Proposed Rule2025-06062
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
April 11, 2025
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for all Bombardier, Inc., Model CL-600-1A11 (600) and CL-600-2A12 (601) airplanes, and certain Model CL-600-2B16 (601-3A, 601-3R, and 604 Variants) airplanes. This proposed AD was prompted by a determination that new or more restrictive airworthiness limitations are necessary. This proposed AD would require revising the existing maintenance or inspection program, as applicable, to incorporate new or more restrictive airworthiness limitations. The FAA is proposing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 90 Issue 69 (Friday, April 11, 2025)</title>
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[Federal Register Volume 90, Number 69 (Friday, April 11, 2025)]
[Proposed Rules]
[Pages 15419-15426]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-06062]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2025-0616; Project Identifier MCAI-2024-00304-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 all Bombardier, Inc., Model CL-600-1A11 (600) and CL-600-2A12 (601)
airplanes, and certain Model CL-600-2B16 (601-3A, 601-3R, and 604
Variants) airplanes. This proposed AD was prompted by a determination
that new or more restrictive airworthiness limitations are necessary.
This proposed AD would require revising the existing maintenance or
inspection program, as applicable, to incorporate new or more
restrictive airworthiness limitations. 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 May 27,
2025.
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-2025-0616; 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 Bombardier material identified in this proposed 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#93f2f0bdeae6ffd3f2f6e1fcbdaff2b3fbe1f6f5ae" 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.
FOR FURTHER INFORMATION CONTACT: Brenda L. Buitrago, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
phone: 516-228-7300; email: <a href="/cdn-cgi/l/email-protection#1e27337f686d3370677f7d71337d716d5e787f7f30797168"><span class="__cf_email__" data-cfemail="5b62763a2d287635223a3834763834281b3d3a3a753c342d">[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 the ADDRESSES section. Include ``Docket No. FAA-2025-0616;
Project Identifier MCAI-2024-00304-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="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
Brenda L. Buitrago, Aviation Safety Engineer, FAA, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; phone: 516-228-7300; email: <a href="/cdn-cgi/l/email-protection#e8d1c5899e9bc58691898b87c58b879ba88e8989c68f879e"><span class="__cf_email__" data-cfemail="bb8296dacdc896d5c2dad8d496d8d4c8fbdddada95dcd4cd">[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, which is the aviation authority for Canada, has
issued Transport Canada AD CF-2024-16, dated May 23, 2024 (Transport
Canada AD CF-2024-16) (also referred to after this as the MCAI), to
correct an unsafe condition for all Bombardier, Inc., Model CL-600-1A11
(600), CL-600-2A12 (601), and CL-600-2B16 (601-3A, 601-3R, and 604
Variants) airplanes. The MCAI states that new or more restrictive
airworthiness limitations have been developed.
Model CL-600-2B16 (604 Variant) airplanes having serial numbers
6193 and subsequent must comply with the airworthiness limitations
specified as part of the approved type design. Therefore, this proposed
AD does not include those airplanes in the applicability.
[[Page 15420]]
The FAA is proposing this AD to address new and more restrictive
limitations. The new and more restrictive limitations include tasks and
limitations for which a threshold or repeat interval was reduced, an
inspection method was changed, or a discard time was reduced. Failure
to comply with these new and more restrictive limitations and
inspection thresholds and intervals could adversely affect the
continued airworthiness 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-2025-0616.
Material Incorporated by Reference Under 1 CFR Part 51
The FAA reviewed the following Bombardier material:
<bullet> Section 5-10-00, ``Airworthiness Limitations,'' Section 5-
20-00, ``Scheduled Maintenance Instructions,'' Section 5-30-20,
``Corrosion Prevention and Controlled Program (CPCP),'' and Section 5-
70-00, ``Custom Installations,'' of Bombardier Challenger 600 Time
Limits/Maintenance Checks (TLMC), Publication No. PSP 605, Revision 39,
dated January 8, 2018. (For obtaining these sections of Bombardier
Challenger 600 TLMC, Publication No. PSP 605, use Document
Identification No. CH 600 TLMC.)
<bullet> Section 5-10-00, ``Airworthiness Limitations,'' Section 5-
20-00, ``Scheduled Maintenance Instructions,'' Section 5-30-20,
``Corrosion Prevention and Controlled Program (CPCP),'' and Section 5-
70-00, ``Custom Installations,'' of Bombardier Challenger 601 TLMC,
Publication No. PSP 601-5, Revision 46, dated January 8, 2018. (For
obtaining these sections of Bombardier Challenger 601 TLMC, Publication
No. PSP 601-5, use Document Identification No. CH 601 TLMC.)
<bullet> Section 5-10-00, ``Airworthiness Limitations,'' Section 5-
20-00, ``Scheduled Maintenance Instructions,'' Section 5-30-20,
``Corrosion Prevention and Controlled Program (CPCP),'' and Section 5-
70-00, ``Custom Installations,'' of Bombardier Challenger 601 TLMC,
Publication No. PSP 601A-5, Revision 42, dated January 8, 2018. (For
obtaining these sections of Bombardier Challenger 601 TLMC, Publication
No. PSP 601A-5, use Document Identification No. CH 601 TLMC-1.)
<bullet> Part 2, ``Airworthiness Limitations,'' of Bombardier
Challenger 604 TLMC, Publication No. CH 604 TLMC, Revision 33, dated
November 22, 2022. (The document identification number for ordering
Bombardier Challenger 604 TLMC, Publication No. CH 604 TLMC is
incorrectly identified as ``CH 600 TLMC'' on page 2 of the TLMC. For
obtaining Part 2 of Bombardier Challenger 604 TLMC, Publication No. CH
604 TLMC, use Document Identification No. CH 604 TLMC.)
<bullet> Part 2, ``Airworthiness Limitations,'' of Bombardier
Challenger 605 TLMC, Publication No. CH 605 TLMC, Revision 22, dated
November 22, 2022.
<bullet> Part 2, ``Airworthiness Limitations,'' of Bombardier
Challenger 650 TLMC, Publication No. CH 650 TLMC, Revision 9, dated
November 22, 2022.
This material specifies new or more restrictive airworthiness
limitations for certain certification maintenance requirements for
airplane structures and safe life limits. These documents are distinct
since they apply to different airplane configurations.
The FAA also reviewed the following Bombardier material:
<bullet> Temporary Revision No. 5-2-5, dated October 16, 2023,
which includes new Task 32-51-04-101 *, ``Discard of the Nosewheel-
Steering Control Potentiometer Coupling Setscrews, Part No. B0201102-2-
220 (A/C 6194 and Subs or Post SB 650-32-007).''
<bullet> Temporary Revision No. 5-2-29, dated October 25, 2023,
which includes new Task 32-51-04-101 *, ``Discard of the Nosewheel-
Steering Control Potentiometer Coupling Setscrews, Part No. B0201102-2-
220 (Post SB 605-32-010).''
<bullet> Temporary Revision No. 5-2-73, dated October 25, 2023,
which includes new Task 32-51-04-101 *, ``Discard of the Nosewheel-
Steering Control Potentiometer Coupling Setscrews, Part No. B0201102-2-
220 (Post SB 604-32-033).''
<bullet> Temporary Revision No. TR 5-164, dated December 23, 2022,
which includes new Task 53-10-01-102 *, ``Forward Pressure Bulkhead Cap
Angle--Aft Side.''
<bullet> Temporary Revision No. TR 5-165, dated October 25, 2023.
<bullet> Temporary Revision No. TR 5-268, dated December 23, 2022,
which includes new Task 53-10-01-103 *, ``Forward Pressure Bulkhead Cap
Angle--Aft Side.''
<bullet> Temporary Revision No. TR 5-269, dated October 25, 2023.
<bullet> Temporary Revision No. TR 5-282, dated December 23, 2022,
which includes new Task 53-10-01-103 *, ``Forward Pressure Bulkhead Cap
Angle--Aft Side.''
<bullet> Temporary Revision No. TR 5-283, dated October 25, 2023.
(The asterisk (or ``one star'') with the last three digits of the
task numbers listed above indicates that the task is an airworthiness
limitation task.).
Temporary Revision No. 5-2-5, 5-2-29, 5-2-73, TR 5-165, TR 5-269,
and TR 5-283 introduce a life limit for potentiometer coupling
setscrews, P/N B0201102-2-220, for the nosewheel-steering control or
rudder pedal, as applicable. Temporary Revision Nos. TR 5-164, TR 5-
268, and TR 5-282 introduce a visual check of the forward pressure
bulkhead cap angle on the aft side. These documents are distinct since
they apply to different airplane configurations.
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.
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, the
FAA has been notified of the unsafe condition described in the MCAI and
material 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 new or more
restrictive airworthiness limitations.
This proposed AD would require revisions to certain operator
maintenance documents to include new actions (e.g., inspections).
Compliance with these actions is required by 14 CFR 91.403(c). For
airplanes that have been previously modified, altered, or repaired in
the areas addressed by this proposed AD, the operator may not be able
to accomplish the actions described in the revisions. In this
situation, to comply with 14 CFR 91.403(c), the operator must request
approval for an alternative method of compliance according to paragraph
(j)(1) of this proposed AD.
Explanation of Initial Compliance Time for a Certain Task
Note 2 of Transport Canada AD CF-2024-16 provides an initial
compliance time (``phase-in'') for task 27-42-01-110, ``Special
Detailed Inspection of the Horizontal Stabilizer Trim Actuator (HSTA),
P/N 604-92305-7 and Subs (Vendor P/N 8454-3 and Subs),'' of
[[Page 15421]]
section 5-10-40, ``Certification Maintenance Requirements,'' of Part 2,
``Airworthiness Limitations,'' of Bombardier Challenger 604 TLMC, CH
604; or Bombardier Challenger 605 TLMC, CH 605; as applicable. The
compliance language in Note 2 includes a reference to Transport Canada
AD CF-2013-18, dated July 16, 2023 (Transport Canada AD CF-2013-18).
Transport Canada AD CF-2013-18 corresponds to FAA AD 2015-05-07,
Amendment 39-18117 (80 FR 13483, March 16, 2015) (AD 2015-05-07). The
FAA has included the initial compliance for the task, including
reference to AD 2015-05-07, in paragraph (h) of this proposed AD.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 427 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-2025-0616; Project Identifier MCAI-
2024-00304-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by May 27, 2025.
(b) Affected ADs
None.
(c) Applicability
This AD applies to the Bombardier, Inc., airplanes identified in
paragraphs (c)(1) and (2) of this AD, certificated in any category.
(1) All Model CL-600-1A11 (600), CL-600-2A12 (601), and CL-600-
2B16 (601-3A and 601-3R Variants) airplanes.
(2) Model CL-600-2B16 (604 Variant) serial numbers 6050 through
6192 inclusive.
(d) Subject
Air Transport Association (ATA) of America Code 05, Time Limits/
Maintenance Checks.
(e) Unsafe Condition
This AD was prompted by a determination that new or more
restrictive airworthiness limitations are necessary. The FAA is
issuing this AD to address new and more restrictive limitations.
Failure to comply with these new and more restrictive limitations
could adversely affect the continued airworthiness of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Maintenance or Inspection Program Revision
(1) Within 90 days after the effective date of this AD, revise
the existing maintenance or inspection program, as applicable, to
incorporate the information specified in the applicable time limits/
maintenance checks (TLMC) document identified in table 1 to
paragraph (g)(1) of this AD. The initial compliance time for doing
the tasks is at the time specified in the applicable TLMC document
identified in table 1 to paragraph (g)(1) of this AD, or within 90
days after the effective date of this AD, whichever occurs later,
except as provided by paragraph (h) of this AD.
BILLING CODE 4910-13-P
Table 1 to Paragraph (g)(1)--TLMC Documents
[[Page 15422]]
[GRAPHIC] [TIFF OMITTED] TP11AP25.000
[[Page 15423]]
[GRAPHIC] [TIFF OMITTED] TP11AP25.001
(2) Within 90 days after the effective date of this AD, revise
the existing maintenance or inspection program, as applicable, to
incorporate the information specified in the applicable temporary
revisions (TRs) identified in table 2 to paragraph (g)(2) of this
AD. The initial compliance time for doing the tasks is at the time
specified in the applicable TR identified in table 2 to paragraph
(g)(2) of this AD, or within 90 days after the effective date of
this AD, whichever occurs later.
Table 2 to Paragraph (g)(2)--Temporary Revisions
[[Page 15424]]
[GRAPHIC] [TIFF OMITTED] TP11AP25.002
[[Page 15425]]
[GRAPHIC] [TIFF OMITTED] TP11AP25.003
BILLING CODE 4910-13-C
Note 1 to table 2 to paragraph (g)(2): The asterisk (or ``one
star'') with the last three digits of the task numbers listed in
table 2 to paragraph (g)(2) of this AD indicates that the task is an
airworthiness limitation task.
(h) Compliance Time Exception for a Certain Task
For Bombardier, Inc., Model CL-600-2B16 (604 Variant) airplanes,
S/Ns 5301 through 5665 inclusive and S/Ns 5701 through 6049
inclusive: The initial compliance time for task 27-42-01-110,
``Special Detailed Inspection of the Horizontal Stabilizer Trim
Actuator (HSTA), P/N 604-92305-7 and Subs (Vendor P/N 8454-3 and
Subs),'' of section 5-10-40, ``Certification Maintenance
Requirements,'' of Part 2, ``Airworthiness Limitations,'' of
Bombardier Challenger 604 TLMC, Publication No. CH 604, Revision 33,
dated November 22, 2022; or Bombardier Challenger 605 TLMC,
Publication No. CH 605 TLMC, Revision 22, dated November 22, 2022;
as applicable, is at the applicable compliance time specified in
paragraph (h)(1) or (2) of this AD, or within 90 days after the
effective date of this AD, whichever occurs later.
(1) For HSTA having P/N 604-92305-3 (vendor P/N 8454-1) or P/N
604-92305-5 (vendor P/N 8454-2) that were replaced with P/N 604-
92305-7 (vendor P/N 8454-3) in accordance with paragraph (j) of AD
2015-05-07, Amendment 39-18117 (80 FR 13483, March 16, 2015): Within
12 years after accomplishing the replacement.
(2) For HSTA having P/N 604-92305-7 (vendor P/N 8454-3)
manufactured before November 1, 2015: Within 12 years from the part
entry into service.
(i) No Alternative Actions and 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 (j)(1) of this AD.
(j) 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, send it to the attention of the
person identified in paragraph (k) of this AD and email to:
<a href="/cdn-cgi/l/email-protection#9adbd7d5d9dafcfbfbb4fdf5ec"><span class="__cf_email__" data-cfemail="fcbdb1b3bfbc9a9d9dd29b938a">[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's
Transport Canada Design Approval Organization (DAO). If approved by
the DAO, the approval must include the DAO-authorized signature.
(k) Additional Information
For more information about this AD, contact Brenda L. Buitrago,
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; phone: 516-228 7300; email: <a href="/cdn-cgi/l/email-protection#d5ecf8b4a3a6f8bbacb4b6baf8b6baa695b3b4b4fbb2baa3"><span class="__cf_email__" data-cfemail="b38a9ed2c5c09eddcad2d0dc9ed0dcc0f3d5d2d29dd4dcc5">[email protected]</span></a>.
(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) Section 5-10-00, ``Airworthiness Limitations,'' Section 5-
20-00, ``Scheduled Maintenance Instructions,'' Section 5-30-20,
``Corrosion Prevention and Controlled Program (CPCP),'' and Section
5-70-00, ``Custom Installations,'' of Bombardier Challenger 600 Time
Limits/Maintenance Checks (TLMC), Publication No. PSP 605, Revision
39, dated January 8, 2018.
Note 1 to paragraph (l)(2)(i): For obtaining this section of
Bombardier Challenger 600 TLMC, Publication No. PSP 605, use
Document Identification No. CH 600 TLMC.
[[Page 15426]]
(ii) Section 5-10-00, ``Airworthiness Limitations,'' Section 5-
20-00, ``Scheduled Maintenance Instructions,'' Section 5-30-20,
``Corrosion Prevention and Controlled Program (CPCP),'' and Section
5-70-00, ``Custom Installations,'' of Bombardier Challenger 601
TLMC, Publication No. PSP 601-5, Revision 46, dated January 8, 2018.
Note 2 to paragraph (l)(2)(ii): For obtaining this section
Bombardier Challenger 601 TLMC, Publication No. PSP 601-5, use
Document Identification No. CH 601 TLMC.
(iii) Section 5-10-00, ``Airworthiness Limitations,'' Section 5-
20-00, ``Scheduled Maintenance Instructions,'' Section 5-30-20,
``Corrosion Prevention and Controlled Program (CPCP),'' and Section
5-70-00, ``Custom Installations,'' of Bombardier Challenger 601
TLMC, Publication No. PSP 601A-5, Revision 42, dated January 8,
2018.
Note 3 to paragraph (l)(2)(iii): For obtaining this section of
Bombardier Challenger 601 TLMC, Publication No. PSP 601A-5, use
Document Identification No. CH 601 TLMC-1.
(iv) Part 2, ``Airworthiness Limitations,'' of Bombardier
Challenger 604 TLMC, Publication No. CH 604 TLMC, Revision 33, dated
November 22, 2022.
Note 4 to paragraph (l)(2)(iv): The document identification
number for ordering Bombardier Challenger 604 TLMC, Publication No.
CH 604 TLMC is incorrectly identified as ``CH 600 TLMC'' on page 2
of the TLMC. For obtaining Part 2 of Bombardier Challenger 604 TLMC,
Publication No. CH 604 TLMC, use Document Identification No. CH 604
TLMC.
(v) Part 2, ``Airworthiness Limitations,'' of Bombardier
Challenger 605 Time Limits/Maintenance Checks, Publication No. CH
605 TLMC, Revision 22, dated November 22, 2022.
(vi) Part 2, ``Airworthiness Limitations,'' of Bombardier
Challenger 650 Time Limits/Maintenance Checks, Publication No. CH
650 TLMC, Revision 9, dated November 22, 2022.
(vii) Bombardier Temporary Revision No. 5-2-5, dated October 16,
2023.
Note 5 to paragraphs (l)(2): The asterisk (or ``one star'') with
the last three digits of the task numbers listed paragraphs
(l)(2)(vii) through (x), (l)(2)(xii), and (l)(2)(xiv) of this AD
indicates that the task is an airworthiness limitation task.
(viii) Bombardier Temporary Revision No. 5-2-29, dated October
25, 2023.
(ix) Bombardier Temporary Revision No. 5-2-73, dated October 25,
2023.
(x) Bombardier Temporary Revision No. TR 5-164, dated December
23, 2022.
(xi) Bombardier Temporary Revision No. TR 5-165, dated October
25, 2023.
(xii) Bombardier Temporary Revision No. TR 5-268, dated December
23, 2022.
(xiii) Bombardier Temporary Revision No. TR 5-269, dated October
25, 2023.
(xiv) Bombardier Temporary Revision No. TR 5-282, dated December
23, 2022.
(xv) Bombardier Temporary Revision No. TR 5-283, dated October
25, 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#274644095e524b6746425548091b46074f5542411a" 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 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#fd9b8fd394938e8d989e89949293bd939c8f9cd39a928b"><span class="__cf_email__" data-cfemail="f79185d99e9984879294839e9899b799968596d9909881">[email protected]</span></a>.
Issued on April 3, 2025.
Steven W. Thompson,
Acting Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2025-06062 Filed 4-10-25; 8:45 am]
BILLING CODE 4910-13-P
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</html>Indexed from Federal Register on April 11, 2025.
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