AD 2026-04-11
PossibleAirworthiness Directives; Lycoming Engines
Effective: Apr 8, 2026
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Evaluated 74 candidate ADs: 0 confirmed, 74 possible, 0 excluded.
Airworthiness Directives; Lycoming Engines
Effective: Apr 8, 2026
Airworthiness Directives; Lycoming Engines
Effective: Dec 5, 2024
Airworthiness Directives; Continental Aerospace Technologies, Inc., Lycoming Engines, and Textron Lycoming/Subsidiary of Textron, Inc. Reciprocating Engines
Effective: Aug 15, 2022
Airworthiness Directives; Superior Air Parts, Inc. Engines and Lycoming Engines Reciprocating Engines With a Certain SAP Crankshaft Assembly
Effective: Jan 15, 2021
Airworthiness Directives; Lycoming Engines Reciprocating Engines
Effective: Aug 15, 2017
Airworthiness Directives; AERMACCHI S.p.A. Airplanes
Effective: Jul 11, 2014
Airworthiness Directives; Lycoming Engines Reciprocating Engines
Effective: Oct 24, 2012
Airworthiness Directives; Lycoming Engines Reciprocating Engines
Effective: Mar 27, 2012
Airworthiness Directives; Superior Air Parts, Lycoming Engines (Formerly Textron Lycoming), and Continental Motors, Inc., Fuel-Injected Reciprocating Engines
Effective: Feb 24, 2012
Airworthiness Directives: Lycoming Engines (Type Certificate Previously Held by Textron Lycoming) and Teledyne Continental Motors (TCM) Turbocharged Reciprocating Engines
Effective: Jul 13, 2011
Airworthiness Directives; Kelly Aerospace Energy Systems, LLC Rebuilt Turbochargers
Effective: Apr 19, 2010
Airworthiness Directives; Engine Components, Inc. (ECi) Reciprocating Engine Cylinder Assemblies
Effective: Feb 4, 2010
Airworthiness Directives; Superior Air Parts, Inc. (SAP), Cylinder Assemblies Part Numbers Series: SA47000L, SA47000S, SA52000, SA55000, SL32000W, SL32000WH, SL32006W, SL36000TW, SL36000W, and SL36006W
Effective: May 7, 2007
Airworthiness Directives; Hartzell Propeller Inc. ( )HC-( )2Y( )-( ) Series Propellers
Effective: Sep 25, 2006
Airworthiness Directives; Engine Components Inc. (ECi) Reciprocating Engine Cylinder Assemblies
Effective: Jul 11, 2006
Airworthiness Directives; Engine Components Incorporated (ECi) Reciprocating Engine Connecting Rods; Correction
Effective: Jun 16, 2006
Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-360, IO-360, O-360, LIO-360, and LO-360 Series Reciprocating Engines
Effective: Apr 27, 2006
Airworthiness Directives; Lycoming 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
Effective: Oct 21, 2005
Airworthiness Directives; Teledyne Continental Motors (Formerly Bendix) S-20, S-1200, D-2000, and D-3000 Series Magnetos
Effective: Jul 19, 2005
Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming), Direct-Drive Reciprocating Engines; Correction
Effective: Jun 28, 2004
Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming) AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 Series Reciprocating Engines
Effective: Mar 30, 2004
Airworthiness Directives; Textron Lycoming AEIO-540, IO-540, LTIO-540, O-540, and TIO-540 Series Reciprocating Engines
Effective: Nov 19, 2002
Airworthiness Directives; Textron Lycoming Reciprocating Engines
Effective: Jul 3, 2002
Airworthiness Directives; Textron Lycoming Reciprocating Engines IO-540 and O-540 Engines Equipped With Slick Aircraft Products Magnetos
Effective: Feb 25, 1999
Airworthiness Directives; Textron Lycoming Model O-540-F1B5 Reciprocating Engines
Effective: Feb 18, 1999
Airworthiness Directives; Textron Lycoming Model O-540-F1B5 Reciprocating Engines
Effective: Feb 18, 1999
Airworthiness Directives; Textron Lycoming and Teledyne Continental Motors Reciprocating Engines
Effective: Oct 19, 1998
Airworthiness Directives; Certain Textron Lycoming 320 and 360 Series Reciprocating Engines
Effective: Mar 30, 1998
Airworthiness Directives; Precision Airmotive Corporation Carburetors
Effective: Feb 13, 1998
Airworthiness Directives; Avco Lycoming and Textron Lycoming Reciprocating Engines
Effective: Aug 12, 1997
Airworthiness Directives; Textron Lycoming Reciprocating Engines
Effective: Dec 17, 1996
Airworthiness Directives; Textron Lycoming Reciprocating Engines
Effective: Jul 15, 1996
Airworthiness Directives; Textron Lycoming Reciprocating Engines
Effective: Jan 24, 1996
Airworthiness Directives; Textron Lycoming O-235 series reciprocating engines
Effective: Jan 24, 1996
Airworthiness Directives; Textron Lycoming O-360, LO-360, HO-360, HIO-360, TIO-360, LIO-360, AEIO-360, O-540, IO-540, TIO-540, LTIO-540, IVO-540, AEIO-540, TIO-541, and IO-720 Series Reciprocating Engines
Effective: Apr 12, 1995
Airworthiness Directives; Textron Lycoming O-360, LO-360, HO-360, HIO-360, TIO-360, LIO-360, AEIO-360, O-540, IO-540, TIO-540, LTIO-540, IVO-540, AEIO-540, TIO-541, and IO-720 Series Reciprocating Engines
Effective: Apr 12, 1995
Airworthiness Directives; PRECISION AIRMOTIVE (formerly Facet Aerospace Products (formerly Marvel-Schebler)) Model MA3, MA3A, MA3PA, MA3SPA, and MA4SPA Carburetors
Effective: Oct 18, 1993
TEXTRON LYCOMING Models O-320, IO-320, LIO-320, AIO-320, AEIO-320, O-340, O-360, LO-360, HO-360, VO-360, IVO-360, IO-360, AIO-360, HIO-360, LHIO-360, LIO-360, AEIO-360, TO-360, LTO-360, TIO-360, O-480, GSO-480, IGSO-480, IGO-480, GO-480, O-540 (excluding models O-540-J and O-540-L), VO-540, IO-540 (excluding model IO-540-W), HIO-540, AEIO-540, IGSO-540, IGO-540, TVO-540, TIVO-540, IVO-540, TIO-540, LTIO-540, TIO-541, TIGO-541, and IO-720 Series Engines
Effective: Jul 10, 1992
TEXTRON LYCOMING Models All Textron Lycoming Four Cylinder Piston Engines
Effective: May 28, 1991
TEXTRON LYCOMING Models O-320-A & E series, O-320-B & D series, IO-320 series, O-360 series, IO-360-B series, AEIO-360B series, O-540 series, IO-540-C4B5, IO-540-C4D5D, IO-540-D4A5, IO-540-V4A5D, IO-540-W1A5D, IO-540-W3A5D, AEIO-540-D series, TIO-540-AA1AD, TIO-540-AB1AD, O-320 series except O-320-H; AIO-320 series; AEIO-320 series; LIO-320 series; O-340 series; O-360 series except O-360-E; IO-360-B, -E, -F series; AEIO-360-B, -H series; HO-360 series; HIO-360-B series; VO-360 series; IVO-360 series; O-540 series; IO-540-C, -D, -J, -N, -R, -T, -V, -W series; AEIO-540-D series; TIO-540-C, -E, -G, -H, -K, -AA, -AB series, LTIO-540-K Engines.
Effective: Sep 1, 1989
Airworthiness Directives; FACET AEROSPACE PRODUCTS, CO (MARVEL SCHEBLER): Applicability: Facet Models MA-4-5, MA-5, and MA-6AA Carburetors
Effective: Mar 8, 1989
AVCO LYCOMING Model O-320-H, O-360-E, LO-360-E, TO-360-E and LTO-360-E Series Engines
Effective: Apr 25, 1988
Airworthiness Directives; MARVEL SCHEBLER (FACET AEROSPACE PRODUCTS COMPANY): Applies to Marvel Schebler (Facet) Model MA-3PA Carburetors
Effective: Feb 1, 1988
Airworthiness Directives; SLICK ELECTRO, INC. Magnetos
Effective: Aug 6, 1981
AVCO LYCOMING Model O-235 Series Engines
Effective: Jan 13, 1981
AVCO LYCOMING Model O-320-H, O-360-E, LO-360-E Series Engines
Effective: Jul 7, 1980
AVCO LYCOMING Model O-360-E1A6D and O-320-H2AD Series Engines
Effective: Jul 1, 1980
Airworthiness Directives; SLICK ELECTRO, INC. Models and Associated Serial And Impulse Coupling Numbers
Effective: Mar 28, 1980
AVCO LYCOMING All fuel injected Lycoming series engines
Effective: Sep 26, 1979
AVCO LYCOMING Model O-360-A1G6D and LO-360-A1G6D Engines
Effective: Jul 20, 1979
Airworthiness Directives; MARVEL-SCHEBLER/TILLOTSON: Applies to HAJ-6 Part Number 10-5243 Carburetors
Effective: Apr 25, 1979
AVCO LYCOMING Model O-320-H Series Engines
Effective: Feb 20, 1979
AVCO LYCOMING Model O-320-H2AD Series Engines
Effective: Feb 20, 1979
AVCO LYCOMING Model O-235-L2C Engines
Effective: Dec 8, 1978
AVCO LYCOMING All fuel injected Lycoming series engines
Effective: Nov 7, 1978
AVCO LYCOMING Model O-320-H Series Engines
Effective: Aug 31, 1978
AVCO LYCOMING Model O-320-H Series Engines
Effective: Jun 20, 1978
LYCOMING Model O-235, O-290, O-320, IO-320, LIO-320, O-360, IO-360, HO-360, HIO-360, VO-360-A1A, VO-360-A1B, VO-360-B1A, IVO-360-A1A, LIO-360, TIO-360, AIO-360, AEIO-360, O-540 and IO-540 Series Engines
Effective: Aug 18, 1977
AVCO LYCOMING Model O-320 Series, IO-320 Series, O-360 Series, IO & HIO-360 Series, AIO-360 Series, TIO-360 Series, LIO-360 Series, GO-480-G1D6 Series, IGSO-480-A1E6 Series, IGO-540 Series, VO-540 Series, O-540-A1C5, -A1D5, -B1A5, -B2B5, -B4B5, -B2C5, -E4A5, -E4B5, -E4C5, G1A5 Series, IO-540-A1A5, -B1A5, -C1A5, -C4B5, -D4A5, -E1A5, -E1B5, -G1D5, J4A5, -K1A5, -K1B5, -K1C5, -K1E5, -K1E5D Series, TIO-540-A2B, -A2C, -C1A, TIO-540-J2BD Series, LIO-540 Series, IGSO-540 Series, TIO-541 Series, TIGO-541 Series, IO-720-A, -B and -C Series
Effective: Jan 13, 1977
Airworthiness Directives; MARVEL-SCHEBLER: Applies to Marvel Schebler Models MA-3-A, MA-3-PA, MA-3-SPA, MA-4-SPA, MA-4-5, MA-5, MA-4-5-AA, MA-6AA, and HA-6 Carburetors
Effective: Nov 29, 1969
LYCOMING Model IO-360-A1A Engines
Effective: Jan 16, 1969
LYCOMING Model O-320 Engines
Effective: Aug 6, 1968
Airworthiness Directives; SUPERIOR FLOW: Applies to All Aircraft with Continental E185, E225, O-470, IO-470 and Lycoming O-320, O-360, and IO-360 Engines Incorporating Superior Flow Oil Filters
Effective: Jan 2, 1967
LYCOMING Model O-320, IO-320, O-340, O-360, IO-360, O-540, and IO-540 Series Engines
Effective: Aug 27, 1966
LYCOMING Model O-540-B2B5 Engines
Effective: Jul 9, 1966
LYCOMING Model O-320, O-340, O-360 and O-540 Series Engines and IO-320-B1A, IO-360-A1A, -B1B, HIO-360-B1A, -B1B and IO-540-C-B5 Engines
Effective: Jul 10, 1964
Airworthiness Directives; MARVEL-SCHEBLER: Applies to All MA4-5 Carburetors Not Having the One-Piece Combination Primary and Main Venturi
Effective: Dec 2, 1963
LYCOMING Model O-540 Series Engines and IO-540 Series Engines
Effective: Jul 6, 1963
LYCOMING Model GO, IGO, GSO and IGSO Series Engines
Effective: Nov 14, 1962
LYCOMING Model O-290-D2 Engines
LYCOMING Model GO-480-C, -G and All GSO-480 Series Engines
LYCOMING Model GO-435-C2 Engines
LYCOMING Model O-320 Engines
LYCOMING Model O-320, O-340, O-360, GO-480, GSO-480, IGSO-480 and O-540 Series Engines
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