue failure mode of the inboard
flap seal plates. Left uncorrected, an inboard flap seal plate may
partially or totally detach. Under certain flight conditions, a missing
inboard flap seal plate could lead to excessive buffeting and
vibration, and consequent damage to the airplane.
In the NPRM, the FAA proposed to require repetitive inspections for
cracks of the attaching angles of the inboard flap seal plates and
replacement. The FAA is issuing this AD to address the unsafe condition
on these products.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2024-2015.
Discussion of Final Airworthiness Directive
Comments
The FAA received no comments on the NPRM or on the determination of
the cost to the public.
Conclusion
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
referenced above. The FAA reviewed the relevant data and determined
that air safety requires adopting this AD as proposed. Accordingly, the
FAA is issuing this AD to address the unsafe condition on this product.
Except for minor editorial changes, this AD is adopted as proposed in
the NPRM. None of the changes will increase the economic burden on any
operator.
Material Incorporated by Reference Under 1 CFR Part 51
The FAA reviewed Bombardier Service Bulletins 700-27-5509 and 700-
27-6509, both Revision 01, both dated May 5, 2023. This material
specifies procedures for repetitive detailed inspections for cracks of
the attaching angles of the inboard flap seal plates and replacing the
inboard flap seal plates if any crack is detected. This material also
specifies procedures for replacing both existing inboard flap seal
plates with structurally more robust redesigned components. The
replacement actions include a detailed visual inspection for damage
(including signs of failure, cracking, and deformation) of the flap
inboard closing ribs and trailing edges, an eddy current or liquid
penetrant inspection for cracks running out of the flap inboard closing
rib holes common to the outboard stiffener and angle, and repair for
cracks and other damage. The replacement would eliminate the need for
the repetitive detailed inspections. These documents are distinct since
they apply to different airplane models.
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.
Costs of Compliance
The FAA estimates that this AD affects 43 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this 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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24 work-hours x $85 per hour = $2,040........................ $37,919 $39,959 $1,718,237
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The FAA has received no definitive data on which to base the cost
estimates for the repairs specified in this 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 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
This AD will not have federalism implications under Executive Order
13132. This AD will 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 that this AD:
(1) Is not a ``significant regulatory action'' under Executive
Order 12866,
(2) Will not affect intrastate aviation in Alaska, and
(3) Will 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 Amendment
Accordingly, under the authority delegated to me by the
Administrator, the FAA amends 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.
[[Page 95097]]
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:
2024-23-08 Bombardier, Inc.: Amendment 39-22887; Docket No. FAA-
2024-2015; Project Identifier MCAI-2023-00769-T.
(a) Effective Date
This airworthiness directive (AD) is effective January 6, 2025.
(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
9861, 9872, 60001 through 60004 inclusive, 60006 through 60023
inclusive, 60025 through 60029 inclusive, 60031, 60033 through 60036
inclusive, 60038 through 60042 inclusive, 60044, 60046 through 60048
inclusive, 60050 through 60055 inclusive, 60058 through 60060
inclusive, 60062 through 60067 inclusive, 60069 through 60071
inclusive, 60073 through 60086 inclusive, and 60088 through 60101
inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 57, Wings.
(e) Unsafe Condition
This AD was prompted by reports of missing or damaged inboard
flap seal plates. The FAA is issuing this AD to address the unsafe
condition, which could result in the partial or total detachment of
the flap seal plate. Under certain flight conditions, a missing
inboard flap seal plate could lead to excessive buffeting and
vibration, and consequent damage to the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Detailed Inspection
At the applicable time specified in figure 1 to paragraph (g) of
this AD, perform a detailed inspection for cracks of the attaching
angles of the inboard flap seal plates, in accordance with Section
2.B. (Part A) of the Accomplishment Instructions of Bombardier
Service Bulletin 700-27-5509 or 700-27-6509, both Revision 01, both
dated May 5, 2023, as applicable, except do corrective actions as
specified in paragraph (h) of this AD.
Figure 1 to Paragraph (g)--Compliance Requirements
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Total flight hours as of the effective Compliance time after the
date of this AD effective date of this AD
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Less than or equal to 750.............. Within 250 flight hours.
More than 750.......................... Within 100 flight hours.
------------------------------------------------------------------------
(h) Corrective Actions for Inboard Flap Seal Plates
(1) If no crack is found during any inspection required by
paragraph (g) of this AD, repeat the inspection thereafter at
intervals not to exceed 250 flight hours, except as specified in
paragraph (i) of this AD.
(2) If any crack is found during any inspection required by
paragraph (g) of this AD, do the actions specified in paragraph (i)
of this AD before further flight.
(i) Replacement of Inboard Flap Seal Plates
Unless already done as specified in paragraph (h)(2) of this AD:
Within 12 months after the effective date of this AD, do the actions
specified in paragraphs (i)(1) through (3) of this AD, in accordance
with Section 2.C. (Part B) of the Accomplishment Instructions of
Bombardier Service Bulletin 700-27-5509 or 700-27-6509, both
Revision 01, both dated May 5, 2023, as applicable.
(1) Replace the inboard flap seal plates with redesigned plates.
(2) Do a detailed visual inspection for damage of the flap
inboard closing ribs and trailing edges.
(3) Do an eddy current or liquid penetrant inspection for cracks
running out of the flap inboard closing rib holes common to the
outboard stiffener and angle.
(j) Repair for Flap Inboard Closing Ribs and Trailing Edges
If any crack or other damage is found during any inspection
required by paragraph (i)(2) or (3) of this AD, repair before
further flight using a method approved by the Manager, International
Validation Branch, FAA; or Transport Canada; or Bombardier, Inc.'s
Transport Canada Design Approval Organization (DAO). If the method
is approved by the DAO, the approval must include the DAO-authorized
signature.
(k) Terminating Action for Repetitive Inspections
Accomplishment of the actions required by paragraph (i) of this
AD terminates the requirements of paragraph (h)(1) of this AD.
(l) Credit for Previous Actions
This paragraph provides credit for actions required by this AD,
if those actions were performed before the effective date of this AD
using Bombardier Service Bulletin 700-27-5509 or 700-27-6509, both
dated October 4, 2022.
(m) No Reporting Requirement
Although Bombardier Service Bulletins 700-27-5509 and 700-27-
6509, both Revision 01, both dated May 5, 2023, specify to submit
certain information to the manufacturer, this AD does not include
that requirement.
(n) Additional AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager,
International Validation 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
International Validation Branch, mail it to the address identified
in paragraph (o)(1) of this AD. Information may be emailed to:
<a href="/cdn-cgi/l/email-protection#6524282a26250304044b020a13"><span class="__cf_email__" data-cfemail="c98884868a89afa8a8e7aea6bf">[email protected]</span></a>. 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, International
Validation Branch, FAA; or Transport Canada; or Bombardier, Inc.'s
Transport Canada Design Approval Organization (DAO). If approved by
the DAO, the approval must include the DAO-authorized signature.
(o) Additional Information
(1) For more information about this AD, contact Yaser Osman,
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516-228-7300; email <a href="/cdn-cgi/l/email-protection#c2fbefa3b4b1efacbba3a1adefa1adb182a4a3a3eca5adb4"><span class="__cf_email__" data-cfemail="71485c1007025c1f0810121e5c121e02311710105f161e07">[email protected]</span></a>.
(2) Material identified in this AD that is not incorporated by
reference is available at the address specified in paragraph (p)(3)
of this AD.
(p) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference of the material listed in this paragraph
under 5 U.S.C. 552(a) and 1 CFR part 51.
(2) You must use this material as applicable to do the actions
required by this AD, unless this AD specifies otherwise.
(i) Bombardier Service Bulletin 700-27-5509, Revision 01, dated
May 5, 2023.
(ii) Bombardier Service Bulletin 700-27-6509, Revision 01, dated
May 5, 2023.
(3) For Bombardier material 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#1a7b7934636f765a7b7f687534267b3a72687f7c27" 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 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.
(5) You may view this material at the National Archives and
Records
[[Page 95098]]
Administration (NARA). For information on the availability of this
material at NARA, visit <a href="http://www.archives.gov/federal-register/cfr/ibr-locations">www.archives.gov/federal-register/cfr/ibr-locations</a> or email <a href="/cdn-cgi/l/email-protection#0e687c2067607d7e6b6d7a6761604e606f7c6f20696178"><span class="__cf_email__" data-cfemail="fd9b8fd394938e8d989e89949293bd939c8f9cd39a928b">[email protected]</span></a>.
Issued on November 12, 2024.
Victor Wicklund,
Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2024-28125 Filed 11-29-24; 8:45 am]
BILLING CODE 4910-13-P
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