Rule2025-06067
Airworthiness Directives; Airbus 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
April 10, 2025
Effective
April 25, 2025
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is superseding Airworthiness Directive (AD) 2024-26- 01, which applied to all Airbus Helicopters Model H160-B helicopters. AD 2024-26-01 required measuring the axial play of the rotating scissors spherical bearings, and depending on the results, accomplishing corrective action and reporting inspection results. Since the FAA issued AD 2024-26-01, Airbus Helicopters issued revised material to extend the applicability to all rotating scissors spherical bearing serial numbers, change the initial compliance time, establish repetitive inspections, and extend the reporting requirements. This AD was prompted by a determination that the initial compliance time and reporting requirement needed to be modified and repetitive inspections for certain axial play measurements added. This AD retains the actions required in AD 2024-26-01, revises the initial compliance time, extends the definition of an affected part to all serial numbered rotating scissors spherical bearings, extends the reporting requirements, and requires repetitive inspections. This AD also prohibits installing an affected rotating scissors spherical bearing unless certain requirements are met. These actions are specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 90 Issue 68 (Thursday, April 10, 2025)</title>
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[Federal Register Volume 90, Number 68 (Thursday, April 10, 2025)]
[Rules and Regulations]
[Pages 15306-15310]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-06067]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2025-0613; Project Identifier MCAI-2025-00180-R;
Amendment 39-23008; AD 2025-07-06]
RIN 2120-AA64
Airworthiness Directives; Airbus Helicopters
AGENCY: Federal Aviation Administration (FAA), DOT.
[[Page 15307]]
ACTION: Final rule; request for comments.
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SUMMARY: The FAA is superseding Airworthiness Directive (AD) 2024-26-
01, which applied to all Airbus Helicopters Model H160-B helicopters.
AD 2024-26-01 required measuring the axial play of the rotating
scissors spherical bearings, and depending on the results,
accomplishing corrective action and reporting inspection results. Since
the FAA issued AD 2024-26-01, Airbus Helicopters issued revised
material to extend the applicability to all rotating scissors spherical
bearing serial numbers, change the initial compliance time, establish
repetitive inspections, and extend the reporting requirements. This AD
was prompted by a determination that the initial compliance time and
reporting requirement needed to be modified and repetitive inspections
for certain axial play measurements added. This AD retains the actions
required in AD 2024-26-01, revises the initial compliance time, extends
the definition of an affected part to all serial numbered rotating
scissors spherical bearings, extends the reporting requirements, and
requires repetitive inspections. This AD also prohibits installing an
affected rotating scissors spherical bearing unless certain
requirements are met. These actions are specified in a European Union
Aviation Safety Agency (EASA) 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 April 25, 2025.
The Director of the Federal Register approved the incorporation by
reference of a certain publication listed in this AD as of April 25,
2025.
The FAA must receive comments on this 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-2025-0613; 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
street address for Docket Operations is listed above.
Material Incorporated by Reference:
<bullet> 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#cd8c89be8da8acbeace3a8b8bfa2bdace3a8b8"><span class="__cf_email__" data-cfemail="cf8e8bbc8faaaebcaee1aababda0bfaee1aaba">[email protected]</span></a>; website: easa.europa.eu. You may find
the EASA material on the EASA website at ad.easa.europa.eu.
<bullet> You may view this material at the FAA, Office of the
Regional Counsel, Southwest Region, 10101 Hillwood Parkway, Room 6N-
321, 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-2025-0613.
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#641e050d0a4a0e05090508240205054a030b12"><span class="__cf_email__" data-cfemail="0973686067276368646865496f6868276e667f">[email protected]</span></a>.
SUPPLEMENTARY INFORMATION:
Comments Invited
The FAA invites you to send any written data, views, or arguments
about this final rule. Send your comments to an address listed under
the ADDRESSES section. Include ``Docket No. FAA-2025-0613; Project
Identifier MCAI-2025-00180-R'' at the beginning of your comments. The
most helpful comments reference a specific portion of the final rule,
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 this final rule 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 final rule.
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 AD 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 AD, 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 AD. Submissions containing CBI should be sent to Zain
Jamal, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590. Any commentary that the FAA receives which is not
specifically designated as CBI will be placed in the public docket for
this rulemaking.
Background
The FAA issued AD 2024-26-01, Amendment 39-22915 (90 FR 20, January
2, 2025) (AD 2024-26-01), for all Airbus Helicopters Model H160-B
helicopters. AD 2024-26-01 was prompted by MCAI originated by EASA,
which is the Technical Agent for the Member States of the European
Union Aviation Safety Agency. EASA issued Emergency AD 2024-0206-E,
dated October 22, 2024 (EASA AD 2024-0206-E) to correct an unsafe
condition identified as excessive axial play of the rotating scissors
spherical bearings. AD 2024-26-01 required a one-time measurement of
the axial play of the rotating scissors spherical bearings, and
depending on the results, accomplishing corrective action and reporting
inspection results. The FAA issued AD 2024-26-01 to address excessive
axial play of the rotating scissors spherical bearings, which could
result in reduced control of the helicopter.
Actions Since AD 2024-26-01 Was Issued
Since the FAA issued AD 2024-26-01, EASA superseded Emergency AD
2024-0206-E, and issued EASA AD 2025-0018, dated January 14, 2025 (EASA
AD 2025-0018). EASA AD 2025-0018 states that Airbus Helicopters issued
revised material to extend the list of the affected parts to all serial
numbers, reduce the initial inspection compliance time, and establish
repetitive inspections for certain axial play measurements. The FAA did
not issue an AD corresponding to EASA AD 2025-0018. EASA then
superseded AD 2025-0018 and issued EASA AD 2025-0040, dated February
14, 2025 (EASA AD 2025-0040) (also referred to as the MCAI), to correct
an unsafe condition on Airbus Helicopters Model H160-B helicopters. The
MCAI states that
[[Page 15308]]
Airbus Helicopters revised its material again to amend the initial
inspection compliance time and added reporting requirements when the
axial play exceeds 0.20 mm.
You may examine the MCAI in the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2025-0613.
Material Incorporated by Reference Under 1 CFR Part 51
The FAA reviewed EASA AD 2025-0040, which specifies procedures for
measuring the axial play of the rotating scissors spherical bearings
and replacing the rotating scissors spherical bearings. EASA AD 2025-
0040 also specifies reporting inspection results to Airbus Helicopters
and prohibits installing an affected rotating scissors spherical
bearing unless certain requirements are met.
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
These products have been approved by the 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, it has notified the FAA of the unsafe condition described in
the MCAI referenced above. The FAA is issuing this AD after determining
that the unsafe condition described previously is likely to exist or
develop on other products of the same type design.
AD Requirements
This AD retains certain requirements of AD 2024-26-01. This AD also
requires accomplishing the actions specified in the material already
described, except for any differences identified as exceptions in the
regulatory text of this AD.
Explanation of Required Compliance Information
In the FAA's ongoing efforts to improve the efficiency of the AD
process, the FAA developed a process to use some civil aviation
authority (CAA) ADs as the primary source of information for compliance
with requirements for corresponding FAA ADs. The FAA has been
coordinating this process with manufacturers and CAAs. As a result,
EASA AD 2025-0040 is incorporated by reference in this AD. This AD
requires compliance with EASA AD 2025-0040 in its entirety through that
incorporation, except for any differences identified as exceptions in
the regulatory text of this AD. Using common terms that are the same as
the heading of a particular section in EASA AD 2025-0040 does not mean
that operators need comply only with that section. For example, where
the AD requirement refers to ``all required actions and compliance
times,'' compliance with this AD requirement is not limited to the
section titled ``Required Action(s) and Compliance Time(s)'' in EASA AD
2025-0040. Material required by EASA AD 2025-0040 for compliance will
be available at <a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2025-0613 after
this AD is published.
Interim Action
The FAA considers that this AD is an interim action. If final
action is later identified, the FAA might consider further rulemaking.
Justification for Immediate Adoption and Determination of the Effective
Date
Section 553(b) of the Administrative Procedure Act (APA) (5 U.S.C.
551 et seq.) authorizes agencies to dispense with notice and comment
procedures for rules when the agency, for ``good cause,'' finds that
those procedures are ``impracticable, unnecessary, or contrary to the
public interest.'' Under this section, an agency, upon finding good
cause, may issue a final rule without providing notice and seeking
comment prior to issuance. Further, section 553(d) of the APA
authorizes agencies to make rules effective in less than thirty days,
upon a finding of good cause.
An unsafe condition exists that requires the immediate adoption of
this AD without providing an opportunity for public comments prior to
adoption. The FAA has found that the risk to the flying public
justifies forgoing notice and comment prior to adoption of this rule
because the affected components are part of an assembly that is
critical to the control of a helicopter. The FAA has no information
pertaining to the extent of excessive axial play of the rotating
scissors spherical bearings that may currently exist in helicopters or
how quickly degradation may occur. As the serial numbers of the
affected part have been expanded, it is possible an initial inspection
has not been performed on a helicopter where the unsafe condition
exists. This excessive axial play of the rotating scissors spherical
bearings is considered early for these parts. Accordingly, the initial
actions required by this AD must be accomplished within a time period
as short as 30 days for some helicopters. This compliance time is
shorter than the time necessary for the public to comment and for
publication of the final rule. Accordingly, notice and opportunity for
prior public comment are impracticable and contrary to the public
interest pursuant to 5 U.S.C. 553(b).
In addition, the FAA finds that good cause exists pursuant to 5
U.S.C. 553(d) for making this amendment effective in less than 30 days,
for the same reasons the FAA found good cause to forgo notice and
comment.
Regulatory Flexibility Act
The requirements of the Regulatory Flexibility Act (RFA) do not
apply when an agency finds good cause pursuant to 5 U.S.C. 553 to adopt
a rule without prior notice and comment. Because the FAA has determined
that it has good cause to adopt this rule without prior notice and
comment, RFA analysis is not required.
Costs of Compliance
The FAA estimates that this AD affects nine helicopters of U.S.
registry. Labor rates are estimated at $85 per work-hour. Based on
these numbers, the FAA estimates the following costs to comply with
this AD.
Measuring the axial play of the two rotating scissors spherical
bearings takes 2 work-hours for a cost of $170 per helicopter and
$1,530 for the U.S fleet, per inspection cycle. Reporting the results
takes 1 work-hour for a cost of $85 per helicopter and up to $765 for
the U.S. fleet, per reporting instance.
If required, replacing a rotating scissors spherical bearing takes
2 work-hours for a cost of $170 and parts cost $1,300, for an estimated
cost of $1,470 per bearing.
Paperwork Reduction Act
A federal agency may not conduct or sponsor, and a person is not
required to respond to, nor shall a person be subject to a penalty for
failure to comply with a collection of information subject to the
requirements of the Paperwork Reduction Act unless that collection of
information displays a currently valid OMB Control Number. The OMB
Control Number for this information collection is 2120-0056. Public
reporting for this collection of information is estimated to take
approximately 1 hour per response, including the time for reviewing
instructions, searching existing data sources, gathering and
maintaining the data needed, and completing and reviewing the
collection of information. All responses to this collection of
information are mandatory. Send comments regarding this burden estimate
or any other aspect of this collection of information, including
suggestions for reducing this burden, to:
[[Page 15309]]
Information Collection Clearance Officer, Federal Aviation
Administration, 10101 Hillwood Parkway, Fort Worth, TX 76177-1524.
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, and
(2) Will not affect intrastate aviation in Alaska.
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 2024-26-01, Amendment 39-22915 (90
FR 20, January 2, 2025); and
0
b. Adding the following new airworthiness directive:
2025-07-06 Airbus Helicopters: Amendment 39-23008; Docket No. FAA-
2025-0613; Project Identifier MCAI-2025-00180-R.
(a) Effective Date
This airworthiness directive (AD) is effective April 25, 2025.
(b) Affected ADs
This AD replaces AD 2024-26-01, Amendment 39-22915 (90 FR 20,
January 2, 2025) (AD 2024-26-01).
(c) Applicability
This AD applies to Airbus Helicopters Model H160-B 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 report of excessive axial play of the
rotating scissors spherical bearings. The FAA is issuing this AD to
address excessive axial play of the rotating scissors spherical
bearings. The unsafe condition, if not addressed, could result in
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 paragraph (h) of this AD: Comply with all
required actions and compliance times specified in, and in
accordance with European Union Aviation Safety Agency AD 2025-0040,
dated February 14, 2025 (EASA AD 2025-0040).
(h) Exceptions to EASA AD 2025-0040
(1) Where EASA AD 2025-0040 requires compliance in terms of
flight hours, this AD requires using hours time-in-service.
(2) Where EASA AD 2025-0040 refers to its effective date, this
AD requires using the effective date of this AD.
(3) Where EASA AD 2025-0040 refers to January 21, 2025 (the
effective date of EASA AD 2025-0018, dated January 14, 2025), this
AD requires using the effective date of this AD.
(4) Where Table 3 in appendix 1 of EASA AD 2025-0040 refers to
October 24, 2024 (the effective date of EASA AD 2024-0206-E, dated
October 22, 2024), this AD requires using January 17, 2025 (the
effective date of AD 2024-26-01).
(5) Where paragraph (7) of EASA AD 2025-0040 specifies to report
inspection results to AH [Airbus Helicopters] within certain
compliance times, for this AD, report inspection results at the
applicable times specified in paragraph (h)(5)(i) or (ii) of this
AD.
(i) For an inspection done on or after the effective date of
this AD: Submit the report within 7 days after the inspection.
(ii) For an inspection done before the effective date of this
AD: Submit the report within 7 days after the effective date of this
AD.
(6) This AD does not adopt the ``Remarks'' section of EASA AD
2025-0040.
(i) Special Flight Permits
Special flight permits are prohibited.
(j) 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 local Flight
Standards District 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#8ecfc3c1cdcee8efefa0e9e1f8"><span class="__cf_email__" data-cfemail="73323e3c30331512125d141c05">[email protected]</span></a>.
(2) Before using any approved AMOC, notify your appropriate
principal inspector, or lacking a principal inspector, the manager
of the local flight standards district office/certificate holding
district office.
(k) 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#3248535b5c1c58535f535e725453531c555d44"><span class="__cf_email__" data-cfemail="0a706b636424606b676b664a6c6b6b246d657c">[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 the AD specifies otherwise.
(i) European Union Aviation Safety Agency (EASA) AD 2025-0040,
dated February 14, 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#94d5d0e7d4f1f5e7f5baf1e1e6fbe4f5baf1e1"><span class="__cf_email__" data-cfemail="4e0f0a3d0e2b2f3d2f602b3b3c213e2f602b3b">[email protected]</span></a>; website: easa.europa.eu. You may
find the EASA material on the EASA website at ad.easa.europa.eu.
(4) You may view this material at the FAA, Office of the
Regional Counsel, Southwest Region, 10101 Hillwood Parkway, Room 6N-
321, Fort Worth, TX 76177. For information on the availability of
this material at the FAA, call (817) 222-5110.
(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#096f7b2760677a796c6a7d6066674967687b68276e667f"><span class="__cf_email__" data-cfemail="e78195c98e8994978284938e8889a789869586c9808891">[email protected]</span></a>.
[[Page 15310]]
Issued on March 31, 2025.
Paul R. Bernado,
Acting Director, Compliance & Airworthiness Division, Aircraft
Certification Service.
[FR Doc. 2025-06067 Filed 4-9-25; 8:45 am]
BILLING CODE 4910-13-P
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