# Continental TSIO-520-H

- Type: Engine model (FAA registry)
- Registry code: 17252
- Manufacturer (registry): CONT MOTOR
- Model: TSIO-520-H
- Engine type: Reciprocating
- Power: 285 hp
- Data sheet: [TCDS E8CE](https://openairdocs.org/tcds/E8CE) (OpenAirDocs)
- Holder: Continental Aerospace Technologies, Inc.
- Installed in: 11 registered aircraft
- Page: https://openairdocs.org/engine/continental-tsio-520-h

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 2016-16-12](https://openairdocs.org/ad/2016-16-12): Cylinder assemblies · Continental Motors LTSIO-520-AE, TSIO-520-A, TSIO-520-AE and 89 more. Effective Sep 15, 2016
- [AD 2014-05-29](https://openairdocs.org/ad/2014-05-29): SAP replacement parts manufacturer approval (PMA) investment cast cylinder assemblies · Continental Motors TSIO-520-A, TSIO-520-AE, TSIO-520-AF and 55 more. Effective Apr 25, 2014
- [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 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 2009-19-07](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 2004-08-10](https://openairdocs.org/ad/2004-08-10): Serial-numbered (SN) cylinders · Modify Teledyne Continental TSIO-520-NB engine (RAM Aircraft Limited Partnership STC SE09104SC or 4 others). Effective May 5, 2004
- [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 97-26-17](https://openairdocs.org/ad/97-26-17): Crankshaft · Continental Motors IO-360-A, IO-360-AB, IO-360-B and 90 more. Effective Jan 23, 1998
- [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 86-13-04 R3](https://openairdocs.org/ad/86-13-04-R3): Cylinder Assemblies · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 44 more. Effective Feb 24, 1988
- [AD 81-24-06](https://openairdocs.org/ad/81-24-06): Engine Driven Fuel Pumps · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 51 more. Effective Nov 23, 1981
- [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 80-01-04](https://openairdocs.org/ad/80-01-04): Cylinder Holddown Flange Assemblies · Continental Motors IO-520-A, IO-520-B, IO-520-BA and 44 more. Effective Jan 25, 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 77-05-04](https://openairdocs.org/ad/77-05-04): Crankshaft · Continental Motors IO-470-L, IO-520-D, IO-520-F and 6 more. Effective Mar 11, 1977
- [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)
- [AD 77-13-22](https://openairdocs.org/ad/77-13-22): Crankcase Cracks · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 22 more

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 2009-16-03](https://openairdocs.org/ad/2009-16-03) (historical): Cylinder assemblies · Continental Motors IO-520-A, IO-520-B, IO-520-BA and 55 more. Effective Sep 9, 2009
- [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

## Information bulletins (advisory) (10)

- [SAIB NE-20-05](https://openairdocs.org/saib/NE-20-05): POWERPLANT - Engine Camshaft Gear Tooth Fracture. Issued Apr 6, 2020
- [SAIB NE-18-16](https://openairdocs.org/saib/NE-18-16): POWERPLANT  Alternator Drive Coupling. Issued Jun 20, 2018
- [SAIB NE-17-11](https://openairdocs.org/saib/NE-17-11): POWERPLANT  Engine damage as a result of kickback. Issued May 10, 2017
- [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-10-07](https://openairdocs.org/saib/NE-10-07): Reciprocating Engine Cylinder: Identification Information for Superior Air Parts, PMA Cylinder Heads for Teledyne Continental Motors (TCM) IO-520, TSIO-520,and IO-550 Series Engines.. Issued Nov 2, 2009
- [SAIB NE-09-08](https://openairdocs.org/saib/NE-09-08): Reciprocating Engine Cylinder Section. Issued Jan 30, 2009
- [SAIB NE-07-09R1](https://openairdocs.org/saib/NE-07-09R1): Periodic Inspections of ECi Cylinder Assemblies for Cracks in the Aluminum Head. Issued Mar 21, 2007

## Registered aircraft (11)

- [N198RP](https://openairdocs.org/aircraft/N198RP): [Aircraft Guaranty Corp Trustee](https://openairdocs.org/faa-owner/AIRCRAFT%20GUARANTY%20CORP%20TRUSTEE), [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City), built 1976, S/N 210-61063
- [N2144Z](https://openairdocs.org/aircraft/N2144Z): [Beerle Brion J](https://openairdocs.org/faa-owner/BEERLE%20BRION%20J), [Anchorage, AK](https://openairdocs.org/faa-place/AK/Anchorage), built 1963, S/N 18051244
- [N2175S](https://openairdocs.org/aircraft/N2175S): [Michael Lauder K](https://openairdocs.org/faa-owner/MICHAEL%20LAUDER%20K), [Littleton, CO](https://openairdocs.org/faa-place/CO/Littleton), built 1975, S/N 21061136
- [N2272R](https://openairdocs.org/aircraft/N2272R): [Berntsen Kurt](https://openairdocs.org/faa-owner/BERNTSEN%20KURT), [Upland, CA](https://openairdocs.org/faa-place/CA/Upland), built 1969, S/N T210-0422
- [N27B](https://openairdocs.org/aircraft/N27B): [Sl Leasing Group LLC](https://openairdocs.org/faa-owner/SL%20LEASING%20GROUP%20LLC), [Barnesville, GA](https://openairdocs.org/faa-place/GA/Barnesville), built 1975, S/N 21061108
- [N505SW](https://openairdocs.org/aircraft/N505SW): [Bas Part Sales LLC](https://openairdocs.org/faa-owner/BAS%20PART%20SALES%20LLC), [Greeley, CO](https://openairdocs.org/faa-place/CO/Greeley), built 1976, S/N 21061185
- [N53TM](https://openairdocs.org/aircraft/N53TM): [Smith Douglas M](https://openairdocs.org/faa-owner/SMITH%20DOUGLAS%20M), [Hackettstown, NJ](https://openairdocs.org/faa-place/NJ/Hackettstown), built 1975, S/N 21060762
- [N5949M](https://openairdocs.org/aircraft/N5949M): [Snflk Leasing LLC](https://openairdocs.org/faa-owner/SNFLK%20LEASING%20LLC), [Andrews, TX](https://openairdocs.org/faa-place/TX/Andrews), built 1972, S/N 421B0319
- [N732BB](https://openairdocs.org/aircraft/N732BB): [Bishop Thomas W](https://openairdocs.org/faa-owner/BISHOP%20THOMAS%20W), [Decatur, TX](https://openairdocs.org/faa-place/TX/Decatur), built 1976, S/N 21061377
- [N899MD](https://openairdocs.org/aircraft/N899MD): [Larson Aeromedical Services LLC](https://openairdocs.org/faa-owner/LARSON%20AEROMEDICAL%20SERVICES%20LLC), [Salem, OR](https://openairdocs.org/faa-place/OR/Salem), S/N 21059984
- [N96734](https://openairdocs.org/aircraft/N96734): [D & G Aviation LLC](https://openairdocs.org/faa-owner/D%20%26%20G%20AVIATION%20LLC), [Woodward, OK](https://openairdocs.org/faa-place/OK/Woodward), built 1976, S/N 21061213

## NTSB investigations (5)

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 WPR25LA071](https://openairdocs.org/ntsb/WPR25LA071), Dec 28, 2024: Cessna T210L (N505SW), Gallup, NM, substantial damage. Probable cause: The pilot’s improper fuel management, which resulted in a total loss of engine power.
- [NTSB GAA17CA231](https://openairdocs.org/ntsb/GAA17CA231), Apr 12, 2017: Cessna 180 (N2144Z), Kenai, AK, substantial damage. Probable cause: The pilot’s failure to maintain directional control during the landing roll with crosswind conditions.
- [NTSB FTW98LA341](https://openairdocs.org/ntsb/FTW98LA341), Jul 4, 1998: Cessna T210K (N8132G), Del Norte, CO, substantial damage. Probable cause: The pilot's improper touchdown point for landing. Factors were the high density altitude, the downhill sloping runway, and the ditch off the end of the runway.
- [NTSB LAX77FUG50](https://openairdocs.org/ntsb/LAX77FUG50), Jun 30, 1977: Cessna T210 (N8132G), La Verne, CA, substantial damage
- [NTSB ANC76DAG43](https://openairdocs.org/ntsb/ANC76DAG43), Sep 23, 1975: Cessna 180 (N2144Z), Nondalton, AK, substantial damage

## FAA accident and incident reports (11)

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 20241227021689A](https://openairdocs.org/incident/20241227021689A), Dec 27, 2024: Cessna T210L (N505SW), Gallup, NM, Substantial damage. Narrative: On 12/27/2024, the private pilot departed VFR ( no flight plan filed) from lake havasu, Arizona, at about 1930 with one passenger headed for Gallup,…
- [Accident 20170411005719A](https://openairdocs.org/incident/20170411005719A), Apr 11, 2017: Cessna 180F (N2144Z), Kenai, AK, Substantial damage. On landing rollout a sudden gust of wind pushed the aircraft to the side of the runway, the aircraft exited the pavement into the grass/dirt then ground looped…
- [Incident 20140619013369I](https://openairdocs.org/incident/20140619013369I), Jun 19, 2014: Cessna T210J (N2272R), Mariposa, CA, Minor damage. Aircraft landed gear up. Pilot indicated he forgot to lower the gear on final. Pilot also noted he did not hear the gear warning horn through his head set.
- [Incident 19991123033339I](https://openairdocs.org/incident/19991123033339I), Nov 23, 1999: Cessna T210J (N2272R), Moberly, MO, Minor damage. (-23) The pilot rushed the descent, did not use the checklist, and forgot to lower the landing gear. Incident #CE2000IBA0010 is closed.
- [Accident 19980704022079A](https://openairdocs.org/incident/19980704022079A), Jul 4, 1998: Cessna T210K (N8132G), Del Norte, CO, Minor damage. Landed long and fast. Unable stop on runway. Ran off. Failed compensate for slope and density altitude. (-23)pilot stated she did not compensate for density…
- [Incident 19911016051069I](https://openairdocs.org/incident/19911016051069I), Oct 16, 1991: Cessna 421B (N5949M), Garden City, KS, Minor damage. Left main landing gear collapsed on landing rollout. Left downlock link assembly had broken.
- [Incident 19790225007599I](https://openairdocs.org/incident/19790225007599I), Feb 25, 1979: Cessna T210L (N2175S), Conway, AR, Minor damage. Power loss due to throttle cable detachment. Emergency runway had 6 inches of snow. Struck snowbank on rollout.
- [Incident 19780824049239I](https://openairdocs.org/incident/19780824049239I), Aug 24, 1978: Cessna 210 (N732BB), Moriarty, NM, Minor damage. Nose gear sunk into gopher hole while taxiing.
- [Incident 19780211007029I](https://openairdocs.org/incident/19780211007029I), Feb 11, 1978: Cessna 210 (N8132G), Big Bear City, CA, Substantial damage. Pilot touched down on side of runway, one main wheel caught in the snow. Aircraft swerved into a snowbank.
- [Accident 19770630017839A](https://openairdocs.org/incident/19770630017839A), Jun 30, 1977: Cessna 210H (N8132G), La Verne, CA, Substantial damage. R gr didnt extend fully. Twr gave red lt on final. No radio in acft.
- [Accident 19750923031759A](https://openairdocs.org/incident/19750923031759A), Sep 23, 1975: Cessna 180F (N2144Z), Nondalton, AK, Substantial damage. Carb iced up due carb heat ctl cable slipping in locking slot. Lnd in tundra.

## Service difficulty reports (28)

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

- [SDR 2014FA0000560](https://openairdocs.org/sdr/2014FA0000560), Jul 29, 2014: TUBE. FAILED. ENROUTE, MANIFOLD PRESSURE DROPPED TO 24". INDUCTION TUBE FROM COMPRESSOR TO THROTTLEBODY FAILED WITH A 2" TO 3" HOLE ONLEFT SIDE BLEW OUT.
- [SDR CA090826018](https://openairdocs.org/sdr/CA090826018), Aug 24, 2009: CABLE. FAILED. OWNER/PILOT REPORTED THAT AFTER LANDING, FLAPS WOULD NOT RETRACT TO FULL UP NOR DID FLAP INDICATOR INDICATE CORRECT POSITION OF FLAPS. TROUBLESHOOTING REVEALED 
- [SDR 2009FA0000004](https://openairdocs.org/sdr/2009FA0000004), Dec 10, 2008: BOLT. FAILED. DURING CLIMB TO CRUISE ENGINE MADE A LOUD NOISE AND QUIT RUNNING, ENGINE REMAINED WINDMILLING TO LANDING. VISUAL INSP REVEALED NR 3 CYLINDER ROD BOLT MISSING, R
- [SDR CA061019009](https://openairdocs.org/sdr/CA061019009), Oct 18, 2006: SPRING. BROKEN. (CAN) NOTE THE SERIAL NUMBER ON THE ENGINE ON THIS FORM IS INCORRECT IT IS 217469-R. THE IMPULSE COUPLING SPRING WAS FOUND BROKEN. CUSTOMER HAD COMPLAINED OF RO
- [SDR CA061109004](https://openairdocs.org/sdr/CA061109004), Sep 22, 2006: BRACKET. LOOSE. (CAN) BRACKET P/N 1243019-2 FOUND LOOSE AGAINST TORQUE TUBE P/N 1234650-2. LOOSE FASTENERS REMOVED AND REPLACED. (TC NR 20061109004)
- [SDR AU510001486](https://openairdocs.org/sdr/AU510001486), Dec 12, 2005: CRANKCASE. DAMAGED. (AUS) CRANKCASE HOLED. LOSS OF POWER IN NR 4 AND NR 6 CYLINDERS. (CASA# 510001486)
- [SDR CA050302004](https://openairdocs.org/sdr/CA050302004), Mar 21, 2005: DOUBLER. CRACKED. (CAN) THE BULKHEAD DOUBLER REINFORCES THE HOLE WHERE THE HORIZONTAL STAB ATTCHES. DOUBLER SPLIT IN TWO THROUGH THE ANCHOR NUT RIVIT HOLE. THIS DOUBLER IS ONLY F
- [SDR 2004FA0000580](https://openairdocs.org/sdr/2004FA0000580), Jul 14, 2004: BOLT. MISSING. WHILE MAKING A APPROACH TO THE AIRPORT FOR LANDING, THE PILOT ADDED POWER WITH NO ENGINE RESPONSE. THE THROTTLE CABLE DISCONNECTED FROM THE ENGINE CONTROL ARM D
- [SDR CA040622005](https://openairdocs.org/sdr/CA040622005), Jun 6, 2004: BELT. FAILED. (CAN) THE ALTERNATOR DRIVE BELT CAME OFF IN FLIGHT.
- [SDR 2004FA0000432](https://openairdocs.org/sdr/2004FA0000432), May 21, 2004: PUMP. INOPERATIVE. ENGINE DRIVEN FUEL PUMP NO METERED OR UN METERED FUEL PRESSURE WHILE ENGINE RUNNING. FUEL PUMP RECENTLY INSTALLED HAD 2.7 HOURS ON IT, AFTER OVERHAUL. INSTALLED
- [SDR CA010503013](https://openairdocs.org/sdr/CA010503013), Apr 18, 2001: TORQUE LINK. CRACKED. (CAN) UPPER NOSE GEAR TORQUE LINK FOUND CRACKED AS SHOWN. CRACK WAS IN TWO LOCATIONS ABOUT 1/8 INCH LONG. PART HAD NOT FAILED.THIS IS THE SECOND PART FOUND CRAC
- [SDR 20010403CW012](https://openairdocs.org/sdr/20010403CW012), Feb 24, 2001: ROD. DEPARTED. AIRCRAFT ARRIVED WITH RIGHT ENGINE OIL LEAK. FOUND OIL LINE TO BE LEAKING. REPAIRED OIL LINE AND SERVICED BACK UP WITH OIL. ENGINE WAS RERUN AND A ROD CAME LOOS
- [SDR CA000802023](https://openairdocs.org/sdr/CA000802023), Jul 14, 2000: SOLENOID. FAILED. (CAN) AFTER TAKEOFF AND LANDING SELECTED UP AND LOCKED. LANDING GEAR CIRCUIT BREAKER TRIPPED. (PROBLEM RETURNED INTERMITTENTLY.) PROBLEM TRACED TO DEFECTIVE LAN
- [SDR CA000802024](https://openairdocs.org/sdr/CA000802024), Jul 14, 2000: BRACKET. CRACKED. (CAN) DURING THE INSPECTION OF THE STABILIZER, A CRACK WAS FOUND ON THE INBOARD LT STABILIZER BRACKET TO ELEVATOR P/N 1232624-1 ATTACHED TO THE SPAR. PROBLEM WA
- [SDR 20000522SH016](https://openairdocs.org/sdr/20000522SH016), May 15, 2000: RISER. CRACKED. MAINTENANCE LOOKED AT ACFT BEFORE FLIGHT. COWLING WAS REMOVED AND EXHAUST SOOT WAS SEEN AROUND LOWER SIDE OF NR 4 CYLINDER. FURTHER INVESTIGATION REVEALED A CRA
- [SDR 99ZZZX922](https://openairdocs.org/sdr/99ZZZX922), Feb 8, 1999: PIN. MISMANUFACTURED. NEW VAR TYPE CRANK WAS RECEIVED TO REPLACE A NON-VAR TYPE. COUNTERWEIGHTS WERE AS INSTALLED BY TCM. COUNTERWEIGHTS WERE REMOVED TO CHECK PIN SIZES AND PART NUMB
- [SDR 98ZZZX1582](https://openairdocs.org/sdr/98ZZZX1582), Apr 8, 1998: CYLINDER. SEPARATION. INSPECTION FOUND NR 2 CYLINDER SEPARATED BETWEEN BORE AND HEAD.
- [SDR AU980402](https://openairdocs.org/sdr/AU980402), Mar 24, 1998: VALVE. WORN. (AUS) THREE ENGINE CYLINDERS REMOVED DUE TO LOW COMPRESSION. ALL EXHAUST VALVES PN 646286 AND VALVE GUIDES PN 636242 WERE FOUND TO BE WORN BEYOND LIMITS WITH 0.
- [SDR AU980392](https://openairdocs.org/sdr/AU980392), Feb 1, 1998: STRUCTURE. MISINSTALLED. (AUS) HORIZONTAL STABILIZER SPAR CAP CRACKED IN AREA OF THE LOWER REAR MOUNT BOLT HOLES. CRACK LENGTHS 12.7MM (0.5 INCH). INVESTIGATION FOUND NEW PN 1232624-1 R
- [SDR CA971027010](https://openairdocs.org/sdr/CA971027010), Jul 17, 1997: FUEL PUMP. RUSTED. (CAN) RIGHT AUXILIARY FUEL PUMP FOUND RUSTED. ALSO LEFT AND RIGHT CHECK VALVES PART NO. FACKV-5-100-6 FOUND CLOGGED. THIS AS A RESULT OF INSTALLATION OF FLINT A
- [SDR CA970506010](https://openairdocs.org/sdr/CA970506010), Apr 29, 1997: BLADE. DAMAGED. (CAN) PROPELLER RECEIVED FOR CORROSION INSPECTION. LEADING EDGE OF THE PROPELLER BLADE WAS FOUND DAMAGED. REWORK AND GRINDING WAS REQUIRED TO FIX THE AIRFOIL ON
- [SDR 97ZZZX2120](https://openairdocs.org/sdr/97ZZZX2120), Apr 23, 1997: SPRING. BROKEN. TROUBLESHOOTING OF 400 RPM MAG DROP FOUND LEFT MAGNETO TIMING AT 7 DEGREES BTC. REMOVED MAG AND FOUND IMPULSE COUPLING SPRING BROKEN TWO INCHES FROM OUTER END.
- [SDR 97ZZZX14](https://openairdocs.org/sdr/97ZZZX14), Oct 31, 1996: HUB. CRACKED. DURING 100 HOUR INSPECTION, FOUND PROP HUB CRACKED AT 5 OF THE 6 MOUNTING STUDS.
- [SDR CA960826021](https://openairdocs.org/sdr/CA960826021), Aug 8, 1996: REINFORCEMENT. CRACKED. (CAN) HORIZONTAL STAB REINFORCEMENT BRACKET REPLACED WITH HEAVIER REPLACEMENT PART SUPPLIED THROUGH CESSNA.
- [SDR 96ZZZX3774](https://openairdocs.org/sdr/96ZZZX3774), Jul 11, 1996: CYLINDER. SEPARATED. PILOT REPORTED ROUGH ENGINE AND LARGE RPM DROP ON MAG CHECK. INSPECTION FOUND NR 3 CYLINDER CRACKED. WHEN CYLINDER REMOVED, IT WAS DISCOVERED THE HEAD WAS COMPL
- [SDR 96ZZZX4958](https://openairdocs.org/sdr/96ZZZX4958), Jul 5, 1996: CRANKSHAFT. FLANGE FAILED. PROPELLER AND CRANKSHAFT PROPELLER FLANGE SEPARATED FROM ENGINE.
- [SDR AU960602](https://openairdocs.org/sdr/AU960602), May 10, 1996: LINK. BROKEN. (AUS) PROPELLER NO1 BLADE PITCH CHANGE LINK BROKEN - FURTHER INSPECTION FOUND INCORRECT BLADE RETENTION NUT 'O' RINGS FITTED - PROPELLER IS GREASE FILLED WITH O
- [SDR 96ZZZX383](https://openairdocs.org/sdr/96ZZZX383), Oct 15, 1995: GUIDE. WORN. INSTALLED 6 CERMICHROME CYLINDER REBUILT UNITS WITH 643767 GUIDES. 120 SMOA. COMPRESSION LEAK ON TWO CYLINDERS. PULLED ALL 6 AND RETURNED UNITS TO ECI. THEY DIA

## STCs that may be installed (OpenAirDocs) (58, 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 SE5583SW](https://openairdocs.org/stc/SE5583SW): Installation of fuel flow transducers (true-flow totalizer). Alcor LLC. Lists TSIO-520 Series
- [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 SE5009NM](https://openairdocs.org/stc/SE5009NM): Installation of a modified exhaust system. Aerospace Welding Minneapolis 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 SE2599NM](https://openairdocs.org/stc/SE2599NM): Installation of an air intercooler in the engine induction system downstream of the turbocharger. Western Skyways Aircraft Modifications Inc
- [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 SE96WE](https://openairdocs.org/stc/SE96WE): Installation of oil fitting(AN-823-5D) in rocker box cover. Airwolf Filter Corporation
- [STC SE0417CH](https://openairdocs.org/stc/SE0417CH): Turbo-normalization. Western Skyways Aircraft Modifications Inc
- [STC SE00113SE](https://openairdocs.org/stc/SE00113SE): Replaces Teledyne-Continental Part Number 646277 lifter bodies. B & B Aviation LLC
- [STC SE5784NM](https://openairdocs.org/stc/SE5784NM): Replacement of Teledyne Continental original camshaft. B & B Aviation LLC
- [STC SE03415CH](https://openairdocs.org/stc/SE03415CH): The turbo-normalization of Continental Motors engine models IO-520-A, -F, -J, and -L, TSIO-520-C, -G, -H, -M, and -R, and IO-550-F and L for installation into Cessna 206, 207 & 210 aircraft. DERS Group Svc LLC
- [STC SE70RM](https://openairdocs.org/stc/SE70RM): Installation of compressor bracket. Air Comm Corporation
- [STC SE09637SC](https://openairdocs.org/stc/SE09637SC): Remove existing rocker arm assemblies and install modify rocker arm assemblies. General Aviation Modifications Inc
- [STC SE2393NM](https://openairdocs.org/stc/SE2393NM): Installation of a magneto pressurization kit assembly and associated system for Bendix Models S6RN-1201 and 1205, and SLICK Models 662, 680, 6210 and 6220. Turboplus Aircraft Systems, Inc
- [STC SE1186SW](https://openairdocs.org/stc/SE1186SW): Regrooving of pistons P/N 631475 or P/N 632585. Continental Motors, Inc
- [STC SE5820SW](https://openairdocs.org/stc/SE5820SW): Installation of Airmotive exhaust valve, P/N AEC-637781. Continental Motors, Inc. Lists TSIO-520 Series
- [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists TSIO-520 Series
- [STC SE04117CH](https://openairdocs.org/stc/SE04117CH): Conversion of Continental Motors engine models TSIO-520-C, -G, -H, -M & -R to the naturally aspirated IO-520-A, -F, -J & -L. Western Skyways
- [STC SE3330NM](https://openairdocs.org/stc/SE3330NM): Continental valve cover gasket. Real Gaskets Tennessee
- [STC SE09280SC-D](https://openairdocs.org/stc/SE09280SC-D): Modify engine in accordance with RAM Aircraft Corporation Drawing No. 1888. RAM Aircraft Limited Partnership
- [STC SE3631SW-D](https://openairdocs.org/stc/SE3631SW-D): Cylinder modifications. RAM Aircraft Limited Partnership
- [STC SE5726SW-D](https://openairdocs.org/stc/SE5726SW-D): Installation of Floscan - 20lb or - 203b fuel flow transducers. RAM Aircraft Limited Partnership
- [STC SE09846SC](https://openairdocs.org/stc/SE09846SC): Installation of S539800M30 starter adapter springs. Aircraft Specialties Services Inc
- [STC SE444GL](https://openairdocs.org/stc/SE444GL): Incorporation of a fuel flow transducer. Shadin Avionics
- [STC SE630SW](https://openairdocs.org/stc/SE630SW): Engine modifications. RAM Aircraft Limited Partnership
- [STC SE4651SW](https://openairdocs.org/stc/SE4651SW): Installation of Slick pressurized magnetos. Also eligible on Teledyne Continental TSIO-520-NB engines modified per STC SE4327SW. RAM Aircraft Limited Partnership
- [STC SE1780NM](https://openairdocs.org/stc/SE1780NM): Installation of Precise Flight standby vacuum system (SVS III). Precise Flight Inc
- [STC SE5726SW](https://openairdocs.org/stc/SE5726SW): Installation of Floscan -201b or -203b fuel flow transducers. RAM Aircraft Limited Partnership
- [STC SE5743NM](https://openairdocs.org/stc/SE5743NM): Intallation of adapter for externally mounted oil filter. Aviation Development Corporation
- [STC SE09261SC](https://openairdocs.org/stc/SE09261SC): Modify engine to increase power output rating from 310 hp to 335 hp, install Garrett/AlliedSignal TA-81 turbocharger, RAM intercooler, RAM economy camshaft, RAM oil pump pickup tube, RAM forged pistons with gapless rings, and 0.02 inch undersized crankshaft. RAM Aircraft Limited Partnership. Lists TSIO-520 Series
- [STC SE3631SW](https://openairdocs.org/stc/SE3631SW): Cylinder modification. RAM Aircraft Limited Partnership. Lists TSIO-520 Series
- [STC SE5455SW](https://openairdocs.org/stc/SE5455SW): Unpressurized Slick 6220 magnetos. RAM Aircraft Limited Partnership
- [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 TSIO-520 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 TSIO-520 Series
- [STC SE2680NM](https://openairdocs.org/stc/SE2680NM): Installation of a wastegate actuator drain line. Machen Inc
- [STC SE09289SC](https://openairdocs.org/stc/SE09289SC): Installation of modified fuel injector nozzles. General Aviation Modifications, Inc. Lists TSIO-520 Series
- [STC SE00577NY](https://openairdocs.org/stc/SE00577NY): Installation of Canadian Aero Mfg. (C.A.M.) Oil Coolers. Canadian Aero Manufacturing
- [STC SE09319SC](https://openairdocs.org/stc/SE09319SC): Modify oil pan adding a new oil sump drain. Texas Skyways Inc. Lists TSIO-520 Series
- [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation
- [STC SE00427NY](https://openairdocs.org/stc/SE00427NY): Installation, operation and inspection of CAM oil coolers. Canadian Aero Manufacturing
- [STC SE00144SE](https://openairdocs.org/stc/SE00144SE): 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 SE8687SW](https://openairdocs.org/stc/SE8687SW): Regrooving of pistons P/N 631475 or P/N 632585. Capehart Industries, Inc. Lists TSIO-520 Series
- [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 SE7430SW](https://openairdocs.org/stc/SE7430SW): Installation of Performance Engineering roller rocker arms. Performance Engineering
- [STC SE941GL](https://openairdocs.org/stc/SE941GL): Installation of oil filler tube extension. Rapco, Inc
- [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists TSIO-520 Series

All 58: https://openairdocs.org/engine/continental-tsio-520-h/stcs.md

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