[Federal Register Volume 90, Number 92 (Wednesday, May 14, 2025)]
[Rules and Regulations]
[Pages 20375-20380]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-08338]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-2326; Project Identifier MCAI-2023-01048-T;
Amendment 39-23023; AD 2025-09-02]
RIN 2120-AA64
Airworthiness Directives; Airbus Canada Limited Partnership (Type
Certificate Previously Held by C Series Aircraft Limited Partnership
(CSALP); Bombardier, Inc.) Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2022-19-
09, which applied to all Airbus Canada Limited Partnership Model BD-
500-1A10 and BD-500-1A11 airplanes. AD 2022-19-09 required repetitive
inspections of the left and right main landing gear (MLG) lower spindle
pins to detect corrosion and applicable repair or replacement. This AD
was prompted by reports of in-service findings of
[[Page 20376]]
corrosion on the flange of the MLG lower spindle pin. This AD continues
to require certain actions in AD 2022-19-09. This AD also requires
changing the tracking of flight cycles for inspections from the usage
of the MLG to the usage of MLG lower spindle assemblies and replacement
of affected MLG lower spindle assemblies, removes airplanes from the
applicability, and prohibits the installation of affected parts under
certain conditions; as specified in a Transport Canada AD, which is
incorporated by reference. The FAA is issuing this AD to address the
unsafe condition on these products.
DATES: This AD is effective June 18, 2025.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of June 18,
2025.
ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2024-2326; 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:
For Transport Canada material identified in this AD,
contact Transport Canada, Transport Canada National Aircraft
Certification, 159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada;
telephone 888-663-3639; email [email protected]; website at tc.canada.ca/en/
aviation.
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 regulations.gov under
Docket No. FAA-2024-2326.
FOR FURTHER INFORMATION CONTACT: Fatin Saumik, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
phone: 516-228-7300; email: [email protected].
SUPPLEMENTARY INFORMATION:
Background
The FAA issued a notice of proposed rulemaking (NPRM) to amend 14
CFR part 39 to supersede AD 2022-19-09, Amendment 39-22178 (87 FR
57799, September 22, 2022) (AD 2022-19-09). AD 2022-19-09 applied to
all Airbus Canada Limited Partnership Model BD-500-1A10 and BD-500-1A11
airplanes. AD 2022-19-09 required repetitive inspections of the left
and right MLG lower spindle pins to detect corrosion and applicable
repair or replacement if necessary. The FAA issued AD 2022-19-09 to
address corrosion and subsequent cracking of the MLG lower spindle pin,
which could result in failure of the pin, and consequent collapse of
the MLG.
The NPRM published in the Federal Register on October 3, 2024 (89
FR 80427). The NPRM was prompted by AD CF-2023-66, dated October 3,
2023, issued by Transport Canada, which is the aviation authority for
Canada (Transport Canada AD CF-2023-66) (also referred to as the MCAI).
The MCAI states that the tracking of usage was changed from the MLG to
the MLG lower spindle assembly for inspections. The MCAI also states
that replacement of the MLG lower spindle assembly, part number (P/N)
4115A0500-01, 4115A0500-02, or 5965A0500-01 with P/N 4115A0500-03 on
Model BD-500-1A10 airplanes, or P/N 5965A0500-02 on Model BD-500-1A11
airplanes, constitutes a terminating action to the initial and
repetitive inspections. The MCAI also removed airplanes from the
applicability because Model BD-500-1A10 airplanes, serial numbers (S/
Ns) 50068 and subsequent, and Model BD-500-1A11 airplanes, S/Ns 55249
and subsequent, have a newly designed MLG lower spindle assembly
installed.
In the NPRM, the FAA proposed to continue to require certain
actions in AD 2022-19-09, as specified in Transport Canada AD CF-2021-
22R1, dated May 13, 2022 (Transport Canada AD CF-2021-22R1). The NPRM
also proposed to require changing the tracking of flight cycles for
inspections from the usage of the MLG to the usage of MLG lower spindle
assemblies, replacing affected MLG lower spindle assemblies, removing
airplanes from the applicability, and prohibiting the installation of
affected parts under certain conditions, as specified in Transport
Canada AD CF-2023-66. The FAA is issuing this AD to address the unsafe
condition on these products.
You may examine the MCAI in the AD docket at regulations.gov under
Docket No. FAA-2024-2326.
Discussion of Final Airworthiness Directive
Comments
The FAA received comments from Delta Air Lines (Delta). The
following presents the comments received on the NPRM and the FAA's
response to each comment.
Request To Correct a Part Number
Delta requested the FAA add a new exception to paragraph (h) of the
proposed AD to correct a typographical error in the third paragraph of
Part III of Transport Canada AD CF-2023-66. Delta stated that MLG lower
spindle assembly, part number (P/N) 415A0500-02 should be replaced with
P/N 4115A0500-02.
The FAA agrees and has added a new exception in paragraph (h)(6) of
this AD accordingly.
Request To Confirm Part Re-Identification Is Not Required and Previous
Alternative Methods of Compliance (AMOCs) Are Approved
Delta requested the FAA agree with Delta's interpretation that re-
identification of the MLG is not required for compliance (RC) with the
proposed AD. Delta noted that part III of Transport Canada AD CF-2023-
66 specifies replacing the MLG lower spindle assembly, P/Ns 4115A0500-
01, 4115A0500-02, and 5965A0500-01 (i.e., a pre-modification spindle),
with a new MLG lower spindle assembly, P/N 4115A0500-03 or 5965A0500-02
(i.e., a post-modification spindle), according to Airbus Canada Limited
Partnership Service Bulletin BD500-321006, Issue 001, dated July 31,
2023. Delta also noted the service bulletin contains procedures for
replacing pre-modification spindles with post-modification spindles and
re-identifying the MLG. Since the Transport Canada only specifies the
replacement, Delta interpreted this to mean re-identification of the
MLG is not RC. Delta stated it believes that re-identification of the
MLG may be required under 14 CFR 43.10, ``Disposition of life-limited
aircraft parts,'' but operators may deviate from the re-identification
procedures in the service bulletin without needing approval of an AMOC.
Delta also stated it previously received an AMOC to FAA AD 2022-19-09
that allowed Delta to accomplish Issue 001 of Airbus Canada Limited
Partnership Service Bulletin BD500-321006 as a terminating action and
re-identify the MLG using its own process standards in lieu of the
procedures in the service bulletin. Delta stated it believes that same
allowance should be offered in the proposed AD since the re-
identification is not part of the unsafe condition addressed by the
proposed AD.
The FAA partially agrees. The FAA agrees that AMOCs approved
previously
[[Page 20377]]
for FAA AD 2022-19-09 are approved as AMOCs for the corresponding
provisions of Transport Canada AD CF-2023-66 that are required by
paragraph (g) of this AD. In other words, the AMOC that allows Delta to
create the placards for re-identification is still valid. Note that in
paragraph (j)(1)(ii) of the proposed AD, the FAA inadvertently
referenced Transport Canada AD CF-2021-22R1 instead of Transport Canada
AD CF-2023-66. The FAA has revised paragraph (j)(1)(ii) of this AD
accordingly.
However, the FAA does not agree with Delta's interpretation that
re-identification of the MLG is not RC. Except as specified in
paragraph (h) of this AD, this AD adopts all the required actions
specified in Transport Canada AD CF-2023-66, which must be done
according to the Accomplishment Instructions of the service information
referenced in the Transport Canada AD. The Accomplishment Instructions
specify that the service information is classified as mandatory by an
AD, and that the Procedure section of the Accomplishment Instructions
is RC and must be done to comply with the AD. The Accomplishment
Instructions also specify the job set-up and close-up sections, except
for the return-to-service tests, are recommended. Therefore, all
procedures and tests identified as RC in the service information must
be done to comply with this AD, except as required by paragraph (j)(2)
of this AD. Further, the FAA reviewed Issue 001 of Airbus Canada
Limited Partnership Service Bulletin BD500-321006 and determined that
re-identification of the MLG is RC. Therefore, any substitutions or
changes to the re-identification procedures would require approval of
an AMOC. The FAA has not changed this AD in this regard. However, for
clarity, the FAA has added paragraph (j)(3) to this AD, which explains
the requirements for RC service information.
Request To Confirm Vendor Service Information Is Not Required
Delta requested the FAA agree with Delta's interpretation that
certain vendor service information is not required to be done
concurrently (i.e., concurrent service information) with the Airbus
Canada Limited Partnership (ACLP) service information referenced in
Transport Canada AD CF-2023-66, in order to show compliance with the
proposed AD. Delta's interpretation is that, although the concurrent
service information is necessary to complete the actions in the ACLP
service information, the concurrent service information is not required
by the proposed AD. Delta therefore concluded that operators may
deviate from the actions specified in the concurrent service
information without needing an AMOC for compliance with the proposed
AD. Delta notes that the concurrent service information simply changes
the serving placard on the MLG and does not address the unsafe
condition.
The FAA does not agree with Delta's interpretation. As discussed in
the previous comment, all procedures and tests identified as RC in the
ACLP service information must be done to comply with this AD, except as
required by paragraph (j)(2) of this AD. Further, the FAA reviewed the
ACLP service information and determined that accomplishment of the
concurrent service information is RC. Any substitutions or changes to
procedures or tests identified as RC require approval of an AMOC. The
FAA has not changed this AD in this regard.
Request To Expand Applicability To Prohibit Parts Installation on All
Airplanes
Delta requested the FAA prohibit installation of the MLG lower
spindle assembly, P/Ns 4115A0500-01, 4115A0500-02, or 5965A0500-01
(i.e., a pre-modification spindle) on all Model BD-500-1A10 and BD-500-
1A11 airplanes. To accomplish this, Delta requested the FAA expand the
applicability in paragraph (c) of the proposed AD to all airplane
serial numbers, and then revise paragraph (g) of the proposed AD to
limit accomplishment of the provisions of Transport Canada AD CF-2023-
66 to airplanes delivered with a pre-modification spindle and prohibit
installation of a pre-modification spindle either on airplanes not
identified in Transport Canada AD CF-2023-66, or airplanes not equipped
with a pre-modification spindle as of the effective date of this AD. As
justification, Delta stated the proposed AD would only be applicable to
airplanes delivered with a pre-modification spindle; therefore, the
proposed requirement prohibiting installation of a pre-modification
spindle would be limited to only those airplanes. Delta further stated
it believes that airplanes delivered with a post-modification spindle
should be subject to the same regulatory restrictions as those modified
in service.
The FAA acknowledges that there is a possibility that the pre-
modification spindles are rotable parts that could later be installed
on airplanes delivered with an acceptable MLG lower spindle assembly,
P/N 4115A0500-03 or 5965A0500-02 (i.e., a post-modification spindle).
However, the FAA does not agree with adding airplanes delivered with
post-modification spindles to the applicability of this AD. Revising
this AD as requested would necessitate (under the provisions of the
Administrative Procedure Act) reissuing the notice, reopening the
period for public comment, and eventually issuing a final rule. That
process would delay the issuance of the final rule for the airplanes
identified in this AD. The FAA has determined that further delay by
revising this AD would be inappropriate since the FAA has determined
that an unsafe condition exists, and that inspections and replacements
must be conducted to ensure continued safety for the airplanes
identified in this AD. However, the FAA may consider additional
rulemaking to address airplanes not identified in this AD on which a
pre-modification spindle might be installed. The FAA has not changed
this AD in this regard.
Request To Use Spindle Assembly Utilization or MLG Utilization for
Compliance Times
Delta requested the FAA allow the compliance times to be tracked
based on either MLG utilization, or lower spindle assembly utilization.
Delta recognized that using spindle assembly utilization would more
accurately track the unsafe condition of corrosion on the spindle.
During the comment period for FAA AD 2022-19-09, Delta stated it
requested that the compliance times be based on MLG lower spindle
assembly utilization instead of MLG utilization. Delta noted the FAA
denied that request. In the preamble to AD 2022-19-09, the FAA stated
that, although the MLG lower spindle pin is the affected part,
operators are not required to track the MLG and spindle pin times
separately. The FAA also stated it concurred with the provision in
Transport Canada AD CF-2021-22R1 to track time on the MLG as the only
metric relating to the spindle pin and determined that using compliance
times based on the MLG utilization provides an acceptable level of
safety. Given that the FAA had previously determined tracking the
unsafe condition by MLG utilization provides an acceptable level of
safety, Delta stated it would like the superseding AD to continue to
allow this.
The FAA does not agree with allowing the compliance time to be
tracked by MLG utilization because Transport Canada has determined that
tracking compliance based on MLG utilization no longer provides an
acceptable level of safety to address the unsafe condition, and the FAA
concurs
[[Page 20378]]
with that assessment. New information indicates that spindle
utilization may be different than MLG utilization because the spindle
might be replaced by a spindle that has accumulated more flight cycles
than the one it replaced. If the spindle assembly has a higher
utilization than the MLG, and the AD allows operators to track
compliance based on the MLG utilization, then operators may not address
the unsafe condition prior to resultant failure. Since the unsafe
condition is corrosion on the spindle, the compliance time on the
spindle assembly must be tracked and its utilization used to address
the unsafe condition. During promulgation of AD 2022-19-09, it was
determined that operators were not required to track the MLG and
spindle pin times separately and therefore the AD required tracking the
time on the MLG as the only metric relating to the spindle pin.
However, now the FAA has determined that lower spindle assemblies must
be tracked instead of the MLG because tracking the lower spindle
assemblies ensures the repetitive inspections address the unsafe
condition. Tracking the MLG could inadvertently allow the unsafe
condition to exist on a spindle that does not get inspected within the
specified compliance time.
Since the initial inspections are on the low spindle assemblies,
the repetitive interval specified in Part II of Transport Canada AD CF-
2023-66, is also intended to be time on the lower spindle assemblies.
For clarity, the FAA has added paragraph (h)(4) to this AD to specify
the repetitive inspections are on the lower spindle assembly, i.e., at
intervals not to exceed 3,000 flight cycles or 24 months on the lower
spindle assembly.
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, considered the
comments received, 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, and any other changes described previously, 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
Transport Canada AD CF-2023-66 specifies procedures for repetitive
inspections (including general visual, detailed, and liquid penetrant
inspections) of the left and right MLG lower spindle assembly, P/N
4115A0500-01, 4115A0500-02, or 5965A0500-01, for corrosion, and
applicable repair or replacement of the MLG lower spindle assembly with
the same part number.
Transport Canada AD CF-2023-66 also specifies procedures to replace
MLG lower spindle assemblies, P/Ns 4115A0500-01, 4115A0500-02, and
5965A0500-01, with P/N 4115A0500-03 (for Model BD-500-1A10 airplanes)
or P/N 5965A0500-02 (for Model BD-500-1A11 airplanes), which
constitutes a terminating action to the initial and repetitive
inspections. Transport Canada AD CF-2023-66 also prohibits the
installation of MLG lower spindle assembly, P/N 4115A0500-01, 415A0500-
02, or 5965A0500-01, on any airplane once an airplane has installed P/N
4115A0500-03 or 5965A0500-02, as applicable. 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 98 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Cost on U.S.
Action Labor cost Parts cost Cost per product operators
----------------------------------------------------------------------------------------------------------------
Retained actions from AD 2022- Up to 25 work- $0.................... Up to $2,125.......... Up to $208,250,
19-09. hours x $85 per per inspection
hour = $2,125. cycle.
New replacement.............. Up to 26 work- Up to $37,077......... Up to $39,287......... Up to
hours x $85 per $3,850,126.
hour = $2,210.
----------------------------------------------------------------------------------------------------------------
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
------------------------------------------------------------------------
Labor cost Parts cost Cost per product
------------------------------------------------------------------------
Up to 4 work-hours x $85 per Up to $37,077..... Up to $37,417.
hour = $340.
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According to the manufacturer, some or all of the costs of this AD
may be covered under warranty, thereby reducing the cost impact on
affected individuals. The FAA does not control warranty coverage for
affected individuals. As a result, the FAA has included all known costs
in the cost estimate.
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
[[Page 20379]]
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.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by:
0
a. Removing Airworthiness Directive (AD) 2022-19-09, Amendment 39-22178
(87 FR 57799, September 22, 2022); and
0
b. Adding the following new AD:
2025-09-02 Airbus Canada Limited Partnership (Type Certificate
Previously Held by C Series Aircraft Limited Partnership (CSALP);
Bombardier, Inc.): Amendment 39-23023; Docket No. FAA-2024-2326;
Project Identifier MCAI-2023-01048-T.
(a) Effective Date
This airworthiness directive (AD) is effective June 18, 2025.
(b) Affected ADs
This AD replaces AD 2022-19-09, Amendment 39-22178 (87 FR 57799,
September 22, 2022) (AD 2022-19-09).
(c) Applicability
This AD applies to Airbus Canada Limited Partnership (type
certificate previously held by C Series Aircraft Limited Partnership
(CSALP); Bombardier, Inc.) Model BD-500-1A10 and BD-500-1A11
airplanes, certificated in any category, as identified in Transport
Canada AD CF-2023-66, dated October 3, 2023 (Transport Canada AD CF-
2023-66).
(d) Subject
Air Transport Association (ATA) of America Code 32, Landing
Gear.
(e) Unsafe Condition
This AD was prompted by reports of in-service findings of
corrosion on the flange of the main landing gear (MLG) lower spindle
pin. The FAA is issuing this AD to address corrosion and subsequent
cracking of the MLG lower spindle pin. The unsafe condition, if not
addressed, could result in failure of the pin, and consequent
collapse of the MLG.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Requirements
Except as specified in paragraph (h) of this AD: Comply with all
required actions and compliance times specified in, and in
accordance with, Transport Canada AD CF-2023-66.
(h) Exceptions To Transport Canada AD CF-2023-66
(1) Where Transport Canada AD CF-2023-66 refers to May 20, 2021,
the effective date of Transport Canada AD CF-2021-18, this AD
requires using October 27, 2022 (the effective date of AD 2022-19-
09).
(2) Where Transport Canada AD CF-2023-66 refers to its effective
date, this AD requires using the effective date of this AD.
(3) Where Part I of Transport Canada AD CF-2023-66 specifies
``Initial inspections carried out,'' this AD requires replacing that
text with ``Initial inspections and applicable repairs and
replacements carried out.''
(4) Where Part II of Transport Canada AD CF-2023-66 specifies
``at intervals not to exceed 3000 FC or 24 months,'' this AD
requires replacing that text with ``at intervals not to exceed 3000
FC or 24 months on the lower spindle assembly.''
(5) Where Part II of Transport Canada AD CF-2023-66 specifies
``Repetitive inspections carried out,'' this AD requires replacing
that text with ``Repetitive inspections and applicable repairs and
replacements carried out.''
(6) Where Part III of Transport Canada AD CF-2023-66 specifies a
compliance time for the terminating action, for this AD, the
compliance time is within the time specified in Part III of
Transport Canada AD CF-2023-66, or within 60 days after the
effective date of this AD, whichever occurs later.
(7) Where Part III of Transport Canada AD CF-2023-66 specifies
part number (P/N) ``415A0500-02,'' this AD requires replacing that
text with P/N ``4115A0500-02.''
(i) No Reporting or Return of Parts Requirement
Although the material referenced in Transport Canada AD CF-2023-
66 specifies to submit certain information and send removed parts to
the manufacturer, this AD does not include that requirement.
(j) Additional AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, AIR-
520, Continued Operational Safety 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
AIR-520, Continued Operational Safety Branch, send it to the
attention of the person identified in paragraph (k) of this AD and
email to: [email protected].
(i) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(ii) AMOCs approved previously for AD 2022-19-09 are approved as
AMOCs for the corresponding provisions of Transport Canada AD CF-
2023-66 that are required by paragraph (g) of this AD.
(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, AIR-520,
Continued Operational Safety Branch, FAA; or Transport Canada; or
Airbus Canada Limited Partnership's Transport Canada Design Approval
Organization (DAO). If approved by the DAO, the approval must
include the DAO-authorized signature.
(3) Required for Compliance (RC): Except as required by
paragraph (j)(2) of this AD, if any material contains procedures or
tests that are identified as RC, those procedures and tests must be
done to comply with this AD; any procedures or tests that are not
identified as RC are recommended. Those procedures and tests that
are not identified as RC may be deviated from using accepted methods
in accordance with the operator's maintenance or inspection program
without obtaining approval of an AMOC, provided the procedures and
tests identified as RC can be done and the airplane can be put back
in an airworthy condition. Any substitutions or changes to
procedures or tests identified as RC require approval of an AMOC.
(k) Additional Information
For more information about this AD, contact Fatin Saumik,
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; phone: 516-228-7300; email: [email protected].
[[Page 20380]]
(l) 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) Transport Canada AD CF-2023-66, dated October 3, 2023.
(ii) [Reserved]
(3) For Transport Canada material identified in this AD, contact
Transport Canada, Transport Canada National Aircraft Certification,
159 Cleopatra Drive, Nepean, Ontario K1A 0N5, Canada; telephone 888-
663-3639; email [email protected]; website at tc.canada.ca/en/
aviation.
(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 Administration (NARA). For information on the availability
of this material at NARA, visit www.archives.gov/federal-register/cfr/ibr-locations, or email [email protected].
Issued on April 22, 2025.
Peter A. White,
Deputy Director, Integrated Certificate Management Division, Aircraft
Certification Service.
[FR Doc. 2025-08338 Filed 5-13-25; 8:45 am]
BILLING CODE 4910-13-P