# Lycoming O-360-A1G - Type: Engine model (FAA registry) - Registry code: 42254 - Manufacturer (registry): LYCOMING - Model: O-360-A1G - Engine type: Reciprocating - Power: 180 hp - Data sheet: [TCDS E-286](https://openairdocs.org/tcds/E-286) (OpenAirDocs) - Holder: Lycoming Engines - Installed in: 1 registered aircraft - Page: https://openairdocs.org/engine/lycoming-o-360-a1g Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026 - [AD 2022-16-03](https://openairdocs.org/ad/2022-16-03): Engine (RECIPROCATING) · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 236 more. Effective Aug 15, 2022 - [AD 2012-19-01](https://openairdocs.org/ad/2012-19-01): Crankshafts · Lycoming Engines AEIO-360-A1A, AEIO-360-A1B, AEIO-360-A1B6 and 321 more. Effective Oct 24, 2012 - [AD 2012-03-07](https://openairdocs.org/ad/2012-03-07): Carburetor · Lycoming Engines GO-435, GO-435-C2 (O-435-17), GO-435-C2A and 389 more. Effective Mar 27, 2012 - [AD 2009-26-12](https://openairdocs.org/ad/2009-26-12): Cylinder assemblies · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 264 more. Effective Feb 4, 2010 - [AD 2007-04-19 R1](https://openairdocs.org/ad/2007-04-19-R1): SAP cylinder assemblies · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 314 more. Effective May 7, 2007 - [AD 2006-12-07](https://openairdocs.org/ad/2006-12-07): ECi cylinder assemblies · Aerostar AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 386 more. Effective Jul 11, 2006 - [AD 2006-10-21](https://openairdocs.org/ad/2006-10-21): ECi connecting rods · Engine Components Reciprocating Engine Connecting Rods, AEIO-360-B1B, AEIO-360-B1D and 171 more. Effective Jun 22, 2006 - [AD 2004-10-14](https://openairdocs.org/ad/2004-10-14): Crankshaft gear · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 642 more. Effective Jun 25, 2004 - [AD 98-02-08](https://openairdocs.org/ad/98-02-08): Crankshaft · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 216 more. Effective Mar 30, 1998 - [AD 97-15-11](https://openairdocs.org/ad/97-15-11): Cylinder kits · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 538 more. Effective Aug 12, 1997 - [AD 96-09-10](https://openairdocs.org/ad/96-09-10): Oil pump · Lycoming Engines AEIO-320-E1A, AEIO-320-E1B, AEIO-320-E2A and 334 more. Effective Jul 15, 1996 - [AD 95-26-02](https://openairdocs.org/ad/95-26-02): Aviation Gasoline · Lycoming Engines IO-320-B1A, IO-320-B1B, IO-320-B1C and 182 more. Effective Jan 24, 1996 - [AD 92-12-05](https://openairdocs.org/ad/92-12-05): Piston Pins · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 532 more. Effective Jul 10, 1992 - [AD 90-04-06 R1](https://openairdocs.org/ad/90-04-06-R1): Propeller Governor External Oil Line · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 427 more. Effective May 28, 1991 - [AD 87-10-06 R1](https://openairdocs.org/ad/87-10-06-R1): Rocker Arm Assembly · Lycoming Engines IO-360-B4, IVO-360-A1A, O-340-A1A and 243 more. Effective Sep 1, 1989 - [AD 89-04-02](https://openairdocs.org/ad/89-04-02): Carburetors · Continental Motors O-470-11, O-470-11-CI, O-470-11B and 175 more. Effective Mar 8, 1989 - [AD 80-06-05](https://openairdocs.org/ad/80-06-05): Magnetos · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 254 more. Effective Mar 28, 1980 - [AD 75-08-09](https://openairdocs.org/ad/75-08-09): Oil Pump Drive Shaft · Lycoming Engines AEIO-360-A1B, AEIO-360-A1B6, AEIO-360-A1C and 365 more. Effective Aug 18, 1977 - [AD 73-23-01](https://openairdocs.org/ad/73-23-01): Piston Pin Assembly · Lycoming Engines AIO-360-A1A, AIO-360-A1B, AIO-360-A2A and 215 more. Effective Jan 13, 1977 - [AD 69-24-03](https://openairdocs.org/ad/69-24-03): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 321 more. Effective Nov 29, 1969 - [AD 67-01-04](https://openairdocs.org/ad/67-01-04): Oil Filters · Full flow oil filter (Superior Flow STC SA401SW or 2 others). Effective Jan 2, 1967 - [AD 63-22-03](https://openairdocs.org/ad/63-22-03): Carburetors · Continental Motors GO-300-A, GO-300-B, GO-300-C and 143 more. Effective Dec 2, 1963 Historical (superseded or no longer in force): - [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 548 more. Effective Dec 5, 2024 - [AD 2008-19-05](https://openairdocs.org/ad/2008-19-05) (historical): Parallel Valve'' reciprocating engines · Engine Components Reciprocating Engine Cylinder Assemblies, AEIO-320-D1B, AEIO-320-D2B and 262 more. Effective Oct 20, 2008 - [AD 2005-26-10](https://openairdocs.org/ad/2005-26-10) (historical): ECi cylinder assemblies. · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 413 more. Effective Jan 31, 2006 - [AD 81-18-04 R2](https://openairdocs.org/ad/81-18-04-R2) (historical): Engine Oil Pump Driven Impeller and Shaft · Textron Lycoming, AVCO AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 376 more. Effective Jun 7, 1982 ## Information bulletins (advisory) (6) - [SAIB NE-19-08](https://openairdocs.org/saib/NE-19-08): Reciprocating Engine Cylinder Section - Lycoming Engines Parallel Valve Cylinders. Issued May 2, 2019 - [SAIB NE-08-32R1](https://openairdocs.org/saib/NE-08-32R1): Propeller Governor Idler Gear Shaft Set Screw. Issued May 13, 2016 - [SAIB NE-14-13](https://openairdocs.org/saib/NE-14-13): Reciprocating Engine - Cylinder Mounting Studs. Issued Mar 24, 2014 - [SAIB NE-13-06](https://openairdocs.org/saib/NE-13-06): Pushrod Shroud Spring Retainers, Engine Components Part No. AEL14995, for Lycoming Engines 320, 360, and 540 Series Engines. Issued Nov 21, 2012 - [SAIB NE-06-32R1](https://openairdocs.org/saib/NE-06-32R1): Reciprocating Engine - Crankshaft. Issued Sep 10, 2008 - [SAIB NE-08-32](https://openairdocs.org/saib/NE-08-32) (historical): Propeller Governor Set Screw. Issued Jul 3, 2008 ## Registered aircraft (1) - [N105MR](https://openairdocs.org/aircraft/N105MR): [Payne Craig W](https://openairdocs.org/faa-owner/PAYNE%20CRAIG%20W), [Plant City, FL](https://openairdocs.org/faa-place/FL/Plant%20City), built 1971, S/N 138 ## NTSB investigations None matched to aircraft with this engine model. ## FAA accident and incident reports None matched to aircraft with this engine model. ## Service difficulty reports (16) As reported by operators and repair stations, by the model named in the report. - [SDR AU510001510](https://openairdocs.org/sdr/AU510001510), Dec 12, 2005: BRACKET. CRACKED. RT ENGINE FIREWALL BRACKET CRACKED ON BOTH SIDES OF ANCHOR NUT. FOUND DURING INSPECTION IAW AD/BEECH76/10-2. - [SDR AU510002074](https://openairdocs.org/sdr/AU510002074), Dec 12, 2005: POINTS. UNSERVICEABLE. RT MAGNETO CONTACT BREAKER POINT LOOSE ON SPRING ASSEMBLY. CONTACTS HAD BEEN REPLACED APPROXIMATELY 13 HOURS PREVIOUSLY. SUSPECT BREAKER INCORRECTLY SWAGED ONTO - [SDR AU510001633](https://openairdocs.org/sdr/AU510001633), Jan 7, 2005: LINE. CHAFED. ENGINE FUEL LINE CHAFED AND WORN BY THROTTLE CABLE. LOSS OF APPROXIMATELY 5 GALLONS OF FUEL. THROTTLE CABLE HAD BEEN RECENTLY REPLACED. - [SDR AUS20040064](https://openairdocs.org/sdr/AUS20040064), Feb 3, 2004: CONNECTOR. CONTAMINATED. (AUS) RT ENGINE INSTRUMENT CLUSTER CONNECTOR CONTAMINATED. - [SDR 2003FA0000861](https://openairdocs.org/sdr/2003FA0000861), Aug 18, 2003: DIPSTICK. CHAFED. OIL LEVEL INDICATOR (DIP STICK) ROD BECAME LOOSE IN HOUSING (THREADED CAP) THAT HOLDS ROD IN PLACE. THIS OCCURED WHERE ROD FITS INTO SCREW-IN PART OF DIP STICK - [SDR AUS20030550](https://openairdocs.org/sdr/AUS20030550), May 15, 2003: HEATER. MISWIRED. (AUS) HEATER INCORRECTLY WIRED. INVESTIGATION FOUND THAT THE OVERHEAT CUTOUT AND COMBUSTION PRESSURE SWITCH HAD NOT BEEN WIRED UP. THIS ALLOWED THE HEATER TO SO - [SDR 20000516SH016](https://openairdocs.org/sdr/20000516SH016), Apr 20, 2000: BUSHING. OVERSIZED. A MAGNETO NEWLY OVERHAULED, WOULD NOT SEAT ON THE ENGINE. FOUND THE BUSHING WHICH CAME INSTALLED ON THE MAGNETO WAS TOO LARGE IN DIAMETER TO CENTER THE BORE OF - [SDR CA991208083](https://openairdocs.org/sdr/CA991208083), Nov 28, 1999: ROD END. FAILED. (CAN) IN CRUISE, RT MAIN GEAR EXTENDED AND LOCKED DOWN. THE LEFT MAIN AND NOSE GEARS WERE LOWERED AND THE LANDING WAS COMPLETED WITHOUT EVENT. THE RIGHT ACTUATO - [SDR CA991007067](https://openairdocs.org/sdr/CA991007067), Sep 30, 1999: MOTOR. DAMAGED. (CAN) GEAR WOULD NOT EXTEND TO DOWN AND LOCKED WHEN SELECTED. HAD TO USE EMERGENCY EXTENSION. UPON INVESTIGATION, HYDRAULIC POWER PACK ELECTRIC MOTOR ARMATURE W - [SDR CA990812003](https://openairdocs.org/sdr/CA990812003), Aug 4, 1999: CAPACITOR. FAILED. (CAN) MAGNETO CAPACITOR FAILED CAUSING EXCESSIVE MAGNETO DROP WHEN TESTED. - [SDR AU990734](https://openairdocs.org/sdr/AU990734), Apr 23, 1999: BEARING. SPALLED. (AUS) NR 2 AND NR 3 CYLINDER CONNECTING ROD BIG END BEARINGS SPALLED. SUSPECT CAUSED BY PARTIAL BREAK-UP OF HYDRAULIC TAPPET. METAL CONTAMINATION OF ENGINE OIL - [SDR CA990119016](https://openairdocs.org/sdr/CA990119016), Jan 4, 1999: CRANKCASE. CRACKED. (CAN) ON A SCHEDULED ON CONDITION INSPECTION, A CRACK WAS FOUND AT THE NR 2 CYLINDER HOLD DOWN STUD. - [SDR AU980568](https://openairdocs.org/sdr/AU980568), May 27, 1998: SPRING. BROKEN. (AUS) LT ENGINE, NR 2 CYLINDER INLET VALVE PUSHROD SHROUD TUBE RETAINING SPRING BROKEN IN HALF AND LYING IN THE BOTTOM OF THE ROCKER BOX. - [SDR AU971522](https://openairdocs.org/sdr/AU971522), Dec 3, 1997: SPRING. BROKEN. (AUS) RH ENGINE MAGNETO IMPULSE COUPLING SPRING BROKEN. - [SDR AU970681](https://openairdocs.org/sdr/AU970681), Jun 8, 1997: DISTRIBUTOR. STRIPPED. (AUS) MAGNETO PLASTIC DISTRIBUTOR GEAR TEETH STRIPPED - [SDR AU960072](https://openairdocs.org/sdr/AU960072), Jan 22, 1996: PIN. FRACTURED. (AUS) ENGINE NO1 PISTON PIN FRACTURED IN CENTRE CAUSING PISTON PIN BOSSTO BREAK EVENLY ON BOTH SIDES OF PISTON - DURING THE 100 HOURLYINSPECTION THE OIL PRESSUR ## STCs that may be installed (OpenAirDocs) (37) Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SE04651CH](https://openairdocs.org/stc/SE04651CH): To allow use of l00R grade aviation fuel meeting Swift Fuel, LLC specification SPEC-l00R-22. Swift Fuels LLC - [STC SE00825WI](https://openairdocs.org/stc/SE00825WI): Installation of Specialty Products Spin-on oil filter on Lycoming Engines. B & C Specialty Products Inc - [STC SE208SO](https://openairdocs.org/stc/SE208SO): Installation of ice indicator in the carburetor. LegacySTC.com. Lists O-360 Series - [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd - [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal. Ly-Con Rebuilding Company - [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc - [STC SE00939WI](https://openairdocs.org/stc/SE00939WI): Installation of B&C Specialty Products Model BC 315-( ) Starter on Lycoming engines. B & C Specialty Products Inc - [STC SE2390CE](https://openairdocs.org/stc/SE2390CE): Installation of B & C Speciality Products. B & C Specialty Products Inc. Lists O-360 Series - [STC SE03232CH](https://openairdocs.org/stc/SE03232CH): Installation of Engine Preheat Kit p/n TA2925-1 for 115 volt application. Hartzell Propeller Inc - [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp - [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc - [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts. Continental Motors, Inc. Lists O-360 Series - [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists O-360 Series - [STC SE00218NY](https://openairdocs.org/stc/SE00218NY): Replacement of Lycoming starter with SKY-TEC 12 volt starter installed. Hartzell Engine Technologies, LLC. Lists O-360 Series - [STC SE00226NY](https://openairdocs.org/stc/SE00226NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter Models 149-24HT and 122-24HT. Approval limited to 24-volt DC source available to the starter. Hartzell Engine Technologies, LLC - [STC SE00357NY](https://openairdocs.org/stc/SE00357NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter installed. Hartzell Engine Technologies, LLC. Lists O-360 Series - [STC SE2901NM](https://openairdocs.org/stc/SE2901NM): Lycoming valve cover gasket. Real Gaskets Tennessee - [STC SE02291AT](https://openairdocs.org/stc/SE02291AT): Conversion of the engine from a carburetor fuel system and magneto ignition system to a full authority digital electronic control (FADEC) system for fuel injection and ignition. Continental Motors, Inc - [STC SE01524CH](https://openairdocs.org/stc/SE01524CH): Replace Slick 6000, 6100, 6200, 6300, 4000, 4100, 4200, and 4300 series magnetos and TCM/Bendix S6-20, S6-200, S6-1200, S-20, S-200, and S-1200 series magnetos with Champion Limited Authority Spark Advance Regulator (LASAR ) Model 4755 and 6755 bush kit ignition systems. Champion Aerospace LLC - [STC SE1017GL](https://openairdocs.org/stc/SE1017GL): Removal of the Type certificated Bendix magnetos and ignition harnesses followed by the installation of Slick magneto Models 4250 and 4251 with Slick ignition harnesses. Champion Aerospace LLC - [STC SE524CH](https://openairdocs.org/stc/SE524CH): Replace Slick 4000, 4100, 4200, and 4300 series magnetos and TCM/Bendix S-20, S-200, and S-1200 series magnetos with the Champion Limited Authority Spark Advance Regulator (LASAR ). Champion Aerospace LLC - [STC SE8193SW](https://openairdocs.org/stc/SE8193SW): Grind nitriden high compression cylinder barrles to plus .010 oversize and install SL75089 P10 piston, SL74242 P10 compression ring, and SL73857 P10 oil ring. Superior Air Parts Inc - [STC SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc - [STC SE5743NM](https://openairdocs.org/stc/SE5743NM): Intallation of adapter for externally mounted oil filter. Aviation Development Corporation - [STC SE00889LA](https://openairdocs.org/stc/SE00889LA): Installation of Nickson's cylinder barrels on Lycoming reciprocating engine models. Nickson's Machine Shop Inc - [STC SE2563CE](https://openairdocs.org/stc/SE2563CE): Leaded and unleaded automotive gasoline, 91 minimum antiknock index (RON+MON) /2 per ASTM spec D-439. Intermixing with aviation gasoline also approved. Petersen Aviation Inc - [STC SE1-201](https://openairdocs.org/stc/SE1-201): Installation of the Richter Aero Equipment Type B-4 or B-5 Temperature Probe. (O-360 SERIES (excl. A1C, C2B, C2D)). MidContinent Instru Co Inc. Lists O-360 Series - [STC SE09492SC](https://openairdocs.org/stc/SE09492SC): Installation and usage of Exxon 20W50 multigrade aircraft engine oil conforming to Exxon Oil formulation WS-3013. Exxon Company USA. Lists O-360 Series - [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation - [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co. Lists O-360 Series - [STC SE370NE](https://openairdocs.org/stc/SE370NE): Installation of 'Auto-Vac 2' auxiliary vacuum system. Raymond Ives - [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists O-360 Series - [STC SE5879SW](https://openairdocs.org/stc/SE5879SW): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP. Phillips Petroleum Co. Lists O-360 Series - [STC SE5924SW](https://openairdocs.org/stc/SE5924SW): Installation of stainless steel replacement exhaust studs on AVCO engines. Perrigo & Steele Aircraft Engr Company. Lists O-360 Series - [STC SE244NE](https://openairdocs.org/stc/SE244NE): Installation of Mattituck plasma flame sprayed cylinder barrels in Teledyne reciprocating engines. Mattituck Airbase, Inc. Lists O-360 Series - [STC SE80NE](https://openairdocs.org/stc/SE80NE): Installation and usage of Bel-Ray synthetic aviation oil, Bel-Ray Aero 1, (nonsupercharged), horizontally opposed direct drive, aircraft engines of 350 hp. or less. Bel-Ray Company, Inc. Lists O-360 Series - [STC SE128NE](https://openairdocs.org/stc/SE128NE): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines. AMS/OIL. Lists O-360 Series --- OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.