# Aerotec O-320 series

- Type: Engine model (FAA registry)
- Registry code: 63203
- Manufacturer (registry): AEROTEC
- Model: O-320
- Engine type: Reciprocating
- Power: 150 hp
- Data sheet: [TCDS E-274](https://openairdocs.org/tcds/E-274) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 2 registered aircraft
- Page: https://openairdocs.org/engine/aerotec-o-320-series

The registry names only the engine series, so ADs for every model in the series are matched.

## ADs that may apply (OpenAirDocs)

Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment.

- [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026
- [AD 2022-16-03](https://openairdocs.org/ad/2022-16-03): Engine (RECIPROCATING) · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 236 more. Effective Aug 15, 2022
- [AD 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 2010-07-08](https://openairdocs.org/ad/2010-07-08): Turbochargers · Kelly Aerospace Energy Systems HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 137 more. Effective Apr 19, 2010
- [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 2002-12-07](https://openairdocs.org/ad/2002-12-07): Oil Filter Converter Plate Gasket or the Converter Plate Kit · Lycoming Engines HIO-360-E1AD, HIO-360-E1BD, HIO-360-F1AD and 95 more. Effective Jul 3, 2002
- [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 80-04-03 R2](https://openairdocs.org/ad/80-04-03-R2): Hydraulic Lifter · Lycoming Engines LO-360-E1A6D, LTO-360-E1A6D, O-320-H1AD and 7 more. Effective Apr 25, 1988
- [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 80-14-07](https://openairdocs.org/ad/80-14-07): Upper Exhaust Valve Spring Seats · Lycoming Engines LO-360-E1A6D, O-320-H1AD, O-320-H1BD and 5 more. Effective Jul 7, 1980
- [AD 79-10-03 R2](https://openairdocs.org/ad/79-10-03-R2): Engine Mounting Bracket Attaching Bolts · Lycoming Engines LO-360-E1A6D, O-320-H2AD and O-360-E1A6D. Effective Jul 1, 1980
- [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 78-12-09](https://openairdocs.org/ad/78-12-09): Crankshaft Gear Assembly · Lycoming Engines O-320-H1AD, O-320-H1BD, O-320-H2AD and 3 more. Effective Feb 20, 1979
- [AD 77-07-07](https://openairdocs.org/ad/77-07-07): Oil Level Gage · Lycoming Engines O-320-H2AD. Effective Feb 20, 1979
- [AD 77-20-07](https://openairdocs.org/ad/77-20-07): Loose Rocker Arm Retaining Studs and Hydraulic Tappets · Lycoming Engines O-320-H1AD, O-320-H1BD, O-320-H2AD and 3 more. Effective Aug 31, 1978
- [AD 78-12-08](https://openairdocs.org/ad/78-12-08): Oil Pump Body · Lycoming Engines O-320-H1AD, O-320-H1BD, O-320-H2AD and 3 more. Effective Jun 20, 1978
- [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
- [AD 59-10-07](https://openairdocs.org/ad/59-10-07): Cylinder Baffle Clamps · Lycoming Engines GO-480-A1A, GO-480-B, GO-480-B1A6 and 58 more
- [AD 55-02-02](https://openairdocs.org/ad/55-02-02): Gasket · Lycoming Engines O-320-A1A and O-320-A2A

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 2000-18-53](https://openairdocs.org/ad/2000-18-53) (historical): Oil Filter Converter Plate Gaskets · Textron Lycoming, AVCO AEIO-540, IO-360-A1B6D, IO-360-A1D6D and 73 more
- [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) (17)

- [SAIB NE-06-31R6](https://openairdocs.org/saib/NE-06-31R6): Engine Lubricating Oils. Issued Sep 26, 2022
- [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-06-31R5](https://openairdocs.org/saib/NE-06-31R5) (historical): Engine Lubricating Oils. Issued Oct 19, 2011
- [SAIB NE-06-31R4](https://openairdocs.org/saib/NE-06-31R4) (historical): Engine Lubricating Oils. Issued Jul 6, 2011
- [SAIB NE-08-26R3](https://openairdocs.org/saib/NE-08-26R3): Magneto/Distributor. Issued Mar 31, 2011
- [SAIB NE-06-31R3](https://openairdocs.org/saib/NE-06-31R3) (historical): Engine Lubricating Oils. Issued Jul 22, 2009
- [SAIB NE-06-31R2](https://openairdocs.org/saib/NE-06-31R2) (historical): Engine Lubricating Oils. Issued Apr 29, 2009
- [SAIB NE-06-32R1](https://openairdocs.org/saib/NE-06-32R1): Reciprocating Engine - Crankshaft. Issued Sep 10, 2008
- [SAIB NE-08-26R1](https://openairdocs.org/saib/NE-08-26R1) (historical): Dual Magnetos. Issued Jul 8, 2008
- [SAIB NE-08-32](https://openairdocs.org/saib/NE-08-32) (historical): Propeller Governor Set Screw. Issued Jul 3, 2008
- [SAIB NE-06-31R1](https://openairdocs.org/saib/NE-06-31R1) (historical): . Issued Apr 18, 2006
- [SAIB NE-06-31](https://openairdocs.org/saib/NE-06-31) (historical): . Issued Feb 27, 2006
- [SAIB NE-03-18](https://openairdocs.org/saib/NE-03-18): . Issued Jan 22, 2003
- [SAIB NE-00-22](https://openairdocs.org/saib/NE-00-22): . Issued May 23, 2000

## Registered aircraft (2)

- [N107SW](https://openairdocs.org/aircraft/N107SW): [Panther Aviation LLC](https://openairdocs.org/faa-owner/PANTHER%20AVIATION%20LLC), [Granbury, TX](https://openairdocs.org/faa-place/TX/Granbury), built 2023, S/N 107
- [N838A](https://openairdocs.org/aircraft/N838A): [Jsl Air LLC](https://openairdocs.org/faa-owner/JSL%20AIR%20LLC), [Sikeston, MO](https://openairdocs.org/faa-place/MO/Sikeston), S/N 83812017

## NTSB investigations

None matched to aircraft with this engine model.

## 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.

- [Incident 20180511013649I](https://openairdocs.org/incident/20180511013649I), May 11, 2018: Daniel R Dufault DENALI CUB (N838A), Phippsburg, ME, Minor damage. N838A departed the spurwick farm airfield (turf) in cape elizabeth, Maine, for a VFR flight along the coast of Maine. Over the Phippsburg, Maine area PIC…

## Service difficulty reports (346, newest 50)

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

- [SDR 2026FA0000681](https://openairdocs.org/sdr/2026FA0000681), Sep 3, 2026: GASCOLATOR. DIRTY. PILOT REPORTED LOW POWER AND VIBRATION ON TAKEOFF AND ABORTED TAKEOFF. CLEANED GASCOLATOR AND AGGRESSIVELY FUEL TANKS AND BELLY SUMPS. NO WATER WAS PRESENT. VER
- [SDR 2026FA0000408](https://openairdocs.org/sdr/2026FA0000408), May 19, 2026: IMPULSE COUPLING. UNSERVICEABLE. MAGNETO REMOVED FOR IMPULSE COUPLING INSPECTION. CHAMPION PRODUCED IMPULSE COUPLING FOUND INSTALLED. BOTH RIVETS HOLDING THE PAWLS IN WERE FOUND TO BE BENT.
- [SDR 2026FA0000164](https://openairdocs.org/sdr/2026FA0000164), Mar 10, 2026: CYLINDER HEAD. CRACKED. I HAVE MULTIPLE CRACKED CYLINDERS BETWEEN O-320-D2J AND O-320-D3G ENGINES, THE CYLINDER IS ALL CRACKING IS IN THE SAME LOCATION NEAR THE INTAKE PORT OF THE CYLI
- [SDR 2026FA0000159](https://openairdocs.org/sdr/2026FA0000159), Mar 5, 2026: CYLINDER. CRACKED. POSITION # 1 &2 CYLINDER EXHAUST PORT CRACK FROM THE INBOARD EXHAUST STUD EXTENDING TO THE BACK OF THE PORT. CRACK VISIBLE THROUGH THE FINS. SUPERIOR CYLINDERS 
- [SDR 2025FA0000780](https://openairdocs.org/sdr/2025FA0000780), Nov 24, 2025: CYLINDER. CRACKED. DURING ROUTINE ANNUAL/100HOUR INSPECTIONS 9 CYLINDERS HAVE BEEN FOUND TO BE CRACKED IN THE SAME LOCATION BETWEEN 4 DIFFERENT AIRCRAFT. ON THE LYCOMING O-320 SER
- [SDR 2023FA0000086](https://openairdocs.org/sdr/2023FA0000086), Jan 24, 2023: OIL SYSTEM. LEAKING. N5171H, C172, DECLARED AN EMERGENCY DUE TO SMOKE IN THE COCKPIT AND LANDED WITHOUT INCIDENT. 01/24/2023 1705Z///// MAINTENANCE FOUND THAT OIL CAME OUT OF THE OI
- [SDR 2021FA0000046](https://openairdocs.org/sdr/2021FA0000046), Feb 15, 2021: ENGINE. FIRE. THE ENGINE WAS OVERHAULED ON DECEMBER 10, 2020. IT WAS PLACED INTO SERVICE IN THE ABOVE AIRPLANE JANUARY 22, 2021. POST ENGINE INSTALLATION RUNS AND INITIAL FLI
- [SDR 8HBR20200629023](https://openairdocs.org/sdr/8HBR20200629023), Jun 27, 2020: FLAPPER VALVE. FAILED. CARBURETOR HEAT FLAPPER VALVE MATERIAL FAILURE. A PIECE OF THE CARB HEAT FLAPPER VALVE MATERIAL SEPARATED FROM THE VALVE ASSEMBLY AND GOT STUCK IN THE THROTTLE 
- [SDR 2020FA0000289](https://openairdocs.org/sdr/2020FA0000289), Jun 5, 2020: MOUNT. BROKEN. ENGINE MOUNT EARS ON TOP MOUNT TO AIRFRAME BROKE AT BEND LINE SOMETIME IN THE LIFE OF THE MOUNT. MOUNT FAILED ON START UP & TAXI ALLOWING ENG TO DROP FORWARD AN
- [SDR 2020FA0000076](https://openairdocs.org/sdr/2020FA0000076), Jan 22, 2020: SPARK PLUG. OUT OF TOLERANCE. ACFT EQUIPPED WITH REM 38E SPARK PLUGS, AN UNUSUALLY HIGH EGT READING, CHECKED THE MAGNETOS. SWITCHED FROM BOTH TO LEFT, THE ENGINE WAS RUNNING ON ONLY 3 CYLIND
- [SDR 2020FA0000060](https://openairdocs.org/sdr/2020FA0000060), Jan 14, 2019: PLUG. BROKEN. FLIGHT TRAINING. THE PIN CAP/PLUG BROKE OFF. THEN BROKE THE PISTON.
- [SDR 2018FA0000515](https://openairdocs.org/sdr/2018FA0000515), Dec 11, 2018: SKIN. CRACKED. ON ANNUAL INSPECTION TWO SMALL CRACKS WERE FOUND ON THE TOP OF THE RIGHT WING AND ONE SMALL CRACK ON THE TOP OF THE LEFT WING. THE FIRST CRACK WAS FOUND AT THE 
- [SDR 2018FA0000516](https://openairdocs.org/sdr/2018FA0000516), Dec 11, 2018: SKIN. DAMAGED. ON ANNUAL INSPECTION IT WAS FOUND THAT THE TRAILING EDGE CAP ON THE BOTTOM RIGHT INBOARD LONGITUDINAL EXTERIOR RUNNER HAD TWO POPPED RIVET HEADS AND SURFACE COR
- [SDR 2018FA0000521](https://openairdocs.org/sdr/2018FA0000521), Jul 3, 2018: HOSE. COLLAPSED. INVESTIGATING HIGH OIL TEMPERATURE IT WAS DISCOVERED THAT APPROXIMATELY 4 INCHES OF THE INSIDE LAYER OF THE OIL SUPPLY HOSE TO THE OIL COOLER AT THE ENG END BEG
- [SDR 2018FA0000201](https://openairdocs.org/sdr/2018FA0000201), Jun 29, 2018: CYLINDER. FAILED. DURING A 100 HOUR INSPECTION, DISCOVERED THAT CYLINDERS NR 1 AND 3 HAD COMPRESSIONS IN THE 20PSI RANGE. ATTEMPTS TO CORRECT THIS WERE NOT SUCCESSFUL. CYLINDERS 
- [SDR 2018FA0000522](https://openairdocs.org/sdr/2018FA0000522), Mar 30, 2018: SHAFT. FRACTURED. PILOT REPORTED A SMOOTH 200 RPM DROP ON RIGHT MAGNETO WHEN PERFORMING HIS PRE DEPARTURE ENG CHECK. REPLACING THE POINTS, CAPACITOR, CAM AND CAM GEAR DID NOT RES
- [SDR 2018FA0000001](https://openairdocs.org/sdr/2018FA0000001), Jan 3, 2018: ENGINE. POWER LOSS. MOMENTARY 200 RPM DROP DURING CRUISE. MADE PRECAUTIONARY LANDING, PERFORMED ENGINE RUN UPS AND COULD NOT DUPLICATE THE MALFUNCTION.
- [SDR 2017FA0000168](https://openairdocs.org/sdr/2017FA0000168), Apr 12, 2017: CYLINDER. CRACKED. NUMBER 1 CYLINDER CRACKED, ON CLIMB OUT.
- [SDR 2016FA0000498](https://openairdocs.org/sdr/2016FA0000498), Oct 12, 2016: PISTON RING. OUT OF ALIGNMENT. DURING TAKE OFF, WITH GLIDER IN TOW, AIRCRAFT EXPERIENCED AN UNCOMMANDED ENGINE SHUT DOWN. INVESTIGATION REVEALED THAT THE NR 3 PISTON RINGS WERE NOT INSTALLED 
- [SDR C2XA2016FA0000390](https://openairdocs.org/sdr/C2XA2016FA0000390), Aug 26, 2016: CARBURETOR. LOOSE. COMPLAINT RECEIVED OF ENGINE, DEISELING, ON SHUTDOWN. FOUND CARBURETOR UPPER HALF AND LOWER SEPARATING AT MATING SURFACE. REMOVED CARBURETOR RETIGHTENED SCREWS 
- [SDR 2016FA0000382](https://openairdocs.org/sdr/2016FA0000382), Aug 6, 2016: SCISSOR LINK. CRACKED. WHEN THE ACFT WAS ON FINAL TO RUNWAY 27, THE CONTROLLER THOUGHT THERE WAS SOMETHING THAT DIDN'T LOOK RIGHT WITH THE ACFT, SO HE UTILIZED BINOCULARS AND NOTICED 
- [SDR 2016FA0000391](https://openairdocs.org/sdr/2016FA0000391), Jul 13, 2016: LANDING GEAR. CRACKED. DURING ROUTINE INSPECTION AXLE STUB WAS FOUND CRACKED 75 PERCENT OF THE WAY AROUND. AREA INVOLVED WAS IN THE EAR AREA WHERE THE SCISSORS ATTACH AT THE LOWER END
- [SDR 2016FA0000370](https://openairdocs.org/sdr/2016FA0000370), Jun 9, 2016: ROTOR. CRACKED. AIRCRAFT CAME INTO SHOP FOR ANNUAL INSPECTION AND PILOT MENTIONED THAT ON LAST FLIGHT HE HAD AROUND A 300 RPM DROP ON RT MAGNETO. PILOT LEANED MIXTURE AND PERFO
- [SDR 2016FA0000134](https://openairdocs.org/sdr/2016FA0000134), Mar 15, 2016: FIREWALL. BUCKLED. DURING ANNUAL INSPECTION, FOUND LOWER FIREWALL BUCKLED ON RT SIDE NEAR NLG REINFORCEMENT PLATE.
- [SDR ECPR2016022870382](https://openairdocs.org/sdr/ECPR2016022870382), Feb 28, 2016: DISTRIBUTOR GEAR. BROKEN. WHILE PERFORMING THE PRE-FLIGHT RUN UP, THE RT MAGNETO DROP OFF WAS FOUND TO BE 400 RPM AND ROUGH.
- [SDR 2016FA0000117](https://openairdocs.org/sdr/2016FA0000117), Feb 28, 2016: WIRE HARNESS. CHAFED. AS THE AIRCRAFT WAS CLIMBING THROUGH 400 FEET AGL, THE PILOT DETECTED SMOKE COMING FROM UNDERNEATH THE LT HALF OF THE INSTRUMENT PANEL. THE PILOT DECLARED AN EM
- [SDR 2016FA0000202](https://openairdocs.org/sdr/2016FA0000202), Jan 13, 2016: OIL COOLER. CRACKED. AFTER DEPARTURE, ACFT HAD SMOKE IN THE COCKPIT DUE TO A SPLIT IN THE OIL COOLER WHICH WAS GETTING OIL ON THE MUFFLER, CAUSING SMOKE. REPLACE PART WITH NEW PMA P
- [SDR 2015FA0000463](https://openairdocs.org/sdr/2015FA0000463), Sep 25, 2015: NEEDLE. DISLODGED. IDLE MIXTURE ADJUSTMENT KNOB AND NEEDLE FELL OUT OF THE CARBURETOR. 2ND OCCURRENCE.
- [SDR 2015FA0000389](https://openairdocs.org/sdr/2015FA0000389), Jul 8, 2015: SHAFT. SHEARED. THE ROTOR SHAFT THAT HOLDS THE GEAR ON ROTOR, PN: M3548 SHEARED OFF AT THE BASE OF THE ROTOR SHAFT. THIS RESULTED IN THE GEAR JAMMING UP INSIDE THE MAGNETO, WHI
- [SDR KC2R1202201449575](https://openairdocs.org/sdr/KC2R1202201449575), Dec 2, 2014: IMPULSE COUPLING. CRACKED. DURING PERFORMANCE OF MAGNETO "500 HOUR INSPECTION", IMPULSE COUPLING WAS FOUND TO BE CRACKED AT THE TAPER SEAT AND AT BOTH AXLE RIVET LOCATIONS ON BASE PLATE O
- [SDR ECQR2014092500130](https://openairdocs.org/sdr/ECQR2014092500130), Sep 8, 2014: MAGNETO. FAILED. ENGINE STALLED AFTER LANDING AND ENGINE STALLED TAXIING ON RUNWAY, TWICE. REPLACED CARBURETOR AT 206.3 HRS. AFTER 3RD WRITE UP, BOTH MAGNETOS WERE REMOVED. LT M
- [SDR ECQR2014092500131](https://openairdocs.org/sdr/ECQR2014092500131), Sep 8, 2014: MAGNETO. FAILED. THE ENGINE O/H AND INSTALLED 1/24/2014. ON 8/12/14 ENGINE STALLED AFTER LANDING AND ENGINE STALLED TAXIING ON RUNWAY, TWICE. 8/22/14, 9/5/14, REPLACED CARBURETO
- [SDR ECPR201407080466](https://openairdocs.org/sdr/ECPR201407080466), Jun 19, 2014: CARBURETOR. MALFUNCTIONED. AFTER THE SECOND LANDING, THE THROTTLE WAS PULLED BACK BUT THE ENGINE RPM WOULD NOT GO BELOW 1900 RPM. UPON OPS AND VISUAL INSPECTION IT WAS DETERMINED THAT THE
- [SDR 2014FA0000262](https://openairdocs.org/sdr/2014FA0000262), Apr 23, 2014: TUBE. PUNCTURED. PIN HOLE IN SIDE OF INNER TUBE, NOSE GEAR.
- [SDR YAAA20140109001](https://openairdocs.org/sdr/YAAA20140109001), Jan 9, 2014: CRANKCASE. CRACKED. FOUND ENG LT CRANKCASE ASSEMBLY CRACKED DURING MAINTENANCE PRE-FLIGHT. REMOVED ENG & SENT CRANKCASE ASSEMBLY REPLACEMENT.
- [SDR 2013FA0000362](https://openairdocs.org/sdr/2013FA0000362), Jun 20, 2013: SEAT FRAME. CRACKED. SEAT WAS FOUND CRACKED WHERE SEAT BASE FRAMES EXTEND TO ATTACHMENT POINTS.
- [SDR CA130405003](https://openairdocs.org/sdr/CA130405003), Mar 30, 2013: IMPULSE COUPLING. INOPERATIVE. (CAN) DURING PREFLIGHT RUNUP A HIGH RPM DROP OFF WAS REPORT ON LT MAGNETO. NOT IMPULSE COUPLING ENGAGEMENT WAS NOTED DURING MAINTENANCE INSPECTION. UPON REMOVAL
- [SDR 2013FA0000142](https://openairdocs.org/sdr/2013FA0000142), Feb 24, 2013: AXLE. CRACKED. LEFT WHEEL AXLE AND WHEEL SEPARATED FROM THE GEAR TRUSS.
- [SDR 2013FA0000154](https://openairdocs.org/sdr/2013FA0000154), Feb 19, 2013: YOKE. FAILED. DURING PREFLIGHT, PILOT COULDN`T MOVE ELEVATOR FLIGHT CONTROLS. MX FOUND WELD ASSY YOKE BROKEN OFF AND CORRODED INSIDE THE TUBE.
- [SDR 2012FA0000790](https://openairdocs.org/sdr/2012FA0000790), Dec 2, 2012: STRUCTURE. CORRODED. THE HORIZONTAL STABILIZER MAIN SPAR ON THIS ACFT CAN NOT BE INSPECTED BY NORMAL MEANS AS IT IS A COMPLETELY SEALED UNIT WITH NO INSPECTION DOORS, HOLES, OR WIND
- [SDR ECPR201211160001](https://openairdocs.org/sdr/ECPR201211160001), Nov 2, 2012: VALVE SPRING. BROKEN. ACFT EXPERIENCED ROUGH RUNNING ENGINE INFLIGHT WITH LOSS OF MAX RPM. INSPECTION AFTER PRECAUTIONARY LANDING FOUND LOW COMPRESSION ON THE NR 2 CYLINDER. FURTHER 
- [SDR 2012FA0000728](https://openairdocs.org/sdr/2012FA0000728), Oct 15, 2012: FLOAT. WRONG PART. CARBURETOR WAS SUBMITTED FOR INSPECTION. CUSTOMER STATED THE CARBURETOR WAS UNRESPONSIVE AT IDLE SHUT OFF. ALSO STATED BACKFIRING. DURING INSPECTION, NOTED THE 
- [SDR V0XR20120905J0073](https://openairdocs.org/sdr/V0XR20120905J0073), Sep 4, 2012: FITTING. CORRODED. RIGHT OTBD INTERCOSTAL FLOORMOUNT MACHINE FITTING IS CORRODED. R & R OTBD INTERCOSTAL FLOORMOUNT MACHINE FITTING IAW SRM 51-40-11 AND 51-42-21.
- [SDR 2012FA0000602](https://openairdocs.org/sdr/2012FA0000602), Aug 15, 2012: CIRCUIT BREAKER. INOPERATIVE. NOTED A CLICKING ACCOMPANIED BY AMMETER INDICATING A HEAVY DISCHARGE. PROBLEM ISOLATED TO A CIRCUIT BREAKER THAT WASN`T TRIPPING THE INDICATOR BUTTON AND WAS WO
- [SDR 2012FA0000573](https://openairdocs.org/sdr/2012FA0000573), Aug 8, 2012: SENDING UNIT. MISINSTALLED. FUEL SENDERS, SERVICED, LEAK FUEL THROUGH THE MOUNTING FLANGE, WHICH IS BOLTED, OUTSIDE OF TANK, TO THE TOP OF THE FUEL TANK.
- [SDR 2012FA0000453](https://openairdocs.org/sdr/2012FA0000453), Jul 3, 2012: CYLINDER. CRACKED. THE NR 4 CYLINDER BAFFLE CRACKS TOO OFTEN,SOMETIMES IN AS LITTLE AS 100HR. THIS BAFFLE SUPPORTS THE OTBD SIDE OF THE OIL COOLER, NEW PART FROM STOCK HAD A .025 
- [SDR 2012FA0000630](https://openairdocs.org/sdr/2012FA0000630), Jun 26, 2012: UNKNOWN. FIRE. ACFT WAS COMPLETELY DESTROYED AS A RESULT OF AN IN-FLIGHT FIRE AND RESULTING POST CRASH FIRE. THE FIRE APPEARS TO HAVE STARTED IN THE COCKPIT FROM AN UNKNOWN IG
- [SDR 2012FA0000305](https://openairdocs.org/sdr/2012FA0000305), Apr 25, 2012: BRAKE ASSY. CRACKED. PART HAS A CRACK AT 1 OF THE BLEEDER PORTS. IT MAY HAVE BEEN FROM COMPONENT FAILURE, BUT IT MAY WELL HAVE BEEN CAUSED BY OVER-TIGHTENING.
- [SDR 2012FA0000212](https://openairdocs.org/sdr/2012FA0000212), Feb 23, 2012: SLEEVE. MISMANUFACTURED. FUEL LEAK OCCURED AT RIGHT AFT FUEL TANK OUTLET FITTING FUEL LINE FLARED FITTING JOINT. FUEL LINE WAS MANUFACTURED WITH A DEFECTIVE SLEEVE WITH A SHOULDER OF .0
- [SDR 2011FA0000776](https://openairdocs.org/sdr/2011FA0000776), Dec 6, 2011: BATTERY. EXPLODED. ON ENGINE START-UP A LOUD POP WAS HEARD FROM UNDER THE COWL. INVESTIGATION SHOWED THAT THE BATTERY, A 24 VOLT, MODEL 243 INSTALLED IN 2007, HAD EXPLODED UPWARD.

All 346: https://openairdocs.org/engine/aerotec-o-320-series/reports.md

## STCs that may be installed (OpenAirDocs) (70, first 50)

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. Lists O-320-A1A
- [STC SE00825WI](https://openairdocs.org/stc/SE00825WI): Installation of Specialty Products Spin-on oil filter on Lycoming Engines. B & C Specialty Products Inc. Lists O-320-A1A
- [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
- [STC SE208SO](https://openairdocs.org/stc/SE208SO): Installation of ice indicator in the carburetor. LegacySTC.com
- [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd. Lists O-320-A1A
- [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal. Ly-Con Rebuilding Company. Lists O-320-A1A
- [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc. Lists O-320-A1A
- [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. Lists O-320-A1A
- [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
- [STC SE03232CH](https://openairdocs.org/stc/SE03232CH): Installation of Engine Preheat Kit p/n TA2925-1 for 115 volt application. Hartzell Propeller Inc. Lists O-320-A1A
- [STC SE4-1638](https://openairdocs.org/stc/SE4-1638): Installation of one Roto-Master Turbocharger Model No. 3DT5FF10J2, P/N 600572-00 (formerly Rajay Model No. 315F10, P/N RJ0080-100, -101, or -102). TALCO Aviation. Lists O-320-A Series
- [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp. Lists O-320-A1A
- [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. Lists O-320-A1A
- [STC SE8628SW](https://openairdocs.org/stc/SE8628SW): Installation of oil nozzles for lubrication of cam and filters. Cygnet Aerospace Corp. Lists O-320-A1A
- [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. Lists O-320-A1A
- [STC SE1051SW](https://openairdocs.org/stc/SE1051SW): Convert straight mount engine to dynafocal mount configuration. Continental Motors, Inc. Lists O-320-A2B
- [STC SE1339SW](https://openairdocs.org/stc/SE1339SW): Modify pistons to Drawings 11007 and 11015; piston rings. Continental Motors, Inc. Lists O-320-D1A
- [STC SE4408SW](https://openairdocs.org/stc/SE4408SW): Miscellaneous engine cylinder replacement parts. Continental Motors, Inc
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc
- [STC SE00218NY](https://openairdocs.org/stc/SE00218NY): Replacement of Lycoming starter with SKY-TEC 12 volt starter installed. Hartzell Engine Technologies, LLC
- [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. Lists O-320-A1A
- [STC SE00357NY](https://openairdocs.org/stc/SE00357NY): Replacement of Lycoming starter with SKY-TEC 24-volt starter installed. Hartzell Engine Technologies, LLC
- [STC SE2901NM](https://openairdocs.org/stc/SE2901NM): Lycoming valve cover gasket. Real Gaskets Tennessee. Lists O-320-A1A
- [STC SE00590DE](https://openairdocs.org/stc/SE00590DE): Installation of modified Lubricated Camshaft. Centri-Lube Technologies LLC. Lists O-320-A1A
- [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. Lists O-320-A Series
- [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. Lists O-320-A1A
- [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. Lists O-320-A1A
- [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. Lists O-320-A1A
- [STC SE3692SW-D](https://openairdocs.org/stc/SE3692SW-D): Increase 5 minute takeoff maximum power rating to 160 horsepower. RAM Aircraft Limited Partnership. Lists O-320-E2D
- [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. Lists O-320-B1A
- [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. Lists O-320-A1A
- [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. Lists O-320-A1A
- [STC SE8987SW](https://openairdocs.org/stc/SE8987SW): Modify engine IAW RAM Aircraft Corp Drawing No. 1724. Minimum fuel grade is 100/100LL. RAM Aircraft Limited Partnership. Lists O-320-E2A
- [STC SE925GL](https://openairdocs.org/stc/SE925GL): Installation of Shadin Co. fuel flow transducer. Shadin Company Inc. Lists O-320-A2B
- [STC SE01930NY](https://openairdocs.org/stc/SE01930NY): Installation of Casper Labs 90 degree oil filter housing adapter. Casper Labs Inc. Lists O-320-A1A
- [STC SE02157NY](https://openairdocs.org/stc/SE02157NY): Installation and maintenance of new roller-bearing lifters and camshaft. Air P Techno Inc. Lists O-320-H2AD
- [STC SE1779NM](https://openairdocs.org/stc/SE1779NM): Installation of Precise Flight, Inc. Standby Vacuum System SVS III. Precise Flight Inc. Lists O-320-A1A
- [STC SE02207AK](https://openairdocs.org/stc/SE02207AK): Limited to installation on model O-320-E2D, serial number 24305-27A ONLY. Hot Springs Aviation. Lists O-320-E2D
- [STC SE5743NM](https://openairdocs.org/stc/SE5743NM): Intallation of adapter for externally mounted oil filter. Aviation Development Corporation. Lists O-320-A1A
- [STC SE2315NM](https://openairdocs.org/stc/SE2315NM): Modification of Lycoming 0-320-A2B engine to 160 HP configuration. Aero Recip Alaska, LLC. Lists O-320-A2B
- [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
- [STC SE682NE](https://openairdocs.org/stc/SE682NE): Conversion of Model 0-320-E2G engine to high compression. Precision Engine. Lists O-320-E2G
- [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
- [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-A Series
- [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation. Lists O-320-A1A
- [STC SE1226CE](https://openairdocs.org/stc/SE1226CE): Modify engines for a 160 horsepower rating on 100/130 minimum grade fuel. Ly-Con Rebuilding Company. Lists O-320-A2B
- [STC SE00252SE](https://openairdocs.org/stc/SE00252SE): Modification for a 160 hp rating on 100/100LL minimum grade fuel. Ly-Con Rebuilding Company. Lists O-320-A2B
- [STC SE8023SW](https://openairdocs.org/stc/SE8023SW): Installation and usage of AEROSHELL. Shell Development Co
- [STC SE702NE](https://openairdocs.org/stc/SE702NE): Modification of crankcase tappet bores to accommodate large tappets. Mattituck Airbase, Inc. Lists O-320-H Series
- [STC SE4634NM](https://openairdocs.org/stc/SE4634NM): Installation of oil filter adapter fabricated. Univ of Alaska Fairbanks. Lists O-320-A1A

All 70: https://openairdocs.org/engine/aerotec-o-320-series/stcs.md

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