Airworthiness Directive · Amendment 39-22675 · Turbine engine reduction gear
GE Aviation Czech s.r.o. (Type Certificate Previously Held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Engines
This AD applies to GE Aviation Czech s.r.o. (GEAC) (type certificate previously held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Model M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, and M601F engines.
The FAA is superseding Airworthiness Directive (AD) 2022-13-16 for all GE Aviation Czech s.r.o. (GEAC) (type certificate previously held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Model M601D-11 engines; and AD 2022-14-12, for certain GEAC Model M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, and M601F engines. AD 2022- 13-16 required revising the airworthiness limitations section (ALS) of the existing engine maintenance manual (EMM) to incorporate a visual inspection of the centrifugal compressor case for cracks. AD 2022-14-12 required replacing the propeller shaft for Model M601F engines. AD 2022-14-12 also required calculating the accumulated life of the propeller shaft and replacing the propeller shaft, if necessary, for model M601D-11, M601E-11, M601E-11A, M601E-11AS, and M601E-11S engines. Since the FAA issued AD 2022-13-16 and AD 2022-14-12, the manufacturer revised the ALS of the existing EMM to introduce new and more restrictive tasks and limitations, expand the applicability to all Model M601 engines, and incorporate certain requirements addressed by AD 2021-13-07 and AD 2023-01-10, which prompted this AD. This AD requires revising the ALS of the existing EMM and the operator's existing approved engine maintenance or inspection program, as applicable, to incorporate new and more restrictive tasks and limitations, as specified in a European Union Aviation Safety Agency (EASA) AD, which is incorporated by reference. The FAA is issuing this AD to address the unsafe condition on these products.
(1) 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 2023-0020, dated January 23, 2023 (EASA AD 2023-0020).
(2) The action required by paragraph (g)(1) of this AD may be performed by the owner/operator (pilot) holding at least a private pilot certificate and must be entered into the aircraft records showing compliance with this AD in accordance with 14 CFR 43.9(a) and 91.417(a)(2)(v). The record must be maintained as required by 14 CFR 91.417, 121.380, or 135.439.
(1) Where EASA AD 2023-0020 defines the AMP as “The Aircraft Maintenance Programme (AMP) contains the tasks on the basis of which the scheduled maintenance is conducted to ensure the continuing airworthiness of each operated engine,” replace that text with “the aircraft maintenance program containing the tasks on the basis of which the scheduled maintenance is conducted to ensure the continuing airworthiness of each operated airplane.”
(2) Where EASA AD 2023-0020 specifies the ALS as “The Airworthiness Limitations Section of the GEAC Engine Maintenance Manual (EMM) No. 0982309 Revision 21,” replace that text with “The Airworthiness Limitations Section of the GEAC Engine Maintenance Manual (EMM) No. 0982309 Revision 22.” The ALS in Revision 22 of the EMM is unchanged from Revision 21.
(3) Where EASA AD 2023-0020 refers to its effective date, this AD requires using the effective date of this AD.
(4) Where paragraph (3) of EASA AD 2023-0020 specifies “Within 12 months after the effective date of this AD, revise the approved AMP,” replace that text with “Within 90 days after the effective date of this AD, revise the ALS of the existing approved engine maintenance or inspection program, as applicable.”
(5) This AD does not require compliance with paragraphs (1), (2), (4), and (5) of EASA AD 2023-0020.
(6) This AD does not adopt the Remarks paragraph of EASA AD 2023-0020.
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 2023-0020.
(1) Accomplishing the actions required by paragraph (g) of this AD terminates the requirements of paragraphs (g)(1) through (3) of AD 2021-13-07 for model M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, and M601F engines only.
(2) Accomplishing the actions required by paragraph (g) of this AD terminates the requirements of paragraphs (g)(1) through (3) of AD 2023-01-10 for model M601E-11, M601E-11A, M601E-11AS, M601E-11S, and M601F engines only.
The aircraft, engines and makers this AD names, by the model designations in its text. A model listed here may still be outside the AD's serial ranges.
Engines
