# Superior 0-320-D1A

- Type: Engine model (FAA registry)
- Registry code: 59201
- Manufacturer (registry): SUPERIOR
- Model: 0-320-D1A
- Engine type: Reciprocating
- Power: 160 hp
- Data sheet: [TCDS E-274](https://openairdocs.org/tcds/E-274) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 3 registered aircraft
- Page: https://openairdocs.org/engine/superior-0-320-d1a

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 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 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 98-01-06](https://openairdocs.org/ad/98-01-06): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 184 more. Effective Feb 13, 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 93-19-04](https://openairdocs.org/ad/93-19-04): Carburetors · Continental Motors A-65-1, A-65-12, A-65-12F and 184 more. Effective Oct 18, 1993
- [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 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 66-06-03](https://openairdocs.org/ad/66-06-03): Connecting Rod Assemblies · Lycoming Engines GO-435-C2 (O-435-17), GO-435-C2A, GO-435-C2A2 and 317 more. Effective Jan 16, 1969
- [AD 63-23-02](https://openairdocs.org/ad/63-23-02): Exhaust Valves · Lycoming Engines O-320-A1A, O-320-A1B, O-320-A2A and 25 more. Effective Aug 6, 1968
- [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 66-20-04](https://openairdocs.org/ad/66-20-04): Oil Filter Adapter Gasket · Lycoming Engines IO-320-A1A, IO-320-A2A, IO-320-B1A and 121 more. Effective Aug 27, 1966
- [AD 64-16-05](https://openairdocs.org/ad/64-16-05): AC Pumps · Lycoming Engines HIO-360-B1A, HIO-360-B1B, IO-320-B1A and 86 more. Effective Jul 10, 1964

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 (3)

- [N144DF](https://openairdocs.org/aircraft/N144DF): [Pessel William O Jr](https://openairdocs.org/faa-owner/PESSEL%20WILLIAM%20O%20JR), [Princeton, NJ](https://openairdocs.org/faa-place/NJ/Princeton), built 1993, S/N 1907
- [N246DA](https://openairdocs.org/aircraft/N246DA): [Adams Dennis M](https://openairdocs.org/faa-owner/ADAMS%20DENNIS%20M), [Idaho Falls, ID](https://openairdocs.org/faa-place/ID/Idaho%20Falls), built 2021, S/N 92131
- [N929DF](https://openairdocs.org/aircraft/N929DF): [Fanning Dale E](https://openairdocs.org/faa-owner/FANNING%20DALE%20E), [Chesapeake, VA](https://openairdocs.org/faa-place/VA/Chesapeake), built 2017, S/N 92046

## 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 CEN16LA281](https://openairdocs.org/ntsb/CEN16LA281), Jul 22, 2016: Vans RV9 (N807LK), Springfield, OH, destroyed, 2 fatal. Probable cause: The pilot’s decision to fly into known thunderstorms, which resulted in an in-flight breakup.

## 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 20160722013689A](https://openairdocs.org/incident/20160722013689A), Jul 22, 2016: Vans RV9A (N807LK), Springfield, OH, Destroyed, 2 fatal. N807LK was VFR on a northerly heading and communicating with columbus ATC trying to fly around incoming weather, at that time there was a line of severe…

## Service difficulty reports (23)

As reported by operators and repair stations, by the model named in the report.

- [SDR CA150603006](https://openairdocs.org/sdr/CA150603006), Jun 3, 2015: STARTER. MISOVERHAULED. (CAN) STUDENT HEARD GRINDING NOISES WHEN ATTEMPTING TO START ACFT. MAINTENANCE FOUND THE BENDIX SHAFT FWD BUSHING MISSING ON STATER, WHICH ALLOWED BENDIX ASSEMB
- [SDR CA150304004](https://openairdocs.org/sdr/CA150304004), Mar 4, 2015: BUSHING. BROKEN. (CAN) UPON LANDING AND TAXI, THE PILOT REPORTED A NOISE AND DIFFICULTY TAXIING. SHUTDOWN THE ACFT AND DISCOVERED THE NOSE WHEEL ASSY TILTED AND THE CENTER BOLT 
- [SDR CA141007002](https://openairdocs.org/sdr/CA141007002), Oct 6, 2014: STARTER GEN. ENGAGED. (CAN) PILOT REPORT LOSS OF POWER AFTER REDUCING POWER FOR DECENT AFTER REDUCING TO 1500 RPM FOR DESCENT THE PILOT NOTICED THE ENGINE AT 1100 RPM. HE ADDED POWER
- [SDR CA140130011](https://openairdocs.org/sdr/CA140130011), Jan 29, 2014: TUBE. FAILED. (CAN) DURING FLIGHT THE PILOT NOTICE A LOSS OF FUEL INDICATION IN THE LT TANK. THE ACFT RETURNED WITH OUT INCIDENT. DURING THE INSPECTION OF THE SNAG IT WAS FOU
- [SDR CA131121002](https://openairdocs.org/sdr/CA131121002), Nov 20, 2013: STARTER. INOPERATIVE. (CAN) THE ENGINE FAILED TO START THE AIRCRAFT DURING AN ATTEMPTED START. BENDIX DID ENGAGE THE RING GEAR BUT WOULD NOT TURN THE ENGINE. THE STARTER WAS REPLACED
- [SDR CA130715016](https://openairdocs.org/sdr/CA130715016), Jul 12, 2013: ALTERNATOR. FAILED. (CAN) AIRCRAFT EXPERIENCED LOSS OF TACHOMETER IN FLIGHT AND GENERATOR LIGHT ILLUMINATED. ACFT LANDED WITHOUT INCIDENT. INSPECTION OF THE GENERATOR SYS SHOWED TH
- [SDR CA111110006](https://openairdocs.org/sdr/CA111110006), Nov 4, 2011: MUFFLER. BROKEN. (CAN) LEFT MUFFLER OUTLET PIPE FOUND MISSING. INSPECTION OF REMAINING MUFFLER DISCOVERED EXTENSIVE INTERNAL CORROSION AND PARTIAL COLLAPSE OF INNER CONE.
- [SDR 2009FA0000792](https://openairdocs.org/sdr/2009FA0000792), Aug 12, 2009: ARM. CRACKED. THE STEERING ARM ON LT SIDE OF THE TAILWHEEL ASSY WAS FOUND CRACKED ACROSS THE RADIUS OF BEND NEAR THE HUB OF THE STEERING ASSY. THIS WAS FOUND ON A PREFLIGHT I
- [SDR CA081120001](https://openairdocs.org/sdr/CA081120001), Nov 19, 2008: BUCKLE. UNSERVICEABLE. (CAN) BUCKLE WOULD NOT RELEASE.
- [SDR 2005FA0001051](https://openairdocs.org/sdr/2005FA0001051), Jul 19, 2005: MOUNT. CHAFED. LOWER RT DIAGONAL ENGINE MOUNT TUBE FOUND CHAFED DO TO EXHAUST PIPE COMING INTO CONTACT WITH THE TUBE, THIS HAPPENED DO TO THE CLOSE PROXIMITY OF THE EXHAUST SY
- [SDR AUS20031044](https://openairdocs.org/sdr/AUS20031044), Sep 30, 2003: BELLCRANK. CORRODED. (AUS) FLAP BELLCRANK CORRODED. FOUND DURING INSPECTION IAW AD/PA23/50.
- [SDR AUS20031045](https://openairdocs.org/sdr/AUS20031045), Sep 30, 2003: TORQUE TUBE. WORN. (AUS) FLAP TORQUE TUBE WORN BEYOND LIMITS. FOUND DURING INSPECTION IAWAD/PA23/89.
- [SDR CA030817001](https://openairdocs.org/sdr/CA030817001), Aug 8, 2003: SPRING. BROKEN. (CAN) WHILE TOWING THE AIRCRAFT TO ITS PARKING SPOT, A BANG WAS HEARD. THE AILERONS DEFLECTED FULL SCALE LT. THE AILERON AND RUDDER WERE NO LONGER INTERCONNECTE
- [SDR CA030728003](https://openairdocs.org/sdr/CA030728003), Jul 28, 2003: WIRE HARNESS. FAILED. (CAN) A WIRE BUNDLE BEHIND THE RT INSTRUMENT PANEL HAD CHAFED ON A SCREW SECURING A FACTORY INSTALLED BLANKING PLATE. THE NUT APPEARS TO HAVE BECOME LODGED IN T
- [SDR 2002FA0000853](https://openairdocs.org/sdr/2002FA0000853), Jul 23, 2002: MUFFLER. SEPARATED. RT MUFFLER/EXHAUST LITERALLY FELL APART IN FLIGHT. BEYOND REPAIR. THE INLET FLANGE/PIPE ASSEMBLY COMPLETELY BROKE LOOSE FROM THE MUFFLER BODY. THE EXHAUST HANGA
- [SDR BIER200103057](https://openairdocs.org/sdr/BIER200103057), Jul 3, 2001: CARBURETOR. LOOSE. FOUND FUEL BOWL ATTACH SCREWS LOOSE WITH SUBSEQUENT FUEL LEAK AT BOWL GASKET, REQUIRED CARBURETOR REPLACEMENT DUE TO SCREW HOLE ELONGATION. SUBMITTER NOTES: LYC
- [SDR CA981109026](https://openairdocs.org/sdr/CA981109026), Oct 15, 1998: BRACKET. BROKEN. (CAN) LEFT MAIN GEAR FOUND WITH EXCESSIVE PLAY DURING INSPECTION. LEFT MAIN GEAR UPPER BRACKET FOUND BROKEN AT THE FORWARD BOLT HOLE. CRACKS WERE FOUND IN THE W
- [SDR CA980827013](https://openairdocs.org/sdr/CA980827013), Aug 21, 1998: PLATE. JAMMED. (CAN) LATCH JAMMED ON CANOPY PLATE. CANOPY COULD NOT BE MOVED AFT AS IT WAS HOOKING ON THE PLATE. LATCH/LOCK IN THE OPEN POSITION. THIS WOULD STOP CANOPY EMERGE
- [SDR AU970284](https://openairdocs.org/sdr/AU970284), Mar 24, 1997: HUB. FAULTY. (AUS) PROPELLER HUB BOLT HOLES (4OFF) TOO LARGE DUE TO INCORRECT DIAMETER BOLTS BEING USED - SEE MDR 97/0283
- [SDR AU970283](https://openairdocs.org/sdr/AU970283), Mar 6, 1997: BOLT. WRONG PART. (AUS) PROPELLER HUB BOLTS (4OFF) INCORRECT PARTS. BOLTS MEASURE .375 -CORRECT MEASUREMENT .371. PERSONNEL/MAINTENANCE ERROR. UNAPPROVED PART.
- [SDR AU960597](https://openairdocs.org/sdr/AU960597), May 7, 1996: VALVE GUIDE. WORN. (AUS) ENGINE CYLINDER EXHAUST VALVE GUIDES (3OFF) EXCESSIVELY WORN - VALVE GUIDES WERE WITHIN SERVICE LIMITS BUT WOULD NOT LAST TO THENEXT TOP END OVERHAUL
- [SDR 96ZZZX5137](https://openairdocs.org/sdr/96ZZZX5137), Oct 28, 1995: MAGNETO. COIL FAILED. ON MAY 4, 1995, DUE TO HARD START PROBLEM, THE LEFT MAG COIL WAS FOUND DEFECTIVE. ON OCTOBER 28, 1995, THE RIGHT MAG FAILED IN-FLIGHT DUE TO A DEFECTIVE COIL.
- [SDR 96ZZZX5138](https://openairdocs.org/sdr/96ZZZX5138), Oct 28, 1995: MAGNETO. COIL FAILED. ON MAY 4, 1995, DUE TO HARD START PROBLEM, THE LEFT MAG COIL WAS FOUND DEFECTIVE. ON OCTOBER 28, 1995, THE RIGHT MAG FAILED IN-FLIGHT DUE TO A DEFECTIVE COIL.

## STCs that may be installed (OpenAirDocs) (48)

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 O-320 Series
- [STC SE208SO](https://openairdocs.org/stc/SE208SO): Installation of ice indicator in the carburetor. LegacySTC.com. Lists O-320 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 SE2391CE](https://openairdocs.org/stc/SE2391CE): Installation of B&C Speciality Products lightweight (10.2 pounds) engine starter, part number BC-315-100-1 (12 volts) or part number BC-315-100-3 (24 volts) on engines with ring gears that have 122 teeth. B & C Specialty Products Inc. Lists O-320 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 SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters. Cygnet Aerospace Corp
- [STC SE03215CH](https://openairdocs.org/stc/SE03215CH): STC for the conversion of Lycoming O-320-A, B, C, D, E; IO-320-A, B, C, D, E, F; AIO-320-A, B; AEIO-320-D, E to increase engine displacement to 340 cubic inches by installation of a crankshaft with a longer stroke. Continental Motors, Inc
- [STC SE1339SW](https://openairdocs.org/stc/SE1339SW): Modify pistons to Drawings 11007 and 11015; piston rings. Continental Motors, Inc
- [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts. Continental Motors, Inc. Lists O-320 Series
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists O-320 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-320 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-320 Series
- [STC SE2901NM](https://openairdocs.org/stc/SE2901NM): Lycoming valve cover gasket. Real Gaskets Tennessee
- [STC SE00590DE](https://openairdocs.org/stc/SE00590DE): Installation of modified Lubricated Camshaft. Centri-Lube Technologies LLC
- [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 SE419CH](https://openairdocs.org/stc/SE419CH): 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 ) ignition system. 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 SE862GL](https://openairdocs.org/stc/SE862GL): Replacement of Bendix S4LN-20, -21, -1209, or -1227 model magnetos with Slick model4250 or 4251 magnetos. 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 SE2587CE](https://openairdocs.org/stc/SE2587CE): Add unleaded and leaded automotive gasoline, 91 minimum antiknock index per ASTM specification D-439. Petersen Aviation Inc
- [STC SE01930NY](https://openairdocs.org/stc/SE01930NY): Installation of Casper Labs 90 degree oil filter housing adapter. Casper Labs 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 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-320 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-320 Series
- [STC SE00590LA](https://openairdocs.org/stc/SE00590LA): Installation of Nickson's cylinder barrels on Lycoming reciprocating engine models. Nickson's Machine Shop Inc. Lists O-320-D 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-320 Series
- [STC SE3647SW](https://openairdocs.org/stc/SE3647SW): Engine replacement parts. U.S. Technical. Lists O-320 Series
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists O-320 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-320 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-320 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-320 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-320 Series
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec. Lists O-320 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-320 Series
- [STC SE508AL](https://openairdocs.org/stc/SE508AL): Addition of crankcase relief valve. Univair Aircraft Corp
- [STC SE2392SW](https://openairdocs.org/stc/SE2392SW): Conversion to fuel injection configuration equivalent IO-320-E2A. Swick Aircraft. Lists O-320 Series
- [STC SE2-7](https://openairdocs.org/stc/SE2-7): Carburetor air temperature bulb in Marvel-Schebler MA-4-5 carburetor. McElroy Lynn. Lists O-320 Series
- [STC SE5CE](https://openairdocs.org/stc/SE5CE): Prestolite ALK-5001 alternator. Larsen Industries. Lists O-320 Series

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