Walter M601E Airworthiness Directives

Every AD in the library whose text names the Walter M601E, of which 11 are registered in the US.

10 not superseded, 1 of them with a repeat action. 14 listed in all, newest published September 16, 2025.

Published sinceHide 4 supersededOnly repeat actions10 of 14

2022-26-01Requires initial and repetitive borescope inspections (BSIs) of the dilution tube weld areas of the combustion chamber outer liner and, depending on the results of the inspections, replacement of the combustion...Turbine engine combustion section · EngineRepeat actionDec 22, 2022
2025-18-08Requires 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 manufacturerGE Aviation Czech s.r.o. (Type Certificate Previously Held by WALTER Engines a.s., Walter a.s., and MOTORLET a.s.) Engines · EngineSupersedes 2024-06-02Sep 16, 2025
2024-03-05Requires 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...Turbine engine reduction gear · EngineSupersedes 2022-13-16, 2022-14-12Mar 13, 2024
2024-02-04Turbine engine compressor sectionEngineSupersedes 2021-13-07Feb 22, 2024
2023-12-24Requires replacement of the affected propeller governors with a redesigned propeller governor and prohibits installation of the affected propeller governors, as specified in a European Union Aviation Safety Agency...Propeller governor · EngineJul 11, 2023
2023-01-10Requires recalculation of the consumed life for the affected compressor cases and compressor drums and, depending on the results of the recalculation, removal and replacement of the affected compressor case or...Turbine engine compressor section · EngineFeb 6, 2023
2020-23-01Requires the removal and replacement of the fuel control unit (FCU)Fuel control/turbine engines · EngineNov 9, 2020
2020-15-04Requires installing a modified engine outlet systemEngine collector/tailpipe/nozzle · EngineJul 27, 2020
2015-17-20Requires removing from service any affected engine with certain GGT blades installedGE Aviation Czech s.r.o. Turboprop Engines · EngineAug 27, 2015
2015-14-02Requires inspection of the reduction gearbox and supporting coneGE Aviation Czech s.r.o. Turboprop Engines · EngineJul 14, 2015

Listed by the model designations in each AD's text. An AD written for a part number, or for "all" engines of a maker, may name no model and so not appear here: search the library for the part or the maker as well.