# Continental IO-470-U

- Type: Engine model (FAA registry)
- Registry code: 17352
- Manufacturer (registry): CONT MOTOR
- Model: IO-470-U
- Engine type: Reciprocating
- Power: 260 hp
- Data sheet: [TCDS 3E1](https://openairdocs.org/tcds/3E1) (OpenAirDocs)
- Holder: Continental Aerospace Technologies, Inc.
- Installed in: 2 registered aircraft
- Page: https://openairdocs.org/engine/continental-io-470-u

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 2023-17-04](https://openairdocs.org/ad/2023-17-04): Reciprocating Engine Oil System · F & M Enterprises' Model C6LC, C6LC-S or C6LC-L oil filter… (Stratus Tool Technologies STC SE09356SC or 2 others). Effective Oct 26, 2023
- [AD 2023-05-16](https://openairdocs.org/ad/2023-05-16): Reciprocating Engine Power Section · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 147 more. Effective Mar 15, 2023
- [AD 2023-02-12](https://openairdocs.org/ad/2023-02-12): Engine Air Intake System · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 127 more. Effective Feb 17, 2023
- [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 2012-03-06](https://openairdocs.org/ad/2012-03-06): Fuel servo diaphragm · Continental Motors 6-260-A, 6-285-A, 6-285-B and 482 more. Effective Feb 24, 2012
- [AD 2010-11-04](https://openairdocs.org/ad/2010-11-04): Hydraulic lifters · Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 190 more. Effective Jun 16, 2010
- [AD 2009-19-07](https://openairdocs.org/ad/2009-19-07): EQ3 cylinders · Continental Motors IO-470-C, IO-470-D, IO-470-E and 72 more. Effective Oct 7, 2009
- [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 2000-23-21](https://openairdocs.org/ad/2000-23-21): Crankshaft · Continental Motors IO-360-A, IO-360-AB, IO-360-B and 164 more. Effective Dec 12, 2000
- [AD 99-19-01](https://openairdocs.org/ad/99-19-01): No. 2 and No. 5 Crankshaft Inspections · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 127 more. Effective Sep 30, 1999
- [AD 97-21-02](https://openairdocs.org/ad/97-21-02): Cylinders · Continental Motors E165-2, E165-3, E165-4 and 61 more. Effective Oct 27, 1997
- [AD 96-12-22](https://openairdocs.org/ad/96-12-22): Full Flow Engine Oil Adapter · Bellanca CH-300 Pacemaker, 120, 140 and 361 more. Effective Jul 31, 1996
- [AD 93-08-17](https://openairdocs.org/ad/93-08-17): Oil Pick-Up Tube · Continental Motors IO-470-A, IO-470-C, IO-470-D and 104 more. Effective Aug 23, 1993
- [AD 93-10-02](https://openairdocs.org/ad/93-10-02): Missing Cylinder Valve Retainer Key · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 180 more. Effective Aug 12, 1993
- [AD 91-19-03](https://openairdocs.org/ad/91-19-03): Oil Filter · Continental Motors 6-285-A, 6-285-B, 6-285-BA and 169 more. Effective Sep 29, 1991
- [AD 88-03-06](https://openairdocs.org/ad/88-03-06): Oil Filter · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 155 more. Effective Apr 15, 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 80-06-05](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 79-05-09](https://openairdocs.org/ad/79-05-09): Oil Pump Assembly Or Oil Pressure Relief Valve Screw And/Or Plunger · Teledyne Continental Motors 6-285-CA, GTSIO-520-C, GTSIO-520-D and 60 more. Effective Mar 12, 1979
- [AD 70-14-07](https://openairdocs.org/ad/70-14-07): Fuel Injection Pump · Continental Motors IO-360-A, IO-360-C, IO-360-D and 25 more. Effective Nov 22, 1974
- [AD 72-20-02](https://openairdocs.org/ad/72-20-02): Cylinders · Continental Motors IO-470-D, IO-470-E, IO-470-F and 10 more. Effective Oct 2, 1974
- [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 98-01-08](https://openairdocs.org/ad/98-01-08): Exhaust Roller Rocker Arm · Roller rocker arm P/N PE 92I intake and PE92E exhaust (Performance Engineering STC SE8594SW)

Historical (superseded or no longer in force):

- [AD 2023-04-08](https://openairdocs.org/ad/2023-04-08) (historical): Reciprocating Engine Power Section · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 141 more. Effective Feb 23, 2023
- [AD 2009-24-52](https://openairdocs.org/ad/2009-24-52) (historical): Hydraulic lifters · Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 192 more
- [AD 2009-24-51](https://openairdocs.org/ad/2009-24-51) (historical): Hydraulic lifters · Teledyne Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 156 more
- [AD 2000-08-51](https://openairdocs.org/ad/2000-08-51) (historical): Crankshaft · Teledyne Continental Motors IO-360-A, IO-360-AB, IO-360-B and 158 more
- [AD 99-09-17](https://openairdocs.org/ad/99-09-17) (historical): Crankshaft · Teledyne Continental Motors IO-470-A, IO-470-C, IO-470-D and 114 more
- [AD 97-15-01](https://openairdocs.org/ad/97-15-01) (historical): Pistons · Teledyne Continental Motors E165-2, E165-3, E165-4 and 61 more

## Information bulletins (advisory) (6)

- [SAIB NE-20-05](https://openairdocs.org/saib/NE-20-05): POWERPLANT - Engine Camshaft Gear Tooth Fracture. Issued Apr 6, 2020
- [SAIB NE-16-13](https://openairdocs.org/saib/NE-16-13): Powerplant - Prohibited use of sealant. Issued Mar 8, 2016
- [SAIB NE-13-15](https://openairdocs.org/saib/NE-13-15): Engine Controls: Continental Motors, Inc. (CMI) Throttle and Mixture Control Levers. Issued Feb 8, 2013
- [SAIB NE-13-04](https://openairdocs.org/saib/NE-13-04): Continental Motors, Inc. (CMI) Connecting Rod Piston Pin Bushing Inspection. Issued Oct 31, 2012
- [SAIB NE-10-09](https://openairdocs.org/saib/NE-10-09): Reciprocating Engine Power Section: Hydraulic Valve Lifters. Issued Nov 20, 2009
- [SAIB NE-09-08](https://openairdocs.org/saib/NE-09-08): Reciprocating Engine Cylinder Section. Issued Jan 30, 2009

## Registered aircraft (2)

- [N302SK](https://openairdocs.org/aircraft/N302SK): [Haynes Daniel R](https://openairdocs.org/faa-owner/HAYNES%20DANIEL%20R), [New Braunfels, TX](https://openairdocs.org/faa-place/TX/New%20Braunfels), built 1965, S/N 310J-0036
- [N3079L](https://openairdocs.org/aircraft/N3079L): [Tff Inc](https://openairdocs.org/faa-owner/TFF%20INC), [Parma, MI](https://openairdocs.org/faa-place/MI/Parma), built 1965, S/N 310J0079

## NTSB investigations

None matched to aircraft with this engine model.

## FAA accident and incident reports

None matched to aircraft with this engine model.

## Service difficulty reports (27)

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

- [SDR 2005FA0001244](https://openairdocs.org/sdr/2005FA0001244), May 16, 2005: ATTACH FITTING. CORRODED. DURING THE ANNUAL INSPECTION, THE WING FITTING WAS FOUND TO BE CORRODED SO SEVERE THAT IT WAS ALMOST .2500 OF THE WAY THRU THE FITTING. PICTURES ENCLOSED THAT S
- [SDR 310EE](https://openairdocs.org/sdr/310EE), Aug 8, 2003: SUPPORT BRACKET. BROKEN. RH LANDING GEAR COLLAPSED ON LANDING. FOUND THAT THE UPPER BELLCRANK BRACKETT P/N 0811303-1 WHICH SUPPORTS AND GUIDES THE RT MAIN LANDING GEAR PUSH/PULL TUBES F
- [SDR AUS20020003](https://openairdocs.org/sdr/AUS20020003), Jan 2, 2002: DOOR. MISINSTALLED. (AUS) EMERGENCY EXIT INCORRECTLY INSTALLED. ONLY TWO OF THREE LATCHING PINS ENGAGED. EMERGENCY RELEASE CABLE LOOPED AND THE TWO LATCHING PINS WERE FITTED BACKWA
- [SDR 20010412CW009](https://openairdocs.org/sdr/20010412CW009), Mar 1, 2001: CYLINDER. LEAKING. AIRCRAFT LANDED. OIL LEAKING FROM LEFT ENGINE. INSPECTION REVEALED NR 4 CYLINDER VALVE COVER BROKEN DUE TO VALVE ROCKER ASSEMBLY BROKEN FROM CYLINDER BOSS. PROB
- [SDR CA001005010](https://openairdocs.org/sdr/CA001005010), Apr 9, 2000: DOWNLOCK. MISALIGNED. (CAN) - RIGHT GEAR COLLAPSED AFTER LANDING. DOWNLOCK FOUND MISADJUSTED (TOO SHORT). DOWNLOCK BELLCRANK, SIDE BRACE LINK REPLACED. DOWNLOCK READJUSTED. (X)
- [SDR CA990318038](https://openairdocs.org/sdr/CA990318038), Feb 23, 1999: WINDOW. SEPARATED. (CAN) AFTER T/F EMERGENCY WINDOW DEPARTED AIRCRAFT. UPON FURTHER INVESTIGATION, THE WINDOW SEPARATED FROM THE FRONT AND PROCEEDED TO PEEL BACKWARDS. THE EMERGEN
- [SDR AU990139](https://openairdocs.org/sdr/AU990139), Feb 3, 1999: BACKPLATE. CRACKED. (AUS) RT PROPELLER SPINNER BACKING PLATE FAILED. BACKING PLATE HAD CRACKED AROUND THE CIRCUMFERENCE BEND FOR APPROXIMATELY 100 DEGREES.
- [SDR AU981033](https://openairdocs.org/sdr/AU981033), Jul 23, 1998: HUB. CRACKED. (AUS) PROPELLER HUB CRACKED THROUGH THE THREADS IN NR 2 BLADE SOCKET. CRACK LENGTH APPROXIMATELY 50.8MM (2 INCHES). CRACK DOES NOT FOLLOW THE THREADS AROUND THE
- [SDR AU980422](https://openairdocs.org/sdr/AU980422), Apr 9, 1998: BULKHEAD. CRACKED. (AUS) FORWARD FUSELAGE BULKHEAD AND BRACKET AT LOCATED AT STN 27.25 CRACKED. BULKHEAD SUPPORTS THE PULLEYS FOR THE NOSE WHEEL STEERING CABLE. PART TC: 6,445.
- [SDR AU971345](https://openairdocs.org/sdr/AU971345), Oct 16, 1997: CONTROL. JAMMED. (AUS) AILERON CONTROL SYSTEM JAMMED. EVIDENCE OF FOD LODGED BETWEEN CHAIN AND SPROCKET.
- [SDR AU970682](https://openairdocs.org/sdr/AU970682), Jun 19, 1997: ELECTRICAL SYS. FAULTY. (AUS) AIRCRAFT EXPERIENCED ELECTRICAL PROBLEMS. FIBREGLASS PROTECTIVE SHIELD OVER LH AND RH FIELD FUSES ON THE LH FIREWALL HAD CHAFED THROUGH THE LH ALTERNATOR 
- [SDR AU970688](https://openairdocs.org/sdr/AU970688), Jun 19, 1997: CYLINDER. DAMAGED. (AUS) NO2 AND NO6 CYLINDERS DAMAGED BY INGESTION OF SEPARATED ALTERNATE AIR DOOR BRACKET. PERSONNEL/MAINTENANCE ERROR.
- [SDR AU970689](https://openairdocs.org/sdr/AU970689), Jun 19, 1997: BRACKET. SEPARATED. (AUS) ENGINE ALTERNATE AIR DOOR BRACKET SEPARATED AND INGESTED INTO ENGINE
- [SDR AU970690](https://openairdocs.org/sdr/AU970690), Jun 19, 1997: NUT. LOOSE. (AUS) ENGINE MIXTURE CONTROL CABLE OUTER SHEATH NUT NOT ATTACHED
- [SDR AU970691](https://openairdocs.org/sdr/AU970691), Jun 19, 1997: ALTERNATOR. INOPERATIVE. (AUS) ALTERNATOR EMERGENCY FIELD SYSTEM INOPERATIVE. SEE MDR 97/0682FOR ADDITIONAL INFORMATION.
- [SDR AU970692](https://openairdocs.org/sdr/AU970692), Jun 19, 1997: DIODE. INOPERATIVE. (AUS) BATTERY MASTER SYSTEM DIODE INOPERATIVE.
- [SDR AU970693](https://openairdocs.org/sdr/AU970693), Jun 19, 1997: MOUNT. WORN. (AUS) RH ENGINE RH REAR ENGINE MOUNT LANDS WORN EXCESSIVELY. SEE MDR97/0685 FOR DEFECT ON RH ENGINE LH REAR MOUNT FAILURE
- [SDR AU970428](https://openairdocs.org/sdr/AU970428), Apr 26, 1997: STRIKER. CRACKED. (AUS) RH MAIN LANDING GEAR MICROSWITCH STRIKER ARM CRACKED AND SEPARATED FROM SWITCH
- [SDR AU970505](https://openairdocs.org/sdr/AU970505), Apr 20, 1997: HEADSET. DAMAGED. (AUS) HEADSET LEAD MELTED DUE TO SHORT CIRCUIT BETWEEN CO-PILOTS PHONEJACK AND INSTRUMENT LIGHTING WIRE
- [SDR AU970679](https://openairdocs.org/sdr/AU970679), Mar 11, 1997: PLATE. DAMAGED. (AUS) NOSE LANDING GEAR FACE PLATE DAMAGED
- [SDR AU970685](https://openairdocs.org/sdr/AU970685), Mar 11, 1997: MOUNT. BROKEN. (AUS) RH ENGINE REAR ENGINE MOUNT RUBBER BROKEN.
- [SDR AU970686](https://openairdocs.org/sdr/AU970686), Mar 11, 1997: DOOR. LOOSE. (AUS) ENGINE ALTERNATE AIR DOOR BRACKET LOOSE AND INCORRECTLY RIGGED
- [SDR AU970687](https://openairdocs.org/sdr/AU970687), Mar 11, 1997: EXIT DOOR. SEALED. (AUS) EMERGENCY EXIT DOOR SEALED CLOSED. SEALANT HAD TO BE CUT TO ALLOW THE EXIT TO BE REMOVED. AD/GEN/37 LAST CARRIED OUT ON THE 15TH OCTOBER 1996. PERSONNEL/M
- [SDR AU961083](https://openairdocs.org/sdr/AU961083), Jul 31, 1996: SPINNER BLKHD. CRACKED. (AUS) PROPELLER SPINNER BULKHEAD CRACKED FROM ATTACHMENT SCREW HOLES - SUSPECT CRACKS HAD EXISTED FOR SOME TIME - INVESTIGATION FOUND THAT THE DOUBLER ASSEMBLY 
- [SDR AU961082](https://openairdocs.org/sdr/AU961082), Jul 26, 1996: SWITCH. DIRTY. (AUS) RH MAIN LANDING GEAR DOWNLOCK MICROSWITCH DIRTY
- [SDR AU961081](https://openairdocs.org/sdr/AU961081), Jul 18, 1996: TORQUE TUBE. FAILED. (AUS) LH MAIN LANDING GEAR RETRACTION SYSTEM TORQUE TUBE SPLIT - INBOARD LANDING GEAR DOOR ACTUATING ROD ROD-END PNO 5045025-1MISSING FROM MLG RETRACTION LINKAG
- [SDR AU960737](https://openairdocs.org/sdr/AU960737), May 24, 1996: O-RING. WRONG PART. (AUS) PROPELLER CONTAINED THE FOLLOWING FAULTS:- 1. INCORRECT RETENTION NUT 'O' RINGS FITTED2. RETENTION NUT NOT TORQUED 3. NO MOLY KOTE LUBRICANT ON FERRULE TH

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

Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has.

- [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd
- [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc
- [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc
- [STC SE96SO](https://openairdocs.org/stc/SE96SO): Installation of two (2) Roto-Master Turbochargers Model 3DT5FF10J2, P/N 600572-00 (formerly Rajay Model 315F10, P/N RJ0080-102). TALCO Aviation
- [STC SE04577CH](https://openairdocs.org/stc/SE04577CH): Install an electronic engine ignition system. Electroair Acquisition Corp
- [STC SE09356SC](https://openairdocs.org/stc/SE09356SC): Install F & M Enterprises' Model C6LC, C6LC-S or C6LC-L oil filter adapter for a spin-on oil filter. Stratus Tool Technologies LLC
- [STC SE09217SC](https://openairdocs.org/stc/SE09217SC): Installation of modified fuel injector nozzles. General Aviation Modifications Inc
- [STC SE00114SE](https://openairdocs.org/stc/SE00114SE): Replaces Teledyne-Continental Part Number 646277 lifter bodies. B & B Aviation LLC
- [STC SE09637SC](https://openairdocs.org/stc/SE09637SC): Remove existing rocker arm assemblies and install modify rocker arm assemblies. General Aviation Modifications Inc
- [STC SE02261CH](https://openairdocs.org/stc/SE02261CH): Increase engine displacement from 470 cubic inches to 520 cubic inches in the Teledyne Continental Motors IO-470-D, -E, -F, -H, -L, -M, -N, -R, -S, -U, -V, -VO engines models with a flat rating of 260 HP. Cygnet Aerospace Corp
- [STC SE92WE](https://openairdocs.org/stc/SE92WE): Installation of oil fitting (AN-823-5D) in rocker box cover. Airwolf Filter Corporation
- [STC SE2-984](https://openairdocs.org/stc/SE2-984): Modification of Continental Piston Part No. 627738 (IO-470). Continental Motors, Inc. Lists IO-470 Series
- [STC SE26WE](https://openairdocs.org/stc/SE26WE): Piston ring 250000, 250000+2W and250000+10W on Continental E Series piston 534895, O-470 piston 534895, 626992 and 537883 and IO-470 piston534895. Continental Motors, Inc. Lists IO-470 Series
- [STC SE34WE](https://openairdocs.org/stc/SE34WE): Installation of Electro-Coatings, Inc., piston rings on Continental pistons. Continental Motors, Inc
- [STC SE5820SW](https://openairdocs.org/stc/SE5820SW): Installation of Airmotive exhaust valve, P/N AEC-637781. Continental Motors, Inc
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc
- [STC SE910SW](https://openairdocs.org/stc/SE910SW): The manufacturer of pistons, valve guides, and parts. Continental Motors, Inc
- [STC SE94SW](https://openairdocs.org/stc/SE94SW): Modification of Continental IO-470 Pistons P/N 627738, P/N 539814, and P/N 631481 compression ring grooves from present keystone configuration to rectangular configuration. Continental Motors, Inc. Lists IO-470 Series
- [STC SE3330NM](https://openairdocs.org/stc/SE3330NM): Continental valve cover gasket. Real Gaskets Tennessee
- [STC SE03701AT](https://openairdocs.org/stc/SE03701AT): Increase the main jet size of TCM MA4-5 carburetors of TCM O-470-U engines, to increase engine power from 230 BHP at 2400 RPM to 252 BHP at 2625 RPM. John Jewell Aircraft Inc
- [STC SE267CH](https://openairdocs.org/stc/SE267CH): Installation of Slick Model 6309 and 6313 magnetos. Champion Aerospace LLC
- [STC SE552GL](https://openairdocs.org/stc/SE552GL): Incorporation of a fuel flow transducer. Shadin Avionics
- [STC SA02261CH](https://openairdocs.org/stc/SA02261CH): Increase engine displacement from 470 cubic inches to 520 cubic inches. Chuck Ney Enterprises
- [STC SE1780NM](https://openairdocs.org/stc/SE1780NM): Installation of Precise Flight 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 SE152SO](https://openairdocs.org/stc/SE152SO): Modification of throttle body location. Array Paul S. Lists IO-470 Series
- [STC SE09513SC](https://openairdocs.org/stc/SE09513SC): Installation and usage of Exxon 20W50 Multigrade aircraft engine oil conforming to Exxon Oil Formulation WS-3013. Exxon Company USA. Lists IO-470 Series
- [STC SE09559SC](https://openairdocs.org/stc/SE09559SC): Installation of US Airparts roller rocker arm assemblies P/N US92E exhaust and US92I intake. US Airparts, Inc
- [STC SE55WE](https://openairdocs.org/stc/SE55WE): Modification of fuel injection manifold valve P/N 626547 to the P/N 631427 or P/N 636326 configuration. AAR Aircraft Services Inc. d/b/a AAR Aircraft Services-Oklahoma. Lists IO-470 Series
- [STC SE09319SC](https://openairdocs.org/stc/SE09319SC): Modify oil pan adding a new oil sump drain. Texas Skyways Inc. Lists IO-470 Series
- [STC SE00139SE](https://openairdocs.org/stc/SE00139SE): Replaces the following Teledyne-Continental part numbers: 641682 (Rocker Arm, Exhaust), 539742 (Rocker Arm, Intake), 539740 (Rocker Arm, Shaft) and 538304 (Pushrod Assembly). Dakota Aircraft Parts Inc
- [STC SE3517NM](https://openairdocs.org/stc/SE3517NM): Replacement of the original engine oil screen with an external mounted full flow oil adapter and spin-on filter. Timberman Allen E
- [STC SE8594SW](https://openairdocs.org/stc/SE8594SW): Installation of roller rocker arm P/N PE 92I intake and PE92E exhaust. Performance Engineering
- [STC SE5205NM](https://openairdocs.org/stc/SE5205NM): Installation of an Oilamatic engine filter screen adapter. Oilamatic Inc
- [STC SE775NE](https://openairdocs.org/stc/SE775NE): Installation of Auto-Vac-2 auxiliary vacuum system. Raymond Ives
- [STC SE2450CE](https://openairdocs.org/stc/SE2450CE): Add leaded and unleaded automotive gasoline, 91 minimum antiknock index, (RON+MON)/2. Petersen Aviation Inc
- [STC SE7432SW](https://openairdocs.org/stc/SE7432SW): Installation of Performance Engineering roller rocker arms. Performance Engineering
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists IO-470 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 IO-470 Series
- [STC SE939GL](https://openairdocs.org/stc/SE939GL): Installation of oil filler tube extension. Rapco, Inc
- [STC SE1642SW](https://openairdocs.org/stc/SE1642SW): Modified cylinder assembly G-626820C or G-625859. Gary Aerospace Corp. Lists IO-470 Series
- [STC SE1445SO](https://openairdocs.org/stc/SE1445SO): Use of Aero-blend oil additive in Teledyne (non turbocharged) aircraft engines. ProTec. Lists IO-470 Series
- [STC SE69WE](https://openairdocs.org/stc/SE69WE): BG-341 spark plug as eligible for installation on listed Continental engines. Lewis Leibee
- [STC SE12GL](https://openairdocs.org/stc/SE12GL): Installation of oil filler cap. Ray Whyte Electric Products Co
- [STC SE16WE](https://openairdocs.org/stc/SE16WE): Bendix S-600 low tension ignition system. Salinas Engine Works. Lists IO-470 Series
- [STC SE387SW](https://openairdocs.org/stc/SE387SW): Modification of ring grooves on Continental Motors pistons 539814(3 ring) and 627738 (4 ring). Van Der Horst Corp of America. Lists IO-470 Series
- [STC SE73SO](https://openairdocs.org/stc/SE73SO): Continental GIO-470 engine oil sump assembly 628943 and oil pump suction tube assembly 628660. Aircraft Modification Engineering Company. Lists IO-470 Series
- [STC SE82SO](https://openairdocs.org/stc/SE82SO): Engine sump reworked to provide15 1/8-quart total oil capacity. Riley Aeronautics Corp. Lists IO-470 Series

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