AD 2026-04-11
PossibleAirworthiness Directives; Lycoming Engines
Effective: Apr 8, 2026
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Evaluated 14 candidate ADs: 0 confirmed, 14 possible, 0 excluded.
Airworthiness Directives; Lycoming Engines
Effective: Apr 8, 2026
Airworthiness Directives; Lycoming Engines
Effective: Dec 5, 2024
Airworthiness Directives; Lycoming Engines Reciprocating Engines
Effective: Mar 27, 2012
Airworthiness Directives; Lycoming Engines (Formerly Textron Lycoming), Direct-Drive Reciprocating Engines; Correction
Effective: Jun 28, 2004
Airworthiness Directives; Avco Lycoming and Textron Lycoming Reciprocating Engines
Effective: Aug 12, 1997
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
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 VO and TVO-435 and VO, IVO, TVO and TIVO-540 Series Engines
Effective: Aug 18, 1980
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
AVCO LYCOMING Model VO-540, IVO-540, TVO-540, TIVO-540 Series Engines
Effective: Jul 9, 1974
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 VO, IVO-360 Series: VO, TVO-435 Series Engines; IGSO-480 Series Engines; VO, IVO, TIVO-540 Series Engines
Effective: May 19, 1968
LYCOMING Model VO-540 Series Engines
Effective: Feb 27, 1962
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