AD 2025-26-03

(a) Effective Date

    This airworthiness directive (AD) is effective January 27, 2026.

(b) Affected ADs

    None.

(c) Applicability

    This AD applies to Rolls-Royce Deutschland Ltd & Co KG Model 
Trent 1000-A, Trent 1000-AE, Trent 1000-C, Trent 1000-CE, Trent 
1000-D, Trent 1000-E, Trent 1000-G, and Trent 1000-H engines as 
identified in European Union Aviation Safety Agency (EASA) AD 2024-
0122, dated June 28, 2024 (EASA AD 2024-0122).

(d) Subject

    Joint Aircraft System Component (JASC) Code 7200, Engine 
(Turbine/Turboprop).

(e) Unsafe Condition

    This AD was prompted by a determination made by the manufacturer 
that a high-pressure compressor (HPC) mini-disc anti-rotation block 
could possibly release into the HPC assembly stage 5 and 6 discs and 
cone rotor rear shaft (HPC rear drum) during an engine operation. 
The FAA is issuing this AD to detect and correct any missing or 
loose parts and foreign objects in the engine. The unsafe condition, 
if not addressed, could lead to failure of the HPC assembly stage 5 
and 6 discs and the HPC rear drum, and consequent structural failure 
of the engine's critical parts.

(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, EASA AD 2024-0122.

(h) Exceptions to EASA AD 2024-0122

    (1) Where EASA AD 2024-0122 requires compliance from its 
effective date, this AD requires using the effective date of this 
AD.
    (2) Where EASA AD 2024-0122 specifies to ``contact Rolls-Royce 
Deutschland Ltd & Co KG,'' this AD requires replacing that text with 
``contact the Manager, AIR-520 Continued Operational Safety Branch, 
FAA; or EASA; or the Rolls-Royce Deutschland Ltd & Co KG EASA Design 
Organization Approval (DOA). If approved by the DOA, the approval 
must include the DOA-authorized signature.''
    (3) Where the material referenced in EASA AD 2024-0122 specifies 
``REJECT the engine'', this AD requires replacing that text with 
``remove the engine from service''.
    (4) This AD does not adopt the ``Remarks'' paragraph of EASA AD 
2024-0122.

(i) No Reporting Requirement

    Although the service material referenced in EASA AD 2024-0122 
specifies to submit certain information to the manufacturer, 
including capturing photos and videos, this AD does not include 
those requirements.

(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 the International Validation 
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 2024-0122, 
dated June 28, 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, 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].