# Lycoming O-290-D

- Type: Engine model (FAA registry)
- Registry code: 42089
- Manufacturer (registry): LYCOMING
- Model: O-290-D
- Engine type: Reciprocating
- Power: 130 hp
- Data sheet: [TCDS E-229](https://openairdocs.org/tcds/E-229) (OpenAirDocs)
- Holder: Lycoming Division AVCO Corporation
- Installed in: 45 registered aircraft
- Page: https://openairdocs.org/engine/lycoming-o-290-d

Model codes come from the FAA registry's reference file.

## ADs that may apply (OpenAirDocs)

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

- [AD 2026-04-11](https://openairdocs.org/ad/2026-04-11): Engine (Reciprocating) · Lycoming Engines AEIO-320-D1B, AEIO-320-D2B, AEIO-320-E1A and 605 more. Effective Apr 8, 2026
- [AD 2012-03-07](https://openairdocs.org/ad/2012-03-07): Carburetor · Lycoming Engines GO-435, GO-435-C2 (O-435-17), GO-435-C2A and 389 more. Effective Mar 27, 2012
- [AD 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 98-01-06](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 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 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 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 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

Historical (superseded or no longer in force):

- [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

## Registered aircraft (45)

- [N105JE](https://openairdocs.org/aircraft/N105JE): [Schier Del J](https://openairdocs.org/faa-owner/SCHIER%20DEL%20J), [Lake City, FL](https://openairdocs.org/faa-place/FL/Lake%20City), built 2015, S/N 3050
- [N128FF](https://openairdocs.org/aircraft/N128FF): [Thomas Blake W](https://openairdocs.org/faa-owner/THOMAS%20BLAKE%20W), [The Villages, FL](https://openairdocs.org/faa-place/FL/The%20Villages), built 2008, S/N 6128
- [N129JB](https://openairdocs.org/aircraft/N129JB): [Kuykendall Robert J](https://openairdocs.org/faa-owner/KUYKENDALL%20ROBERT%20J), [Jefferson, WI](https://openairdocs.org/faa-place/WI/Jefferson), built 2009, S/N 6-4584
- [N1364A](https://openairdocs.org/aircraft/N1364A): [Franz Stanley](https://openairdocs.org/faa-owner/FRANZ%20STANLEY), [Yakima, WA](https://openairdocs.org/faa-place/WA/Yakima), built 1951, S/N 18-1190
- [N1553M](https://openairdocs.org/aircraft/N1553M): [Rubbert Jan D](https://openairdocs.org/faa-owner/RUBBERT%20JAN%20D), [Upham, ND](https://openairdocs.org/faa-place/ND/Upham), built 1947, S/N 12-3125
- [N1573Z](https://openairdocs.org/aircraft/N1573Z): [Smith David J](https://openairdocs.org/faa-owner/SMITH%20DAVID%20J), [Duluth, MN](https://openairdocs.org/faa-place/MN/Duluth), built 2014, S/N 001
- [N202PT](https://openairdocs.org/aircraft/N202PT): [Herreman Brian J](https://openairdocs.org/faa-owner/HERREMAN%20BRIAN%20J), [Aguila, AZ](https://openairdocs.org/faa-place/AZ/Aguila), built 2017, S/N 0016
- [N234BR](https://openairdocs.org/aircraft/N234BR): [Holmes Tracy H](https://openairdocs.org/faa-owner/HOLMES%20TRACY%20H), [Boerne, TX](https://openairdocs.org/faa-place/TX/Boerne), built 2015, S/N 001
- [N25801](https://openairdocs.org/aircraft/N25801): [Vessel Of Honour Ministries](https://openairdocs.org/faa-owner/VESSEL%20OF%20HONOUR%20MINISTRIES), [Bluff City, TN](https://openairdocs.org/faa-place/TN/Bluff%20City), built 2010, S/N 278
- [N299ST](https://openairdocs.org/aircraft/N299ST): [Thibodaux Scott A](https://openairdocs.org/faa-owner/THIBODAUX%20SCOTT%20A), [Thibodaux, LA](https://openairdocs.org/faa-place/LA/Thibodaux), built 2009, S/N ST003
- [N328LP](https://openairdocs.org/aircraft/N328LP): [Nice Volmer LLC](https://openairdocs.org/faa-owner/NICE%20VOLMER%20LLC), [Toledo, OH](https://openairdocs.org/faa-place/OH/Toledo), built 1969, S/N WJBC-1-1-67
- [N33082](https://openairdocs.org/aircraft/N33082): [Lewis Milton K](https://openairdocs.org/faa-owner/LEWIS%20MILTON%20K), [Cortez, CO](https://openairdocs.org/faa-place/CO/Cortez), built 1940, S/N 5-431
- [N3538M](https://openairdocs.org/aircraft/N3538M): [Bruesch John E](https://openairdocs.org/faa-owner/BRUESCH%20JOHN%20E), [Long Grove, IA](https://openairdocs.org/faa-place/IA/Long%20Grove), built 2025, S/N SA-SW2121108
- [N397PA](https://openairdocs.org/aircraft/N397PA): [Stelzle Scott A](https://openairdocs.org/faa-owner/STELZLE%20SCOTT%20A), [Templeton, CA](https://openairdocs.org/faa-place/CA/Templeton), built 1940, S/N 5-397
- [N410JK](https://openairdocs.org/aircraft/N410JK): [White Clay](https://openairdocs.org/faa-owner/WHITE%20CLAY), [Broken Bow, OK](https://openairdocs.org/faa-place/OK/Broken%20Bow), built 2020, S/N 8283
- [N42TZ](https://openairdocs.org/aircraft/N42TZ): [Booe Matt](https://openairdocs.org/faa-owner/BOOE%20MATT), [Centerpoint, IN](https://openairdocs.org/faa-place/IN/Centerpoint), S/N 44
- [N43834](https://openairdocs.org/aircraft/N43834): [Mclellan Robert L Jr](https://openairdocs.org/faa-owner/MCLELLAN%20ROBERT%20L%20JR), [Russellville, KY](https://openairdocs.org/faa-place/KY/Russellville), built 2006, S/N 16
- [N4600](https://openairdocs.org/aircraft/N4600): [Stevens Mike R](https://openairdocs.org/faa-owner/STEVENS%20MIKE%20R), [Duluth, MN](https://openairdocs.org/faa-place/MN/Duluth), built 1971, S/N 46
- [N4825M](https://openairdocs.org/aircraft/N4825M): [Cottle John G](https://openairdocs.org/faa-owner/COTTLE%20JOHN%20G), [Enid, OK](https://openairdocs.org/faa-place/OK/Enid), built 1995, S/N 215
- [N49GD](https://openairdocs.org/aircraft/N49GD): [Michel Kris](https://openairdocs.org/faa-owner/MICHEL%20KRIS), [Shelter Cove, CA](https://openairdocs.org/faa-place/CA/Shelter%20Cove), built 1983, S/N RS-10
- [N505TF](https://openairdocs.org/aircraft/N505TF): [Hawkins Larry L](https://openairdocs.org/faa-owner/HAWKINS%20LARRY%20L), [Farmington, NM](https://openairdocs.org/faa-place/NM/Farmington), built 2021, S/N 11456
- [N5094B](https://openairdocs.org/aircraft/N5094B): [Smith Glenn](https://openairdocs.org/faa-owner/SMITH%20GLENN), [Orange Park, FL](https://openairdocs.org/faa-place/FL/Orange%20Park), built 2007, S/N 001
- [N5929Z](https://openairdocs.org/aircraft/N5929Z): [Brown Dave M](https://openairdocs.org/faa-owner/BROWN%20DAVE%20M), [Crescent City, CA](https://openairdocs.org/faa-place/CA/Crescent%20City), built 2013, S/N 75-8517
- [N5976B](https://openairdocs.org/aircraft/N5976B): [Varney Walter E](https://openairdocs.org/faa-owner/VARNEY%20WALTER%20E), [Charlotte, NC](https://openairdocs.org/faa-place/NC/Charlotte), built 2018, S/N 25515
- [N622PP](https://openairdocs.org/aircraft/N622PP): [Hyde Russell M](https://openairdocs.org/faa-owner/HYDE%20RUSSELL%20M), [Rutherfordton, NC](https://openairdocs.org/faa-place/NC/Rutherfordton), built 1947, S/N 12-2642
- [N6339](https://openairdocs.org/aircraft/N6339): [Leonard  Nick  A](https://openairdocs.org/faa-owner/LEONARD%20%20NICK%20%20A), [Pipe Creek, TX](https://openairdocs.org/faa-place/TX/Pipe%20Creek), built 2009, S/N G-2
- [N64VS](https://openairdocs.org/aircraft/N64VS): [Signorile Raffaele](https://openairdocs.org/faa-owner/SIGNORILE%20RAFFAELE), [Garfield, NJ](https://openairdocs.org/faa-place/NJ/Garfield), built 2013, S/N 65-8851
- [N66PK](https://openairdocs.org/aircraft/N66PK): [Morton Dennis D](https://openairdocs.org/faa-owner/MORTON%20DENNIS%20D), [La Harpe, IL](https://openairdocs.org/faa-place/IL/La%20Harpe), built 2021, S/N 1103
- [N681KE](https://openairdocs.org/aircraft/N681KE): [Eckstein Kenneth A](https://openairdocs.org/faa-owner/ECKSTEIN%20KENNETH%20A), [Simpsonville, SC](https://openairdocs.org/faa-place/SC/Simpsonville), built 2023, S/N 112012
- [N687LP](https://openairdocs.org/aircraft/N687LP): [Forgotten Heroes Foundation](https://openairdocs.org/faa-owner/FORGOTTEN%20HEROES%20FOUNDATION), [Chesapeake, VA](https://openairdocs.org/faa-place/VA/Chesapeake), S/N 012
- [N6881K](https://openairdocs.org/aircraft/N6881K): [Time 2 Fly LLC](https://openairdocs.org/faa-owner/TIME%202%20FLY%20LLC), [Baldwinsville, NY](https://openairdocs.org/faa-place/NY/Baldwinsville), built 1979, S/N 16-724
- [N72454](https://openairdocs.org/aircraft/N72454): [Dawson Adam J](https://openairdocs.org/faa-owner/DAWSON%20ADAM%20J), [Eveleth, MN](https://openairdocs.org/faa-place/MN/Eveleth), built 1952, S/N 18-1715
- [N7725K](https://openairdocs.org/aircraft/N7725K): [Kansas State University Salina](https://openairdocs.org/faa-owner/KANSAS%20STATE%20UNIVERSITY%20SALINA), [Salina, KS](https://openairdocs.org/faa-place/KS/Salina), built 1950, S/N 20-547
- [N772LM](https://openairdocs.org/aircraft/N772LM): [Kpk Holdings LLC](https://openairdocs.org/faa-owner/KPK%20HOLDINGS%20LLC), [East Helena, MT](https://openairdocs.org/faa-place/MT/East%20Helena), built 1940, S/N 5-239
- [N7754K](https://openairdocs.org/aircraft/N7754K): [Koch Paul D](https://openairdocs.org/faa-owner/KOCH%20PAUL%20D), [Morgan Hill, CA](https://openairdocs.org/faa-place/CA/Morgan%20Hill), built 1951, S/N 20582
- [N7781K](https://openairdocs.org/aircraft/N7781K): [Evans Thomas Sidney](https://openairdocs.org/faa-owner/EVANS%20THOMAS%20SIDNEY), [Wilmer, AL](https://openairdocs.org/faa-place/AL/Wilmer), built 1951, S/N 20-607
- [N819YK](https://openairdocs.org/aircraft/N819YK): [Boswell Jeffrey](https://openairdocs.org/faa-owner/BOSWELL%20JEFFREY), [Kingsland, GA](https://openairdocs.org/faa-place/GA/Kingsland), built 2017, S/N 007
- [N81LE](https://openairdocs.org/aircraft/N81LE): [Rieger Mark W](https://openairdocs.org/faa-owner/RIEGER%20MARK%20W), [Woodland, CA](https://openairdocs.org/faa-place/CA/Woodland), S/N 701
- [N849J](https://openairdocs.org/aircraft/N849J): [Beam Jeffrey W](https://openairdocs.org/faa-owner/BEAM%20JEFFREY%20W), [Arkansas City, KS](https://openairdocs.org/faa-place/KS/Arkansas%20City), built 2008, S/N 247
- [N853SP](https://openairdocs.org/aircraft/N853SP): [Pavilon Clemens J](https://openairdocs.org/faa-owner/PAVILON%20CLEMENS%20J), [Bolingbrook, IL](https://openairdocs.org/faa-place/IL/Bolingbrook), S/N 002
- [N8728C](https://openairdocs.org/aircraft/N8728C): [Bateman Jon L](https://openairdocs.org/faa-owner/BATEMAN%20JON%20L), [Colville, WA](https://openairdocs.org/faa-place/WA/Colville), built 2014, S/N 6795
- [N872SC](https://openairdocs.org/aircraft/N872SC): [Lang Christopher G](https://openairdocs.org/faa-owner/LANG%20CHRISTOPHER%20G), [New Hampton, NH](https://openairdocs.org/faa-place/NH/New%20Hampton), built 2019, S/N 001
- [N873YD](https://openairdocs.org/aircraft/N873YD): [Nelson Gerald R](https://openairdocs.org/faa-owner/NELSON%20GERALD%20R), [Texarkana, AR](https://openairdocs.org/faa-place/AR/Texarkana), built 2021, S/N 1931
- [N942SB](https://openairdocs.org/aircraft/N942SB): [Garvey John D](https://openairdocs.org/faa-owner/GARVEY%20JOHN%20D), [Timbercreek, TX](https://openairdocs.org/faa-place/TX/Timbercreek), built 2007, S/N 90835
- [N998Z](https://openairdocs.org/aircraft/N998Z): [Weimer Andy A](https://openairdocs.org/faa-owner/WEIMER%20ANDY%20A), [Pierce, ID](https://openairdocs.org/faa-place/ID/Pierce), built 2009, S/N 519-50

## NTSB investigations (9)

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 CEN25LA190](https://openairdocs.org/ntsb/CEN25LA190), May 29, 2025: Nelson Special (N873YD), Hope, AR, substantial damage. Probable cause: The pilot’s failure to maintain airplane control during the landing roll.
- [NTSB ERA20LA050](https://openairdocs.org/ntsb/ERA20LA050), Dec 8, 2019: Zenith Zodiac CH-650 (N914AR), Willow Springs, MO, substantial damage. Probable cause: Improper maintenance practices on the fuel system causing fuel starvation and a total loss of engine power.
- [NTSB CEN16LA271](https://openairdocs.org/ntsb/CEN16LA271), Jul 18, 2016: Gerald Nelson Nelson Woody (N525AG), Hope, AR, substantial damage. Probable cause: The loss of control upon landing for reasons that could not be determined.
- [NTSB CEN13CA268](https://openairdocs.org/ntsb/CEN13CA268), May 2, 2013: Hook Zodiac CH-650 (N914AR), Gainesville, MO, substantial damage. Probable cause: The pilot misjudged the landing approach, which resulted in the airplane hitting a tree.
- [NTSB ANC77FAD10](https://openairdocs.org/ntsb/ANC77FAD10), Jul 2, 1977: Volmer UJ-22 (N4600), Hump Island, AK, substantial damage
- [NTSB MKC76FER74](https://openairdocs.org/ntsb/MKC76FER74), Jul 1, 1976: Volmer VJ-22 (N4600), Fairmont, MN, substantial damage
- [NTSB SEA69F0064](https://openairdocs.org/ntsb/SEA69F0064), Jun 8, 1968: Piper PA-20 (N7725K), Redmond, OR, substantial damage
- [NTSB LAX68D0084](https://openairdocs.org/ntsb/LAX68D0084), Aug 9, 1967: Piper PA-20 (N7754K), Upland, CA, substantial damage
- [NTSB UNK65X0181](https://openairdocs.org/ntsb/UNK65X0181), Oct 7, 1964: Piper PA20 (N7754K), Yakima, WA, substantial damage

## FAA accident and incident reports (5)

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 20250529007679A](https://openairdocs.org/incident/20250529007679A), May 29, 2025: Gerald Nelson NELSON SPECIAL (N873YD), Hope, AR, Substantial damage. The pilot completed a three-point landing at the intersection of ryws 4/22 and 16/34 while landing on rwy 16. Just after landing and at the beginning of the…
- [Incident 20200216000329I](https://openairdocs.org/incident/20200216000329I), Feb 16, 2020: Raffaele Signorile CH650B (N64VS), Allentown, PA, No damage. While taxing via taxiway "a" pilot reported a snapped rudder cable. Upon investigation we found the pilot"s left rudder pedal mount broke off the torque tube.
- [Accident 20191208017069A](https://openairdocs.org/incident/20191208017069A), Dec 8, 2019: Hook Ronald G ZODIAC CH-650 (N914AR), Willow Springs, MO, Substantial damage. The pilot completed an oil change after completing 3.5 hours of engine run for the replacement of the engine cylinders. The ground adjustable propeller was set…
- [Accident 20160718012429A](https://openairdocs.org/incident/20160718012429A), Jul 18, 2016: Gerald Nelson NELSON WOODY (N525AG), Hope, AR, Substantial damage. On July 18, 2016, at approximately 09:30 CDT, N525AG a Gerald Nelson Woody homebuilt experimental aircraft, operated by a private pilot, was performing 'touch…
- [Accident 20130502007649A](https://openairdocs.org/incident/20130502007649A), May 2, 2013: Hook Ronald G ZODIAC CH-650 (N914AR), Gainesville, MO, Substantial damage. The aircraft was approaching to land at the owner's private runway in a wooded area, when it struck a tree to the left side of the landing strip and came to…

## Service difficulty reports (3)

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

- [SDR 2013FA0000620](https://openairdocs.org/sdr/2013FA0000620), Oct 4, 2013: BOLT. BROKEN. SUDDEN STOPPAGE OF ENGINE. AFTER SUCCESSFUL OFF AIRPORT LANDING, ENGINE WAS INSPECTED AND FOUND CYLINDER NR 2 CONNECTING ROD BOLTS BROKEN/MISSING. BOLTS WERE IN
- [SDR CA990614030](https://openairdocs.org/sdr/CA990614030), Mar 26, 1999: LIFT STRUT. CORRODED. (CAN) DURING ROUTINE ANNUAL INSPECTION TO ACCOMPLISH AWD 99-01-05, FRONT STRUT WAS FOUND CORRODED THROUGH NEW N2 FILLED STRUTS AND FORK ENDS ORDERED FROM UNIVAI
- [SDR 96ZZZX5023](https://openairdocs.org/sdr/96ZZZX5023), Aug 20, 1996: PISTON. FAILED. DURING FLIGHT, THE PILOT REPORTED HEARING A SLIGHT KNOCKING IN THE ENGINE AND NOTED A 20 PSI DROP IN OIL PRESSURE. A PRECAUTIONARY LANDING WAS MADE WITHOUT INCI

## STCs that may be installed (OpenAirDocs) (25)

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-290 Series
- [STC SE01954SE](https://openairdocs.org/stc/SE01954SE): Installation of engine crankcase seal. Ly-Con Rebuilding Company
- [STC SE00939WI](https://openairdocs.org/stc/SE00939WI): Installation of B&C Specialty Products Model BC 315-( ) Starter on Lycoming engines. B & C Specialty Products Inc
- [STC SE2392CE](https://openairdocs.org/stc/SE2392CE): 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). 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
- [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 SE00218NY](https://openairdocs.org/stc/SE00218NY): Replacement of Lycoming starter with SKY-TEC 12 volt starter installed. Hartzell Engine Technologies, LLC. Lists O-290 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-290 Series
- [STC SE01930NY](https://openairdocs.org/stc/SE01930NY): Installation of Casper Labs 90 degree oil filter housing adapter. Casper Labs Inc
- [STC SE01943CH](https://openairdocs.org/stc/SE01943CH): Add the following approved fuels: unleaded automotive gasoline 87 minimum antiknock index, per ASTM Specification D-439 or D-4814 of any volatility class, A through E, or 82UL AVGAS per ASTM D-6227. Experimental Aircraft Association 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-290 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
- [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-290 Series
- [STC SA2392CE](https://openairdocs.org/stc/SA2392CE): Installation of B & C Specialty Products. Bainbridge William C III
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists O-290 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-290 Series
- [STC SE2036CE](https://openairdocs.org/stc/SE2036CE): Add the following approved fuel: unleaded automotive gasoline, 87 minimum antiknock index, and leaded automotive gasoline, 88 minimum antiknock index(RON+MON)/2. Intermixing with aviation gasoline also approved. Petersen Aviation Inc
- [STC SE128NE](https://openairdocs.org/stc/SE128NE): Use of AMS/OIL 15W 50 synthetic piston aircraft oil in Avco engines. AMS/OIL. Lists O-290 Series

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