# Lycoming O-320-D2A

- Type: Engine model (FAA registry)
- Registry code: 42150
- Manufacturer (registry): LYCOMING
- Model: O-320-D2A
- Engine type: Reciprocating
- Power: 160 hp
- Data sheet: [TCDS E-274](https://openairdocs.org/tcds/E-274) (OpenAirDocs)
- Holder: Lycoming Engines
- Installed in: 72 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-o-320-d2a

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 98-02-08](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 (72, first 50)

- [N103LF](https://openairdocs.org/aircraft/N103LF): [Chang Tien Chien](https://openairdocs.org/faa-owner/CHANG%20TIEN%20CHIEN), [Port Orange, FL](https://openairdocs.org/faa-place/FL/Port%20Orange), built 2006, S/N 91048
- [N112Y](https://openairdocs.org/aircraft/N112Y): [Medeiros Joel](https://openairdocs.org/faa-owner/MEDEIROS%20JOEL), [Lumberton, NJ](https://openairdocs.org/faa-place/NJ/Lumberton), built 2011, S/N 9000-1
- [N123DR](https://openairdocs.org/aircraft/N123DR): [Ritson Craig E](https://openairdocs.org/faa-owner/RITSON%20CRAIG%20E), [Weirsdale, FL](https://openairdocs.org/faa-place/FL/Weirsdale), built 2023, S/N 70822
- [N125GC](https://openairdocs.org/aircraft/N125GC): [Chi Aerospace Inc](https://openairdocs.org/faa-owner/CHI%20AEROSPACE%20INC), [Portsmouth, NH](https://openairdocs.org/faa-place/NH/Portsmouth), built 2007, S/N 160A-07011
- [N12HE](https://openairdocs.org/aircraft/N12HE): [Olafsen George F](https://openairdocs.org/faa-owner/OLAFSEN%20GEORGE%20F), [Greeneville, TN](https://openairdocs.org/faa-place/TN/Greeneville), built 2007, S/N 91367
- [N13VA](https://openairdocs.org/aircraft/N13VA): [Mcgrew Kevin P](https://openairdocs.org/faa-owner/MCGREW%20KEVIN%20P), [Red Oak, IA](https://openairdocs.org/faa-place/IA/Red%20Oak), built 2015, S/N 90823
- [N13WK](https://openairdocs.org/aircraft/N13WK): [Knight Wallace R II](https://openairdocs.org/faa-owner/KNIGHT%20WALLACE%20R%20II), [Collierville, TN](https://openairdocs.org/faa-place/TN/Collierville), built 2007, S/N 200401
- [N161D](https://openairdocs.org/aircraft/N161D): [Fulper Lester D](https://openairdocs.org/faa-owner/FULPER%20LESTER%20D), [Clearwater, FL](https://openairdocs.org/faa-place/FL/Clearwater), built 2024, S/N 5745
- [N1695](https://openairdocs.org/aircraft/N1695): [Mcvey Steven A](https://openairdocs.org/faa-owner/MCVEY%20STEVEN%20A), [Versailles, KY](https://openairdocs.org/faa-place/KY/Versailles), built 2007, S/N 91026
- [N174RV](https://openairdocs.org/aircraft/N174RV): [Lutgring Thomas J](https://openairdocs.org/faa-owner/LUTGRING%20THOMAS%20J), [Parma, OH](https://openairdocs.org/faa-place/OH/Parma), built 2007, S/N 90189
- [N189DW](https://openairdocs.org/aircraft/N189DW): [Aurai Aeronautical Specialties LLC](https://openairdocs.org/faa-owner/AURAI%20AERONAUTICAL%20SPECIALTIES%20LLC), [Warner Robins, GA](https://openairdocs.org/faa-place/GA/Warner%20Robins), built 2021, S/N 90080
- [N194WE](https://openairdocs.org/aircraft/N194WE): [Nightingale Jeffrey R](https://openairdocs.org/faa-owner/NIGHTINGALE%20JEFFREY%20R), [Gallatin, TN](https://openairdocs.org/faa-place/TN/Gallatin), built 2007, S/N 90259
- [N19HV](https://openairdocs.org/aircraft/N19HV): [Olin Charles W](https://openairdocs.org/faa-owner/OLIN%20CHARLES%20W), [Union, WA](https://openairdocs.org/faa-place/WA/Union), built 2006, S/N 90946
- [N202DL](https://openairdocs.org/aircraft/N202DL): [Leedham Donald R](https://openairdocs.org/faa-owner/LEEDHAM%20DONALD%20R), [Elk River, MN](https://openairdocs.org/faa-place/MN/Elk%20River), built 2007, S/N 102956
- [N208KK](https://openairdocs.org/aircraft/N208KK): [Thomas Randall Darren](https://openairdocs.org/faa-owner/THOMAS%20RANDALL%20DARREN), [Exeter, CA](https://openairdocs.org/faa-place/CA/Exeter), built 2021, S/N E571
- [N209SC](https://openairdocs.org/aircraft/N209SC): [International Air Services Inc Trustee](https://openairdocs.org/faa-owner/INTERNATIONAL%20AIR%20SERVICES%20INC%20TRUSTEE), [Carson City, NV](https://openairdocs.org/faa-place/NV/Carson%20City), built 1976, S/N 28-7625115
- [N276RV](https://openairdocs.org/aircraft/N276RV): built 2016, S/N 20471
- [N295PC](https://openairdocs.org/aircraft/N295PC): [Fleming Charles R](https://openairdocs.org/faa-owner/FLEMING%20CHARLES%20R), [Merritt Island, FL](https://openairdocs.org/faa-place/FL/Merritt%20Island), built 2003, S/N 54864
- [N313RV](https://openairdocs.org/aircraft/N313RV): [Busbea Shawn](https://openairdocs.org/faa-owner/BUSBEA%20SHAWN), [Conway, AR](https://openairdocs.org/faa-place/AR/Conway), built 2008, S/N 11366
- [N314PT](https://openairdocs.org/aircraft/N314PT): [Strong Thomas W](https://openairdocs.org/faa-owner/STRONG%20THOMAS%20W), [Rigby, ID](https://openairdocs.org/faa-place/ID/Rigby), built 2006, S/N 90489
- [N318MB](https://openairdocs.org/aircraft/N318MB): [Henderson Michael E](https://openairdocs.org/faa-owner/HENDERSON%20MICHAEL%20E), [Edmonds, WA](https://openairdocs.org/faa-place/WA/Edmonds), built 2006, S/N 5661
- [N320ST](https://openairdocs.org/aircraft/N320ST): [Guaglione Anthony](https://openairdocs.org/faa-owner/GUAGLIONE%20ANTHONY), [El Dorado Hills, CA](https://openairdocs.org/faa-place/CA/El%20Dorado%20Hills), built 2006, S/N S-10002
- [N337CW](https://openairdocs.org/aircraft/N337CW): [Webb Peter C](https://openairdocs.org/faa-owner/WEBB%20PETER%20C), [Rockport, ME](https://openairdocs.org/faa-place/ME/Rockport), built 2010, S/N 90811
- [N343PC](https://openairdocs.org/aircraft/N343PC): [Cloutier Philip L](https://openairdocs.org/faa-owner/CLOUTIER%20PHILIP%20L), [Sparks, NV](https://openairdocs.org/faa-place/NV/Sparks), built 2015, S/N 1655
- [N3446](https://openairdocs.org/aircraft/N3446): [Benjamin Harold E](https://openairdocs.org/faa-owner/BENJAMIN%20HAROLD%20E), [New York, NY](https://openairdocs.org/faa-place/NY/New%20York), built 2012, S/N 3446
- [N345HU](https://openairdocs.org/aircraft/N345HU): [Skydotcom LLC](https://openairdocs.org/faa-owner/SKYDOTCOM%20LLC), [Inver Grove Height, MN](https://openairdocs.org/faa-place/MN/Inver%20Grove%20Height), built 1996, S/N 1312
- [N359HW](https://openairdocs.org/aircraft/N359HW): [Chenier Anthony D](https://openairdocs.org/faa-owner/CHENIER%20ANTHONY%20D), [Longview, WA](https://openairdocs.org/faa-place/WA/Longview), built 2006, S/N 90035
- [N365DL](https://openairdocs.org/aircraft/N365DL): [Soehner Harold D](https://openairdocs.org/faa-owner/SOEHNER%20HAROLD%20D), [Winslow, AZ](https://openairdocs.org/faa-place/AZ/Winslow), built 2009, S/N DAL001
- [N370DL](https://openairdocs.org/aircraft/N370DL): [Lee David](https://openairdocs.org/faa-owner/LEE%20DAVID), [Skaneateles, NY](https://openairdocs.org/faa-place/NY/Skaneateles), built 2024, S/N 02210162
- [N376E](https://openairdocs.org/aircraft/N376E): [Shepard Rockwood S](https://openairdocs.org/faa-owner/SHEPARD%20ROCKWOOD%20S), [Williamston, MI](https://openairdocs.org/faa-place/MI/Williamston), built 2020, S/N 92094
- [N38KP](https://openairdocs.org/aircraft/N38KP): [Aero Equity LLC](https://openairdocs.org/faa-owner/AERO%20EQUITY%20LLC), [Boise, ID](https://openairdocs.org/faa-place/ID/Boise), built 2006, S/N S-0014
- [N38RG](https://openairdocs.org/aircraft/N38RG): [Gee Kevin D](https://openairdocs.org/faa-owner/GEE%20KEVIN%20D), [Chandler, TX](https://openairdocs.org/faa-place/TX/Chandler), built 2020, S/N 72564
- [N417CT](https://openairdocs.org/aircraft/N417CT): [Gleaton Benjamin F](https://openairdocs.org/faa-owner/GLEATON%20BENJAMIN%20F), [Waycross, GA](https://openairdocs.org/faa-place/GA/Waycross), built 2007, S/N 91365
- [N417L](https://openairdocs.org/aircraft/N417L): [Lutes David W](https://openairdocs.org/faa-owner/LUTES%20DAVID%20W), [Berryton, KS](https://openairdocs.org/faa-place/KS/Berryton), built 2000, S/N 22952
- [N418ST](https://openairdocs.org/aircraft/N418ST): [Doan Michael C](https://openairdocs.org/faa-owner/DOAN%20MICHAEL%20C), [Phoenix, AZ](https://openairdocs.org/faa-place/AZ/Phoenix), built 2018, S/N MR411
- [N459RV](https://openairdocs.org/aircraft/N459RV): [Benjamin David J](https://openairdocs.org/faa-owner/BENJAMIN%20DAVID%20J), [La Porte, IN](https://openairdocs.org/faa-place/IN/La%20Porte), built 2009, S/N 021207
- [N46362](https://openairdocs.org/aircraft/N46362): [Weber Scott](https://openairdocs.org/faa-owner/WEBER%20SCOTT), [Hastings, MN](https://openairdocs.org/faa-place/MN/Hastings), built 2001, S/N 0018
- [N506PC](https://openairdocs.org/aircraft/N506PC): [Shettlesworth Ryan C](https://openairdocs.org/faa-owner/SHETTLESWORTH%20RYAN%20C), [Bloomington, IN](https://openairdocs.org/faa-place/IN/Bloomington), built 1992, S/N 1465
- [N511PC](https://openairdocs.org/aircraft/N511PC): [Clear Skies Avionics Inc](https://openairdocs.org/faa-owner/CLEAR%20SKIES%20AVIONICS%20INC), [Clearwater, FL](https://openairdocs.org/faa-place/FL/Clearwater), built 1993, S/N 1539
- [N5121K](https://openairdocs.org/aircraft/N5121K): [Tebbe Francis L](https://openairdocs.org/faa-owner/TEBBE%20FRANCIS%20L), [Maryville, IL](https://openairdocs.org/faa-place/IL/Maryville), built 2007, S/N 1308
- [N51HS](https://openairdocs.org/aircraft/N51HS): [Gilbert Joe M](https://openairdocs.org/faa-owner/GILBERT%20JOE%20M), [Sapulpa, OK](https://openairdocs.org/faa-place/OK/Sapulpa), built 2006, S/N 91126
- [N53PD](https://openairdocs.org/aircraft/N53PD): [Hume James W](https://openairdocs.org/faa-owner/HUME%20JAMES%20W), [Valley View, TX](https://openairdocs.org/faa-place/TX/Valley%20View), built 1987, S/N 1202
- [N54WY](https://openairdocs.org/aircraft/N54WY): [Bernegger Mark S](https://openairdocs.org/faa-owner/BERNEGGER%20MARK%20S), [West Point, MS](https://openairdocs.org/faa-place/MS/West%20Point), built 2013, S/N WF0002
- [N5578F](https://openairdocs.org/aircraft/N5578F): [Jarvis Trent A](https://openairdocs.org/faa-owner/JARVIS%20TRENT%20A), [Apo, AE](https://openairdocs.org/faa-place/AE/Apo), built 1972, S/N FA-200-180
- [N580SK](https://openairdocs.org/aircraft/N580SK): [Eary Enterprises LLC](https://openairdocs.org/faa-owner/EARY%20ENTERPRISES%20LLC), [Peoria, AZ](https://openairdocs.org/faa-place/AZ/Peoria), built 2006, S/N S-0013
- [N61ND](https://openairdocs.org/aircraft/N61ND): [Pilot Partners LLC](https://openairdocs.org/faa-owner/PILOT%20PARTNERS%20LLC), [Saint Augustine, FL](https://openairdocs.org/faa-place/FL/Saint%20Augustine), S/N 25675
- [N624TF](https://openairdocs.org/aircraft/N624TF): [Dominy Kenneth W](https://openairdocs.org/faa-owner/DOMINY%20KENNETH%20W), [Ave Maria, FL](https://openairdocs.org/faa-place/FL/Ave%20Maria), built 2006, S/N 5405
- [N625DK](https://openairdocs.org/aircraft/N625DK): [Knight Doug B](https://openairdocs.org/faa-owner/KNIGHT%20DOUG%20B), [Jefferson, OR](https://openairdocs.org/faa-place/OR/Jefferson), built 2006, S/N 90625
- [N638SA](https://openairdocs.org/aircraft/N638SA): [Johnson James W](https://openairdocs.org/faa-owner/JOHNSON%20JAMES%20W), [Panama City, FL](https://openairdocs.org/faa-place/FL/Panama%20City), built 2005, S/N S-0001
- [N670B](https://openairdocs.org/aircraft/N670B): [Beck Mark A](https://openairdocs.org/faa-owner/BECK%20MARK%20A), [Fort Wayne, IN](https://openairdocs.org/faa-place/IN/Fort%20Wayne), built 2007, S/N 60176

All 72: https://openairdocs.org/engine/lycoming-o-320-d2a/aircraft.md

## NTSB investigations (3)

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 WPR25LA106](https://openairdocs.org/ntsb/WPR25LA106), Feb 27, 2025: Aviat A-1 (N345HU), Heber City, UT, substantial damage. Probable cause: The pilot’s loss of directional control during landing, which resulted in a collision with a snowbank.
- [NTSB GAA20CA080](https://openairdocs.org/ntsb/GAA20CA080), Nov 12, 2019: Symphony Aircraft Ind SA (N844SA), Fitzgerald, GA, substantial damage. Probable cause: The airplane’s impact with a deer while landing.
- [NTSB GAA16CA344](https://openairdocs.org/ntsb/GAA16CA344), Jun 25, 2016: Benjamin Harold E RV-4 (N3446), Fitchburg, MA, substantial damage. Probable cause: The pilot's failure to maintain directional control upon landing, which resulted in a runway excursion followed by impact with terrain.

## FAA accident and incident reports (9)

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 20250227001699A](https://openairdocs.org/incident/20250227001699A), Feb 27, 2025: Aviat Inc A-1 (N345HU), Heber City, UT, Substantial damage. The private pilot during his landing phase noticed the aircraft right wing was higher and corrected accordingly, the aircraft then drifted to the left making…
- [Accident 20191111021019A](https://openairdocs.org/incident/20191111021019A), Nov 11, 2019: Symphony Aircraft Ind Inc SA 160 (N844SA), Fitzgerald, GA, Substantial damage. On Monday November 11, 2019, at approximately 7:15 p.m. eastern daylight time, a 2006 Symphony, model sa 160 with registration N844SA sustained major damage as…
- [Incident 20170610008229I](https://openairdocs.org/incident/20170610008229I), Jun 10, 2017: Symphony Aircraft Ind Inc SA 160 (N580SK), Abilene, TX, No damage. On June 6, 2017, N580SK experienced a flat main tire while touching down in Abilene, Texas (abi). The pilot suffered no injuries and no damage to aircraft. The…
- [Incident 20161121021559I](https://openairdocs.org/incident/20161121021559I), Nov 21, 2016: Veenker Harlen G VANS ACFT RV9A (N19HV), Shelton, WA, Minor damage. On landing as nose wheel touched runway, the occupants of the aircraft felt the aircraft tail raise and nose lower slightly. As the landing roll-out progress,…
- [Incident 20160911015609I](https://openairdocs.org/incident/20160911015609I), Sep 11, 2016: Bauer Frederick Ronald Jr VANS RV3B (N313RV), Lakeview, AR, Minor damage. On September 11, 2016, at approximately 1335 CDT, a vans RV3B, N313RV, at the time of this incident. Visual meteorological conditions prevailed at the time and…
- [Accident 20160625006669A](https://openairdocs.org/incident/20160625006669A), Jun 25, 2016: Benjamin Harold E RV-4 (N3446), Fitchburg, MA, Substantial damage. The pilot with one tandem passenger on board, landed the aircraft at the threshold of runway number 20 at 2010 zulu hours at (fit). Upon roll-out at the…
- [Incident 20040210002459I](https://openairdocs.org/incident/20040210002459I), Feb 10, 2004: Socata TB9CTAMPICO (N506PC), Springfield, IL, Minor damage. (-23) [privacy data omitted] on February 10, 2004, N506PC, a TB9 operated by a student pilot, was conducting a landing on runway 31 at Capital Airport,…
- [Incident 20010320005019I](https://openairdocs.org/incident/20010320005019I), Mar 20, 2001: Socata TB9 (N511PC), Cahokia, IL. (-23) While attempting this session the third touch & go landing with a strong crosswind from the right, pilot lost control of the a/c on landing. Upon…
- [Incident 20001104018489I](https://openairdocs.org/incident/20001104018489I), Nov 4, 2000: Socata TB9 (N511PC), Champaign-Urban, IL, Minor damage. (-23) The pilot in command of N511PC, reported that the aircraft began to porpoise after initial contact with the runway which resulted in a flat nose tire and…

## Service difficulty reports (67, newest 50)

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

- [SDR PO4R2016FA0000012](https://openairdocs.org/sdr/PO4R2016FA0000012), Oct 15, 2015: CYLINDER HEAD. SEPARATED. 2 SECONDS AFTER FULL POWER APPLICATION FOR TAKEOFF, A LOUD BANG WAS HEARD AND THE PILOT DETECTED SIGNIFICANT VIBRATION IMMEDIATELY. PILOT ABORTED TAKEOFF, LIMPE
- [SDR CA121205007](https://openairdocs.org/sdr/CA121205007), Dec 4, 2012: ELT. NO TEST. (CAN) WHILE TESTING THE ELT ON ITS ANNUAL CERTIFICATION IAW CAR 571, APPENDIX-G THE TRANSMITTING POWER OF THE UNIT STARTED. OK, BUT WITHIN THE 3 MINUTES THE TRA
- [SDR 2011FA0000367](https://openairdocs.org/sdr/2011FA0000367), Jun 14, 2011: ATTACH FITTING. BROKEN. DURING REMOVAL OF INTERIOR UPHOLSTERY FOR OTHER MX, FOUND THAT THE LT FORWARD OTBD MLG ATTACHMENT BOLT FITTING THAT IS PART OF THE TUBE FUSELAGE WAS BROKEN COMP
- [SDR 2010FA0000460](https://openairdocs.org/sdr/2010FA0000460), May 2, 2010: PRESSURE SWITCH. BINDING. LANDING GEAR DID NOT EXTEND AND GEAR-UP LANDING WAS MADE. POST INCIDENT INSPECTION AND OPERATION CHECK DEMONSTRATED REPEATABLE FAILURE CONDITION. HYDRAULIC PRES
- [SDR CA100625004](https://openairdocs.org/sdr/CA100625004), Feb 28, 2010: CRANKSHAFT. BROKEN. (CAN) ON FEB 28/10, DURING CRUISE FLIGHT ENGINE DEVELOPED A VIBRATION FOLLOWED WITHIN SECONDS BY A TOTAL SEIZURE. AIRCRAFT WAS LANDED WITHOUT INJURY TO PILOT OR
- [SDR 2008FA0000544](https://openairdocs.org/sdr/2008FA0000544), Jul 30, 2008: ALTERNATOR. FAILED. ALTERNATOR WILL FAIL ABOVE 2500 RPM, LOW VOLTAGE LIGHT COMES ON AND THE VOLTMETER INDICATES BATTERY VOLTAGE. OPS CHECK DURING GROUND RUNS ARE NORMAL MAX RPM DUR
- [SDR 2007FA0000784](https://openairdocs.org/sdr/2007FA0000784), Jul 8, 2007: FLOAT. FAILED. THE ENGINE DIED ON FINAL TO AIRPORT, PUMPED THE THROTTLE, AND THE ENGINE STARTED RUNNING AGAIN, RETARDED THROTTLE, AND THE ENGINE DIED AGAIN. LANDED WITHOUT INC
- [SDR CA060426001](https://openairdocs.org/sdr/CA060426001), Apr 5, 2006: MOUNT. DAMAGED. (CAN) INSPECTION FOR ISSUANCE OF A C OF A AIRCRAFT TOTAL TIME: 2.8 HRS DURING THE INSPECITON OF THIS AIRCRAFT BY CIVIL AVIATION INSPECTOR, IT WAS NOTED THAT AN 
- [SDR CA040823004](https://openairdocs.org/sdr/CA040823004), Aug 20, 2004: CARBURETOR. FAILED. (CAN) DURING A LOCAL FLIGHT, PILOT REPORTED THAT THE THROTTLE WAS BINDING. AIRCRAFT LANDED SAFELY. THE MAINTENANCE INVESTIGATION INDICATED THAT THE CARBURETOR B
- [SDR CA031028004](https://openairdocs.org/sdr/CA031028004), Oct 16, 2003: VOLT REGULATOR. FAILED. (CAN) VOLTAGE REGULATOR FAILED AND ALSO CAUSED DAMAGE TO THE ALTERNATOR DIODES. THE ALTERNATOR DIODES WERE REPLACED, AND THE VOLTAGE REGULATOR REPLACED WITH A N
- [SDR CA030409014](https://openairdocs.org/sdr/CA030409014), Apr 8, 2003: BELLCRANK. CRACKED. (CAN) FOUND BRACKET CRACKED FOR A LENGTH OF ABOUT 2 CENTIMETERS JUST BELOW FORWARD BOLT HOLE. DEFECT CAN ONLY BE SEEN WITH INSPECTION MIRROR FROM OUTBOARD INSPE
- [SDR AUS20021166](https://openairdocs.org/sdr/AUS20021166), Sep 13, 2002: MOUNT. CRACKED. (AUS) ENGINE MOUNT CRACKED IN SEVERAL AREAS. FURTHER INSPECTION FOUND BOTH LOWER ENGINE MOUNT BRACKETS LOCATED BEHIND THE FIREWALL ALSO CRACKED. LH AND RH TOP F
- [SDR CA020917005](https://openairdocs.org/sdr/CA020917005), Sep 11, 2002: ROD END. BROKEN. (CAN) ON A SCHEDULED MAINTENANCE INSPECTION THE RT AILERON SWIVEL ROD END WAS FOUND STIFF. ON FURTHER INSPECTION THE BEARING RACE WAS FOUND BROKEN AND SOME OF T
- [SDR AUS20020725](https://openairdocs.org/sdr/AUS20020725), Jul 16, 2002: GEAR. STRIPPED. (AUS) RH MAGNETO DISTRIBUTOR GEAR HAD FIFTEEN TEETH STRIPPED.
- [SDR AUS20020726](https://openairdocs.org/sdr/AUS20020726), Jul 8, 2002: EXHAUST VALVE. CRACKED. (AUS) NO3 CYLINDER EXHAUST VALVE HEAD CRACKED AND BURNT.
- [SDR AUS20020475](https://openairdocs.org/sdr/AUS20020475), May 19, 2002: SPARK PLUG. FOULED. (AUS) NR 4 CYLINDER SPARK PLUGS FOULED.
- [SDR AU010182](https://openairdocs.org/sdr/AU010182), Mar 7, 2001: CRANKSHAFT. CORRODED. (AUS) CRANKSHAFT INTERNAL BORE CORRODED. FOUND DURING INSPECTION IAWAD/LYC/102 AMDT2 PART 1 AND PART 2.
- [SDR AU010184](https://openairdocs.org/sdr/AU010184), Mar 7, 2001: PUSHROD. MISINSTALLED. (AUS) ENGINE PUSHRODS AND TAPPETS INCORRECTLY FITTED DURING ASSEMBLY FOLLOWING A BULK STRIP FOLLOWING A PROPELLER STRIKE. METAL CONTAMINATION OF ENGINE.
- [SDR AU001323](https://openairdocs.org/sdr/AU001323), Dec 13, 2000: FITTING. CRACKED. (AUS) RT WING REAR SPAR INBOARD ATTACHMENT BRACKET CRACKED. CRACKSAPPEAR TO INITIATE FROM THE ACCESS PANEL ON THE LOWER WING SKIN PANELS ARE NONSTANDARD ACCESS 
- [SDR AU001324](https://openairdocs.org/sdr/AU001324), Dec 13, 2000: FITTING. CRACKED. (AUS) LT WING REAR SPAR INBOARD ATTACHMENT BRACKET CRACKED. CRACKSAPPEAR TO INITIATE FROM THE ACCESS PANEL ON THE LOWER WING SKIN PANELS ARE NON STANDARD ACCESS
- [SDR CA000427020](https://openairdocs.org/sdr/CA000427020), Apr 17, 2000: WIRE. CORRODED. (CAN) THE AUDIO SYS INVESTIGATED DUE TO REPEATED PROBLEMS RPTED BY PILOTS EVEN FOLLOWING MAINT CARRIED OUT. COMPLETE WIRING CHECKED FROM DASHBOARD TO HEADSET/PH
- [SDR CA991210019](https://openairdocs.org/sdr/CA991210019), Nov 24, 1999: ENGINE. FAILED. (CAN) ENGINE STOPPED AT ALT, ENG WOULD NOT RESTART. NO FAULTS WERE FOUND WITH ENG AT BENCH TEST AFTER INCIDENT.
- [SDR AU990815](https://openairdocs.org/sdr/AU990815), Aug 17, 1999: MAGNETO. FAULTY. (AUS) RIGHT MAGNETO FAULTY.
- [SDR AU990737](https://openairdocs.org/sdr/AU990737), Jul 30, 1999: MAGNETO. FAULTY. (AUS) MAGNETO FAULTY. ENGINE WAS JUST RECEIVED FROM OVERHAUL.
- [SDR CA990223010](https://openairdocs.org/sdr/CA990223010), Feb 9, 1999: TUBE. MISINSTALLED. (CAN) DURING FLIGHT, THE PILOT NOTICED THROTTLE MOVEMENT WAS OBSTRUCTED. THE AIRCRAFT LANDED SAFELY. ON THE GROUND, THE THROTTLE OPERATION WAS NORMAL. ON REMOVA
- [SDR AU990057](https://openairdocs.org/sdr/AU990057), Jan 19, 1999: BOLT. CRACKED. (AUS) WING SPAR BOLTS CRACKED UNDER THE BOLT HEAD. PART TC: 3,547.
- [SDR AU990012](https://openairdocs.org/sdr/AU990012), Jan 13, 1999: SPLICE. CRACKED. (AUS) LEFT WING AFT LOWER SPLICE PLATE CRACKED APPROXIMATELY 2 MM (0.079 INCH) IN LENGTH. ALSO, THE FORWARD RIGHT ANGLE DOUBLER WAS CRACKED IN THE LOWER BEND RA
- [SDR AU990017](https://openairdocs.org/sdr/AU990017), Jan 13, 1999: BOLT. CRACKED. (AUS) WHEN WING SPAR BOLTS WERE MAGNAFLUXED, (NOT A REQUIREMENT OF THIS AD), ALL 12 BOLTS WERE FOUND CRACKED UNDER HEAD. FOUND DURING COMPLIANCE WITH AD/ROBIN/8
- [SDR AU981274](https://openairdocs.org/sdr/AU981274), Sep 25, 1998: SKIN. CRACKED. (AUS) LEFT WING UPPER LEADING EDGE SKIN CRACKED IN AREA OF RIVET LINE ON THE MAIN SPAR. CRACK APPROXIMATELY 52.8 MM (2 INCHES) IN LENGTH LOCATED 209.55 MM (8.25
- [SDR CA980810007](https://openairdocs.org/sdr/CA980810007), Jul 30, 1998: TAPPET. FAILED. (CAN) PILOT REPORTED A ROUGH RUNNING ENGINE. INITIAL INVESTIGATION FOUND THE HYDRAULIC TAPPET BODY AND SYSTEM HAD FAILED ON THE NR 4 CYLINDER INTAKE SIDE. THE E
- [SDR CA980602014](https://openairdocs.org/sdr/CA980602014), May 23, 1998: CRANKSHAFT. PITTED. (CAN) WHILE COMPLYING WITH AD 98-02-08 INSPECTION, PITS WERE FOUND IN THE CRANKSHAFT BORE.
- [SDR 97ZZZX4497](https://openairdocs.org/sdr/97ZZZX4497), Oct 8, 1997: SPARK PLUG. BROKEN. ENGINE RPM DROPPED TO APPROXIMATELY 2,000 RPM ON CLIMB-OUT. GROUND RUN-UP WAS NORMAL BEFORE AND AFTER FLIGHT AND DURING FIRST 200 FEET OF CLIMB OUT. INSPECTION 
- [SDR 97ZZZX1224](https://openairdocs.org/sdr/97ZZZX1224), Mar 18, 1997: CRANKSHAFT. CRACKED. THIS AIRCRAFT IS USED EXCLUSIVELY FOR FLIGHT TRAINING. ON PRE-FLIGHT, STUDENT AND INSTRUCTOR FOUND OIL ON THE COWLING. UPON INSPECTION, TWO CRACKS WERE FOUND ON
- [SDR AU970165](https://openairdocs.org/sdr/AU970165), Feb 20, 1997: TORQUE LINK. BROKEN. (AUS) LH MAIN LANDING GEAR LOWER TORQUE LINK BROKEN AT INBOARD ATTACHMENT LUG - OUTBOARD LUG CONTAINS A HAIR LINE CRACK - RH MLG TORQUE LINK CONTAINS SOME PITTI
- [SDR AU970107](https://openairdocs.org/sdr/AU970107), Feb 18, 1997: TORQUE LINK. BROKEN. (AUS) RH MAIN LANDING GEAR LOWER TORQUE LINK FAILED AT LOWER ATTACHMENT HOLES
- [SDR CA961216013](https://openairdocs.org/sdr/CA961216013), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961216014](https://openairdocs.org/sdr/CA961216014), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961216015](https://openairdocs.org/sdr/CA961216015), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961216016](https://openairdocs.org/sdr/CA961216016), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961216017](https://openairdocs.org/sdr/CA961216017), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961216018](https://openairdocs.org/sdr/CA961216018), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961216019](https://openairdocs.org/sdr/CA961216019), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961216020](https://openairdocs.org/sdr/CA961216020), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961216021](https://openairdocs.org/sdr/CA961216021), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961216022](https://openairdocs.org/sdr/CA961216022), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961216023](https://openairdocs.org/sdr/CA961216023), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961216024](https://openairdocs.org/sdr/CA961216024), Dec 3, 1996: CRANKSHAFT. CORRODED. (CAN) DETAILED INSPECTION OF THE ENGINE CRANKSHAFT CARRIED OUT AS PER LYCOMING SB #505A REVEALED CORROSION AND DEEP PITTING IN THE INSIDE DIAMETER (I.D.). REMOV
- [SDR CA961115002](https://openairdocs.org/sdr/CA961115002), Oct 1, 1996: CRANKSHAFT. CRACKED. (CAN) ENGINE RECEIVED FOR REPAIR FOR A CRANKSHAFT CRACKED AT THE MAIN BEARING JOURNAL EXTENDING FROM THE FRONT EXPANSION PLUG SEAT IN A SPIRAL (ANTI CLOCKWISE F
- [SDR CA960916010](https://openairdocs.org/sdr/CA960916010), Sep 3, 1996: CRANKSHAFT. CRACKED. (CAN) PILOT REPORTED AN OIL LEAK IN THE PROP AREA AND AN OIL SMELL IN THE CABIN. INVESTIGATION REVEALED THAT THE CRANKSHAFT ASSEMBLY HAD A CRACK FROM THE PROP F
- [SDR CA960826065](https://openairdocs.org/sdr/CA960826065), Aug 9, 1996: PUSHROD. BROKEN. (CAN) UPON PULLING THE THROTTLE BACK THE PUSHROD BROKE AT THE FORWARD THREADED END, WHERE IT ATTACHES TO THE CLEVIS ASSEMBLY. THE PILOT HAD ENOUGH TRAVEL TO PER

All 67: https://openairdocs.org/engine/lycoming-o-320-d2a/reports.md

## STCs that may be installed (OpenAirDocs) (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
- [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 SE925GL](https://openairdocs.org/stc/SE925GL): Installation of Shadin Co. fuel flow transducer. Shadin Company 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 SE732NE](https://openairdocs.org/stc/SE732NE): Installation of 'Auto-Vac-4' primary vacuum system. Raymond Ives
- [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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