Proposed Rule2024-14437
Airworthiness Directives; Airbus SAS 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
July 1, 2024
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for all Airbus SAS Model A350-941 and A350-1041 airplanes. This proposed AD was prompted by a report the thrust reverser and pylon thermal blankets were found damaged due to air leaking from the pre- cooler exchanger (PCE). This proposed AD would require repetitively testing the PCE for air leaks and reporting the results, and depending on findings, replacing the PCE and inspecting the thermal blankets for damage, as specified in a European Union Aviation Safety Agency (EASA) AD, which is proposed for incorporation by reference. The FAA is proposing this AD to address the unsafe condition on these products.
Full Text
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<title>Federal Register, Volume 89 Issue 126 (Monday, July 1, 2024)</title>
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[Federal Register Volume 89, Number 126 (Monday, July 1, 2024)]
[Proposed Rules]
[Pages 54393-54395]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2024-14437]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-1701; Project Identifier MCAI-2024-00153-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 A350-941 and A350-1041 airplanes. This
proposed AD was prompted by a report the thrust reverser and pylon
thermal blankets were found damaged due to air leaking from the pre-
cooler exchanger (PCE). This proposed AD would require repetitively
testing the PCE for air leaks and reporting the results, and depending
on findings, replacing the PCE and inspecting the thermal blankets for
damage, as specified in a European Union Aviation Safety Agency (EASA)
AD, which is proposed for incorporation by reference. 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 August 15,
2024.
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-2024-1701; 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, contact EASA, Konrad-Adenauer-Ufer 3,
50668 Cologne, Germany; telephone +49 221 8999 000; email
<a href="/cdn-cgi/l/email-protection#3f7e7b4c7f5a5e4c5e115a4a4d504f5e115a4a"><span class="__cf_email__" data-cfemail="1455506754717567753a7161667b64753a7161">[email protected]</span></a>; website easa.europa.eu. You may find this material
on the EASA website ad.easa.europa.eu. It is also available at
<a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-2024-1701.
<bullet> You may view this material at the FAA, Airworthiness
Products Section, Operational Safety Branch, 2200 South 216th Street,
Des Moines, WA. For information on the availability of this material at
the FAA, call 206-231-3195.
FOR FURTHER INFORMATION CONTACT: Dat Le, Aviation Safety Engineer, FAA,
1600 Stewart Avenue, Suite 410, Westbury, NY 11590; telephone 516-228-
7317; email <a href="/cdn-cgi/l/email-protection#c8aca9bce6bee6a4ad88aea9a9e6afa7be"><span class="__cf_email__" data-cfemail="026663762c742c6e67426463632c656d74">[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 ADDRESSES. Include ``Docket No. FAA-2024-1701; Project Identifier
MCAI-2024-00153-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 Dat
Le, Aviation Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410,
Westbury, NY 11590; telephone 516-228-7317; email <a href="/cdn-cgi/l/email-protection#3d595c49134b1351587d5b5c5c135a524b"><span class="__cf_email__" data-cfemail="aacecbde84dc84c6cfeacccbcb84cdc5dc">[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 2024-0058R1, dated April 16, 2024
(EASA AD 2024-0058R1) (also referred to as the MCAI), to correct an
unsafe condition for all Airbus SAS Model A350-941 and A350-1041
airplanes. The MCAI states that during a maintenance inspection, thrust
reverser and pylon thermal blankets were found damaged due to air
leaking from the PCE. This condition, if not detected and corrected,
could result in thermal blanket damage that, if combined with an
independent event of engine fire, could lead to a temporary
uncontrolled fire.
[[Page 54394]]
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-2024-1701.
Related Material Under 1 CFR Part 51
EASA AD 2024-0058R1 specifies a repetitive air leak test of the PCE
and reporting the results. If a leak is detected, EASA AD 2024-0058R1
specifies to replace the PCE and visually inspect the thrust reverser
and pylon thermal blankets and replace if damaged. EASA AD 2024-0058R1
also requires performing an air leak test on any newly installed PCE.
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 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 2024-0058R1 described previously, except for any differences
identified as exceptions in the regulatory text of this proposed 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, the
FAA proposes to incorporate EASA AD 2024-0058R1 by reference in the FAA
final rule. This proposed AD would, therefore, require compliance with
EASA AD 2024-0058R1 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 2024-0058R1 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-
0058R1. Service information required by EASA AD 2024-0058R1 for
compliance will be available at <a href="http://regulations.gov">regulations.gov</a> under Docket No. FAA-
2024-1701 after the FAA final rule is published.
Interim Action
The FAA considers that this proposed AD would be an interim action.
If final action is later identified, the FAA might consider further
rulemaking then.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 32 airplanes of U.S. registry. The FAA estimates the following
costs to comply with this proposed AD:
Estimated Costs for Required Actions
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Cost per Cost on U.S.
Labor cost Parts cost product operators
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3 work-hours x $85 per hour = $255........................... $0 $255 $8,160
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Estimated Costs of On-Condition Actions
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Labor cost Parts cost Cost per product
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Up to 24 work-hours x $85 per Up to $18,844..... Up to $20,884.
hour = Up to $2,040.
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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 current 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: 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
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
[[Page 54395]]
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:
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-2024-1701; Project Identifier MCAI-2024-
00153-T.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by August 15, 2024.
(b) Affected ADs
None.
(c) Applicability
This AD applies to all Airbus SAS Model A350-941 and A350-1041
airplanes, certificated in any category.
(d) Subject
Air Transport Association (ATA) of America Code 36, Pneumatic.
(e) Unsafe Condition
This AD was prompted by a report the thrust reverser and pylon
thermal blankets were found damaged due to air leaking from the pre-
cooler exchanger (PCE). The FAA is issuing this AD to address the
PCE leaking air. The unsafe condition, if not addressed, could
result in thermal blanket damage that, if combined with an
independent event of engine fire, could lead to a temporary
uncontrolled fire.
(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 (EASA) AD
2024-0058R1, dated April 16, 2024 (EASA AD 2024-0058R1).
(h) Exceptions to EASA AD 2024-0058R1
(1) Where EASA AD 2024-0058R1 refers to its effective date, this
AD requires using the effective date of this AD.
(2) Where paragraph (4) of EASA AD 2024-0058R1 specifies ``if
any discrepancy is detected, before next flight, contact Airbus for
approved instructions and accomplish those instructions
accordingly,'' this AD requires replacing that text with ``if any
discrepancy is detected, the discrepancy must be repaired before
further flight using a method approved by the Manager, International
Validation 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) Paragraph (6) of EASA AD 2024-0058R1 specifies to report air
leak test results to Airbus within a certain compliance time. For
this AD, report test results at the applicable time specified in
paragraph (h)(3)(i) or (ii) of this AD.
(i) If the test was done on or after the effective date of this
AD: Submit the report within 30 days after the test.
(ii) If the test was done before the effective date of this AD:
Submit the report within 30 days after the effective date of this
AD.
(4) This AD does not adopt the ``Remarks'' section of EASA AD
2024-0058R1.
(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, mail it to the address identified
in paragraph (j) of this AD. Information may be emailed to: <a href="/cdn-cgi/l/email-protection#bb8296faede896faf2e9968c888b96faf6f4f8fbdddada95dcd4cd"><span class="__cf_email__" data-cfemail="60594d2136334d2129324d5753504d212d2f23200601014e070f16">[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 EASA; or Airbus SAS's EASA 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 referenced in EASA AD
2024-0058R1 contains paragraphs that are labeled as RC, the
instructions in RC paragraphs, including subparagraphs under an RC
paragraph, must be done to comply with this AD; any paragraphs,
including subparagraphs under those paragraphs, that are not
identified as RC are recommended. The instructions in paragraphs,
including subparagraphs under those paragraphs, 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 instructions identified as RC can
be done and the airplane can be put back in an airworthy condition.
Any substitutions or changes to instructions identified as RC
require approval of an AMOC.
(j) Additional Information
For more information about this AD, contact Dat Le, Aviation
Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY
11590; telephone 516-228-7317; email <a href="/cdn-cgi/l/email-protection#dabebbaef4acf4b6bf9abcbbbbf4bdb5ac"><span class="__cf_email__" data-cfemail="355154411b431b5950755354541b525a43">[email protected]</span></a>.
(k) Material Incorporated by Reference
(1) The Director of the Federal Register approved the
incorporation by reference (IBR) 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 2024-0058R1,
dated April 16, 2024.
(ii) [Reserved]
(3) For EASA AD 2024-0058R1, contact EASA, Konrad-Adenauer-Ufer
3, 50668 Cologne, Germany; telephone +49 221 8999 000; email
<a href="/cdn-cgi/l/email-protection#da9b9ea99abfbba9bbf4bfafa8b5aabbf4bfaf"><span class="__cf_email__" data-cfemail="6120251221040012004f0414130e11004f0414">[email protected]</span></a>; website easa.europa.eu. You may find this EASA
AD on the EASA website ad.easa.europa.eu.
(4) You may view this material at the FAA, Airworthiness
Products Section, Operational Safety Branch, 2200 South 216th
Street, 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#8debffa3e4e3fefde8eef9e4e2e3cde3ecffeca3eae2fb"><span class="__cf_email__" data-cfemail="8aecf8a4e3e4f9faefe9fee3e5e4cae4ebf8eba4ede5fc">[email protected]</span></a>.
Issued on June 25, 2024.
Suzanne Masterson,
Deputy Director, Integrated Certificate Management Division, Aircraft
Certification Service.
[FR Doc. 2024-14437 Filed 6-28-24; 8:45 am]
BILLING CODE 4910-13-P
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