Lycoming AEIO-540 Airworthiness Directives

Every AD in the library whose text names the Lycoming AEIO-540, of which 581 are registered in the US.

16 not superseded, 3 of them with a repeat action. 27 listed in all, newest published March 4, 2026.

Published sinceHide 11 supersededOnly repeat actions16 of 27

2026-04-11Requires the actions in AD 2024-21-02 and expands the applicabilityEngineSupersedes 2024-21-02Repeat actionMar 4, 2026
2015-19-07Lycoming Engines Fuel Injected Reciprocating EnginesEngineSupersedes 2011-26-04Repeat actionSep 29, 2015
2002-12-07Textron Lycoming Reciprocating EnginesEngineSupersedes 2000-18-53Repeat actionJun 18, 2002
2015-02-07Lycoming Engines Reciprocating Engines (Type Certificate previously held by Textron Lycoming Division, AVCO Corporation)EngineFeb 4, 2015
2012-19-01Lycoming Engines Reciprocating EnginesEngineSupersedes 2006-20-09Sep 19, 2012
2012-03-06Continental Motors, Lycoming Engines, Superior Air Parts, Inc. EnginesEngineSupersedes 2011-15-10Feb 9, 2012
2005-19-11Requires replacing certain crankshaftsLycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, LO-360, AEIO-540, IO-540, O-540, and TIO-540 Series Reciprocating Engines · EngineSep 16, 2005
2004-05-24Lycoming Engines (Formerly Textron Lycoming) AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 Series Reciprocating EnginesEngineSupersedes 2002-23-06Mar 15, 2004
2003-14-03Textron Lycoming Fuel Injected Reciprocating EnginesEngineSupersedes 98-18-12Jul 10, 2003
97-15-11Avco Lycoming and Textron Lycoming Reciprocating EnginesEngineSupersedes 97-01-03Jul 28, 1997
95-07-01Requires removal prior to further flight of suspect unapproved connecting rod bolts and replacement with serviceable connecting rod boltsLycoming Engines, Textron Lycoming, AVCO Corporation Engines · EngineMar 28, 1995
92-12-05Lycoming Engines, Textron Lycoming, AVCO Corporation EnginesEngineJul 10, 1992
87-10-06 R1Lycoming Engines EnginesEngineSep 1, 1989
83-22-04Lycoming Engines EnginesEngineNov 4, 1983
79-04-05Lycoming Engines, Textron Lycoming, AVCO Corporation EnginesEngineSep 26, 1979
78-23-10Lycoming Engines, Textron Lycoming, AVCO Corporation EnginesEngineNov 7, 1978

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.