Proposed Rule2024-26092
Airworthiness Directives; International Aero Engines AG Engines
Primary source
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Published
November 12, 2024
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA proposes to adopt a new airworthiness directive (AD) for certain International Aero Engines (IAE AG) Model V2522-A5, V2524- A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5, V2531-E5, and V2533-A5 engines. This proposed AD was prompted by further analysis of an event involving an IAE AG Model V2533-A5 engine that had an uncontained failure of a high-pressure turbine (HPT) 1st- stage hub that resulted in high-energy debris penetrating the engine cowling. This proposed AD would require revising the airworthiness limitations section (ALS) of the existing maintenance manual or instructions for continued airworthiness and the existing approved maintenance or inspection program, as applicable, to include new inspections of certain critical rotating parts. 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 218 (Tuesday, November 12, 2024)</title>
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[Federal Register Volume 89, Number 218 (Tuesday, November 12, 2024)]
[Proposed Rules]
[Pages 88908-88910]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2024-26092]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-2423; Project Identifier AD-2024-00320-E]
RIN 2120-AA64
Airworthiness Directives; International Aero Engines AG Engines
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 certain International Aero Engines (IAE AG) Model V2522-A5, V2524-
A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5, V2528-D5, V2530-A5,
V2531-E5, and V2533-A5 engines. This proposed AD was prompted by
further analysis of an event involving an IAE AG Model V2533-A5 engine
that had an uncontained failure of a high-pressure turbine (HPT) 1st-
stage hub that resulted in high-energy debris penetrating the engine
cowling. This proposed AD would require revising the airworthiness
limitations section (ALS) of the existing maintenance manual or
instructions for continued airworthiness and the existing approved
maintenance or inspection program, as applicable, to include new
inspections of certain critical rotating parts. 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 December
27, 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-2024-2423; 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, any comments received, and other
information. The street address for Docket Operations is listed above.
FOR FURTHER INFORMATION CONTACT: Carol Nguyen, Aviation Safety
Engineer, FAA, 2200 South 216th Street, Des Moines, WA 98198 phone:
(781) 238-7655; email: <a href="/cdn-cgi/l/email-protection#147775667b783a7a73616d717a547275753a737b62"><span class="__cf_email__" data-cfemail="a6c5c7d4c9ca88c8c1d3dfc3c8e6c0c7c788c1c9d0">[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-2024-2423;
Project
[[Page 88909]]
Identifier AD-2024-00320-E'' 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 revise 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 Carol
Nguyen, Aviation Safety Engineer, FAA, 2200 South 216th Street, Des
Moines, WA 98198. 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 received a report of an event involving an IAE AG Model
V2533-A5 engine that experienced an uncontained HPT 1st-stage hub
failure that resulted in high-energy debris penetrating the engine
cowling. Further analysis shows that new inspections of the HPT 1st-
stage hub and HPT 2nd-stage hub should be added for certain IAE AG
Model V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5,
V2528-D5, V2530-A5, V2531-E5, and V2533-A5 engines to prevent failure
of the HPT 1st-stage hub and HPT 2nd-stage hub. This condition, if not
addressed, could result in an uncontained hub failure, release of high-
energy debris, damage to the engine, damage to the airplane, and loss
of the airplane.
FAA's Determination
The FAA is issuing this NPRM after determining that the unsafe
condition described previously is likely to exist or develop on other
products of the same type design.
Proposed AD Requirements in This NPRM
This proposed AD would require revising the ALS of the existing
approved engine maintenance manual or instructions for continued
airworthiness and the existing approved maintenance or inspection
program, as applicable, to include new inspections of the HPT 1st-stage
hub and HPT 2nd-stage hub.
Costs of Compliance
The FAA estimates that this AD, if adopted as proposed, would
affect 1,514 engines installed on airplanes of U.S. registry.
The FAA estimates the following costs to comply with this proposed
AD:
Estimated Costs
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Cost per Cost on U.S.
Action Labor cost Parts cost product operators
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Revise the ALS........................ 1 work-hour x $85 per $0 $85 $128,690
hour = $85.
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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:
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:
International Aero Engines AG: Docket No. FAA-2024-2423; Project
Identifier AD-2024-00320-E.
(a) Comments Due Date
The FAA must receive comments on this airworthiness directive
(AD) by December 27, 2024.
(b) Affected ADs
None.
[[Page 88910]]
(c) Applicability
This proposed AD applies to International Aero Engines (IAE AG)
Model V2522-A5, V2524-A5, V2525-D5, V2527-A5, V2527E-A5, V2527M-A5,
V2528-D5, V2530-A5, V2531-E5, and V2533-A5 engines.
(d) Subject
Joint Aircraft System Component (JASC) Code 7250, Turbine Engine
Compressor Sections.
(e) Unsafe Condition
This AD was prompted by further analysis of an event involving
an IAE AG model V2533-A5 engines that experienced an uncontained
high-pressure turbine (HPT) 1st-stage hub failure that resulted in
high-energy debris penetrating the engine cowling. The FAA is
issuing this AD to prevent failure of the HPT 1st-stage hub and HPT
2nd-stage hub. The unsafe condition, if not addressed, could result
in an uncontained hub failure, release of high-energy debris, damage
to the engine, damage to the airplane, and loss of the airplane.
(f) Compliance
Comply with this proposed AD within the compliance times
specified, unless already done.
(g) Required Action
Within 90 days after the effective date of this AD; revise the
``Maintenance Scheduling'' paragraph of the Airworthiness
Limitations Section (ALS) of the existing approved engine
maintenance manual (EMM) or instructions for continued airworthiness
and your existing approved maintenance or inspection program, as
applicable; by incorporating the information specified in table 1 to
paragraph (g) of this AD, as applicable.
Table 1 to Paragraph (g)--ALS Additional Inspections
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Inspection (engine
Part nomenclature Part No. manual reference)
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HPT Stage 1 Hub............. 2A5001............ TASK 72-45-11-200-006.
HPT Stage 2 Hub............. 2A4802............ TASK 72-45-11-200-009.
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(h) Provisions for Alternative Actions
After the action required by paragraph (g) of this AD has been
done, no alternative actions are allowed unless they are approved as
specified in the provisions of paragraph (i) of this AD.
(i) Alternative Methods of Compliance (AMOCs)
(1) 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 local
Flight Standards District Office, as appropriate. If sending
information directly to the manager of the AIR-520 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#6f2e22202c2f090e0e41080019"><span class="__cf_email__" data-cfemail="1a5b5755595a7c7b7b347d756c">[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.
(j) Additional Information
For more information about this AD, contact Carol Nguyen,
Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines,
WA 98198; phone: (781)238-7655; email: <a href="/cdn-cgi/l/email-protection#b4d7d5c6dbd89adad3c1cdd1daf4d2d5d59ad3dbc2"><span class="__cf_email__" data-cfemail="335052415c5f1d5d54464a565d735552521d545c45">[email protected]</span></a>.
(k) Material Incorporated by Reference
None.
Issued on November 4, 2024.
Peter A. White,
Deputy Director, Integrated Certificate Management Division, Aircraft
Certification Service.
[FR Doc. 2024-26092 Filed 11-8-24; 8:45 am]
BILLING CODE 4910-13-P
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