Rule2025-03441
Airworthiness Directives; Pratt & Whitney Engines
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
March 4, 2025
Effective
April 8, 2025
Issuing agencies
Transportation DepartmentFederal Aviation Administration
Abstract
The FAA is adopting a new airworthiness directive (AD) for certain Pratt & Whitney (PW) Model PW1519G, PW1521G, PW1521GA, PW1521G- 3, PW1524G, PW1524G-3, PW1525G, PW1525G-3, PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A engines with a certain high-pressure compressor (HPC) 7th-stage axial rotor installed. This AD was prompted by an analysis of an event involving an International Aero Engines, LLC (IAE LLC) Model PW1127GA-JM engine, which experienced an HPC 7th-stage integrally bladed rotor (IBR-7) separation that resulted in an aborted takeoff. This AD requires performing initial and repetitive angled ultrasonic inspections (AUSI) of certain HPC 7th-stage axial rotors for cracks and replacing the HPC 7th-stage axial rotors if necessary. 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 41 (Tuesday, March 4, 2025)</title>
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[Federal Register Volume 90, Number 41 (Tuesday, March 4, 2025)]
[Rules and Regulations]
[Pages 11099-11102]
From the Federal Register Online via the Government Publishing Office [<a href="http://www.gpo.gov">www.gpo.gov</a>]
[FR Doc No: 2025-03441]
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DEPARTMENT OF TRANSPORTATION
Federal Aviation Administration
14 CFR Part 39
[Docket No. FAA-2024-2026; Project Identifier AD-2024-00163-E;
Amendment 39-22971; AD 2025-04-13]
RIN 2120-AA64
Airworthiness Directives; Pratt & Whitney Engines
AGENCY: Federal Aviation Administration (FAA), DOT.
ACTION: Final rule.
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SUMMARY: The FAA is adopting a new airworthiness directive (AD) for
certain Pratt & Whitney (PW) Model PW1519G, PW1521G, PW1521GA, PW1521G-
3, PW1524G, PW1524G-3, PW1525G, PW1525G-3, PW1919G, PW1921G, PW1922G,
PW1923G, and PW1923G-A engines with a certain high-pressure compressor
(HPC) 7th-stage axial rotor installed. This AD was prompted by an
analysis of an event involving an International Aero Engines, LLC (IAE
LLC) Model PW1127GA-JM engine, which experienced an HPC 7th-stage
integrally bladed rotor (IBR-7) separation that resulted in an aborted
takeoff. This AD requires performing initial and repetitive angled
ultrasonic inspections (AUSI) of certain HPC 7th-stage axial rotors for
cracks and replacing the HPC 7th-stage axial rotors if necessary. The
FAA is issuing this AD to address the unsafe condition on these
products.
DATES: This AD is effective April 8, 2025.
The Director of the Federal Register approved the incorporation by
reference of certain publications listed in this AD as of April 8,
2025.
ADDRESSES:
AD Docket: You may examine the AD docket at <a href="http://regulations.gov">regulations.gov</a> under
Docket No. FAA-2024-2026; 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, 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 PW material identified in this AD, contact PW, 400
Main Street, East Hartford, CT 06118; phone: (860) 565-0140; email:
<a href="/cdn-cgi/l/email-protection#1078757c602224506062716464677879647e75693e737f7d"><span class="__cf_email__" data-cfemail="94fcf1f8e4a6a0d4e4e6f5e0e0e3fcfde0faf1edbaf7fbf9">[email protected]</span></a>; website: <a href="http://connect.prattwhitney.com">connect.prattwhitney.com</a>.
<bullet> You may view this material at the FAA, Airworthiness
Products Section, Operational Safety Branch, 1200 District Avenue,
Burlington, MA 01803. 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-2024-2026.
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#fb989a899497d5959c8e829e95bb9d9a9ad59c948d"><span class="__cf_email__" data-cfemail="8eedeffce1e2a0e0e9fbf7ebe0cee8efefa0e9e1f8">[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 certain PW Model
PW1519G, PW1521G, PW1521GA, PW1521G-3, PW1524G, PW1524G-3, PW1525G,
PW1525G-3, PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A engines.
The NPRM published in the Federal Register on August 19, 2024 (89 FR
67009). The NPRM was prompted by an analysis of an event involving an
IAE LLC Model PW1127GA-JM engine, which experienced an HPC IBR-7
separation that resulted in an aborted takeoff, and a manufacturer
records review where it was determined that the failure of the HPC IBR-
7 was caused by a nickel powdered metal anomaly. The manufacturer also
determined that the nickel powdered metal anomaly is similar in nature
to an anomaly previously observed, and these parts are susceptible to
failure much earlier than previously determined. As a result, the FAA
issued multiple ADs requiring AUSIs for certain affected parts, however
the overall mitigation plan included several actions that were not
[[Page 11100]]
available when those ADs were published. Since that time, PW has
developed the AUSI for the HPC 7th-stage axial rotors.
In the NPRM, the FAA proposed to require performing initial and
repetitive AUSIs of certain HPC 7th-stage axial rotors for cracks and
replacement if necessary. The FAA is issuing this AD to address the
unsafe condition on these products.
Discussion of Final Airworthiness Directive
Comments
The FAA received comments from three commenters. The commenters
were the Air Line Pilots Association, International (ALPA), PW, and
Delta Air Lines, Inc (DAL). ALPA supported the NPRM without change. The
following presents the comments received on the NPRM and the FAA's
response to each comment.
Request To Clarify Required Actions for Performing AUSIs
PW and DAL requested that the FAA revise paragraphs (g)(1) and (2)
of the proposed AD by replacing ``in accordance with paragraphs
(g)(1)(i) and (g)(1)(ii)'' to ``in accordance with paragraph (g)(1)(i)
or (g)(1)(ii).'' PW noted that the intent is to perform one step or the
other, as applicable. DAL stated that the current language would drive
the requirement to perform an AUSI in accordance with the ASBs listed
in both paragraphs.
The FAA agrees to update the language in paragraphs (g)(1) and (2)
of this AD as requested.
Request To Correct Reference to Service Material
DAL and PW requested that the FAA revise the reference to service
material in the proposed AD from ``PW1000G-A-72-00-0157-00A-930A-D,
Issue No: 002, dated May 22, 2024'' to ``PW1000G-A-72-00-0157-00B-930A-
D, Issue No: 002, dated May 22, 2024.'' DAL noted that PW1000G-A-72-00-
0157-00A-930A-D is an incorrect reference and may cause confusion
because it is used for an unrelated issue on PW1500G Model engines.
The FAA agrees that the reference to the service material is
incorrect. This AD has been updated as requested.
Request To Add Special Instruction to Paragraph (i) of the Proposed AD
PW requested that the FAA add PW Special Instruction (SI) No. 100F-
24 Revision TBD, dated TBD to paragraph (i) Credit for Previous Actions
of the proposed AD. PW stated that they plan to provide the latest SI
No. 100F-24 with the Revision Letter and date of issuance to the FAA
prior to final rule issuance. PW also noted that the affected parts
included in PW SI No. 100F-24 receive an AUSI scan in production.
The FAA disagrees with the commenter's request to add PW SI No.
100F-24 to paragraph (i) of the AD. The FAA notes that there is no need
to provide previous credit to an action that is required at the next
piece-part exposure. In addition, the FAA cannot reference a document
that has not been issued.
Request To Revise Definition of Part Eligible for Installation
DAL and PW requested that the FAA revise paragraph (h)(3) of the
proposed AD to include new hardware that has not been service run in
the definition for ``part eligible for installation.'' DAL also
requested that the FAA add the following language to paragraph (h)(3)
of the proposed AD; ``(iv) A new zero-time HPC 7th-stage axial rotor,
P/N 30G5307, that has passed AUSI per original manufacturing records.''
PW also requested that the FAA revise paragraph (h)(3) of the proposed
AD to read as follows; ``(iv) A new zero-time HPC 7th-stage axial
rotor, PN 30G5307, that per Pratt & Whitney Special Instruction No.
100F-24 Revision TBD, dated TBD (SI No. 100F-24) received an angle scan
at new part production.'' DAL noted that the global AMOC to AD 2024-06-
04 allows for the use of PW SI No. 100F-24 to aid in determining
hardware installation eligibility, and a similar approach within the
subject AD is required to provide a method of ensuring new zero-time
hardware has a record of AUSI accomplishment. PW noted that the parts
listed in SI No. 100F-24 receive an AUSI scan in production and should
be included in the definition for part eligible for installation.
The FAA agrees that the definition for a ``part eligible for
installation'' should include new parts that have not been service run
and that have already undergone an AUSI during production. The FAA has
added the following paragraph to this AD: ``(h)(3)(iv): A new zero-time
HPC 7th-stage axial rotor, P/N 30G5307, that has passed an AUSI at new
part production.'' The FAA has also added the following note to this
AD: ``Note 1 to paragraph (h)(3)(iv): Parts that have been inspected at
new part production are identified in the original manufacturing record
for the part and may be obtained using PW's Vital Statistics Logbook
look up tool.'' Instructions on how to use PW's Vital Statistics
Logbook look up tool can be found in PW Special Instruction No. 100F-
24, Revision E or later revisions. The FAA disagrees with the request
to include reference to PW SI No. 100F-24 in the definition for a
``part eligible for installation'' because the latest revision of the
service material has not been issued yet and was not available for
review while processing this AD.
Request To Clarify Installation Eligibility for Rotors on Different
Engine Models
DAL requested that the FAA clarify whether the following steps
provide installation eligibility for the 7th-stage axial rotor, P/N
30G5307, regardless of which engine model the part originated from:
(1) Step 7 of PW ASB PW1000G-A-72-00-0210-00A-930A-D, Issue No:
002, dated May 22, 2024.
(2) Step 5.B of PW ASB PW1000G-A-72-00-0211-00A-930A-D, Issue No:
002, dated August 1, 2024.
(3) Step 7 of PW ASB PW1000G-A-72-00-0157-00B-930A-D, Issue No:
002, dated May 22, 2024.
(4) Step 5.B of PW ASB PW1000G-A-72-00-0158-00B-930A-D, Issue No:
002, dated August 1, 2024.
DAL noted that the HPC 7th-stage axial rotor having P/N 30G5307 is
used in both PW Model PW1500G and PW1900G engines.
To clarify, the service material listed in paragraphs (g)(1) and
(2) of this AD and identified by the commenter may be used to indicate
accomplishment of the AUSI. The FAA did not change this AD as a result
of this comment.
Request To Change Language From ``Crack'' to ``Crack Indication''
DAL requested that the FAA change the word ``crack'' to ``crack
indication'' in paragraphs (g)(1), (2), and (3) of the proposed AD. DAL
noted that the AUSI procedure can only show if the part being inspected
has a ``crack indication,'' not a ``crack,'' so the current language in
paragraphs (g)(1), (2), and (3) of the proposed AD will not drive
replacement of affected hardware.
The FAA partially agrees. The FAA does not agree with the wording
proposed by the commenter in paragraphs (g)(1) and (2) because those
paragraphs require inspecting for cracks. The title of NDIP 1281 is,
``PW1500 24K Rotor 7 High Pressure Compressor Disks Off-Wing Immersion
Ultrasonic Inspection for Crack Detection.'' The FAA also disagrees
with the commenter's note that the current language in paragraphs
(g)(1), (2), and (3) of the proposed AD will not drive hardware
replacement because parts that fail the required AUSI will be
[[Page 11101]]
removed, regardless of the nomenclature used. Verification that a crack
indication is not an actual crack can only be done through destructive
evaluation of the part. The FAA agrees to meet the commenter's intent
in paragraph (g)(3) of this AD by changing the wording from ``if any
crack is found,'' to ``if any crack indication is found.''
Conclusion
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, and
any other changes described previously, 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 the following material:
(1) PW Alert Service Bulletin (ASB) PW1000G-A-72-00-0157-00B-930A-
D, Issue No: 002, dated May 22, 2024; and PW ASB PW1000G-A-72-00-0210-
00A-930A-D, Issue No: 002, dated May 22, 2024; which specify procedures
for performing initial AUSIs on affected HPC 7th-stage axial rotors.
This material also includes the serial numbers of affected HPC 7th-
stage axial rotors. This material is distinct because it applies to
different engine models in different configurations.
(2) PW ASB PW1000G-A-72-00-0158-00B-930A-D, Issue No: 002, dated
August 1, 2024; and PW ASB PW1000G-A-72-00-0211-00A-930A-D, Issue No:
002, dated August 1, 2024; which specify procedures for performing
repetitive AUSIs on affected HPC 7th-stage axial rotors. This material
is distinct because it applies to different engine models in different
configurations.
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.
Interim Action
The FAA considers this AD to be an interim action. This unsafe
condition is still under investigation by the manufacturer and,
depending on the results of that investigation, the FAA may consider
further rulemaking action.
Costs of Compliance
The FAA estimates that this AD affects 121 engines installed on
airplanes of U.S. registry.
The FAA estimates the following costs to comply with this AD:
Estimated Costs
----------------------------------------------------------------------------------------------------------------
Cost per Cost on U.S.
Action Labor cost Parts cost product operators
----------------------------------------------------------------------------------------------------------------
AUSI of HPC 7th-stage axial rotor... 20 work-hours x $85 per $0 $1,700 $205,700
hour = $1,700.
----------------------------------------------------------------------------------------------------------------
The FAA estimates the following costs to do any necessary
replacements that would be required based on the results of the
proposed inspection. The agency has no way of determining the number of
engines that might need these replacements:
On-Condition Costs
----------------------------------------------------------------------------------------------------------------
Action Labor cost Parts cost Cost per product
----------------------------------------------------------------------------------------------------------------
Replacement of HPC 7th-stage axial rotor... 1 work-hours x $85 per hour = $84,640 $84,725
$85.
----------------------------------------------------------------------------------------------------------------
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(f), 40113, 44701.
Sec. 39.13 [Amended]
0
2. The FAA amends Sec. 39.13 by adding the following new airworthiness
directive:
2025-04-13 Pratt & Whitney: Amendment 39-22971; Docket No. FAA-2024-
2026; Project Identifier AD-2024-00163-E.
[[Page 11102]]
(a) Effective Date
This airworthiness directive (AD) is effective April 8, 2025.
(b) Affected ADs
None.
(c) Applicability
This AD applies to Pratt & Whitney (PW) Model PW1519G, PW1521G,
PW1521GA, PW1521G-3, PW1524G, PW1524G-3, PW1525G, PW1525G-3,
PW1919G, PW1921G, PW1922G, PW1923G, and PW1923G-A engines with an
installed high-pressure compressor (HPC) 7th-stage axial rotor
having part number (P/N) 30G5307.
(d) Subject
Joint Aircraft System Component (JASC) Code 7230, Turbine Engine
Compressor Section.
(e) Unsafe Condition
This AD was prompted by an analysis of an event involving an
International Aero Engines, LLC Model PW1127GA-JM engine, which
experienced an HPC 7th-stage integrally bladed rotor separation that
resulted in an aborted takeoff. The FAA is issuing this AD to
prevent failure of the HPC 7th-stage axial rotor. The unsafe
condition, if not addressed, could result in uncontained HPC 7th-
stage axial rotor failure, release of high-energy debris, damage to
the engine, damage to the airplane, and possible loss of the
airplane.
(f) Compliance
Comply with this AD within the compliance times specified,
unless already done.
(g) Required Actions
(1) At the next piece-part exposure after the effective date of
this AD and thereafter at each piece-part exposure, except as
required by paragraph (g)(2) and (4) of this AD, perform an angled
ultrasonic inspection (AUSI) of the affected HPC 7th-stage axial
rotor for cracks in accordance with paragraphs (g)(1)(i) or (ii) of
this AD, as applicable.
(i) For Model PW1500G engines: Step 7 of the Accomplishment
Instructions of PW Alert Service Bulletin (ASB) PW1000G-A-72-00-
0210-00A-930A-D, Issue No: 002, dated May 22, 2024 (PW1000G-A-72-00-
0210-00A-930A-D, Issue No: 002), or step 5.B of the Accomplishment
Instructions of PW ASB PW1000G-A-72-00-0211-00A-930A-D, Issue No:
002, dated August 1, 2024.
(ii) For Model PW1900G engines: Step 7 of the Accomplishment
Instructions of PW ASB PW1000G-A-72-00-0157-00B-930A-D, Issue No:
002, dated May 22, 2024 (PW1000G-A-72-00-0157-00B-930A-D, Issue No:
002), or step 5.B of the Accomplishment Instructions of PW ASB
PW1000G-A-72-00-0158-00B-930A-D, Issue No: 002, dated August 1,
2024.
(2) For engines with an installed HPC 7th-stage axial rotor with
a serial number listed in Table 1 of PW1000G-A-72-00-0210-00A-930A-
D, Issue No: 002, or Table 1 of PW1000G-A-72-00-0157-00B-930A-D,
Issue No: 002, that have not had an AUSI performed prior to the
effective date of this AD, at the next HPC engine shop visit after
the effective date of this AD, not to exceed 10,000 part cycles
since new, or within 100 flight cycles (FCs) after the effective
date of this AD, whichever occurs later, and thereafter at each
piece-part exposure: perform an AUSI of the HPC 7th-stage axial
rotor for cracks in accordance with paragraphs (g)(1)(i) or (ii) of
this AD, as applicable.
(3) If any crack indication is found during any inspection
required by paragraphs (g)(1) or (2) of this AD, before further
flight, remove the HPC 7th-stage axial rotor from service and
replace with a part eligible for installation.
(4) If an HPC 7th-stage axial rotor has accumulated 100 FCs or
less since the last AUSI, reinspection is not required until the
next shop visit provided that the part was not damaged during
removal from the engine.
(h) Definitions
For the purpose of this AD:
(1) ``Model PW1500G'' engines are PW Model PW1519G, PW1521G,
PW1521GA, PW1521G-3, PW1524G, PW1524G-3, PW1525G, and PW1525G-3
engines.
(2) ``Model PW1900G'' engines are PW Model PW1919G, PW1921G,
PW1922G, PW1923G, and PW1923G-A engines.
(3) A ``part eligible for installation'' is any of the
following:
(i) An HPC 7th-stage axial rotor, P/N 30G5307, that has passed
the AUSI required by paragraphs (g)(1) or (2) of this AD.
(ii) An HPC 7th-stage axial rotor, P/N 30G5307, that has a
Certificate of Conformance that shows compliance with NDIP-1281.
(iii) An HPC 7th-stage axial rotor that has a later approved P/
N.
(iv) A new zero-time HPC 7th-stage axial rotor, P/N 30G5307,
that has passed an AUSI at new part production.
Note 1 to paragraph (h)(3)(iv): Parts that have been inspected
at new part production are identified in the original manufacturing
record for the part and may be obtained using PW's Vital Statistics
Logbook look up tool.
(4) A ``piece-part exposure'' is when the HPC 7th-stage axial
rotor is disassembled from the rotor assembly.
(5) An ``HPC engine shop visit'' is when the HPC rotor assembly
is removed from the HPC module.
(i) Credit for Previous Actions
This paragraph provides credit for the initial AUSI required by
paragraphs (g)(2) of this AD, if those actions were done before the
effective date of this AD using any of the following:
(1) PW ASB PW1000G-A-72-00-0157-00B-930A-D, Issue No: 001, dated
February 15, 2024.
(2) PW ASB PW1000G-A-72-00-0158-00B-930A-D, Issue No: 001, dated
February 19, 2024.
(3) PW ASB PW1000G-A-72-00-0210-00A-930A-D, Issue No: 001, dated
February 15, 2024.
(4) PW ASB PW1000G-A-72-00-0211-00A-930A-D, Issue No: 001, dated
February 19, 2024.
(j) 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 AIR-520 Continued Operational
Safety 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#abeae6e4e8ebcdcaca85ccc4dd"><span class="__cf_email__" data-cfemail="c1808c8e8281a7a0a0efa6aeb7">[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 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#bbd8dac9d4d795d5dccec2ded5fbdddada95dcd4cd"><span class="__cf_email__" data-cfemail="ceadafbca1a2e0a0a9bbb7aba08ea8afafe0a9a1b8">[email protected]</span></a>.
(l) 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 the AD specifies otherwise.
(i) Pratt & Whitney (PW) Alert Service Bulletin (ASB) PW1000G-A-
72-00-0157-00B-930A-D, Issue No: 002, dated May 22, 2024.
(ii) PW ASB PW1000G-A-72-00-0158-00B-930A-D, Issue No: 002,
dated August 1, 2024.
(iii) PW ASB PW1000G-A-72-00-0210-00A-930A-D, Issue No: 002,
dated May 22, 2024.
(iv) PW ASB PW1000G-A-72-00-0211-00A-930A-D, Issue No: 002,
dated August 1, 2024.
(3) For PW material identified in this AD, contact PW, 400 Main
Street, East Hartford, CT 06118; phone: (860) 565-0140; email:
<a href="/cdn-cgi/l/email-protection#91f9f4fde1a3a5d1e1e3f0e5e5e6f9f8e5fff4e8bff2fefc"><span class="__cf_email__" data-cfemail="771f121b074543370705160303001f1e0319120e5914181a">[email protected]</span></a>; website: <a href="http://connect.prattwhitney.com">connect.prattwhitney.com</a>.
(4) You may view this material at the FAA, Airworthiness
Products Section, Operational Safety Branch, 1200 District Avenue,
Burlington, MA 01803. 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#593f2b7730372a293c3a2d3036371937382b38773e362f"><span class="__cf_email__" data-cfemail="dcbaaef2b5b2afacb9bfa8b5b3b29cb2bdaebdf2bbb3aa">[email protected]</span></a>.
Issued on February 21, 2025.
Peter A. White,
Deputy Director, Integrated Certificate Management Division, Aircraft
Certification Service.
[FR Doc. 2025-03441 Filed 3-3-25; 8:45 am]
BILLING CODE 4910-13-P
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</html>Indexed from Federal Register on March 4, 2025.
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