# Lycoming LO-360-A1H6 - Type: Engine model (FAA registry) - Registry code: 42294 - Manufacturer (registry): LYCOMING - Model: LO-360-A1H6 - Engine type: Reciprocating - Power: 180 hp - Data sheet: [TCDS E-286](https://openairdocs.org/tcds/E-286) (OpenAirDocs) - Holder: Lycoming Engines - Installed in: 9 registered aircraft - Page: https://openairdocs.org/engine/lycoming-lo-360-a1h6 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 2017-16-11](https://openairdocs.org/ad/2017-16-11): Reciprocating Engine Power Section · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-360-B1G6 and 93 more. Effective Aug 15, 2017 - [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 2006-06-16](https://openairdocs.org/ad/2006-06-16): Crankshaft · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, IO-360-A1B6 and 18 more. Effective Apr 27, 2006 - [AD 2005-19-11](https://openairdocs.org/ad/2005-19-11): Crankshafts · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 59 more. Effective Oct 21, 2005 - [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 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 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 2006-20-09](https://openairdocs.org/ad/2006-20-09) (historical): Certain crankshafts replacing · Lycoming Engines AEIO-360-A1B6, AEIO-360-A1E6, AEIO-540-D4A5 and 82 more. Effective Nov 3, 2006 - [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) (5) - [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-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 (9) - [N231WU](https://openairdocs.org/aircraft/N231WU): built 2006, S/N 4496231 - [N413DP](https://openairdocs.org/aircraft/N413DP): [Yale Companies LLC DBA](https://openairdocs.org/faa-owner/YALE%20COMPANIES%20LLC%20DBA), [Fishers, IN](https://openairdocs.org/faa-place/IN/Fishers), built 2006, S/N 4496234 - [N491ND](https://openairdocs.org/aircraft/N491ND): [Christiansen Aviation LLC](https://openairdocs.org/faa-owner/CHRISTIANSEN%20AVIATION%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2006, S/N 4496236 - [N520MS](https://openairdocs.org/aircraft/N520MS): [H2 Link Co](https://openairdocs.org/faa-owner/H2%20LINK%20CO), [Chino, CA](https://openairdocs.org/faa-place/CA/Chino), built 2006, S/N 4496230 - [N582ND](https://openairdocs.org/aircraft/N582ND): [Christiansen Aviation LLC](https://openairdocs.org/faa-owner/CHRISTIANSEN%20AVIATION%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2008, S/N 4496261 - [N744A](https://openairdocs.org/aircraft/N744A): [Atp Aircraft 6 LLC](https://openairdocs.org/faa-owner/ATP%20AIRCRAFT%206%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2007, S/N 4496242 - [N883AT](https://openairdocs.org/aircraft/N883AT): [Dot Aviation LLC](https://openairdocs.org/faa-owner/DOT%20AVIATION%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2012, S/N 4496320 - [N884AT](https://openairdocs.org/aircraft/N884AT): [Dot Aviation LLC](https://openairdocs.org/faa-owner/DOT%20AVIATION%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2012, S/N 4496321 - [N910KT](https://openairdocs.org/aircraft/N910KT): [Atp Aircraft 6 LLC](https://openairdocs.org/faa-owner/ATP%20AIRCRAFT%206%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 2007, S/N 4496246 ## NTSB investigations None matched to aircraft with this engine model. ## FAA accident and incident reports (2) From the FAA Accident/Incident Data System. Reports are matched to registry aircraft by N-number and event date, checked against the reported make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [Incident 20190708009439I](https://openairdocs.org/incident/20190708009439I), Jul 8, 2019: Piper PA-44-180 (N582ND), Fort Myers, FL, No damage. On July 8, 2019, at approximately 09:17 local time, a Piper PA-44, N582ND, registered to christiansen aviation inc, veered off the left side of runway 23 at… - [Incident 20090618009759I](https://openairdocs.org/incident/20090618009759I), Jun 18, 2009: Piper PA44180 (N520MS), Ellensburg, WA, Minor damage. (-23) During a training flight with a student, instructor simulated failure of both engines in the pattern, instructing the student to accomplish an all engine… ## Service difficulty reports (95, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR 2026FA0000135](https://openairdocs.org/sdr/2026FA0000135), Jan 26, 2026: CONTROL CABLE. SHEARED. UPON TAKEOFF ROLL ON RUNWAY 33 AT X04, PILOTS WENT TO APPLY BACK PRESSURE ON THE YOKE TO BEGIN ROTATION AT 80KIAS AND REPORTED LACK OF AUTHORITY / CONTROL OF TH - [SDR 2025FA0000103](https://openairdocs.org/sdr/2025FA0000103), Feb 12, 2025: MAGNETO. CONTAMINATED. THE MAGNETO WAS FOUND TO HAVE A LARGE AMOUNT OF GREASE ON THE CAM, ENOUGH TO EASILY SLING INTO THE POINT ASSEMBLY WHICH WOULD CAUSE THE MAGNETO TO COMPLETELY FA - [SDR 2025FA0000104](https://openairdocs.org/sdr/2025FA0000104), Feb 11, 2025: MAGNETO. CONTAMINATED. THE MAGNETO WAS FOUND TO HAVE A LARGE AMOUNT OF GREASE ON THE CAM, ENOUGH TO EASILY SLING INTO THE POINT ASSEMBLY WHICH WOULD CAUSE THE MAGNETO TO COMPLETELY FA - [SDR 2025FA0000105](https://openairdocs.org/sdr/2025FA0000105), Feb 11, 2025: MAGNETO. CONTAMINATED. THE MAGNETO ROTOR SHEARED, THE MAGNETO DROPS DURING A CHECK WERE FOUND TO BE VERY HIGH. WHEN THE MAGNETO WAS REMOVED FROM THE ENGINE IT WAS FOUND THAT THE ROTOR - [SDR 2024FA0000064](https://openairdocs.org/sdr/2024FA0000064), Oct 13, 2023: RIVET. LOOSE. MAGNETO P/N 4330 S/N 20040323. LOOSE RIVETS FOUND ON IMPULSE COUPLING DURING 500 HOUR INSPECTION. REPLACED IMPULSE COUPLING WITH NEW. - [SDR 2024FA0000063](https://openairdocs.org/sdr/2024FA0000063), Oct 6, 2023: RIVET. LOOSE. MAGNETO P/N 4330 S/N 21120680. LOOSE RIVETS FOUND ON IMPULSE COUPLING DURING 500 HOUR INSPECTION. REPLACED IMPULSE COUPLING WITH NEW. - [SDR 2023FA0000193](https://openairdocs.org/sdr/2023FA0000193), Feb 7, 2023: IMPULSE COUPLING. LOOSE. ENGINE LEFT MAGNETO IMPULSE COUPLING RIVETS FOUND LOOSE, REPLACED IMPULSE COUPLING WITH NEW. - [SDR FQAR20190618009](https://openairdocs.org/sdr/FQAR20190618009), Jun 11, 2019: SNAP RING. BROKEN. DURING A SCHEDULED INSPECTION, A PIECE OF SNAP RING WAS DISCOVERED IN THE OIL DRAIN VALVE, THE OIL SUMP AND REAR CASE WERE REMOVED, THE SNAP RING THAT RETAINS T - [SDR FQAR20190529008](https://openairdocs.org/sdr/FQAR20190529008), May 29, 2019: BUSHING. CRACKED. DURING A SCHEDULED INSPECTION EVENT, BRONZE COLORED METAL CHUNKS WERE FOUND IN THE OIL FILTER, UP ON FURTHER INVESTIGATION IT WAS DISCOVERED THAT THE BUSHING (P - [SDR 2020FA0000069](https://openairdocs.org/sdr/2020FA0000069), Dec 6, 2018: CARBURETOR. LEAKING. AIRCRAFT WAS SHOPPED FOR CONTINUOUS FUEL LEAKING OVERBOARD ON RIGHT ENGINE. INSTALL DATE 8-31-2018, TT - 39.5 HOURS. O/H CARB SUPPLIED BY MARVEL/SHEBLER CARBURE - [SDR 2018FA0000424](https://openairdocs.org/sdr/2018FA0000424), Oct 16, 2018: RELIEF VALVE. OBSTRUCTED. DURING FLIGHT, FLIGHT CREW GOT A RT ENGINE LOW OIL PRESSURE WARNING AND MASTER CAUTION. CREW RETURNED AIRCRAFT IMMEDIATELY TO BASE. UPON TROUBLE SHOOTING IT WAS - [SDR 2018FA0000406](https://openairdocs.org/sdr/2018FA0000406), Oct 4, 2018: ATTACH BOLT. SEIZED. AIRCRAFT HAD NOSE GEAR UP LANDING. THROUGH INVESTIGATION THE AIRCRAFT MAINTENANCE DEPARTMENT HAS DETERMINED THAT THE INCIDENT WAS CAUSED BY THE DRAG LINK BOLT P - [SDR 2018FA0000230](https://openairdocs.org/sdr/2018FA0000230), Jul 16, 2018: FUEL NOZZLE. DIRTY. REMOVED FUEL PRIMER NOZZLES FROM ENGINE. THEY HAD NOT BEEN CLEANED IN AT LEAST 200 HOURS. CLEANED USING ULTRASONIC CLEANER AND CARBURETOR CLEANER. FOUND ONE OF - [SDR 2018FA0000217](https://openairdocs.org/sdr/2018FA0000217), Jul 12, 2018: FUEL NOZZLE. DIRTY. REMOVED FUEL PRIMER NOZZLES FROM ENGINE. THEY HAD NOT BEEN CLEANED IN AT LEAST 200 HOURS. CLEANED USING ULTRASONIC CLEANER AND CARBURETOR CLEANER. FOUND ONE OF - [SDR FQAR20170919085](https://openairdocs.org/sdr/FQAR20170919085), Sep 19, 2017: EXHAUST STACK. CRACKED. DURING A ROUTINE INSPECTION THE RIGHT ENGINE NR 2 EXHAUST STACK WAS FOUND CRACKED AT FLANGE AT CYLINDER HEAD. CRACK FOLLOWED WELD AND WAS APPROX 180° AROUND CIR - [SDR 2017FA0000255](https://openairdocs.org/sdr/2017FA0000255), Jun 20, 2017: STOP. STRIPPED. DURING ROUTINE SHEDULED MAINTENANCE, MAINTENANCE DISCOVERED THE RIGHT LOW PITCH STOP WAS STRIPPED. - [SDR 2017FA0000219](https://openairdocs.org/sdr/2017FA0000219), Apr 15, 2017: STOP. STRIPPED. DURING A ROUTINE INSPECTION, THE RIGHT PROPELLER LOW PITCH STOP WAS FOUND TO BE STRIPPED. - [SDR 2017FA0000015](https://openairdocs.org/sdr/2017FA0000015), Jan 17, 2017: CYLINDER HEAD. CRACKED. ENGINE WOULD RUN ROUGH AT ALL POWER SETTINGS. AFTER INSPECTION FOUND THE NR 3 CYLINDER ON THE RT ENGINE CRACKED FROM THE TOP SPARK PLUG HOLE EXTENDING AROUND TO - [SDR 2016FA0000542](https://openairdocs.org/sdr/2016FA0000542), Oct 26, 2016: CYLINDER. CRACKED. NR 3 CYLINDER WAS FOUND TO BE CRACKED FROM THE CYLINDER HEAD OUT TO THE SIDE OF THE CYLINDER CAUSING A LACK OF COMPRESSION. ENGINE TSO IS 1371.8 - [SDR 2016FA0000536](https://openairdocs.org/sdr/2016FA0000536), Oct 25, 2016: PUSHROD. ABNORMAL. DURING SECOND INSPECTION IAW SA-167 FOLLOWING ABNORMALITIES WERE FOUND: CYLINDER NR 3 EXHAUST PUSHROD ROCKER ARM END AND ROCKER ARM WERE ABNORMALLY WORN. CYLIND - [SDR 2016FA0000471](https://openairdocs.org/sdr/2016FA0000471), Oct 5, 2016: CYLINDER. CRACKED. DURING ROTATION OF ENGINE, MECHANIC HEARD HISSING FROM THE NR 1 CYLINDER. FURTHER INSPECTION REVEALED A CRACK ON THE INTAKE SIDE OF THE CYLINDER HEAD BELOW THE - [SDR 2016FA0000519](https://openairdocs.org/sdr/2016FA0000519), Oct 5, 2016: PUSHROD. ABNORMAL. DURING INITIAL INSPECTION, THE NR 2 CYLINDER EXHAUST PUSHROD AND ROCKER ARM WERE ABNORMALLY WORN, - [SDR 2016FA0000466](https://openairdocs.org/sdr/2016FA0000466), Oct 3, 2016: PUSHROD. WORN. DURING INSPECTION OF THE RH ENGINE PUSHRODS, THE CYLINDER NR 3 EXHAUST PUSHROD WAS FOUND TO BE EXCESSIVELY WORN ON THE ROCKER ARM SWAGED END. ENGINE TOTAL TIME - [SDR 2016FA0000525](https://openairdocs.org/sdr/2016FA0000525), Sep 30, 2016: PUSHROD. WORN. UPON INITIAL INSPECTION IAW SA-167, THE FOLLOWING ABNORMALITIES WERE DISCOVERED. CYLINDER NR 2 INTAKE PUSHROD (ROCKER ARM END) AND ROCKER ARM WERE ABNORMALLY WO - [SDR 2016FA0000465](https://openairdocs.org/sdr/2016FA0000465), Sep 29, 2016: PUSHROD. DAMAGED. DURING VISUAL INSPECTION, ROCKER ARMS OF THE LT AND RT ENGINE. THE RT ENGINE CYLINDER NR 3 EXHAUST PUSHROD SHOWED ABNORMAL WEAR AT ROCKER ARM END. ENGINE HAS 10 - [SDR L48S2016FA0000436](https://openairdocs.org/sdr/L48S2016FA0000436), Sep 14, 2016: PUSHROD. WORN. DURING CHANGE OF CYLINDERS 1, 2, 3 AND 4 IAW CUSTOMER REQUEST, EXCESSIVE WEAR OF PUSHRODS, ROCKER ARMS WERE OBSERVED. EXCESSIVE WEAR APPEARS TO BE DUE TO OIL ST - [SDR 2016FA0000420](https://openairdocs.org/sdr/2016FA0000420), Aug 30, 2016: CYLINDER. CRACKED. NR 3 CYLINDER HAD A CRACK FROM OUTSIDE OF CYLINDER THROUGH INTO COMBUSTION CHAMBER, APPROXIMATELY 2 INCHES INBOARD OF WHERE CYLINDER MEETS BARREL. NO INDICATION - [SDR 2016FA0000421](https://openairdocs.org/sdr/2016FA0000421), Aug 30, 2016: CYLINDER. CRACKED. NR 3 CYLINDER HAD A CRACK FROM OUTSIDE OF CYLINDER THROUGH INTO COMBUSTION CHAMBER, APPROXIMATELY 2 INCHES INBOARD OF WHERE CYLINDER HEAD MEETS BARREL. NO INDIC - [SDR 2016FA0000422](https://openairdocs.org/sdr/2016FA0000422), Aug 30, 2016: CYLINDER. CRACKED. NR 3 CYLINDER HAD CRACK FROM OUTSIDE OF CYLINDER THROUGH INTO COMBUSTION CHAMBER, APPROXIMATELY 2 INCHES INBOARD OF WHERE CYLINDER HEAD MEETS BARREL. NO INDICAT - [SDR 2016FA0000424](https://openairdocs.org/sdr/2016FA0000424), Aug 22, 2016: CYLINDER HEAD. CRACKED. DURING ROUTINE OIL CHANGE AND DIFFERENTIAL CYLINDER LEAK CHECK, NR 3 CYLINDER FAILED AND A HISSING NOISE WAS OBSERVED. A CRACK WAS DISCOVERED APPROXIMATELY TWO - [SDR PP4R2016FA0000434](https://openairdocs.org/sdr/PP4R2016FA0000434), Aug 4, 2016: ENGINE. DEFECTIVE. DUE TO POOR PERFORMANCE, HIGH MAGNETO DROP, ACFT WAS SENT, WO 22830 DATED 04 AUGUST 2016 FOR INSPECTION, TROUBLESHOOTING. VISUAL INSPECTION FOUND ABNORMAL WEAR - [SDR L48S2016FA0000446](https://openairdocs.org/sdr/L48S2016FA0000446), Jul 5, 2016: CYLINDER. CRACKED. DURING ANNUAL 100 HR INSPECTION, DIFFERENTIAL PRESSURE CYLINDER LEAK CHECK OF RT ENGINE, CYLINDER NR 3 FAILED, 0/80 PSI. VISUAL INSPECTION CONFIRMED A VISIBLE C - [SDR CA160212008](https://openairdocs.org/sdr/CA160212008), Feb 10, 2016: STARTER GEN. LOOSE. (CAN) DURING WORK ON AIRCRAFT THE STARTER WAS FOUND TO BE LOOSE. THE MOTOR HOUSING WHICH IS ATTACHED TO THE DRIVE BY TWO BOLTS, WAS WORKING LOOSE. THE BOLTS ARE - [SDR 2015FA0000630](https://openairdocs.org/sdr/2015FA0000630), Dec 6, 2015: MAGNETO. DEFECTIVE. DURING PRE-FLIGHT ENGINE RUN UP, PILOTS DISCOVERED EXCESSIVE MAGNETO DROP, 700+ RPM, ON RT ENGINE AND ENGINE ROUGHNESS. MAINTENANCE TECH DISCOVERED IN THE LT MA - [SDR CA150930005](https://openairdocs.org/sdr/CA150930005), Sep 28, 2015: MUFFLER. BLOCKED. (CAN) THE PILOTS REPORTED THAT THE RT ENGINE WAS RUNNING ROUGH IN CRUISE FLIGHT. MAINTENANCE FOUND THAT THE RT ENGINE FORWARD MUFFLER TAILPIPE WAS ALMOST COMPLE - [SDR 2017FA0000218](https://openairdocs.org/sdr/2017FA0000218), Sep 9, 2015: STOP. STRIPPED. DURING A ROUTINE INSPECTION, THE RIGHT PROPELLER LOW PITCH STOP WAS FOUND STRIPPED. - [SDR 2017FA0000217](https://openairdocs.org/sdr/2017FA0000217), Jun 4, 2015: STOP. STRIPPED. DURING ROUTINE INSPECTION, THE RT PROPELLER LOW PITCH STOP WAS FOUND TO BE STRIPPED. - [SDR 2015FA0000259](https://openairdocs.org/sdr/2015FA0000259), Jun 3, 2015: DISTRIBUTOR GEAR. DISLODGED. DISTRIBUTER GEAR ELECTRODE FOUND DETACHED, ENGINE WOULD NOT START FOR RUN UP. NEW DISTRIBUTER ASSY. INSTALLED IN THE LT MAGNETO ON THE LT ENGINE. - [SDR FQAR20150603067](https://openairdocs.org/sdr/FQAR20150603067), Jun 3, 2015: CYLINDER HEAD. CRACKED. BOROSCOPE INSPECTION INDICATED CRACKING IN THE RT ENGINE NR 2 CYLINDER HEAD. AFTER THE CYLINDER WAS REMOVED, CRACKS WERE OBSERVED TO THE SIDE OF THE LOWER SPARK - [SDR FQAR20150603068](https://openairdocs.org/sdr/FQAR20150603068), Jun 3, 2015: CYLINDER HEAD. CRACKED. BOROSCOPE INSPECTION INDICATED CRACKING IN THE RT ENGINE NR 3 CYLINDER HEAD. AFTER THE CYLINDER WAS REMOVED, CRACKS WERE OBSERVED TO THE SIDE OF THE LOWER SPARK - [SDR 2017FA0000216](https://openairdocs.org/sdr/2017FA0000216), Apr 14, 2015: STOP. STRIPPED. DURING A ROUTINE INSPECTION, THE RT PROPELLER LOW PITCH STOP WAS FOUND TO BE STRIPPED. - [SDR 2017FA0000210](https://openairdocs.org/sdr/2017FA0000210), Apr 5, 2015: STOP. STRIPPED. DURING A ROUTINE INSPECTION, MAINTENANCE FOUND THE RT PROPELLER LOW PITCH STOP STRIPPED. - [SDR CA150331002](https://openairdocs.org/sdr/CA150331002), Mar 18, 2015: DISTRIBUTOR GEAR. LOOSE. (CAN) DISTRIBUTOR GEAR FINGER FOUND LOOSE IN MAGNETO FOLLOWING AN ENGINE MAG CHECK THAT REVEALED A DEAD MAG. - [SDR CA150225002](https://openairdocs.org/sdr/CA150225002), Feb 25, 2015: DISTRIBUTOR GEAR. LOOSE. (CAN) MAGNETO DISTRIBUTOR GEAR FINGER FOUND LOOSE AT 500 HR INSPECTION. - [SDR OG5S2015FA0000032](https://openairdocs.org/sdr/OG5S2015FA0000032), Jan 12, 2015: DISTRIBUTOR GEAR. DETACHED. ACFT EXPERIENCED HARD STARTING ON RT ENGINE. LT MAGNETO OF RT ENGINE REMOVED AND INSPECTED. IT WAS FOUND THAT THE DISTRIBUTOR FINGER HAD BECOME LOOSE ON DISTRIB - [SDR 2015FA0000033](https://openairdocs.org/sdr/2015FA0000033), Jan 12, 2015: DISTRIBUTOR GEAR. DETACHED. AIRCRAFT EXPERIENCED HARD STARTING ON RT ENGINE. LEFT MAGNETO OF RT ENGINE REMOVED AND INSPECTED. IT WAS FOUND THAT THE DISTRIBUTOR FINGER HAD BECOME LOOSE ON D - [SDR OG5S2015FA0000034](https://openairdocs.org/sdr/OG5S2015FA0000034), Jan 12, 2015: DISTRIBUTOR GEAR. DETACHED. ACFT EXPERIENCED HARD STARTING ON RT ENGINE. LT MAGNETO OF RT ENGINE REMOVED AND INSPECTED. IT WAS FOUND THAT THE DISTRIBUTOR FINGER HAD BECOME LOOSE ON DISTRIB - [SDR OG5S2015FA0000042](https://openairdocs.org/sdr/OG5S2015FA0000042), Dec 1, 2014: DISTRIBUTOR GEAR. DETACHED. RIGHT MAGNETO, RT ENGINE OPERATED INTERMITTENTLY. REMOVED AND DISASSEMBLED. FOUND DISTRIBUTOR FINGER LOOSE ON DISTRIBUTOR GEAR. THIS IS A COMMON PROBLEM. INSTAL - [SDR CA141128005](https://openairdocs.org/sdr/CA141128005), Nov 26, 2014: BRACKET. CRACKED. (CAN) A COMPLAINT THAT THE THROTTLE AND MIXTURE CONTROLS WERE STICKING. IT WAS FOUND THAT THE BRACKET SUPPORTING THE ENGINE CONTROL CABLES IN THE QUADRANT WAS F - [SDR OG5R2015FA0000043](https://openairdocs.org/sdr/OG5R2015FA0000043), Oct 14, 2014: DISTRIBUTOR GEAR. DETACHED. AIRCRAFT HAD BAD MAGNETO DROP RIGHT ENGINE RIGHT MAGNETO. REMOVED AND DISASSEMBLED MAGNETO. FOUND DISTRIBUTOR FINGER SEPERATED FROM DISTRIBUTOR GEAR. THIS IS A All 95: https://openairdocs.org/engine/lycoming-lo-360-a1h6/reports.md ## STCs that may be installed (OpenAirDocs) (24) 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 SE2932SW](https://openairdocs.org/stc/SE2932SW): Install carburetor air temperature indicator. Approved for Aircooled Motors (Franklin Engine Co.) equipped with float carburetors. Model eligibility included here may not be inclusive. Alcor LLC. Lists LO-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 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 LO-360 Series - [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists LO-360 Series - [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 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 LO-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 LO-360 Series - [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists LO-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 LO-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 LO-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 LO-360 Series - [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec. Lists LO-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 LO-360 Series ## PMA parts (OpenAirDocs) (over 1,000, first 50) Current parts manufacturer approvals (PMA): parts the FAA has approved companies to make as replacements or modifications. Each record lists its models as free text; OpenAirDocs matched them to this engine model on its data sheet, so check the FAA record before relying on it. Newest first. - [72-231114-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID157761992320260722204351.0001): TAG-Engine. Swift Fuels, LLC · PMA PQ04423CE · Modification part · Jul 17, 2026 - [AB-160844](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100141747720251216184413.0001): Spring & Brush Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 10-160844 · Nov 10, 2025 - [OC](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178549155320250923184433.0001): Oil Cooler Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Sep 12, 2025 - [SL4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199637784520250923185920.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025 - [TXPL4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID124596913420250923185922.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025 - [HSS](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID104096221220250923185925.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Aug 4, 2025 - [AA48104-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID156575247020240813134135.0001): Oil Filter. Aero Accessories LLC · PMA PQ1206CE · Replaces Aero AccessoriesAA48104Champion… · Jul 12, 2024 - [AA48111-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID120682187320240813134136.0001): Oil Filter. Aero Accessories LLC · PMA PQ1206CE · Replaces Aero AccessoriesAA48111Champion… · Jul 12, 2024 - [ES3065](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID199581626320251216184224.0001): Machining, Rotating Magnet. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3065 · May 20, 2024 - [ES3068](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID198203854620251216184218.0001): Impulse Coupling Assy.. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3068 · May 20, 2024 - [ES3018](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194884707820251216184204.0001): Clamp, Bearing Cap. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3018 · May 20, 2024 - [AM-3021](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID194256093820251216184144.0001): Screw Distributor Block. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3021 · May 20, 2024 - [ES3221](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189601053820251216184228.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3221 · May 20, 2024 - [AK-3975](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID181109606820251216184201.0001): Coil, Ignition. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3009, M3114, M3525, K3975, K3975 · May 20, 2024 - [AM-3015](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID180990573320251216184149.0001): Screw, Housing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3015 · May 20, 2024 - [AM-3006](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID178460806720251216184151.0001): Bearing. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3006 · May 20, 2024 - [AM2536](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175576430320251216184152.0001): Woodruff Key. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M2536 · May 20, 2024 - [ES3040](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID175045989620251216184205.0001): Coil Wedge. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3040 · May 20, 2024 - [ES917](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID170587168620251216184202.0001): Impulse Coupling Spring. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M917 · May 20, 2024 - [AK-3984](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID168254730520251216184200.0001): Capacitor. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3183, K3984 · May 20, 2024 - [AM-2556](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164604517920251216184155.0001): Cotter Pin. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M2556 · May 20, 2024 - [AM-3062](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID155261831320251216184153.0001): Oil Seal. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3062 · May 20, 2024 - [ES3084](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152458666320251216184211.0001): Air Vent With Hood. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3084 · May 20, 2024 - [AM-3217](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID152412216720251216184157.0001): Wave Spring Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M-3217 · May 20, 2024 - [AM-3485](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151878274520251216184156.0001): Bearing Cap, Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3485 · May 20, 2024 - [AM-3215](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151335825620251216184148.0001): Brush Assy, Distributor. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3215 · May 20, 2024 - [AM-3020](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID134367835920251216184146.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3020 · May 20, 2024 - [ES3822](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID133744562220251216184220.0001): Dist. Block & Gear Assy.. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces K3822 · May 20, 2024 - [ES1077](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID132381862220251216184212.0001): Air Vent. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M1077 · May 20, 2024 - [AM3611](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID125128266220251216184158.0001): Cam. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3611, M1522 · May 20, 2024 - [ES3827](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID113316784520251216184222.0001): Rotor Gear. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces K3827 · May 20, 2024 - [ES3826](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID112237278720251216184206.0001): Spacer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3826 · May 20, 2024 - [ES3172](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103914286320251216184209.0001): Washer. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3172 · May 20, 2024 - [A-13081K](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID103306043420251216184147.0001): Contact Assembly. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3081 · May 20, 2024 - [ES3019](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID100047104220251216184208.0001): Nut. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M3019 · May 20, 2024 - [ES10-35936-7](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID191691087420251216184428.0001): Screw. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces Continental 10-35936-7 · Dec 8, 2023 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID189210274620240301172642.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023 - [ES2638-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID184658654720240301172644.0001): Magneto Adapter. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW-12706, M2638-4 · Dec 1, 2023 - [ES62224](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171846461520240301172643.0001): Gasket. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 62224, M3410, SL62224 · Dec 1, 2023 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID169748273120240301172659.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023 - [ES3413](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID164408705320240301172644.0001): Stud. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces 31C-19, M3413 · Dec 1, 2023 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID151377837420240301172622.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023 - [ES12681](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID143043735220240301172643.0001): Gasket. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces LW12681 · Dec 1, 2023 - [KA14005](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID122887359020240301172635.0001): Harness. Hartzell Engine Technologies LLC · PMA PQ1383CE · Replaces M4005 · Dec 1, 2023 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID122172067820240301172627.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Dec 1, 2023 - [No part number](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID185668804520240301172623.0001): Hartzell Engine Technologies LLC · PMA PQ1383CE · Nov 9, 2023 - [TA2925-1](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID193237775520231109132301.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Oct 30, 2023 - [TA2925-2](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID176004176820231109132302.0001): Engine Preheat Kit. Hartzell Propeller LLC · PMA PQ2040CE · Modification part · Oct 30, 2023 - [ES10-400549-4](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID171063566420230929175040.0001): 200 Series Frame, Lyc Flange. Kelly Aerospace Energy Systems LLC · PMA PQ4176CE · Replaces 10-400549-4 · Jul 17, 2023 - [FFT-PLG-001](https://drs.faa.gov/browse/excelExternalWindow/DRSDOCID161733504820230717173112.0001): Cam End Plug. Centri-Lube Technologies LLC · PMA PQ2043NM · Modification part · Jul 7, 2023 All of them: https://openairdocs.org/engine/lycoming-lo-360-a1h6/pma.md --- 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.