# Lycoming O-320-E2G

- Type: Engine model (FAA registry)
- Registry code: 42125
- Manufacturer (registry): LYCOMING
- Model: O-320-E2G
- Engine type: Reciprocating
- Power: 150 hp
- Data sheet: [TCDS E-274](https://openairdocs.org/tcds/E-274) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 28 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-o-320-e2g

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 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 98-17-11](https://openairdocs.org/ad/98-17-11): Crankshafts · Continental Motors A-65-3, A-65-8, A75-8 and 90 more. Effective Oct 19, 1998
- [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 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 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 81-16-05](https://openairdocs.org/ad/81-16-05): Magnetos · Lycoming Engines AEIO-320-E1B, AEIO-320-E2B, AEIO-360-B1G6 and 234 more. Effective Aug 6, 1981
- [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

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 (28)

- [N143W](https://openairdocs.org/aircraft/N143W): [Scott Jeffrey E](https://openairdocs.org/faa-owner/SCOTT%20JEFFREY%20E), [Cherokee Village, AR](https://openairdocs.org/faa-place/AR/Cherokee%20Village), built 2011, S/N 655
- [N191G](https://openairdocs.org/aircraft/N191G): [Seratt Timothy G](https://openairdocs.org/faa-owner/SERATT%20TIMOTHY%20G), [Harviell, MO](https://openairdocs.org/faa-place/MO/Harviell), built 2015, S/N TD 1
- [N202DG](https://openairdocs.org/aircraft/N202DG): [Golovko Daniel M](https://openairdocs.org/faa-owner/GOLOVKO%20DANIEL%20M), [East Falmouth, MA](https://openairdocs.org/faa-place/MA/East%20Falmouth), built 1972, S/N 0083
- [N21HK](https://openairdocs.org/aircraft/N21HK): [Sims Nathaniel Merriman](https://openairdocs.org/faa-owner/SIMS%20NATHANIEL%20MERRIMAN), [Boston, MA](https://openairdocs.org/faa-place/MA/Boston), built 1976, S/N AA5A-0257
- [N22783](https://openairdocs.org/aircraft/N22783): [Fookes Raymond R](https://openairdocs.org/faa-owner/FOOKES%20RAYMOND%20R), [Lenoir City, TN](https://openairdocs.org/faa-place/TN/Lenoir%20City), built 2013, S/N 0001
- [N26253](https://openairdocs.org/aircraft/N26253): [Tompkins Robert G](https://openairdocs.org/faa-owner/TOMPKINS%20ROBERT%20G), [Panacea, FL](https://openairdocs.org/faa-place/FL/Panacea), built 1979, S/N AA5A-0819
- [N277MW](https://openairdocs.org/aircraft/N277MW): [Euroaviation Inc Trustee](https://openairdocs.org/faa-owner/EUROAVIATION%20INC%20TRUSTEE), Kem, built 1974, S/N 0544
- [N287PS](https://openairdocs.org/aircraft/N287PS): [Sides Michael E](https://openairdocs.org/faa-owner/SIDES%20MICHAEL%20E), [Bartley, NE](https://openairdocs.org/faa-place/NE/Bartley), built 2022, S/N 1130
- [N3050J](https://openairdocs.org/aircraft/N3050J): [Lake Frederick, VA](https://openairdocs.org/faa-place/VA/Lake%20Frederick), built 1976, S/N AA5A0082, Registration pending
- [N320DH](https://openairdocs.org/aircraft/N320DH): [Hedge Daniel A](https://openairdocs.org/faa-owner/HEDGE%20DANIEL%20A), [Mabank, TX](https://openairdocs.org/faa-place/TX/Mabank), built 2007, S/N 98-1086
- [N32SK](https://openairdocs.org/aircraft/N32SK): [Kukolich Stephen G](https://openairdocs.org/faa-owner/KUKOLICH%20STEPHEN%20G), [Tuscon, AZ](https://openairdocs.org/faa-place/AZ/Tuscon), built 1977, S/N AA5A0492
- [N347ST](https://openairdocs.org/aircraft/N347ST): [Graber Joel C](https://openairdocs.org/faa-owner/GRABER%20JOEL%20C), [Collins, MS](https://openairdocs.org/faa-place/MS/Collins), built 2015, S/N 0001
- [N376DM](https://openairdocs.org/aircraft/N376DM): [Tichy Cotton V](https://openairdocs.org/faa-owner/TICHY%20COTTON%20V), [Atascadero, CA](https://openairdocs.org/faa-place/CA/Atascadero), built 1977, S/N AA5A-0376
- [N439DS](https://openairdocs.org/aircraft/N439DS): [Brinkman Richard L](https://openairdocs.org/faa-owner/BRINKMAN%20RICHARD%20L), [Troy, OH](https://openairdocs.org/faa-place/OH/Troy), S/N 1744
- [N522MW](https://openairdocs.org/aircraft/N522MW): [Towery Kelly D](https://openairdocs.org/faa-owner/TOWERY%20KELLY%20D), [Mckinney, TX](https://openairdocs.org/faa-place/TX/Mckinney), built 2014, S/N 21191
- [N532JH](https://openairdocs.org/aircraft/N532JH): [Bobiak James R](https://openairdocs.org/faa-owner/BOBIAK%20JAMES%20R), [Deary, ID](https://openairdocs.org/faa-place/ID/Deary), built 2012, S/N 532
- [N593AC](https://openairdocs.org/aircraft/N593AC): [Homelvig John D](https://openairdocs.org/faa-owner/HOMELVIG%20JOHN%20D), [Bismarck, ND](https://openairdocs.org/faa-place/ND/Bismarck), built 2026, S/N 91144
- [N625WZ](https://openairdocs.org/aircraft/N625WZ): [Chris Vinton Ranch Co](https://openairdocs.org/faa-owner/CHRIS%20VINTON%20RANCH%20CO), [Whitman, NE](https://openairdocs.org/faa-place/NE/Whitman), built 2008, S/N TC0703012
- [N714AS](https://openairdocs.org/aircraft/N714AS): [Santos Andres A](https://openairdocs.org/faa-owner/SANTOS%20ANDRES%20A), [Barranquitas, PR](https://openairdocs.org/faa-place/PR/Barranquitas), built 2012, S/N 1962
- [N884RV](https://openairdocs.org/aircraft/N884RV): [Dannebrock Paul W](https://openairdocs.org/faa-owner/DANNEBROCK%20PAUL%20W), [Lockport, NY](https://openairdocs.org/faa-place/NY/Lockport), built 2012, S/N 90884
- [N914AD](https://openairdocs.org/aircraft/N914AD): [Depinet Andrew P](https://openairdocs.org/faa-owner/DEPINET%20ANDREW%20P), [Galion, OH](https://openairdocs.org/faa-place/OH/Galion), built 2026, S/N 001
- [N9587L](https://openairdocs.org/aircraft/N9587L): [Wiles Robert B](https://openairdocs.org/faa-owner/WILES%20ROBERT%20B), [Biloxi, MS](https://openairdocs.org/faa-place/MS/Biloxi), built 1974, S/N AA5-0587
- [N961KS](https://openairdocs.org/aircraft/N961KS): [Benton Brian](https://openairdocs.org/faa-owner/BENTON%20BRIAN), [Folsom, CA](https://openairdocs.org/faa-place/CA/Folsom), built 1973, S/N AA5-0363
- [N9779U](https://openairdocs.org/aircraft/N9779U): [Zauner Paul F](https://openairdocs.org/faa-owner/ZAUNER%20PAUL%20F), [Hanover, MA](https://openairdocs.org/faa-place/MA/Hanover), built 1976, S/N AA5A-0179
- [N9791U](https://openairdocs.org/aircraft/N9791U): [Woods Joe](https://openairdocs.org/faa-owner/WOODS%20JOE), [Newalla, OK](https://openairdocs.org/faa-place/OK/Newalla), built 1976, S/N AA5A-0191
- [N9845U](https://openairdocs.org/aircraft/N9845U): [Klingberg Roger R](https://openairdocs.org/faa-owner/KLINGBERG%20ROGER%20R), [Cross Plains, TX](https://openairdocs.org/faa-place/TX/Cross%20Plains), built 1976, S/N AA5A0245
- [N9849U](https://openairdocs.org/aircraft/N9849U): [Staples L E](https://openairdocs.org/faa-owner/STAPLES%20L%20E), [Granbury, TX](https://openairdocs.org/faa-place/TX/Granbury), built 1976, S/N AA5A0249
- [N9965U](https://openairdocs.org/aircraft/N9965U): [Edward Brent M](https://openairdocs.org/faa-owner/EDWARD%20BRENT%20M), [Meridian, ID](https://openairdocs.org/faa-place/ID/Meridian), built 1977, S/N AA5A0365

## 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 GAA19CA384](https://openairdocs.org/ntsb/GAA19CA384), Jul 2, 2019: American AA5 (N387G), Cheyenne, WY, substantial damage. Probable cause: The pilot's failure to maintain a proper descent rate and landing flare during landing with a tailwind, which resulted in a hard landing and a subsequent loss of directional control, runway…

## 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 20201110021699I](https://openairdocs.org/incident/20201110021699I), Nov 10, 2020: Grumman American Avn. Corp. AA-5A (N9849U), Granbury, TX, Minor damage. Gruman aircraft landed on runway 19 and continued off runway into the grass. Skidmarks in the grass and dirt show the brakes were applied but unable to stop…
- [Accident 20190701008769A](https://openairdocs.org/incident/20190701008769A), Jul 1, 2019: Grumman American Avn. Corp. AA-5A (N387G), Cheyenne, WY, Substantial damage. On Monday, July 01, 2019, N387G, a Grumman AA-5A cheetah, operated by a commercial rated pilot with a commercial rated pilot as a passenger, was en route to…

## Service difficulty reports (23)

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

- [SDR 2018FA0000197](https://openairdocs.org/sdr/2018FA0000197), Jun 28, 2018: CYLINDER. DAMAGED. DISCOVERED THAT THE CYLINDERS 3 AND 4 WERE PRODUCING COMPRESSIONS BETWEEN 20 - 25 PSI. NEW CYLINDERS AND PARTS WERE INSTALLED AND BREAK IN PROCEDURES WERE FOLLO
- [SDR 2017FA0000312](https://openairdocs.org/sdr/2017FA0000312), Jul 1, 2017: EFI. FAILED. HAD ABOUT 10 HRS ON A NEW G5 EFI WHEN IT STARTED TO GIVE FALSE BANK ANGLES. 5-10 DEGREES IN ONE DIRECTION FOR SEVERAL MINUTES AND THEN 5-10 DEGREES IN THE OTHER
- [SDR 2007FA0000091](https://openairdocs.org/sdr/2007FA0000091), Jan 18, 2007: PUMP. LEAKING. AT ANNUAL FUEL STAINS WERE FOUND ON ENGINE LOWER COWLING. IN AN ATTEMPT TO FIND THE LEAK THE ELECTRIC FUEL PUMP WAS TURNED ON TO PRESSURIZE THE FUEL SYSTEM BUT 
- [SDR AUS20040161](https://openairdocs.org/sdr/AUS20040161), Feb 28, 2004: CYLINDER. WORN. (AUS) NR 1 CYCLINDER WORN. PISTON, RING, & BARREL CLEARANCES EXCESSIVE.
- [SDR 2002FA0000821](https://openairdocs.org/sdr/2002FA0000821), Jun 29, 2002: EXHAUST VALVE. BROKEN. REPLACED NR 3 CYLINDER & PISTON DUE TO EXHAUST VALVE SEPARATION & DAMAGE TO CYLINDER CAUSED BY NOT REPLACING NEEDED PARTS AT M.O.H. (466.6-HRS S.M.O.H.) TOTAL T
- [SDR 2001FA0000389](https://openairdocs.org/sdr/2001FA0000389), Apr 18, 2001: SUPPORT. CORRODED. CORROSION DISCOVERED IN UPPER SURFACES OF BOTH LEFT AND RIGHT SUPPORTS. DETECTED BY PREPING THE SUPPORTS FOR PAINT WITH A STAINLESS STEEL WIRE BRUSH AND SLIGHT 
- [SDR 20001227SH034](https://openairdocs.org/sdr/20001227SH034), Dec 11, 2000: CAMSHAFT. DAMAGED. CYLINDERS 2 AND 4 REMOVED DUE TO LOW COMPRESSION. AT THIS TIME, THE CAMSHAFT WAS FOUND SEVERELY PITTED, ONE LOBE WAS FLAT. LIFTER BODIES WERE ALSO PITTED. 1,317
- [SDR 20001120SH058](https://openairdocs.org/sdr/20001120SH058), Aug 2, 2000: PLUG. FAILED. PISTON PIN PLUG IN CYLINDER NR 2 FAILED CATASTROPHICALLY ENLARGING PISTON BOSS AND WEARING INTO LOWER RING. ENGINE WAS 800 SMOH, CYLINDERS .010 INCH OS (PLAIN S
- [SDR 2000ZZZX374](https://openairdocs.org/sdr/2000ZZZX374), Jan 3, 2000: LINE. FROZE. ENGINE AIR BREATHER PINCH HOLE HAD B EEN ELIMINATED BY PARTIES UNKNOWN. BREATHER LINE FROZE SHUT AT 15,000 FEET. EXCESSIVE CRANKCASE PRESSURE CAUSED THE CRANKSH
- [SDR 2000ZZZX48](https://openairdocs.org/sdr/2000ZZZX48), Dec 17, 1999: SCREW. LOOSE. AIRCRAFT WAS REPORTED TO BE RUNNING ROUGH AND WOULD NEARLY 'DIE' ON ROLL-OUT. FOUND CARBURETOR THROTTLE BODY TO BOWL SCREW LOOSE. REMOVED FROM ENGINE. INSPECTED
- [SDR AU990292](https://openairdocs.org/sdr/AU990292), Mar 24, 1999: SEAT BELT. WRONG PART. (AUS) AUTOMOTIVE SEAT BELT INSTALLED IN REAR SEATS. SEAT BELTS DO NOT COMPLY WITH AD/RES/10 AMDT4.
- [SDR CA990330033](https://openairdocs.org/sdr/CA990330033), Mar 4, 1999: BLADE. DAMAGED. (CAN) PROPELLER RECEIVED FOR CORROSION INSPECTION. THE PROPELLER BLADES WERE FOUND WITH STONE DAMAGE. THE BLADES WERE TRIMMED.
- [SDR AU981421](https://openairdocs.org/sdr/AU981421), Oct 31, 1998: LINE. CORRODED. (AUS) ALUMINIUM FUEL PRESSURE LINE FROM FIREWALL REAR FITTING TO FUEL PRESSURE GAUGE CORRODED THROUGH FROM CONTACT WITH THE STEEL WIRE OF THE DE-MISTER SCAT HOS
- [SDR AU981422](https://openairdocs.org/sdr/AU981422), Oct 31, 1998: DUCT. CHAFED. (AUS) DE-MISTER SCAT HOSE RUBBING ON FUEL PRESSURE PIPE. REF: OPERATOR CONTROL NR AU981421 FOR ADDITIONAL INFORMATION.
- [SDR CA980908019](https://openairdocs.org/sdr/CA980908019), Aug 25, 1998: NUT. CRACKED. (CAN) AIRCRAFT DAMAGED IN LANDING ACCIDENT. WHEN HORIZONTAL STABILIZER WAS BEING REINSTALLED AFTER REPAIR, A BOLT WOULD NOT REACH PROPER TORQUE. HORIZONTAL STAB
- [SDR 98ZZZX3307](https://openairdocs.org/sdr/98ZZZX3307), Jul 27, 1998: BEARING. SPUN. AIRCRAFT HAD A LOSS OF POWER AND A LOSS OF OIL PRESSURE DURING NORMAL FLIGHT. INSPECTION OF ENGINE AFTER EMERGENCY LANDING REVEALED A SPUN BEARING ON CRANKSHAFT
- [SDR AU970578](https://openairdocs.org/sdr/AU970578), May 28, 1997: SKIN. DELAMINATED. (AUS) LH WING LOWER SKIN DELAMINATING - ELEVATOR TRIM TAB ALSO DELAMINATED - FOUND DURING INSPECTION IAW SB -155
- [SDR AU970579](https://openairdocs.org/sdr/AU970579), May 28, 1997: AILERON. WORN. (AUS) AILERON CONTROL CABLES LOOSE - AILERON BEARINGS WORN - OUTBOARD TORQUE TUBES WORN - TRIM TABS LOOSE - FOUND DURING INSPECTION IAW SB 165A
- [SDR AU970554](https://openairdocs.org/sdr/AU970554), Feb 5, 1997: STRUT. CORRODED. (AUS) NOSE LANDING GEAR STRUT CORRODED (RUSTED) AND SEIZED IN TORQUE TUBE FITTING - PROTECTION BOOT OLD AND DETERIORATED
- [SDR 96ZZZX3536](https://openairdocs.org/sdr/96ZZZX3536), Jul 2, 1996: VALVE. BLOCKED OPEN. ON INITIAL RUN-UP AFTER INSTALLING ENGINE AFTER MAJOR OVERHAUL, ENGINE WAS RUN AROUND 5 MINUTES AT 1,000-1,200 RPM'S. ENGINE RPM WAS INCREASED TO 1,700 FOR MAG 
- [SDR AU960453](https://openairdocs.org/sdr/AU960453), Apr 4, 1996: BOLT. CRACKED. (AUS) WING SHOULDER BOLTS (2OFF) CRACKED - FOUND DURING MAGNETIC PARTICLE INSPECTION (MPI)
- [SDR 96ZZZX49](https://openairdocs.org/sdr/96ZZZX49), Nov 7, 1995: VALVE. LEAKING. AIRCRAFT WAS TAKING OFF, NOT GENERATING FULL POWER. NOTICED SLIGHT VIBRATION. RETURNED TO AIRPORT. VIBRATION INCREASED AS AIRCRAFT EXECUTED EMERGENCY LANDING AT
- [SDR 95ZZZX5939](https://openairdocs.org/sdr/95ZZZX5939), Oct 5, 1995: VALVE. FAILED. PILOT REPORTED POWER LOSS OF MAX RPM 1600. INSPECTED POWERPLANT, FOUND NR 3 CYLINDER HAD NO COMPRESSION. PULLED CYLINDER, FOUND EXHAUST VALVE BROKEN. TOP OF PIS

## 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 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 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 SE1931CE](https://openairdocs.org/stc/SE1931CE): Add the following approved fuel: unleaded automotive gasoline, 87 minimum antiknock index and leaded automotive gasoline, 88 minimum antiknock index, (RON+MON)/2. Petersen Aviation 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 SE682NE](https://openairdocs.org/stc/SE682NE): Conversion of Model 0-320-E2G engine to high compression. Precision Engine
- [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 SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation
- [STC SE1226CE](https://openairdocs.org/stc/SE1226CE): Modify engines for a 160 horsepower rating on 100/130 minimum grade fuel. Ly-Con Rebuilding Company
- [STC SE00252SE](https://openairdocs.org/stc/SE00252SE): Modification for a 160 hp rating on 100/100LL minimum grade fuel. Ly-Con Rebuilding Company
- [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
- [STC SE800GL](https://openairdocs.org/stc/SE800GL) (historical): Superseded by STC SE01943CH. Add the following fuel: unleaded automotive gasoline, 87 minimum antiknock index. EAA Aviation Foundation. Lists O-320-E Series

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