AD Issued for GE M601 Engines - National Agricultural Aviation Association

The Federal Aviation Administration (FAA) is superseding Airworthiness Directive (AD) 2021-13-07 (dated June 14, 2021) which applies to several GE Aviation Czech M601 turboprop engines. The original AD was based on the European Union Aviation Safety Agency (EASA) AD 2021-0125-E, and required recalculating the life of critical parts.

Since the original AD was issued, the manufacturer published the airworthiness limitations section (ALS) of the existing engine maintenance manual, which includes the calculations for the life of critical parts addressed by the original AD. EASA revised AD 2021-0125-E and issued AD 2021-0125R1 (dated January 30, 2023) to limit the applicability and remove the requirements that have been incorporated into the ALS.

AD 2024-02-04, the FAA’s superseding AD, is effective March 28, 2024. It limits the applicability, as specified in EASA AD 2021-0125R1, to non-agricultural variants of the M601.