# Lycoming HO-360-C1A - Type: Engine model (FAA registry) - Registry code: 42318 - Manufacturer (registry): LYCOMING - Model: HO-360-C1A - Engine type: Reciprocating - Power: 180 hp - Data sheet: [TCDS E-286](https://openairdocs.org/tcds/E-286) (OpenAirDocs) - Holder: Lycoming Engines - Installed in: 2 registered aircraft - Page: https://openairdocs.org/engine/lycoming-ho-360-c1a 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 2012-03-07](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 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 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 Effective Jul 10, 1992 Historical (superseded or no longer in force): - [AD 2024-21-02](https://openairdocs.org/ad/2024-21-02) (historical): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and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) (3) - [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-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 ## Registered aircraft (2) - [N504JN](https://openairdocs.org/aircraft/N504JN): [Polarblast LLC](https://openairdocs.org/faa-owner/POLARBLAST%20LLC), [Bellefonte, PA](https://openairdocs.org/faa-place/PA/Bellefonte), built 2000, S/N 0112 - [N9013K](https://openairdocs.org/aircraft/N9013K): [Simpson Craig S](https://openairdocs.org/faa-owner/SIMPSON%20CRAIG%20S), [Nikiski, AK](https://openairdocs.org/faa-place/AK/Nikiski), built 2015, S/N JA1209071 ## NTSB investigations (1) From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model. - [NTSB ERA25LA044](https://openairdocs.org/ntsb/ERA25LA044), Nov 10, 2024: Schweizer 269C-1 (N504JN), Boalsburg, PA, substantial damage. Probable cause: A loss of engine power for reasons that could not be determined. ## FAA accident and incident reports (1) 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. - [Accident 20241109019919A](https://openairdocs.org/incident/20241109019919A), Nov 9, 2024: Schweizer 269C-1 (N504JN), Boalsburg, PA, Substantial damage. Pilot departed home location enroute to kunv FBO with all instruments in the green. The pilot picked up a passenger with a destination at krvl. Departure was… ## Service difficulty reports (56, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR CA141023007](https://openairdocs.org/sdr/CA141023007), Oct 6, 2014: BEARING. MAKING METAL. (CAN) THE ROTOR SYS WAS FOUND TO BE INCREASING IN VIBRATION. CHECKED THROUGH THE SYSTEM AND FOUND THE BEARINGS WHEN PURGED OF GREASE WERE SHOWING FINE METAL PAR - [SDR CA091206004](https://openairdocs.org/sdr/CA091206004), Nov 23, 2009: BEARING. CRACKED. (CAN) INNER RACE OF FLAPPING HINGE BRG FOUND CRACKED HALF WAY THROUGH ON ANNUAL INSP. - [SDR 2007FA0000667](https://openairdocs.org/sdr/2007FA0000667), Jul 26, 2007: CYLINDER HEAD. SEPARATED. NR 2 CYLINDER HEAD SEPARATED FROM CYLINDER BARREL IN FLIGHT. - [SDR 2007FA0000677](https://openairdocs.org/sdr/2007FA0000677), Jul 15, 2007: CYLINDER HEAD. SEPARATED. 2 NR CYLINDER HEAD ASSEMBLY APPEARS TO HAVE FAILED DURING FLIGHT RESULTING IN A SEVERE ENGINE VIBRATION AND A FORCED LANDING. EXAMINATION OF UPPER HALF OF FAILE - [SDR CA070612004](https://openairdocs.org/sdr/CA070612004), Jun 12, 2007: DRIVE BELT. SPLIT. (CAN) DRIVE BELT AXIAL SPLIT OVER 50 PERCENT OF BELT CIRCUMFERENCE; SPLIT OCCURS UNDER OUTER LAYER OF BELT. NOTE: PLEASE ADVISE IF PHYSICAL VERIFICATION IS REQU - [SDR CA070515006](https://openairdocs.org/sdr/CA070515006), May 1, 2007: BRACKET. BROKEN. (CAN) ALTERNATOR BRACKET BROKEN. REPLACED BRACKET WITH NEW PART PN LW10382. (TC NR 20070515006) - [SDR CA060224006](https://openairdocs.org/sdr/CA060224006), Feb 15, 2006: ADAPTER. BROKEN. DURING 25 HOUR INSPECTION, OIL WAS DRAINED FROM ENGINE AND FOUND BEARING CAGE BALL RETAINER MADE OF PLASTIC (KIND OF) ON ENGINE OIL SCREEN. REMOVED BOTH MAGNETO - [SDR CA060306013](https://openairdocs.org/sdr/CA060306013), Jan 13, 2006: STARTER. FAILED. (CAN) STARTER NOT OPERATING. REPLACED STARTER. (TC NR 20060306013) - [SDR CA060306007](https://openairdocs.org/sdr/CA060306007), Jan 10, 2006: MAGNETO. FAILED. (CAN) AIRCRAFT HARD TO START AND 125 DROOP. REPLACED LT MAGNETO. (TC NR 20060306007) - [SDR CA060213005](https://openairdocs.org/sdr/CA060213005), Dec 20, 2005: BEARING. BROKEN. (CAN) SMALL METAL FRAGMENT DISCOVERED WHILE CHANGING ENGINE OIL. FOUND TO BE PART OF A BEARING KEEPER IN RT MAGNETO ADAPTER BEARINGS. THIS IS THE SECOND TIME TH - [SDR CA060306012](https://openairdocs.org/sdr/CA060306012), Nov 18, 2005: BRACKET. CRACKED. (CAN) BRACKET CRACKED. REPLACED BRACKET. (TC NR 20060306012) - [SDR CA051206006](https://openairdocs.org/sdr/CA051206006), Nov 1, 2005: CRANKSHAFT. CRACKED. ENGINE WAS IN FOR OVERHAUL. CRACK FOUND IN CRANKSHAFT WITH MPI. NO RECORD OF BLADE STRIKE. - [SDR CA051007004](https://openairdocs.org/sdr/CA051007004), Sep 28, 2005: CARBURETOR. FAILED. (CAN) AIRCRAFT HAVE LOW POWER IN FLIGHT. REPLACED CARBURATOR. - [SDR CA051003015](https://openairdocs.org/sdr/CA051003015), Sep 22, 2005: TUBE. CRACKED. (CAN) 1) TUBE ASSEMBLY IS CRACKED ON THE MAST SIDE. 2) REPLACED TUBE ASSEMBLY, P/N 269A2172-5. - [SDR 2005FA0000888](https://openairdocs.org/sdr/2005FA0000888), Jun 20, 2005: CYLINDER. CRACKED. DURING 100HR COMPRESSION CHECK, AIR WAS FOUND TO BE LEAKING AROUND TOP SPARK PLUG AREA. FURTHER INSPECTION NOTED CRACK ALONG TOP COOLING FIN AREA. UPON REMOVING - [SDR 2005FA0000889](https://openairdocs.org/sdr/2005FA0000889), Jun 20, 2005: CYLINDER. CRACKED. DURING 100HR COMPRESSION CHECK, AIR WAS FOUND TO BE LEAKING AROUND TOP SPARK PLUG AREA. FURTHER INSPECTION NOTED CRACK ALONG TOP COOLING FIN AREA. UPON REMOVING - [SDR CA050208007](https://openairdocs.org/sdr/CA050208007), Feb 8, 2005: PUMP. LOOSE. (CAN) DURING INSPECTION, FUEL WETNESS WAS DISCOVERED ON THE BOTTOM OF THE FUEL PUMP. UPON FURTHER INSP ALL OF THE DIAPHRAGM RETENTION BOLTS WERE FOUND TO BE LOO - [SDR CA041102002](https://openairdocs.org/sdr/CA041102002), Nov 2, 2004: CARRIAGE. CRACKED. DURING A SCHEDULED 4200 HR O/H THE ABOVE DESCRIBED CARRIER WAS FOUND TO HAVE 3 CRACKS AT 3 SEPARATE LOCATIONS IN THE CARRIER TO COUPLING MOUNTING HOLE LOCATIONS - [SDR CA041013009](https://openairdocs.org/sdr/CA041013009), Oct 7, 2004: SWITCH. MALFUNCTIONED. (CAN)TRIGGER SWITCH MALFUNCTION, NO TRANSMISSION. REPLACED SWITCH P/N M8805/111-04. - [SDR CA041006001](https://openairdocs.org/sdr/CA041006001), Sep 28, 2004: TRIM SWITCH. STICKS. (CAN) TRIM SWITCH STICKS WHEN PULLED FOR REAR ACTIVATION. REPLACED SWITCH. - [SDR CA040706002](https://openairdocs.org/sdr/CA040706002), Jun 1, 2004: CARBURETOR. FAILED. HIGH MANIFOLD PRESSURE. REPLACED CARBURETOR. - [SDR CA040427013](https://openairdocs.org/sdr/CA040427013), Mar 12, 2004: SHAFT. BROKEN. (CAN) BEARING SIZE DUE TO LACK OF LUBRICATION. DUE TO INCORRECT INSTALLATION AT REPAIR. - [SDR CA040127017](https://openairdocs.org/sdr/CA040127017), Jan 5, 2004: NUT. LOOSE. (CAN) OIL LEAKING FROM FREEWHEEL WAS NOTED AT REFUELING STOP. NUT (WHICH IS ALSO SEAL RUNNER) WAS FOUND LOOSE. NUT WAS RETORQUED AND FLUSH OF FREEWHEEL PRODUCED - [SDR CA030129003](https://openairdocs.org/sdr/CA030129003), Jan 13, 2003: CAMSHAFT. DAMAGED. (CAN) THE ENGINE HAD 6 HOURS TTSO. THE PILOTS NOTICED AN ENGINE VIBRATION, AND STARTING WAS BECOMING EVER MORE DIFFICULT. THE AME THEN PROCEEDED IN REPLACING TH - [SDR CA030103004](https://openairdocs.org/sdr/CA030103004), Nov 5, 2002: INTAKE VALVE. LEAKING. (CAN) BASE LINE DIFFERENTIAL CHECK OF NEW AIRCRAFT REVEALED LEAKING NR 4 CYLINDER INTAKE VALVE. CYLINDER REMOVED AND REPAIRED. - [SDR CA030103002](https://openairdocs.org/sdr/CA030103002), Oct 30, 2002: CONTROL UNIT. FAILED. (CAN) PILOT REPORTED DURING HOVER, THE TAXI LOW ROTOR WARNING ACTIVATED BUT ROTOR RPM WAS IN PROPER AREA OF GREEN ARC ON DUAL TACH. DURING SHUTDOWN, SWITCHING B - [SDR CA021031016](https://openairdocs.org/sdr/CA021031016), Sep 26, 2002: BRACKET. CRACKED. (CAN) ALTERNATOR BRACKET BROKEN. REPLACED BRACKET. - [SDR CA021031014](https://openairdocs.org/sdr/CA021031014), Sep 24, 2002: BEARING. WORN. (CAN) BEARING ON CARBURETOR LOOSE IN THROTTLE. REPLACED BEARING. - [SDR CA021031010](https://openairdocs.org/sdr/CA021031010), Sep 23, 2002: CAMSHAFT. FAILED. (CAN) ENGINE RUNS UNEVEN. FOUND METAL DEPOSITS IN OIL FILTER. ENGINE REMOVED AND SENT FOR INSPECTION/REPAIR. - [SDR 2002FA0001001](https://openairdocs.org/sdr/2002FA0001001), Aug 8, 2002: PLUG. MISSING. SCHEDULED INSPECTION AND MAINTENANCE, WHILE PERFORMING A COMPRESSION CHECK, IT WAS NOTED THAT THE ENGINE TURNING TOOL WENT INTO THE LOWER PULLEY DRIVE SPLINE FA - [SDR CA021031013](https://openairdocs.org/sdr/CA021031013), Aug 5, 2002: ALTERNATOR. FAILED. (CAN) ALTERNATOR LOW VOLTAGE. REPLACED ALTERNATOR. - [SDR CA021031011](https://openairdocs.org/sdr/CA021031011), Jul 30, 2002: INDICATOR. FAILED. (CAN) VERTICAL SPEED GIVING UNCLEAR READINGS. REPLACED VERTICAL SPEED INDICATOR. - [SDR 2002FA0000922](https://openairdocs.org/sdr/2002FA0000922), Jul 18, 2002: TUBE. CRACKED. TUBE APPEARED TO HAVE A PAINT FLAW. REMOVAL OF PAINT REVEALED A CRACKED TUBE WELD. TUBE REMOVED FROM SERVICE FOR TESTING/ INSPECTION BY MANUFACTURER. - [SDR 2002FA0000923](https://openairdocs.org/sdr/2002FA0000923), Jul 18, 2002: TUBE. CRACKED. TUBE APPEARED TO HAVE HAD A CRACK UNDERNEATH THE LUG WELD PRIOR TO COMPLETE FAILURE. THE FAILURE OF THIS TUBE ASSEMBLY CAUSED SEVERE VIBRATION IN AIRCRAFT, RESU - [SDR AUS20020700](https://openairdocs.org/sdr/AUS20020700), Jul 12, 2002: CARBURETOR. FAULTY. (AUS) NEWLY FITTED ENGINE CARBURETTOR WAS UNABLE TO LEAN THE MIXTURE USING THE MIXTURE SCREW. - [SDR CA011219005](https://openairdocs.org/sdr/CA011219005), Nov 23, 2001: CARBURETOR. MALFUNCTIONED. (CAN) ENGINE ROUGH AND SLOW AT RECOVERY FROM AUTOROTATOR. REPLACE CARBURATOR. - [SDR CA011116004](https://openairdocs.org/sdr/CA011116004), Nov 7, 2001: SUPPORT. CRACKED. (CAN) AFT MAIN ROTOR MAST SUPPORT (TAILBOOM TO MAIN ROTOR GEARBOX MAST) - [SDR CA011116003](https://openairdocs.org/sdr/CA011116003), Oct 23, 2001: SUPPORT. CRACKED. (CAN) AFT MAIN ROTOR MAST SUPPORT (TAILBOOM TO M/R GEARBOX MAST). - [SDR AUS20010479](https://openairdocs.org/sdr/AUS20010479), Apr 6, 2001: RETAINER. WORN. (AUS) THERMOFIT SLEEVE WORN ON RETAINER. - [SDR CA010226011](https://openairdocs.org/sdr/CA010226011), Feb 5, 2001: MAGNETO. FAILED. (CAN) AIRCRAFT HARD TO START. RETARD LOW INTENSITY SPARK. REPLACED MAGNETO. - [SDR CA010226012](https://openairdocs.org/sdr/CA010226012), Jan 25, 2001: RELAY. FAILED. (CAN) ENGAGEMENT INTERMITTENT DUE TO VIBRATION. REPLACED STARTER RELAY. - [SDR CA010214011](https://openairdocs.org/sdr/CA010214011), Jan 19, 2001: SHOULDER BELT. FAILED. (CAN) MAIN STRAP SHREADED.REPLACED SHOULDER STRAP. - [SDR CA001129002](https://openairdocs.org/sdr/CA001129002), Nov 8, 2000: CARBURETOR. FAILED. (CAN) ENGINE MISSED WITH THROTTLE ROLLED ON. REMOVED SENT FOR REPAIR AT PRECISION. (X) - [SDR CA001129003](https://openairdocs.org/sdr/CA001129003), Nov 8, 2000: TRANSMITTER. FAILED. (CAN) HIGH PRESSURE READING/INDICATION. REPLACED PART. (X) - [SDR CA001102004](https://openairdocs.org/sdr/CA001102004), Oct 10, 2000: CARBURETOR. INOPERATIVE. (CAN) ENGINE ROUGH WHEN PULLING POWER DURING EXERCISES, BUT NOT CONSTANT. REPLACED CARBURETOR. (X) - [SDR 20000828SH027](https://openairdocs.org/sdr/20000828SH027), Aug 8, 2000: INTAKE VALVE. GOUGED. AIRCRAFT EXPERIENCED A ROUGH RUNNING ENGINE ACCOMPANIED BY A LOSS OF POWER. SUSPECTING A STICKING VALVE, AN EXHAUST VALVE WIGGLE CHECK WAS PERFORMED IAW LYC SB - [SDR CA000404031](https://openairdocs.org/sdr/CA000404031), Mar 9, 2000: CARBURETOR. FAILED. (CAN) ENGINE QUIT DURING IDLE , AFTER RESTART, ENGINE WOULD NOT ACCELERATE FROM IDLE TO WARM UP RPM. CARBURETOR REPLACED. - [SDR CA000404029](https://openairdocs.org/sdr/CA000404029), Nov 24, 1999: CARBURETOR. LEAKING. CARBURETOR LEAKING INTERNALLY. - [SDR 20000622SH008](https://openairdocs.org/sdr/20000622SH008), Oct 5, 1999: BEARING CAGE. CRACKED. BEARING CAGE CRACKED AND CAME APART DURING OPERATION. RIVETING MARKS SEEMS TO HAVE BEEN THE ORIGIN OF CRACKS FOUND IN SIMILAR FAILURES IN THE PAST. (X) - [SDR CA990728092](https://openairdocs.org/sdr/CA990728092), Jul 22, 1999: CARBURETOR. FAILED. (CAN) PRECISION HA-6-10-60301. CARBURETOR FAILURE, INTERNAL. All 56: https://openairdocs.org/engine/lycoming-ho-360-c1a/reports.md ## STCs that may be installed (OpenAirDocs) (22) 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 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 HO-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 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 HO-360 Series - [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 HO-360 Series - [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists HO-360 Series - [STC SE01930NY](https://openairdocs.org/stc/SE01930NY): Installation of Casper Labs 90 degree oil filter housing adapter. Casper Labs Inc - [STC SE5743NM](https://openairdocs.org/stc/SE5743NM): Intallation of adapter for externally mounted oil filter. Aviation Development Corporation - [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 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 HO-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 HO-360 Series - [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists HO-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 HO-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 HO-360 Series - [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec. Lists HO-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 HO-360 Series - [STC SE30WE](https://openairdocs.org/stc/SE30WE): Conversion to Lycoming HIO-360-B1B engines. Pacific Airmotive Corp. Lists HO-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.