AD 2025-02-14

(a) Effective Date

    This airworthiness directive (AD) is effective April 1, 2025.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Rolls-Royce Deutschland Ltd & Co KG Model 
Trent 1000-AE3, Trent 1000-CE3, Trent 1000-D3, Trent 1000-G3, Trent 
1000-H3, Trent 1000-J3, Trent 1000-K3, Trent 1000-L3, Trent 1000-M3, 
Trent 1000-N3, Trent 1000-P3, Trent 1000-Q3, Trent 1000-R3, Trent 
7000-72, and Trent 7000-72C engines.

(d) Subject

    Joint Aircraft System Component (JASC) Code 7230, Turbine Engine 
Compressor Section.

(e) Unsafe Condition

    This AD was prompted by reports of cracked intermediate pressure 
compressor (IPC) shaft assembly front air seals. The FAA is issuing 
this AD to prevent an IPC stage 1 disk burst or failure of the IPC 
front seal. The unsafe condition, if not addressed, could result in 
an IPC stage 1 disk burst with consequent release of high energy 
debris and damage to the airplane or failure of the IPC front seal 
and release of debris, which could lead to an engine in-flight 
shutdown (IFSD) and in the case of a dual IFSD could result in 
reduced control of the airplane.

(f) Compliance

    Comply with this AD within the compliance times specified, 
unless already done.

(g) Required Actions

    Except as specified in paragraphs (h), and (i) of this AD: 
Perform all required actions within the compliance times specified 
in, and in accordance with, European Union Aviation Safety Agency AD 
2024-0178, dated September 12, 2024 (EASA AD 2024-0178).

(h) Exceptions to EASA AD 2024-0178

    (1) Where EASA AD 2024-0178 refers to its effective date, this 
AD requires using the effective date of this AD.
    (2) Where the service information referenced in EASA AD 2024-
0178 specifies to reject the engine, this AD requires removing the 
affected part from service.
    (3) This AD does not adopt the Remarks paragraph of EASA AD 
2024-0178.

(i) No Reporting Requirement

    Although the service information referenced in EASA AD 2024-0178 
specifies to submit certain information to the manufacturer, this AD 
does not include that requirement.

(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, AIR-520 Continued Operational 
Safety Branch, send it to the attention of the person identified in 
paragraph (k) of this AD and email to: [email protected].
    (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 Barbara Caufield, 
Aviation Safety Engineer, FAA, 2200 South 216th Street, Des Moines, 
WA 98198; phone: (781) 238-7146; email: [email protected].

(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 2024-0178, 
dated September 12, 2024.
    (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: [email protected]; website: easa.europa.eu. You may 
find this EASA AD on the EASA website at ad.easa.europa.eu.
    (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 www.archives.gov/federal-register/cfr/ibr-locations or email [email protected].