Walter M601D Airworthiness Directives

Every AD in the library whose text names the Walter M601D, of which 7 are registered in the US.

5 not superseded, 1 of them with a repeat action. 9 listed in all, newest published September 16, 2025.

Published sinceHide 4 supersededOnly repeat actions5 of 9

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
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

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.