# Continental TSIO-520-B

- Type: Engine model (FAA registry)
- Registry code: 17249
- Manufacturer (registry): CONT MOTOR
- Model: TSIO-520-B
- Engine type: Reciprocating
- Power: 285 hp
- Data sheet: [TCDS E8CE](https://openairdocs.org/tcds/E8CE) (OpenAirDocs)
- Holder: Continental Aerospace Technologies, Inc.
- Installed in: 9 registered aircraft
- Page: https://openairdocs.org/engine/continental-tsio-520-b

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 2012-10-13](https://openairdocs.org/ad/2012-10-13): Starter adapters · Continental Motors IO-550-N, TSIO-520-B, TSIO-520-BB and 14 more. Effective Jun 8, 2012
- [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 93-16-15](https://openairdocs.org/ad/93-16-15): Fuel Pump Drive Shaft · Continental Motors IO-520-B, IO-520-BA, IO-520-BB and 27 more. Effective Dec 14, 1993
- [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 89-24-01 R1](https://openairdocs.org/ad/89-24-01-R1): Scavenge Oil Pump Gears · Continental Motors TSIO-520-B, TSIO-520-BB, TSIO-520-D and 11 more. Effective Aug 10, 1990
- [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 75-09-13](https://openairdocs.org/ad/75-09-13): Turbocharger Oil Inlet Adapter · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 9 more. Effective Apr 24, 1975
- [AD 72-24-03](https://openairdocs.org/ad/72-24-03): Oil Filter Adapter · Continental Motors IO-360-A, IO-520-B, IO-520-C and 3 more. Effective Nov 15, 1972
- [AD 71-09-03](https://openairdocs.org/ad/71-09-03): Gasket and/or Fuel Leakage · Continental Motors TSIO-360-A, TSIO-520-B, TSIO-520-D and 2 more. Effective Apr 29, 1971
- [AD 69-18-05](https://openairdocs.org/ad/69-18-05): Turbocharger Lubricating Oil Scavenge Pump · Continental Motors TSIO-520-B, TSIO-520-D and TSIO-520-E. Effective Sep 4, 1969
- [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 2011-25-51](https://openairdocs.org/ad/2011-25-51) (historical): Starter Adapter Gear Shaft · Continental Motors IO-550-N, TSIO-520-B, TSIO-520-BB and 14 more. Effective Dec 28, 2011
- [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 (9)

- [N310HM](https://openairdocs.org/aircraft/N310HM): [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 1978, S/N 310R1282
- [N320MS](https://openairdocs.org/aircraft/N320MS): [Consulat Inc](https://openairdocs.org/faa-owner/CONSULAT%20INC), [Cheyenne, WY](https://openairdocs.org/faa-place/WY/Cheyenne), built 1966, S/N 320E-0065
- [N3494Q](https://openairdocs.org/aircraft/N3494Q): [Rodcon Aircraft Sales LLC](https://openairdocs.org/faa-owner/RODCON%20AIRCRAFT%20SALES%20LLC), [Kalispell, MT](https://openairdocs.org/faa-place/MT/Kalispell), built 1967, S/N 320E-0094
- [N363RM](https://openairdocs.org/aircraft/N363RM): [Mash Kity J LLC](https://openairdocs.org/faa-owner/MASH%20KITY%20J%20LLC), [Grand Rapids, MI](https://openairdocs.org/faa-place/MI/Grand%20Rapids), built 1974, S/N 310R0046
- [N486MH](https://openairdocs.org/aircraft/N486MH): [Mh Group LLC](https://openairdocs.org/faa-owner/MH%20GROUP%20LLC), [Duncan, OK](https://openairdocs.org/faa-place/OK/Duncan), built 1978, S/N 340A0481
- [N5793M](https://openairdocs.org/aircraft/N5793M): [Coxbill Farms Inc](https://openairdocs.org/faa-owner/COXBILL%20FARMS%20INC), [Torrington, WY](https://openairdocs.org/faa-place/WY/Torrington), built 1969, S/N 310P0093
- [N5825M](https://openairdocs.org/aircraft/N5825M): [Lee Brian P](https://openairdocs.org/faa-owner/LEE%20BRIAN%20P), [Kent, WA](https://openairdocs.org/faa-place/WA/Kent), built 1969, S/N 310P0125
- [N685CP](https://openairdocs.org/aircraft/N685CP): [Southern Aircraft Consultancy Inc Trustee](https://openairdocs.org/faa-owner/SOUTHERN%20AIRCRAFT%20CONSULTANCY%20INC%20TRUSTEE), [Casper, WY](https://openairdocs.org/faa-place/WY/Casper), built 1978, S/N 310R-1375
- [N969TH](https://openairdocs.org/aircraft/N969TH): [Mgi Proflight LLC](https://openairdocs.org/faa-owner/MGI%20PROFLIGHT%20LLC), [Las Vegas, NV](https://openairdocs.org/faa-place/NV/Las%20Vegas), built 1978, S/N 310R1379

## NTSB investigations (1)

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 CEN15FA425](https://openairdocs.org/ntsb/CEN15FA425), Sep 25, 2015: Cessna T310Q (N301JA), Wichita, KS, destroyed, 1 fatal. Probable cause: The separation of the attachment hardware connecting the elevator trim tab pushrod to the elevator trim actuator, which resulted in the elevator trim tab jamming in a position outside the limits of…

## FAA accident and incident reports (4)

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 20150925017389A](https://openairdocs.org/incident/20150925017389A), Sep 25, 2015: Cessna T310Q (N301JA), Wichita, KS, Destroyed, 1 fatal. On September 25, 2015, at approximately 1550 central daylight time, a Cessna T310Q airplane, N301JA, was destroyed after declaring an emergency and…
- [Incident 19910712040559I](https://openairdocs.org/incident/19910712040559I), Jul 12, 1991: Cessna 320E (N3494Q), Deming, NM, Minor damage. Unable to lock nose gear down. Landed on mains and nose gear collapsed on contact. Push pull rod broken.
- [Incident 19910501013899I](https://openairdocs.org/incident/19910501013899I), May 1, 1991: Cessna 320E (N3494Q), Deming, NM, Minor damage. Pilot being checked out in aircraft forgot to lower landing gear and landed gear up.
- [Incident 19821129068629I](https://openairdocs.org/incident/19821129068629I), Nov 29, 1982: Cessna T310P (N5793M), Clearwater, FL, Minor damage. Left wing tank struck a parked aircraft while turning out from parking space.

## Service difficulty reports (25)

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

- [SDR 2020FA0000428](https://openairdocs.org/sdr/2020FA0000428), Sep 10, 2020: SWITCH. BROKEN. RIGHT GEAR DOWN LIGHT WOULD NOT ILLUMINATE ON LANDING. I LOOKED AT THE LANDING GEAR WHEN THE PLANE WAS TOWED IN TO MY SHOP. I FOUND THE LANDING GEAR MICRO SWITC
- [SDR 2016FA0000038](https://openairdocs.org/sdr/2016FA0000038), Dec 20, 2015: PISTON RING. BROKEN. NR 1 AND NR 2 TOP RING LAN FAILURE. ENGINE LOSS OF COMRESSION. FOUND LOOKING AT TOP OF PISTON FROM ABOUT 7 O`CLOCK POSITION TO 11 O`CLOCK RING LAN MISSING AND B
- [SDR CA141007007](https://openairdocs.org/sdr/CA141007007), Oct 3, 2014: CYLINDER HEAD. LEAKING. (CAN) OWNER REPORTED A SMALL OIL LEAK ON BOTH ENGINES. UPON INVESTIGATING IT WAS FOUND THAT EACH ENGINE HAD A CRACKED CYLINDER HEAD. 4 CYLINDERS WERE REPLACED 9
- [SDR CA130725001](https://openairdocs.org/sdr/CA130725001), Jul 24, 2013: CYLINDER HEAD. DAMAGED. (CAN) FOUND DURING UNSCHEDULED MAINTENANCE A BLUE STREAK ON COWLING. UPON FURTHER INVESTIGATION NR 5 CYLINDER LT ENGINE WAS FOUND TO BE LEAKING FUEL JUST ABOVE 
- [SDR CA091124006](https://openairdocs.org/sdr/CA091124006), Nov 23, 2009: LANDING GEAR. STUCK. (CAN) NOSE RETRACTION AFTER TAKEOFF, NLG STUCK IN PARTIALLY RETRACTED POSITION. EMERGENCY EXTENSION ATTEMPTED WITH NO MOVEMENT IN NOSE GEAR. EMERGENCY LANDING C
- [SDR 2007FA0000772](https://openairdocs.org/sdr/2007FA0000772), Apr 1, 2007: BOLT. SHEARED. AIRCRAFT HAS EXPERIENCED A RT LANDING GEAR FAILURE UPON LANDING. PRIOR TO THIS INCIDENT, THE LANDING GEAR HAD BEEN CHECKED DURING THE AIRCRAFT ANNUAL INSPECTION
- [SDR CA060821002](https://openairdocs.org/sdr/CA060821002), Aug 15, 2006: WIRE HARNESS. WRONG PART. (CAN) HARNESS TOO SHORT WOULD NOT ALLOW PROPELLER TO FEATHER. PILOT COULD NOT FEATHER LT OR RT PROPELLERS DURING TRAINING FLIGHT. WRONG PROPELLER DEICE WIRING H
- [SDR 2005FA0000770](https://openairdocs.org/sdr/2005FA0000770), May 19, 2005: ROD. BROKEN. DURING CRUISE FLT, ENG BEGAN TO VIBRATE SEVERELY AND PILOT SHUTDOWN. TEARDOWN AND INVESTIGATION REVEALED THE NR 2 ROD BROKE 1/2 WAY BETWEEN PISTON AND CRANK. IT
- [SDR CA040723003](https://openairdocs.org/sdr/CA040723003), Jul 12, 2004: WIRE. FAILED. (CAN) TAKEOFF, LANDING GEAR FAILED TO RETRACT. GEAR CB POPPED IMMEDIATELY ON SELECT UP, CAUSED 3 GREEN (SAFE GEAR) LIGHTS TO GO OUT. THE CB WAS RESET, IMMEDIATE
- [SDR CA030603007](https://openairdocs.org/sdr/CA030603007), May 28, 2003: BELLCRANK. BROKEN. (CAN) WHEN GEAR WAS SELECTED UP AFTER TAKE OFF A LOUD SNAP WAS HEARD THE RED GEAR LIGHT WAS ON. WHEN GEAR WAS SELECTED DOWN THE 3 GREEN GEAR LIGHTS WAS OBTAINED
- [SDR AUS20030446](https://openairdocs.org/sdr/AUS20030446), Apr 10, 2003: CRANKSHAFT. CRACKED. (AUS) CRANKSHAFT CRACKED RADIALLY IN AREA LOCATED BEHIND THE PROPELLER FLANGE. CRACK LENGTH APPROXIMATELY 50.8MM (2IN).
- [SDR CA030211008](https://openairdocs.org/sdr/CA030211008), Jan 7, 2003: ACTUATOR. FAILED. (CAN) CJ0701 ACTUATOR TAB IS A SMALL METAL TAB THAT FITS ON PORT GEAR DOWN SWITCH. TAB FAILED DUE TO METAL FATIGUE CAUSING INTERMITTENT GEAR SAFE LIGHT ON PORT 
- [SDR 20000505SH023](https://openairdocs.org/sdr/20000505SH023), Apr 5, 2000: VALVE GUIDE. WORN. VERY LOW COMPRESSION NOTED IN THE NR 3 CYL ON RT ENGINE DURING ANNUAL INSP. THE CYL REMOVED AND INSPECTED. THE EXHAUST VALVE GUIDE WAS WORN TO THE POINT WHERE T
- [SDR AU000604](https://openairdocs.org/sdr/AU000604), Feb 26, 2000: LANDING GEAR. COLLAPSED. (AUS) PILOT REPORTED THAT THE LANDING GEAR RETRACTED BY ITSELF. POST-RETRACTION/EXTENSION TESTS CARRIED OUT WITHOUT INCIDENT. AS A PRECAUTION, THE LG MOTOR WAS 
- [SDR 99ZZZX510](https://openairdocs.org/sdr/99ZZZX510), Jan 7, 1999: DIPSTICK. BROKEN. DIPSTICK BECAME SEPARATED FROM CAP ALLOWING THE DIPSTICK AND SPRING TO DROP INTO DIPSTICK TUBE. THERE ARE FOUR TUBES BUILT INTO THE CAP AND 3 OF THE 4 WERE BROK
- [SDR AU981655](https://openairdocs.org/sdr/AU981655), Dec 2, 1998: ENGINE. DETERIORATED. (AUS) DURING SCHEDULED ENGINE MAINTENANCE, THE FOLLOWING PROBLEMS WERE FOUND: 1. ENGINE OIL FILTER INSPECTED AND FOUND (EXCESSIVE) HIGH LEVELS OF COPPER. 2. TWO
- [SDR 98ZZZX4779](https://openairdocs.org/sdr/98ZZZX4779), Oct 28, 1998: CYLINDER. CRACKED. DURING 100-HOUR INSPECTION COMPRESSION CHECK, FOUND NR 3 CYLINDER CRACKED FROM THE EXHAUST VALVE GUIDE TO THE SPARK PLUG HOLE.
- [SDR AU981311](https://openairdocs.org/sdr/AU981311), Aug 21, 1998: PUMP. LEAKING. (AUS) ENGINE FUEL PUMP LEAKING FROM AREA OF THE MIXTURE SHAFT. PART TC: 787.
- [SDR AU980911](https://openairdocs.org/sdr/AU980911), Jul 29, 1998: BRACKET. CRACKED. (AUS) WING BRACKET CRACKED.
- [SDR AU980383](https://openairdocs.org/sdr/AU980383), Apr 6, 1998: ENGINE. MISREPAIRED. (AUS) BROKEN MAIN BEARING PIECES FOUND IN SUMP. AFTER ENGINE STRIP-DOWN, THE FOLLOWING DEFECTS WERE FOUND: 1. OVERSIZED PISTON AND CYLINDER ASSEMBLIES FITTED. 2
- [SDR 97ZZZX4248](https://openairdocs.org/sdr/97ZZZX4248), Sep 17, 1997: SPRING. BROKEN. ENGINE RUNNING ROUGH. EXHAUST VALVE LEAKING ON COMPRESSION TEST. FOUND OUTER SPRING BROKEN 180 HOURS S.F.R.
- [SDR 97ZZZX1007](https://openairdocs.org/sdr/97ZZZX1007), Feb 26, 1997: CAMSHAFT. FAILED. TSIO520VB ENGINE REPORTED FAILURE. FOUND CAMSHAFT FAILED JUST FORWARD OF GOVERNOR DRIVE GEAR. RENDERED GOVERNOR INOPERATIVE.
- [SDR AU961202](https://openairdocs.org/sdr/AU961202), Aug 12, 1996: RIVET. DETERIORATED. (AUS) RH AND LH AFT CANTED BULKHEAD RIVETS DETERIORATED - RIVET HEADS MISSING
- [SDR CA960305201](https://openairdocs.org/sdr/CA960305201), Feb 29, 1996: EXHAUST TEE. CRACKED. (CAN) EXTENSIVE CRACKING OF THIS EXHAUST COMPONENT CAUSED A LOSS OF MANIFOLD PRESSURE DUE TO TURBOCHARGER INACTIVITY. THE LEFT REAR ENGINE ISOLATOR RECEIVED HEA
- [SDR 95ZZZX965](https://openairdocs.org/sdr/95ZZZX965), Feb 7, 1995: CAPACITOR. FAILED. DURING ENGINE RUN-UP FOR A ROUTINE 50-HOUR INSPECTION, THE MECHANIC NOTED THE RIGHT ENGINE, RIGHT MAGNETO DID NOT RESPOND TO THE IGNITION SWITCH. FURTHER INVEST

## STCs that may be installed (OpenAirDocs) (56, 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 SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller 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 SE00113SE](https://openairdocs.org/stc/SE00113SE): Replaces Teledyne-Continental Part Number 646277 lifter bodies. B & B Aviation LLC
- [STC SE5785NM](https://openairdocs.org/stc/SE5785NM): Replacement of Teledyne Continental original camshaft with P/N 32122-2. B & B Aviation 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 SE1186SW](https://openairdocs.org/stc/SE1186SW): Regrooving of pistons P/N 631475 or P/N 632585. Continental Motors, Inc
- [STC SE2340SW](https://openairdocs.org/stc/SE2340SW): Installation of modified cylinder assemblies, barrels, piston, and repaired crankcases. 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 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 SE09281SC-D](https://openairdocs.org/stc/SE09281SC-D): Modify engine in accordance with RAM Aircraft Corporation Drawing Number 1891. RAM Aircraft Limited Partnership
- [STC SE3632SW-D](https://openairdocs.org/stc/SE3632SW-D): Installation of induction hose clamps. RAM Aircraft Limited Partnership
- [STC SE09653SC-D](https://openairdocs.org/stc/SE09653SC-D): Installation of RAM Induction Equalized Fuel Nozzle Set. 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 SE3632SW](https://openairdocs.org/stc/SE3632SW): Installation of induction hose clamps. RAM Aircraft Limited Partnership
- [STC SE3683SW](https://openairdocs.org/stc/SE3683SW): Installation of alternator clutch hub Teledyne part no. 640934 with Teledyne part no. 642056 alternator. This mod has been found to be compatible with STC SE4327SW and SE3714SW. RAM Aircraft Limited Partnership
- [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 SE09289SC](https://openairdocs.org/stc/SE09289SC): Installation of modified fuel injector nozzles. General Aviation Modifications, Inc. Lists TSIO-520 Series
- [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 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 SE00005DE](https://openairdocs.org/stc/SE00005DE): Installation of engine oil filter adapter compatable with SA4094NM Oilamatic, Inc. engine preoiling system. Oilamatic Inc
- [STC SE8594SW](https://openairdocs.org/stc/SE8594SW): Installation of roller rocker arm P/N PE 92I intake and PE92E exhaust. Performance Engineering
- [STC SE7430SW](https://openairdocs.org/stc/SE7430SW): 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 TSIO-520 Series
- [STC SE3630SW](https://openairdocs.org/stc/SE3630SW): Crankcase modifications. RAM Aircraft Limited Partnership
- [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 TSIO-520 Series
- [STC SE244NE](https://openairdocs.org/stc/SE244NE): Installation of Mattituck plasma flame sprayed cylinder barrels in Teledyne reciprocating engines. Mattituck Airbase, Inc. Lists TSIO-520 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 TSIO-520 Series

All 56: https://openairdocs.org/engine/continental-tsio-520-b/stcs.md

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