Turbomeca 1A1 Airworthiness Directives

Every AD in the library whose text names the Turbomeca 1A1, of which 8 are registered in the US.

17 not superseded, 4 of them with a repeat action. 21 listed in all, newest published November 1, 2016.

Published sinceHide 4 supersededOnly repeat actions17 of 21

2013-08-22Requires daily post-flight checks of the engine tachometer's unit cycle-counting featureTurbomeca S.A. Turboshaft Engines · EngineRepeat actionApr 23, 2013
2012-24-03Requires determining the engine history; performing a one-time visual inspection of the axial compressor for erosion; performing initial and repetitive cleaning of the gas generator hollow shaft; and replacing the...Turbomeca S.A. Turboshaft Engines · EngineSupersedes 2003-12-14Repeat actionDec 3, 2012
2009-26-07Requires the same actions, but adds five more serial numbers of the reduction gearboxes (module M05) that are affected, and adds an alternative optional terminating action to the repetitive visual inspectionsTurbomeca Arriel 1A1, 1A2, 1B, 1C, 1C1, 1C2, 1D, 1D1, 1E2, 1K1, 1S, and 1S1 Turboshaft Engines · EngineSupersedes 2009-12-51Repeat actionDec 28, 2009
94-25-08Turbomeca S.A. EnginesEngineRepeat actionDec 15, 1994
2016-22-10Requires removing the centrifugal impeller and replacing with a part eligible for installationTurbomeca S.A. Turboshaft Engines · EngineNov 1, 2016
2015-13-04Turbomeca S.A. Turboshaft EnginesEngineSupersedes 2014-19-05Jul 28, 2015
2013-24-05Requires a one-time inspection of the free turbine (FT) module (M04) for the affected Turbomeca STurbomeca S.A. Turboshaft Engines · EngineDec 24, 2013
2012-27-02Requires performing a high gas generator speed (NG) rating vibration checkTurbomeca S.A. Turboshaft Engines · EngineJan 10, 2013
2010-19-06 R1Turbomeca S.A. EnginesEngineSupersedes 2010-19-06Jan 9, 2012
2011-26-02Turbomeca Arriel 1 Series Turboshaft EnginesEngineSupersedes 2010-19-06Dec 13, 2011
2010-12-02Turbomeca S.A. MAKILA 1A and 1A1 Turboshaft EnginesEngineJun 8, 2010
2008-08-16Requires replacing the selector-comparator board in the ECU with a board incorporating Turbomeca modification TU 250Turbomeca Makila 1A and 1A1 Turboshaft Engines · EngineSupersedes 2002-15-05Apr 16, 2008
2007-03-20Turbomeca S.A. Makila 1A and 1A1 Turboshaft EnginesEngineFeb 12, 2007
2002-19-02Turbomeca S.A. Makila Models 1A, 1A1, and 1A2 Turboshaft EnginesEngineSep 18, 2002
2002-14-26Turbomeca S.A. Arriel Models 1A, 1A1, 1B, 1D, and 1D1 Turboshaft EnginesEngineJul 22, 2002
2000-20-01Turbomeca S.A. EnginesEngineOct 2, 2000
2000-06-11Requires a one-time visual inspection of the scavenge and lubrication systems for obstruction due to coke deposits, then reconditioning of the engine oil system prior to return to serviceTurbomeca Makila 1 Series Turboshaft Engines · EngineApr 11, 2000

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.