[Federal Register Volume 90, Number 110 (Tuesday, June 10, 2025)]
[Rules and Regulations]
[Pages 24315-24317]
From the Federal Register Online via the Government Publishing Office [www.gpo.gov]
[FR Doc No: 2025-10434]
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Rules and Regulations
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains regulatory documents
having general applicability and legal effect, most of which are keyed
to and codified in the Code of Federal Regulations, which is published
under 50 titles pursuant to 44 U.S.C. 1510.
The Code of Federal Regulations is sold by the Superintendent of Documents.
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Federal Register / Vol. 90, No. 110 / Tuesday, June 10, 2025 / Rules
and Regulations
[[Page 24315]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2025-0336; Project Identifier MCAI-2022-00194-T;
Amendment 39-23057; AD 2025-11-11]
RIN 2120-AA64
Airworthiness Directives; MHI RJ Aviation ULC (Type Certificate
Previously Held by 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 all
MHI RJ Aviation ULC Model CL-600-2C10 (Regional Jet Series 700, 701,
and 702), CL-600-2C11 (Regional Jet Series 550), CL-600-2D15 (Regional
Jet Series 705), CL-600-2D24 (Regional Jet Series 900), and CL-600-2E25
(Regional Jet Series 1000) airplanes. This AD was prompted by a
determination that new or more restrictive aircraft maintenance manual
(AMM) tasks are necessary. This AD requires revising the existing
maintenance or inspection program, as applicable, to incorporate new or
more restrictive AMM tasks, as specified in a Transport Canada, which
is incorporated by reference. The FAA is issuing this AD to address the
unsafe condition on these products.
DATES: This AD is effective July 15, 2025.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of July 15,
2025.
ADDRESSES:
AD Docket: You may examine the AD docket at regulations.gov under
Docket No. FAA-2025-0336; 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]. You may find this material on the
Transport Canada 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-2025-0336.
FOR FURTHER INFORMATION CONTACT: Christopher Spencer, 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 by adding an AD that would apply to all MHI RJ Aviation ULC
Model CL-600-2C10 (Regional Jet Series 700, 701, and 702), CL-600-2C11
(Regional Jet Series 550), CL-600-2D15 (Regional Jet Series 705), CL-
600-2D24 (Regional Jet Series 900), and CL-600-2E25 (Regional Jet
Series 1000) airplanes. The NPRM was published in the Federal Register
on March 5, 2025 (90 FR 11239). The NPRM was prompted by AD CF-2019-44,
dated December 9, 2019 (also referred to as the MCAI), issued by
Transport Canada, which is the aviation authority for Canada. The MCAI
states the manufacturer developed a new appendix for candidate
certification maintenance requirement (CCMR) interval limitations that
are airworthiness limitations. The FAA has determined failure to adhere
to the interval limitations specified in the appendix can lead to
reduced structural integrity and reduced controllability of the
airplane.
In the NPRM, the FAA proposed to require revising the existing
maintenance or inspection program, as applicable, to incorporate new or
more restrictive AMM tasks, as specified in Transport Canada AD CF-
2019-44, dated December 9, 2019. The FAA is issuing this AD to address
reduced structural integrity and reduced controllability of the
airplane.
You may examine the MCAI in the AD docket at regulations.gov under
Docket No. FAA-2025-0336.
Discussion of Final Airworthiness Directive
Comments
The FAA received a comment from Air Line Pilots Association,
International (ALPA), who supported the NPRM without change.
Additional Change Made to This AD
The FAA has revised paragraph (h)(4) of this AD to clarify that
this AD does not adopt paragraphs 2. and 3. of Transport Canada AD CF-
2019-44, which includes the subsequent non-indented paragraphs
following paragraphs 2. and 3.
Conclusion
These products have been approved by the civil aviation authority
of another country and are approved for operation in the United States.
Pursuant to the FAA's bilateral agreement with this State of Design
Authority, that authority has notified the FAA of the unsafe condition
described in the MCAI referenced above. The FAA reviewed the relevant
data, considered any 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 the change 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
The FAA reviewed Transport Canada AD CF-2019-44, dated December 9,
2019, which specifies new AMM task intervals that are identified within
the airworthiness limitations.
[[Page 24316]]
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.
Differences Between This AD and the MCAI or Referenced Material
Transport Canada AD CF-2019-44, dated December 9, 2019, introduces
new CCMR intervals as specified in the MCAI. Instead of mandating the
CCMRs as done in the Transport Canada AD, the FAA, after coordination
with Transport Canada, determined the corresponding AMM task numbers
will be incorporated. Therefore, the FAA mandates the incorporation
into the maintenance or inspection program the AMM tasks as specified
in paragraph (h)(2) of this AD.
Transport Canada AD CF-2019-44, dated December 9, 2019, refers to
``Temporary Revision (TR) ALI-0716, dated September 13, 2019, or later
revisions'' for the airworthiness limitation tasks referenced in the
AMM tasks. Since that TR was issued, TR ALI-0735, dated April 15, 2020,
has been published. The FAA has referred to TR ALI-0735, dated April
15, 2020, in paragraph (h)(2) of this AD.
Costs of Compliance
The FAA estimates that this AD affects 556 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this 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
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 adding the following new airworthiness
directive:
2025-11-11 MHI RJ Aviation ULC (Type Certificate Previously Held by
Bombardier, Inc.): Amendment 39-23057; Docket No. FAA-2025-0336;
Project Identifier MCAI-2022-00194-T.
(a) Effective Date
This airworthiness directive (AD) is effective July 15, 2025.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all MHI RJ Aviation ULC (Type Certificate
Previously Held by Bombardier, Inc.) airplanes, certificated in any
category, identified in paragraphs (c)(1) through (5) of this AD.
(1) Model CL-600-2C10 (Regional Jet Series 700, 701, and 702)
airplanes.
(2) Model CL-600-2C11 (Regional Jet Series 550) airplanes.
(3) Model CL-600-2D15 (Regional Jet Series 705) airplanes.
(4) Model CL-600-2D24 (Regional Jet Series 900) airplanes.
(5) Model CL-600-2E25 (Regional Jet Series 1000) airplanes.
(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 aircraft maintenance manual (AMM) tasks are necessary
because failure to adhere to the interval limitations can lead to
reduced structural integrity and reduced controllability of the
airplane. The FAA is issuing this AD to address reduced structural
integrity and reduced controllability of the airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Maintenance or Inspection Program Revision
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-2019-44, dated December 9,
2019 (Transport Canada AD CF-2019-44).
(h) Exception to Transport Canada AD CF-2019-44
(1) Where Transport Canada AD CF-2019-44 refers to its effective
date, this AD requires using the effective date of this AD.
(2) Where paragraph 1. of Transport Canada AD CF-2019-44
specifies to ``incorporate the revised Appendix, A2-00, into Part 2
ALI as introduced by Temporary Revision (TR) ALI-0716, dated 13
September 2019, or later revisions of these tasks approved by
Transport Canada'', this AD requires replacing that text with
``revise the existing maintenance or inspection program, as
applicable, by incorporating the AMM tasks, including the interval
limitation, specified in the revised Appendix, A2-00, as introduced
by Temporary Revision (TR) ALI-0735, dated April 15, 2020, or later
revisions of these tasks approved by Transport Canada. Only the AMM
tasks and intervals must be incorporated''.
(3) The initial compliance time for doing the AMM tasks
specified in the TR identified in paragraph (h)(2) of this AD is at
the later of the times specified in paragraphs (h)(3)(i) and (ii) of
this AD.
(i) Before the applicable interval limitation specified in the
TR identified in paragraph (h)(2) of this AD since entry into
service.
(ii) Within 30 days after the effective date of this AD.
[[Page 24317]]
(4) This AD does not adopt paragraphs 2. and 3., which includes
the subsequent non-indented paragraphs, of Transport Canada AD CF-
2019-44.
(i) No Alternative Actions or Intervals
After the existing maintenance or inspection program has been
revised as required by paragraph (g) of this AD, no alternative
actions (e.g., inspections) or intervals may be used unless the
actions and intervals are approved as an alternative method of
compliance (AMOC) in accordance with the procedures specified in
paragraph (j) 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:
[email protected]. 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 MHI RJ Aviation
ULC'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 Christopher Spencer,
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; phone: 516-228-7300; email: [email protected].
(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-2019-44, dated December 9, 2019.
(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]. You may find this material on
the Transport Canada 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 June 4, 2025.
Steven W. Thompson,
Acting Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2025-10434 Filed 6-9-25; 8:45 am]
BILLING CODE 4910-13-P