Airworthiness Directive · Amendment 39-23135 · GE Aviation Czech s.r.o. (Type Certificate Previously Held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Engines
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) 2024-06-02 for all GE Aviation Czech s.r.o. (GEAC) Model M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, and M601F engines. AD 2024-06-02 required a one-time detailed visual inspection (DVI) of the compressor case pad welds for any crack, and replacement of the compressor case if necessary. Since the FAA issued AD 2024-06-02, the manufacturer determined that the compliance time for the DVI can be extended, and repetitive inspections of the centrifugal compressor case must be accomplished. This AD requires performing repetitive DVIs of the compressor case pad welds for any crack, replacing the compressor case if necessary, and sending certain inspection results to the manufacturer. The FAA is issuing this AD to address the unsafe condition on these products.
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 2024-0194, dated October 15, 2024 (EASA AD 2024-0194).
(1) Where EASA AD 2024-0194 requires compliance from its effective date, this AD requires using the effective date of this AD.
(2) Where EASA AD 2024-0194 defines serviceable part as “Centrifugal compressor case, eligible for installation in accordance with GEAC instructions, which is not an affected part”, this AD requires replacing that text with “centrifugal compressor case, eligible for installation, which is not an affected part”.
(3) Where EASA AD 2024-0194 specifies “Replacing the affected part of an engine with a centrifugal compressor case, eligible for installation in accordance with GEAC instructions, which is not an affected part”, this AD requires replacing that text with “Replacing the affected part of an engine with a centrifugal compressor case, eligible for installation, which is not an affected part”.
(4) Where EASA AD 2024-0194 specifies to contact the manufacturer for approved instructions if any crack is detected on an affected part, this AD requires replacement of the compressor case.
(5) This AD does not adopt the “Remarks” paragraph of EASA AD 2024-0194.
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
