Rule2026-10271
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
May 22, 2026
Effective
June 26, 2026
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 that inappropriate tooling was used to torque the bolts securing the baggage door stop fittings, which may have resulted in an improper torque condition. This AD requires performing a torque check of affected bolts and re-torquing, re- installing, or replacing affected bolts and nuts as applicable. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
<html>
<head>
<title>Federal Register, Volume 91 Issue 99 (Friday, May 22, 2026)</title>
</head>
<body><pre>
[Federal Register Volume 91, Number 99 (Friday, May 22, 2026)]
[Rules and Regulations]
[Pages 30197-30198]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-10271]
[[Page 30197]]
-----------------------------------------------------------------------
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2026-2282; Project Identifier MCAI-2025-01149-T;
Amendment 39-23340; AD 2026-09-18]
RIN 2120-AA64
Airworthiness Directives; Bombardier, Inc., Airplanes
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
-----------------------------------------------------------------------
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 that inappropriate tooling was used to
torque the bolts securing the baggage door stop fittings, which may
have resulted in an improper torque condition. This AD requires
performing a torque check of affected bolts and re-torquing, re-
installing, or replacing affected bolts and nuts as applicable. The FAA
is issuing this AD to address the unsafe condition on these products.
DATES: This AD is effective June 26, 2026.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of June 26,
2026.
ADDRESSES:
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2026-2282; 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 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 <a href="/cdn-cgi/l/email-protection#f8acbbd6b9918a8f978a8c9091969d8b8bbc918a9d9b8c918e9d8bd5bb97968b919f969d8b9c9d96998e919f999a9194918c9dd6acbbb88c9bd69f9bd69b99"><span class="__cf_email__" data-cfemail="9cc8dfb2ddf5eeebf3eee8f4f5f2f9efefd8f5eef9ffe8f5eaf9efb1dff3f2eff5fbf2f9eff8f9f2fdeaf5fbfdfef5f0f5e8f9b2c8dfdce8ffb2fbffb2fffd">[email protected]</span></a>. You may find this material on the
Transport Canada website at tc.canada.ca/en/aviation.
<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-2026-2282.
FOR FURTHER INFORMATION CONTACT: Brenda Buitrago Perez, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
phone: 516-228-7300; email: <a href="/cdn-cgi/l/email-protection#d8e1f5b9aeabf5b6a1b9bbb7f5bbb7ab98beb9b9f6bfb7ae"><span class="__cf_email__" data-cfemail="51687c3027227c3f2830323e7c323e22113730307f363e27">[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 was
published in the Federal Register on February 26, 2026 (91 FR 9504).
The NPRM was prompted by AD CF-2025-28, dated June 10, 2025 (Transport
Canada AD CF-2025-28) (also referred to as the MCAI), issued by
Transport Canada, which is the aviation authority for Canada. The MCAI
states that it was reported that inappropriate tooling was used to
torque the bolts securing the baggage door stop fittings, which may
have resulted in an improper torque condition. The MCAI states that the
fitting could migrate slightly during operation if the bolts were
under-torqued. Additionally, if the bolts were over-torqued, the bolts
could yield and fracture under dynamic loads. Baggage stop door
fittings consist of principal structural elements where the structural
integrity may be impacted. This condition, if not addressed, could
potentially lead to cabin depressurization should a fitting failure
occur.
In the NPRM, the FAA proposed to require a torque check of affected
bolts and re-torquing, re-installing, or replacing affected bolts and
nuts as applicable, as specified in Transport Canada AD CF-2025-28. 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-2026-2282.
Discussion of Final Airworthiness Directive
Comments
The FAA received no comments on the NPRM or on the determination of
the cost.
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 these products. 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
Transport Canada AD CF-2025-28 specifies procedures for performing
a torque check of affected bolts and re-torquing, re-installing, or
replacing affected bolts and nuts 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 45 airplanes of U.S.
registry. The FAA estimates the following costs to comply with this AD:
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Labor cost Parts cost Cost per product Cost on U.S. operators
----------------------------------------------------------------------------------------------------------------
8 work-hours x $85 per hour = $680...... $196 Up to $876................ Up to $39,420.
----------------------------------------------------------------------------------------------------------------
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.
[[Page 30198]]
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:
2026-09-18 Bombardier, Inc.: Amendment 39-23340; Docket No. FAA-
2026-2282; Project Identifier MCAI-2025-01149-T.
(a) Effective Date
This airworthiness directive (AD) is effective June 26, 2026.
(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, as identified in
Transport Canada AD CF-2025-28, dated June 10, 2025 (Transport
Canada AD CF-2025-28).
(d) Subject
Air Transport Association (ATA) of America Code 52, Doors.
(e) Unsafe Condition
This AD was prompted by reports that inappropriate tooling was
used to torque the bolts securing the baggage door stop fittings,
which may have resulted in an improper torque condition. The FAA is
issuing this AD to address improperly torqued baggage stop fittings
and possible consequent adverse impacts on structural integrity,
which if not addressed, could lead to cabin depressurization should
a fitting failure occur.
(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-2025-28.
(h) Exceptions to Transport Canada AD CF-2025-28
(1) Where Transport Canada AD CF-2025-28 refers to its effective
date, this AD requires using the effective date of this AD.
(2) Where Transport Canada AD CF-2025-28 specifies to ``re-
torque, re-install, or replace affected bolts and nuts'', this AD
requires replacing that text with ``before further flight, re-
torque, re-install, or replace affected bolts and nuts''.
(i) 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 (j) of this AD and email to:
<a href="/cdn-cgi/l/email-protection#3475797b77745255551a535b42"><span class="__cf_email__" data-cfemail="eaaba7a5a9aa8c8b8bc48d859c">[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.
(j) Additional Information
For more information about this AD, contact Brenda Buitrago
Perez, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite
410, Westbury, NY 11590; phone: 516-228-7300; email: <a href="/cdn-cgi/l/email-protection#546d79352227793a2d35373b79373b27143235357a333b22"><span class="__cf_email__" data-cfemail="5f66723e292c7231263e3c30723c302c1f393e3e71383029">[email protected]</span></a>.
(k) 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-2025-28, dated June 10, 2025.
(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 <a href="/cdn-cgi/l/email-protection#0b5f48254a62797c64797f6362656e78784f62796e687f627d6e782648646578626c656e786f6e656a7d626c6a696267627f6e255f484b7f68256c6825686a"><span class="__cf_email__" data-cfemail="7f2b3c513e160d08100d0b1716111a0c0c3b160d1a1c0b16091a0c523c10110c1618111a0c1b1a111e0916181e1d1613160b1a512b3c3f0b1c51181c511c1e">[email protected]</span></a>. 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 <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#2f495d0146415c5f4a4c5b4640416f414e5d4e01484059"><span class="__cf_email__" data-cfemail="761004581f1805061315021f1918361817041758111900">[email protected]</span></a>.
Issued on May 4, 2026.
Steven W. Thompson,
Acting Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2026-10271 Filed 5-21-26; 8:45 am]
BILLING CODE 4910-13-P
</pre><script data-cfasync="false" src="/cdn-cgi/scripts/5c5dd728/cloudflare-static/email-decode.min.js"></script></body>
</html>Indexed from Federal Register on May 22, 2026.
This is legal information, not legal advice. Laws vary by jurisdiction and change frequently. Always verify current law with official sources and consult a licensed attorney in your jurisdiction for advice on your specific situation.