Rule2026-11175
Airworthiness Directives; Airbus Helicopters Deutschland GmbH Helicopters
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
June 4, 2026
Effective
July 9, 2026
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for all Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 D-3 helicopters. This AD was prompted by a report of excessive vibrations in-flight due to an incorrect installation of the angular ball bearing of the control ring assembly. This AD requires a one-time inspection of the affected swashplates and, depending on the results of the inspection, corrective actions. This AD prohibits the installation of an affected swashplate on a helicopter, unless certain requirements are met. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 91 Issue 107 (Thursday, June 4, 2026)</title>
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[Federal Register Volume 91, Number 107 (Thursday, June 4, 2026)]
[Rules and Regulations]
[Pages 33595-33600]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2026-11175]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2025-2540; Project Identifier MCAI-2025-00158-R;
Amendment 39-23360; AD 2026-10-20]
RIN 2120-AA64
Airworthiness Directives; Airbus Helicopters Deutschland GmbH
Helicopters
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
Airbus Helicopters Deutschland GmbH (AHD) Model MBB-BK 117 D-3
helicopters. This AD was prompted by
[[Page 33596]]
a report of excessive vibrations in-flight due to an incorrect
installation of the angular ball bearing of the control ring assembly.
This AD requires a one-time inspection of the affected swashplates and,
depending on the results of the inspection, corrective actions. This AD
prohibits the installation of an affected swashplate on a helicopter,
unless certain requirements are met. The FAA is issuing this AD to
address the unsafe condition on these products.
DATES: This AD is effective July 9, 2026.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of July 9,
2026.
ADDRESSES:
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2025-2540; 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 European Union Aviation Safety Agency (EASA) material
identified in this AD, contact EASA, Konrad-Adenauer-Ufer 3, 50668
Cologne, Germany; phone: +49 221 8999 000; email: <a href="/cdn-cgi/l/email-protection#68292c1b280d091b09460d1d1a071809460d1d"><span class="__cf_email__" data-cfemail="0d4c497e4d686c7e6c2368787f627d6c236878">[email protected]</span></a>;
website: easa.europa.eu. You may find this material on the EASA website
at ad.easa.europa.eu.
<bullet> You may view this material at the FAA, Airworthiness
Products Section, Operational Safety Branch, 10101 Hillwood Parkway,
Fort Worth, TX 76177. For information on the availability of this
material at the FAA, call (817) 222-5110. It is also available at
<a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2025-2540.
FOR FURTHER INFORMATION CONTACT: Zain Jamal, Aviation Safety Engineer,
FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590; phone: (847)
294-7264; email: <a href="/cdn-cgi/l/email-protection#2e544f474000444f434f426e484f4f00494158"><span class="__cf_email__" data-cfemail="d8a2b9b1b6f6b2b9b5b9b498beb9b9f6bfb7ae">[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 all Airbus Helicopters
Deutschland GmbH Model MBB-BK 117 D-3 helicopters. The NPRM was
published in the Federal Register on September 15, 2025 (90 FR 44347).
The NPRM was prompted by EASA AD 2025-0029, dated February 7, 2025
(EASA AD 2025-0029) (also referred to as the MCAI), issued by EASA,
which is the Technical Agent for the Member States of the European
Union. The MCAI states that an occurrence of excessive vibrations in
flight was reported. The MCAI further states that subsequent
investigations revealed that an incorrect installation of the angular
ball bearing of the control ring assembly caused wear of the axial
bearing seat. This condition, if not addressed, could result in axial
play between the swashplate bearing ring assembly and the control ring
assembly and consequent reduced control of the helicopter.
In the NPRM, the FAA proposed to require a one-time inspection of
the affected swashplates and, depending on the results of the
inspection, corrective actions. The NPRM also proposed to prohibit the
installation of an affected swashplate on a helicopter unless certain
requirements are met, as specified in EASA AD 2025-0029.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2025-2540.
Discussion of Final Airworthiness Directive
Comments
The FAA received comments from two commenters. The commenters were
an individual who supported the NPRM without change, and the Citizens
Rulemaking Alliance. The following presents the comments received on
the NPRM from the Citizens Rulemaking Alliance and the FAA's response
to each comment.
Request To Issue an NPRM or Justify Forgoing Notice and Comment
The Citizens Rulemaking Alliance requested that the FAA either
convert this action to an NPRM or provide its justification for finding
good cause to bypass notice and comment procedures. The commenter
asserted the FAA has not adequately justified use of the good cause
exemption to bypass notice and comment and the 30-day delayed effective
date.
The FAA notes the comment was submitted in response to an NPRM for
which the FAA provided a 45-day comment period. This final rule is
effective 35 days after its publication in the Federal Register.
Therefore, the FAA did not change this AD as a result of this comment.
Request To Comply With the Paperwork Reduction Act (PRA)
The Citizens Rulemaking Alliance requested that the FAA revise the
AD to comply with the PRA if reporting is required or remove any
reporting provisions until PRA requirements are satisfied.
The FAA notes that paragraph (i) of this AD specifies that this AD
does not require reporting. If an AD were to require reporting, the
preamble of the AD would include a paragraph titled ``Paperwork
Reduction Act'' that would provide the applicable OMB control number,
required PRA statements, and the estimated time to collect the required
information (burden). Any costs associated with the reporting
requirement would be included in the Costs of Compliance section in the
preamble of the AD. Therefore, the FAA did not change this AD as a
result of this comment.
Request To Make Incorporation by Reference (IBR) Materials Reasonably
Available
The Citizens Rulemaking Alliance stated that the FAA's current
practices for IBR frequently fail to meet the legal and regulatory
standards for reasonable availability. The commenter called on the FAA
to guarantee that all IBR materials are easily and freely accessible to
the public.
The FAA clarifies that this AD only incorporates by reference EASA
AD 2025-0029, not the manufacturer service information referenced in
that EASA AD. The FAA posted EASA AD 2025-0029 to the AD docket when
the NPRM was published in the Federal Register. The material referenced
in EASA AD 2025-0029 may only be posted before the final rule's
publication if it is already publicly available or if there is written
consent from the owner of that material. Additionally, the FAA provided
notice in the NPRM that the material referenced in EASA AD 2025-0029
will be available in the AD docket after this AD is published.
The FAA also provides summaries and access details in the preamble
and regulatory text, makes materials available for inspection at FAA
and National Archives and Records Administration (NARA) offices, offers
publisher contact information, and obtains formal IBR approval from the
Office of the Federal Register. These efforts are intended to ensure
that all IBR materials meet the ``reasonably available'' standard
required by 1 CFR part 51.
Therefore, the FAA did not change this AD as a result of this
comment.
[[Page 33597]]
Request To Consider Impact on Small Entities
The Citizens Rulemaking Alliance requested that the FAA prepare an
initial regulatory flexibility analysis that takes into account parts,
labor, aircraft downtime, and specific small entity impacts.
Additionally, the commenter requested that the FAA adopt less
burdensome alternatives for small operators, such as explicit AMOC
alternatives, temporary ferry flight allowances, and flexible
compliance intervals.
The FAA has considered the AD's impact on small entities and
provides the following factual basis for its Regulatory Flexibility Act
(RFA) certification.
The Regulatory Flexibility Act of 1980, Public Law 96-354, 94 Stat.
1164 (5 U.S.C. 601-612), as amended by the Small Business Regulatory
Enforcement Fairness Act of 1996 (Pub. L. 104-121, 110 Stat. 857, Mar.
29, 1996) and the Small Business Jobs Act of 2010 (Pub. L. 111-240, 124
Stat. 2504, Sept. 27, 2010), requires Federal agencies to consider the
effects of the regulatory action on small business and other small
entities and to minimize any significant economic impact. The term
``small entities'' comprises small businesses and not-for-profit
organizations that are independently owned and operated and are not
dominant in their fields, and governmental jurisdictions with
populations of less than 50,000.
Small Entities to Which This AD Applies
The FAA used the definition of small entities in the RFA for this
analysis. The RFA defines small entities as small businesses, small
governmental jurisdictions, or small organizations. In 5 U.S.C. 601(3),
the RFA defines ``small business'' to have the same meaning as ``small
business concern'' under section 3 of the Small Business Act. The Small
Business Act authorizes the Small Business Administration (SBA) to
define ``small business'' by issuing regulations.
The SBA (2023) has established size standards for various types of
economic activities, or industries, under the North American Industry
Classification System (NAICS). These size standards generally define
small businesses based on the number of employees or annual receipts.
Note that the SBA definition of a small business applies to the parent
company and all affiliates as a single entity.
This AD impacts 21 entities, including 6 small entities. The table
below displays the industries with affected entities, along with the
number of affected entities and the number of small entities impacted
in each industry.
Number of Small Entities Affected by Industry
----------------------------------------------------------------------------------------------------------------
Number of Number of Percent small
NAICS Code Description Size standard entities small entities entities %
----------------------------------------------------------------------------------------------------------------
221118....................... Other Electric 650 employees.. 1 0 0
Power
Generation.
221122....................... Electric Power 1,100 employees 1 0 0
Distribution.
238220....................... Plumbing, $19.0 million.. 1 1 100
Heating, and
Air-
Conditioning
Contractors.
336411....................... Aircraft 1,500 employees 1 0 0
Manufacturing.
481211....................... Nonscheduled 1,500 employees 3 3 100
Chartered
Passenger Air
Transportation.
481219....................... Other $25.0 million.. 2 0 0
Nonscheduled
Air
Transportation.
621498....................... All Other $25.5 million.. 1 1 100
Outpatient Care
Centers.
621910....................... Ambulance $22.5 million.. 6 1 17
Services.
622110....................... General Medical $47.0 million.. 2 0 0
and Surgical
Hospitals.
N/A.......................... Government 50,000 3 0 0
Jurisdiction. population.
----------------------------------------------------------------------------------------------------------------
The following table displays the high-case cost impact of the AD on
all six small entities.
High-Case AD Cost Impact on Small Entities
----------------------------------------------------------------------------------------------------------------
Cost as a
Small entity number NAICS industry Revenue High-case cost share of
revenue %
----------------------------------------------------------------------------------------------------------------
1............................. Nonscheduled Chartered Passenger $500,000 $9,420 1.88
Air Transportation.
2............................. Nonscheduled Chartered Passenger 12,510,000 18,840 0.15
Air Transportation.
3............................. Nonscheduled Chartered Passenger 15,290,000 9,420 0.06
Air Transportation.
4............................. Ambulance Services................. 17,740,000 37,680 0.21
5............................. All Other Outpatient Care Centers.. 1,040,000 9,420 0.91
6............................. Plumbing, Heating, and Air- 17,590,000 9,420 0.05
Conditioning Contractors.
----------------------------------------------------------------------------------------------------------------
RFA Conclusions
While the FAA has determined that this AD affects a substantial
number of small entities, the high-case compliance cost of the AD
requirements relative to each small entity's annual revenue is minimal.
In the high-case scenario, the AD's cost as a percentage of annual
revenue imposes a cost no greater than 1.88 percent. Therefore, as
provided in section 605(b), the FAA certifies that this AD will not
result in a significant economic impact on a substantial number of
small entities. The FAA did not change this AD as a result of this
comment.
[[Page 33598]]
Request To Provide the Regulatory Evaluation
The Citizens Rulemaking Alliance requested that the FAA add to the
AD docket the regulatory evaluation of the proposed AD and reopen the
comment period to allow for public input on the additional cost
information.
The FAA's practice is to add the regulatory evaluation of the
proposed AD in the NPRM, not as a separate document in the AD docket.
In the Costs of Compliance section of the NPRM, the FAA disclosed
the estimated number of work hours, the number of helicopters affected
on the U.S. registry (which has been updated in this final rule),
estimated parts cost, and the aggregate costs for the U.S. fleet. The
FAA has revised the Costs of Compliance section to clarify costs of
this AD. Since the FAA provided the regulatory evaluation in the NPRM,
and the commenter did not provide additional information for the FAA to
consider in its analysis, it is not necessary to reopen the comment
period or provide additional information in the AD docket.
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
The FAA reviewed EASA AD 2025-0029, which specifies procedures for
a one-time inspection of swashplates having part number D623M2050102
and a serial number up to 0487 inclusive and, depending on the
inspection results, accomplishing corrective actions and contacting
Airbus Helicopters for approved repair instructions. Corrective actions
include inspecting the control ring assembly and, depending on the
results, repair or replacement of the control ring assembly or repair
of the surface protection of the control ring assembly.
The MCAI also allows the accomplishment of corrective actions using
the instructions of the applicable Aircraft Maintenance Manual (AMM)
62-32-00, 6-7. Corrective actions specified in the applicable AMM
include the examination of bolts, single row ball bearings, bushings,
and washers and, depending on the results, repair or replacement of
these parts, as applicable.
Additionally, the MCAI allows the installation of an affected
swashplate on a helicopter if it is inspected before it is installed,
and if any corrective actions are completed in accordance with the
instructions of the service material.
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
The MCAI applies to Model MBB-BK117 D-3m helicopters, whereas this
AD does not because that model does not have an FAA type certificate.
The MCAI requires reporting inspection results to the manufacturer,
whereas this AD does not. The MCAI does not apply to helicopters where
it cannot be determined that a swashplate has been inspected, whereas
this AD applies to those helicopters.
Costs of Compliance
The FAA estimates that this AD affects 55 helicopters of the U.S.
registry. The FAA estimates that following costs to comply with this
AD.
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost \1\ Parts cost product operators
----------------------------------------------------------------------------------------------------------------
Inspect swashplate.................... 4 work-hours x $85 per $0 $340 $18,700
hour = $340.
----------------------------------------------------------------------------------------------------------------
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
helicopters that might need these on-condition actions. However, the
FAA estimates the low- and high-case costs for each helicopter. If a
helicopter only incurs required costs (low-case scenario), each
helicopter will incur $340 in compliance costs. If a helicopter incurs
all required and on-condition costs (high-case scenario), each
helicopter could incur up to $9,420 in compliance costs.
---------------------------------------------------------------------------
\1\ The FAA estimated operators will incur $85 in costs per
labor hour, which is the weighted average fiscal year (FY) 2026
fully loaded wage of an aircraft mechanic ($69.85) working 60% of
the labor hours and a general and operations manager ($108.15)
working 40% of the labor hours. The FAA estimated these wages by
taking the average of the FY 2024 Bureau of Labor Statistics (BLS)
air transportation industry average wage for aircraft mechanics and
general and operations managers (See: Occupational Employment and
Wage Statistics Query System, BLS (May 2024), <a href="http://data.bls.gov/oes/">data.bls.gov/oes/</a>);
multiplying each wage by a fringe benefit factor of 1.42 (See:
Employer Cost for Employee Compensation--December 2024, BLS (2024),
<a href="http://bls.gov/news.release/archives/ecec_03142025.pdf">bls.gov/news.release/archives/ecec_03142025.pdf</a>); and adjusting
these 2024 wages to 2026 dollars using an implicit Gross Domestic
Product (GDP) Price Deflator of 2.8% (See: Gross Domestic Product:
Implicit Price Deflator, FRED (2026) <a href="http://fred.stlouisfed.org/series/GDPDEF">fred.stlouisfed.org/series/GDPDEF</a>).
Estimated Costs of On-Condition Actions
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product
----------------------------------------------------------------------------------------------------------------
Inspect control ring assembly... 4 work-hours x $85 $0.......................... $340
per hour = $340.
Repair or replace control ring Up to 64 work-hours Up to $3,300................ Up to $8,740.
assembly. x $85 hour =
$5,440.
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[[Page 33599]]
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:
2026-10-20 Airbus Helicopters Deutschland GmbH: Amendment 39-23360;
Docket No. FAA-2025-2540; Project Identifier MCAI-2025-00158-R.
(a) Effective Date
This airworthiness directive (AD) is effective July 9, 2026.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all Airbus Helicopters Deutschland GmbH (AHD)
Model MBB-BK 117 D-3 helicopters, certificated in any category.
(d) Subject
Joint Aircraft System Component (JASC) Code 6230, Main Rotor
Mast/Swashplate.
(e) Unsafe Condition
This AD was prompted by a report of an occurrence of excessive
vibrations in-flight due to an incorrect installation of the angular
ball bearing of the control ring assembly. The FAA is issuing this
AD to detect and correct incorrect installation of the angular ball
bearing. The unsafe condition, if not addressed, could result in
axial play between the swashplate bearing ring assembly and the
control ring assembly and consequent reduced control of the
helicopter.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Requirements
Except as specified in paragraphs (h) and (i) of this AD: Comply
with all required actions and compliance times specified in, and in
accordance with, European Union Aviation Safety Agency (EASA) AD
2025-0029, dated February 7, 2025 (EASA AD 2025-0029).
(h) Exceptions to EASA AD 2025-0029
(1) Where EASA AD 2025-0029 requires compliance in terms of
flight hours, this AD requires using hours time-in-service.
(2) Where EASA AD 2025-0029 refers to its effective date, this
AD requires using the effective date of this AD.
(3) Where EASA AD 2025-0029 defines ``Affected part'', this AD
adds ``including those where it cannot be determined if the
`Supplementary Inspection-4000 FH' has been accomplished on the
swashplate'' to the end of that definition.
(4) Where the material referenced in EASA AD 2025-0029 specifies
``check'', this AD requires replacing that text with ``inspect''.
(5) Where the material referenced in EASA AD 2025-0029 specifies
``Tightening torque inspection of the hexagonal head bolts of the
inner ring and outer ring'', this AD requires replacing that text
with ``Tightening torque inspection of the hexagonal head bolts of
the inner ring''.
(6) Where paragraph (2) of EASA AD 2025-0029 specifies ``in case
of finding any discrepancy during the inspection of the control ring
assembly, to accomplish the applicable corrective actions before
next flight, or to contact AH [Airbus Helicopters] for approved
repair instructions and, before next flight, to accomplish those
instructions accordingly'', this AD requires replacing that text
with ``in case of finding any discrepancy during the inspection of
the control ring assembly, before further flight, accomplish the
instructions or corrective actions in accordance with a method
approved by the Manager, International Validation Branch, FAA; or
EASA; or Airbus Helicopters' EASA Design Organization Approval
(DOA). If approved by the DOA, the approval must include the DOA-
authorized signature''.
(7) This AD does not adopt the ``Remarks'' section of EASA AD
2025-0029.
(i) No Reporting Requirement
Although the material referenced in EASA AD 2025-0029 specifies
to submit certain information to the manufacturer, this AD does not
require that action.
(j) Special Flight Permits
Special flight permits are prohibited.
(k) Alternative Methods of Compliance (AMOCs)
(1) 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 (l) of this AD and
email to: <a href="/cdn-cgi/l/email-protection#ebaaa6a4a8ab8d8a8ac58c849d"><span class="__cf_email__" data-cfemail="afeee2e0ecefc9cece81c8c0d9">[email protected]</span></a>.
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the responsible Flight Standards Office.
(l) Additional Information
For more information about this AD, contact Zain Jamal, Aviation
Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; phone: (847) 294-7264; email: <a href="/cdn-cgi/l/email-protection#c7bda6aea9e9ada6aaa6ab87a1a6a6e9a0a8b1"><span class="__cf_email__" data-cfemail="9ee4fff7f0b0f4fff3fff2def8ffffb0f9f1e8">[email protected]</span></a>.
(m) 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 the AD specifies otherwise.
(i) European Union Aviation Safety Agency (EASA) AD 2025-0029,
dated February 7, 2025.
(ii) [Reserved]
(3) For EASA material identified in this AD, contact EASA,
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; phone: +49 221 8999
000; email: <a href="/cdn-cgi/l/email-protection#27666354674246544609425255485746094252"><span class="__cf_email__" data-cfemail="69282d1a290c081a08470c1c1b061908470c1c">[email protected]</span></a>; website: easa.europa.eu. You may
find this material on the EASA website at ad.easa.europa.eu.
(4) You may view this material at the FAA, Airworthiness
Products Section, Operational Safety Branch, 10101 Hillwood Parkway,
Fort Worth, TX 76177. For information on the availability of this
material at the FAA, call (817) 222-5110.
[[Page 33600]]
(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#5a3c28743334292a3f392e3335341a343b283b743d352c"><span class="__cf_email__" data-cfemail="d5b3a7fbbcbba6a5b0b6a1bcbabb95bbb4a7b4fbb2baa3">[email protected]</span></a>.
Issued on May 19, 2026.
Steven W. Thompson,
Acting Deputy Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2026-11175 Filed 6-3-26; 8:45 am]
BILLING CODE 4910-13-P
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