Airworthiness Directive 2022-15025

one-time
AD 2022-15025 · 2022-07-14 · turboprop engine

Airworthiness Directives; GE Aviation Czech s.r.o. (Type Certificate Previously Held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Turboprop Engines

What this AD requires

The FAA is adopting a new airworthiness directive (AD) for certain GE Aviation Czech s.r.o. (GEAC) M601D-11, M601E-11, M601E-11A, M601E-11AS, M601E-11S, and M601F model turboprop engines. This AD was prompted by the absence of life limits for propeller shaft part number (P/N) M601-6081.6 in the airworthiness limitations section (ALS) of the applicable GEAC M601 Engine Shop Manual. This AD was also prompted by a report that operators may not have been provided with enough data to determine the accumulated life of certain propeller shafts. For M601F model turboprop engines, this AD requires removal and replacement of the propeller shaft before the propeller shaft accumulates 12,000 flight hours (FHs) since first installation on an engine, or before accumulating 350 FHs after the effective date of this AD, whichever occurs later, with a part eligible for installation. For M601D-11, M601E-11, M601E-11A, M601E-11AS, and M601E-11S model turboprop engines, this AD requires calculation of the accumulated life of the propeller shaft and, depending on the number of accumulated FHs removal and replacement of the propeller shaft with a part eligible for installation. The FAA is issuing this AD to address the unsafe condition on these products.

Which aircraft AD 2022-15025 applies to

MakesGe Aviation Czech S.R.O.
ModelsM601F, M601E-11, M601E-11A, M601D-11, M601E-11AS, M601E-11S, M601
Part-conditionalM601-6081.2, M601-6081.4.

M601F applies only to engines with an ESN listed in Attachment 1 (Group 1) of GE Aviation Czech ASB ASB-M601F-72-10-00-0056 [02] / ASB-M601D-72-10-00-0072 [02] / ASB-M601E-72-10-00-0103 [02] / ASB-M601Z-72-10-00-0056 [02], dated May 31, 2021. M601E-11 and M601E-11A apply only to engines with an ESN listed in Attachment 2 (Group 2) of the same ASB. M601D-11, M601E-11AS, and M601E-11S apply only to engines with an installed propeller shaft, part number M601-6081.2 or M601-6081.4.

Whether AD 2022-15025 actually applies to your aircraft (by serial and installed parts) and whether it’s already complied with comes from that aircraft’s records.

How AD compliance is recorded

A valid compliance record (14 CFR 43.9) states:

Method of complianceThe specific action taken (inspected, replaced, modified) and to what revision.
DateWhen the work was done.
Aircraft timeTotal time in service / tach at compliance — how recurring next-due is computed.
Signature & certificateThe A&P/IA who returned it to service, with certificate number.
Is AD 2022-15025 complied with on your aircraft?

Tailplate reads a tail number’s logbooks and matches every applicable AD — including this one — to its compliance evidence, with recurring next-due dates computed.

Look up a tail number →Read the full directive (Federal Register)

Applicability is derived from the FAA directive corpus and is advisory, not a legal airworthiness determination. Compliance is established only from an aircraft’s actual records.