AD 2023-12-21

(a) Effective Date

    This airworthiness directive (AD) is effective August 15, 2023.

(b) Affected ADs

    This AD replaces AD 2021-26-13, Amendment 39-21872 (86 FR 72840, 
December 23, 2021).

(c) Applicability

    This AD applies to Rolls-Royce Deutschland Ltd & Co KG Model 
Trent 1000-A2, Trent 1000-AE2, Trent 1000-C2, Trent 1000-CE2, Trent 
1000-D2, Trent 1000-E2, Trent 1000-G2, Trent 1000-H2, Trent 1000-J2, 
Trent 1000-K2, and Trent 1000-L2 engines, all serial numbers.

(d) Subject

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

(e) Unsafe Condition

    This AD was prompted by the manufacturer revising the engine 
Time Limits Manual life limits of certain critical rotating parts, 
updating the direct accumulation counting data files, and updating 
certain maintenance tasks. The FAA is issuing this AD to prevent the 
failure of critical rotating parts. The unsafe condition, if not 
addressed, could result in failure of one or more engines, loss of 
thrust control, and loss of the airplane.

(f) Compliance

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

(g) Required Actions

    Except as specified in paragraph (h) of this AD: Perform all 
required actions within the compliance times specified in, and in 
accordance with, European Union Aviation Safety Agency (EASA) AD 
2022-0210, dated October 17, 2022 (EASA AD 2022-0210).

(h) Exceptions to EASA AD 2022-0210

    (1) Where EASA AD 2022-0210 defines the AMP as the approved 
Aircraft Maintenance Programme on the basis of which the operator or 
the owner ensures the continuing airworthiness of each operated 
engine, this AD defines the AMP as the Aircraft Maintenance Program 
on the basis of which the operator or the owner ensures the 
continuing airworthiness of each operated airplane.
    (2) Where EASA AD 2022-0210 refers to its effective date, this 
AD requires using the effective date of this AD.
    (3) This AD does not require compliance with paragraph (1) of 
EASA AD 2022-0210.
    (4) This AD does not require compliance with paragraph (2) of 
EASA AD 2022-0210.
    (5) Where paragraph (3) of EASA AD 2022-0210 specifies revising 
the approved AMP within 12 months after the effective date of EASA 
AD 2022-0210, this AD requires revising the existing approved 
maintenance or inspection program, as applicable, and airworthiness 
limitations section within 90 days after the effective date of this 
AD.
    (6) This AD does not adopt the ``Remarks'' paragraph of EASA AD 
2022-0210.

(i) Provisions for Alternative Actions and Intervals

    After performing the actions required by paragraph (g) of this 
AD, no alternative actions and associated thresholds and intervals, 
including life limits, are allowed unless they are approved as 
specified in the provisions of the ``Ref. Publications'' section of 
EASA AD 2022-0210.

[[Page 44042]]

(j) 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 certification office, send it to the attention of 
the person identified in paragraph (k) of this AD and email to: [email protected]. 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 Sungmo Cho, Aviation 
Safety Engineer, FAA, 1600 Stewart Avenue, Suite 410, Westbury, NY 
11590; phone: (781) 238-7241; email: [email protected].

(l) Material Incorporated by Reference

    (1) The Director of the Federal Register approved the 
incorporation by reference of the service information listed in this 
paragraph under 5 U.S.C. 552(a) and 1 CFR part 51.
    (2) You must use this service information as applicable to do 
the actions required by this AD, unless the AD specifies otherwise.
    (i) European Union Aviation Safety Agency AD 2022-0210, dated 
October 17, 2022.
    (ii) [Reserved]
    (3) For EASA AD 2022-0210, contact EASA, Konrad-Adenauer-Ufer 3, 
50668 Cologne, Germany; phone: +49 221 8999 000; email: 
[email protected]; website: easa.europa.eu. This EASA AD may be 
found in the AD docket at regulations.gov under Docket No. FAA-2023-
0437.
    (4) You may view this service information at the 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 service information that is incorporated 
by reference at the National Archives and Records Administration 
(NARA). For information on the availability of this material at 
NARA, email: [email protected], or go to: www.archives.gov/federal-register/cfr/ibr-locations.html.