Proposed Rule2025-02401
Airworthiness Directives; Airbus SAS Airplanes
Primary source
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Published
February 11, 2025
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus SAS Model A321-111, -112, -131, -211, -212, -213, -231, -232, -251N, -252N, -253N, -271N, -272N, -251NX, -252NX, -253NX, - 271NX, and -272NX airplanes. This proposed AD was prompted by the identification of an erroneous value of the main landing gear (MLG) tire width in the aircraft data files used for aircraft performance computation. This proposed AD would require revising the existing airplane flight manual (AFM) to incorporate a complementary performance data file (CPDF) update as specified in a European Union Aviation Safety Agency (EASA), which is proposed for incorporation by reference (IBR). 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 27 (Tuesday, February 11, 2025)</title>
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[Federal Register Volume 90, Number 27 (Tuesday, February 11, 2025)]
[Proposed Rules]
[Pages 9291-9293]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-02401]
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Proposed Rules
Federal Register
________________________________________________________________________
This section of the FEDERAL REGISTER contains notices to the public of
the proposed issuance of rules and regulations. The purpose of these
notices is to give interested persons an opportunity to participate in
the rule making prior to the adoption of the final rules.
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Federal Register / Vol. 90, No. 27 / Tuesday, February 11, 2025 /
Proposed Rules
[[Page 9291]]
DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2025-0197; Project Identifier MCAI-2024-00440-T]
RIN 2120-AA64
Airworthiness Directives; Airbus SAS 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 Airbus SAS Model A321-111, -112, -131, -211, -212, -213, -231,
-232, -251N, -252N, -253N, -271N, -272N, -251NX, -252NX, -253NX, -
271NX, and -272NX airplanes. This proposed AD was prompted by the
identification of an erroneous value of the main landing gear (MLG)
tire width in the aircraft data files used for aircraft performance
computation. This proposed AD would require revising the existing
airplane flight manual (AFM) to incorporate a complementary performance
data file (CPDF) update as specified in a European Union Aviation
Safety Agency (EASA), which is proposed for incorporation by reference
(IBR). 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 March 28,
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-2025-0197; 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 EASA material identified in this proposed AD, contact
EASA, Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221
8999 000; email <a href="/cdn-cgi/l/email-protection#78393c0b381d190b19561d0d0a170819561d0d"><span class="__cf_email__" data-cfemail="a5e4e1d6e5c0c4d6c48bc0d0d7cad5c48bc0d0">[email protected]</span></a>; website easa.europa.eu. You may
find this material on the EASA website at ad.easa.europa.eu. It is also
available at <a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2025-0197.
<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: Timothy Dowling, Aviation Safety
Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 11590;
phone: 206-231-3667; email: <a href="/cdn-cgi/l/email-protection#d6a2bfbbb9a2beaff8a6f8b2b9a1babfb8b196b0b7b7f8b1b9a0"><span class="__cf_email__" data-cfemail="52263b3f3d263a2b7c227c363d253e3b3c35123433337c353d24">[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-2025-0197;
Project Identifier MCAI-2024-00440-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 this 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
Timothy Dowling, Aviation Safety Engineer, FAA, 1600 Stewart Avenue,
Suite 410, Westbury, NY 11590; phone: 206-231-3667; email:
<a href="/cdn-cgi/l/email-protection#097d6064667d61702779276d667e6560676e496f6868276e667f"><span class="__cf_email__" data-cfemail="1a6e7377756e7263346a347e756d7673747d5a7c7b7b347d756c">[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
EASA, which is the Technical Agent for the Member States of the
European Union, has issued EASA AD 2024-0151, dated July 31, 2024 (EASA
AD 2024-0151) (also referred to as the MCAI), to correct an unsafe
condition for all Airbus SAS Model A321-111, -112, -131, -211, -212, -
213, -231, -232, -251N, -252N, -253N, -271N, -272N, -251NX, -252NX, -
253NX, -271NX, and -272NX airplanes. The MCAI states an erroneous value
of the MLG tire width has been identified in the aircraft data files
used for aircraft performance computation. The MLG tire width is used
for the calculation of performance on contaminated runways (water,
slush, dry snow, and wet snow runway states), especially for drag
modelling. An erroneous value of the MLG tire width, if not corrected,
could result in the erroneous calculation of certain data, including,
but not limited to, takeoff
[[Page 9292]]
distance and accelerate stop distance, possibly leading to runway
excursions.
The FAA is proposing 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-2025-0197.
Material Incorporated by Reference Under 1 CFR Part 51
EASA AD 2024-0151 specifies procedures for revising the existing
AFM to incorporate a CPDF update. 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, it
has notified the FAA of the unsafe condition described in the MCAI
referenced above. The FAA is issuing this NPRM after determining that
the unsafe condition described previously is likely to exist or develop
in other products of the same type design.
Proposed AD Requirements in This NPRM
This proposed AD would require accomplishing the actions specified
in EASA AD 2024-0151 described previously, except for any differences
identified as exceptions in the regulatory text of this proposed AD.
Compliance With AFM Revisions
EASA AD 2024-0151 requires operators to ``inform all flight crews''
of revisions to the AFM, and thereafter to ``operate the aeroplane
accordingly.'' However, this proposed AD does not specifically require
those actions as those actions are already required by FAA regulations.
FAA regulations require operators furnish to pilots any changes to the
AFM (for example, 14 CFR 121.137), and to ensure the pilots are
familiar with the AFM (for example, 14 CFR 91.505). As with any other
flightcrew training requirement, training on the updated AFM content is
tracked by the operators and recorded in each pilot's training record,
which is available for the FAA to review. FAA regulations also require
pilots to follow the procedures in the existing AFM including all
updates. 14 CFR 91.9 requires that any person operating a civil
aircraft must comply with the operating limitations specified in the
AFM. Therefore, including a requirement in this proposed AD to operate
the airplane according to the revised AFM would be redundant and
unnecessary.
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, the
FAA proposes to incorporate EASA AD 2024-0151 by reference in the FAA
final rule. This proposed AD would, therefore, require compliance with
EASA AD 2024-0151 in its entirety through that incorporation, except
for any differences identified as exceptions in the regulatory text of
this proposed AD. Using common terms that are the same as the heading
of a particular section in EASA AD 2024-0151 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 2024-
0151. Material required by EASA AD 2024-0151 for compliance will be
available at <a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2025-0197 after the
FAA final rule is published.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 742 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
Estimated Costs for Required Actions
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
1 work-hour x $85 per hour = $85............................. $0 $85 $63,070
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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:
[[Page 9293]]
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:
Airbus SAS: Docket No. FAA-2025-0197; Project Identifier MCAI-2024-
00440-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by March 28, 2025.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all Airbus SAS Model A321-111, -112, -131, -
211, -212, -213, -231, -232, -251N, -252N, -253N, -271N, -272N, -
251NX, -252NX, -253NX, -271NX, and -272NX airplanes, certificated in
any category.
(d) Subject
Air Transport Association (ATA) of America Code 32, Landing
gear.
(e) Unsafe Condition
This AD was prompted by the identification of an erroneous value
of the main landing gear (MLG) tire width in the aircraft data files
used for aircraft performance computation. The FAA is issuing this
AD to correct an erroneous value of the MLG tire width used to
calculate aircraft performance on a contaminated runway. This unsafe
condition, if not corrected, could result in the erroneous
calculation of certain data, including, but not limited to, takeoff
distance and accelerate stop distance, possibly leading to runway
excursions.
(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 2024-0151,
dated July 31, 2024 (EASA AD 2024-0151).
(h) Exceptions to EASA AD 2024-0151
(1) Where EASA AD 2024-0151 refers to its effective date, this
AD requires using the effective date of this AD.
(2) Where paragraph (1) of EASA AD 2024-0151 specifies to
``inform all flight crews, and, thereafter, operate the aeroplane
accordingly,'' this AD does not require those actions as those
actions are already required by existing FAA operating regulations
(see 14 CFR 91.9, 14 CFR 91.505, and 14 CFR 121.137).
(3) This AD does not adopt the ``Remarks'' section of EASA AD
2024-0151.
(i) Additional AD Provisions
The following provisions also apply to this AD:
(1) Alternative Methods of Compliance (AMOCs): The Manager, AIR-
520, Continued Operational Safety 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 Continued Operational Safety 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="7e3f33313d3e181f1f50191108">[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, AIR-520,
Continued Operational Safety Branch, FAA; or EASA; or Airbus SAS's
EASA Design Organization Approval (DOA). If approved by the DOA, the
approval must include the DOA-authorized signature.
(3) Required for Compliance (RC): Except as required by
paragraph (i)(2) of this AD, if any material contains procedures or
tests that are identified as RC, those procedures and tests must be
done to comply with this AD; any procedures or tests that are not
identified as RC are recommended. Those procedures and tests that
are not identified as RC may be deviated from using accepted methods
in accordance with the operator's maintenance or inspection program
without obtaining approval of an AMOC, provided the procedures and
tests identified as RC can be done and the airplane can be put back
in an airworthy condition. Any substitutions or changes to
procedures or tests identified as RC require approval of an AMOC.
(j) Additional Information
For more information about this AD, contact Timothy Dowling,
Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; phone: 206-231-3667; email:
<a href="/cdn-cgi/l/email-protection#76021f1b19021e0f5806581219011a1f18113610171758111900"><span class="__cf_email__" data-cfemail="a3d7caceccd7cbda8dd38dc7ccd4cfcacdc4e3c5c2c28dc4ccd5">[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) European Union Aviation Safety Agency (EASA) AD 2024-0151,
dated July 31, 2024.
(ii) [Reserved]
(3) For EASA material identified in this AD, contact EASA,
Konrad-Adenauer-Ufer 3, 50668 Cologne, Germany; telephone +49 221
8999 000; email <a href="/cdn-cgi/l/email-protection#3b7a7f487b5e5a485a155e4e49544b5a155e4e"><span class="__cf_email__" data-cfemail="df9e9bac9fbabeacbef1baaaadb0afbef1baaa">[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, 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#a2c4d08ccbccd1d2c7c1d6cbcdcce2ccc3d0c38cc5cdd4"><span class="__cf_email__" data-cfemail="7d1b0f5314130e0d181e091412133d131c0f1c531a120b">[email protected]</span></a>.
Issued on February 4, 2025.
Peter A. White,
Deputy Director, Integrated Certificate Management Division, Aircraft
Certification Service.
[FR Doc. 2025-02401 Filed 2-10-25; 8:45 am]
BILLING CODE 4910-13-P
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