# Continental TSIO-520-N

- Type: Engine model (FAA registry)
- Registry code: 17264
- Manufacturer (registry): CONT MOTOR
- Model: TSIO-520-N
- Engine type: Reciprocating
- Power: 310 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-n

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 2023-02-12](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 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 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 95-21-15](https://openairdocs.org/ad/95-21-15): Aviation Gasoline · Continental Motors A-65-8, C85-12F, C85-12FJ and 77 more. Effective Nov 28, 1995
- [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 82-09-01](https://openairdocs.org/ad/82-09-01): Fuel Pressure Regulator Inlet and Outlet · Continental Motors TSIO-520-J, TSIO-520-K, TSIO-520-N and 1 more. Effective Jul 8, 1982
- [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 78-06-01](https://openairdocs.org/ad/78-06-01): Cylinder Intake Tube · Continental Motors TSIO-520-J and TSIO-520-N. Effective Jan 24, 1979
- [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 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 94-14-12](https://openairdocs.org/ad/94-14-12) (historical): Octane Aviation Gasoline · Teledyne Continental Motors A-65-8, C85-12, E185-11 and 68 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)

- [N2920G](https://openairdocs.org/aircraft/N2920G): [Stevenson Taylor A](https://openairdocs.org/faa-owner/STEVENSON%20TAYLOR%20A), [Dallas, TX](https://openairdocs.org/faa-place/TX/Dallas), built 1980, S/N 340A0115
- [N2XF](https://openairdocs.org/aircraft/N2XF): [N2xf LLC](https://openairdocs.org/faa-owner/N2XF%20LLC), [Windermere, FL](https://openairdocs.org/faa-place/FL/Windermere), built 2008, S/N 3RX029
- [N340CL](https://openairdocs.org/aircraft/N340CL): [Magafly LLC](https://openairdocs.org/faa-owner/MAGAFLY%20LLC), [Bay City, MI](https://openairdocs.org/faa-place/MI/Bay%20City), built 1976, S/N 340A-0105
- [N340GM](https://openairdocs.org/aircraft/N340GM): [Elbitamerica Inc](https://openairdocs.org/faa-owner/ELBITAMERICA%20INC), [Merrimack, NH](https://openairdocs.org/faa-place/NH/Merrimack), built 1976, S/N 340A0202
- [N34AW](https://openairdocs.org/aircraft/N34AW): [Valiair Lc Trustee](https://openairdocs.org/faa-owner/VALIAIR%20LC%20TRUSTEE), [Casper, WY](https://openairdocs.org/faa-place/WY/Casper), built 1976, S/N 340A0097
- [N414DV](https://openairdocs.org/aircraft/N414DV): [Snoopy'S Aviation LLC](https://openairdocs.org/faa-owner/SNOOPY'S%20AVIATION%20LLC), [Porterville, CA](https://openairdocs.org/faa-place/CA/Porterville), built 1976, S/N 414 0844
- [N414JC](https://openairdocs.org/aircraft/N414JC): [Ague Curtis](https://openairdocs.org/faa-owner/AGUE%20CURTIS), [Kailua, HI](https://openairdocs.org/faa-place/HI/Kailua), built 1973, S/N 414-0395
- [N414NW](https://openairdocs.org/aircraft/N414NW): [Assure Air LLC](https://openairdocs.org/faa-owner/ASSURE%20AIR%20LLC), [Sturgis, KY](https://openairdocs.org/faa-place/KY/Sturgis), built 1976, S/N 414-0829
- [N414TA](https://openairdocs.org/aircraft/N414TA): [Jerry L Stephens Investments LLC](https://openairdocs.org/faa-owner/JERRY%20L%20STEPHENS%20INVESTMENTS%20LLC), [Sunset, SC](https://openairdocs.org/faa-place/SC/Sunset), built 1980, S/N 414A0478
- [N636KK](https://openairdocs.org/aircraft/N636KK): [Knox Construction Inc](https://openairdocs.org/faa-owner/KNOX%20CONSTRUCTION%20INC), [Verdi, NV](https://openairdocs.org/faa-place/NV/Verdi), built 1977, S/N 340A0290
- [N76MJ](https://openairdocs.org/aircraft/N76MJ): [Jzw Aviation LLC](https://openairdocs.org/faa-owner/JZW%20AVIATION%20LLC), [North Salt Lake, UT](https://openairdocs.org/faa-place/UT/North%20Salt%20Lake), built 1981, S/N 421C1204

## NTSB investigations (3)

From the NTSB's public API. Aircraft are matched to registry aircraft by N-number and event date, checked against the reported serial number, make and model; the registry's history has gaps, so older matches can be wrong. Compare the reported make and model.

- [NTSB CEN19LA313](https://openairdocs.org/ntsb/CEN19LA313), Sep 3, 2019: Jackson Velocity (N2XF), Mack, CO, substantial damage. Probable cause: A propeller overspeed due to failure of the electronic ignition timing ring attachment screws, and a runway overrun during the subsequent forced landing.
- [NTSB GAA19CA001](https://openairdocs.org/ntsb/GAA19CA001), Oct 1, 2018: Cessna 340 (N89AM), Keokuk, IA, substantial damage. Probable cause: The pilot's failure to correctly identify the runway environment during an instrument approach at night in instrument meteorological conditions because he mistook building lights for runway lights,…
- [NTSB LAX84IA023](https://openairdocs.org/ntsb/LAX84IA023), Oct 20, 1983: Cessna 414 (N414JC), Van Nuys, CA, incident, no damage

## 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 20190903014649A](https://openairdocs.org/incident/20190903014649A), Sep 3, 2019: Jackson R D/Marini R J VELOCITY XL-RG (N2XF), Mack, CO, Substantial damage. PIC stated approx. 10 minutes into climb from gjt, passing approx. 15,000 MSL, the engine without provocation suddenly over sped to approx. 3450 RPM. PIC…
- [Accident 20181001016609A](https://openairdocs.org/incident/20181001016609A), Oct 1, 2018: Cessna 340 (N89AM), Keokuk, IA, Substantial damage. On October 1, 2018 around 0330 CDT, while conducting the RNAV 08 approach into Keokuk, IA (keok), a Cessna 340, N89AM, struck the ground about ¾ of a mile…
- [Incident 19890331019329I](https://openairdocs.org/incident/19890331019329I), Mar 31, 1989: Cessna 414A (N414JC), Long Beach, CA. Lost oil pressure. Engine shut down. Returned. Prop governor unfeathering oil. Supply line leaked. Cracked fitting.
- [Incident 19831020074429I](https://openairdocs.org/incident/19831020074429I), Oct 20, 1983: Cessna 414 (N414JC), Van Nuys, CA. Experienced an abrupt pitch up on climbout. Held by force for landing. Disconnect light inoperative. Trim horn weak

## Service difficulty reports (66, newest 50)

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

- [SDR KC2R2014FA0000436](https://openairdocs.org/sdr/KC2R2014FA0000436), Jul 7, 2014: IMPULSE COUPLING. CRACKED. DURING PERFORMANCE OF FIRST 500 HR INSPECTION OF MAGNETO, CRACKS WERE DISCOVERED IN IMPULSE COUPLING SHELL. CRACKS DETECTED BY NDT/MAGNETIC PARTICLE INSPECTION 
- [SDR KC2R2014FA0000437](https://openairdocs.org/sdr/KC2R2014FA0000437), Jul 7, 2014: IMPULSE COUPLING. CRACKED. DURING PERFORMANCE OF FIRST 500 HR INSPECTION OF MAGNETO, CRACKS WERE DISCOVERED IN IMULSE COUPLING SHELL. CRACKS DETECTED BY NDT/MAGNETIC PARTICLE INSPECTION O
- [SDR KC2R2014FA0000438](https://openairdocs.org/sdr/KC2R2014FA0000438), Jul 7, 2014: IMPULSE COUPLING. CRACKED. DURING PERFORMANCE OF FIRST 500 HR INSPECTION OF MAGNETO, CRACKS WERE DISCOVERED IN IMULSE COUPLING SHELL. CRACKS DETECTED BY NDT/MAGNETIC PARTICLE INSPECTION O
- [SDR KC2R2014FA0000439](https://openairdocs.org/sdr/KC2R2014FA0000439), Jul 7, 2014: IMPULSE COUPLING. CRACKED. DURING PERFORMANCE OF FIRST 500 HR INSPECTION OF MAGNETO, CRACKS WERE DISCOVERED IN IMULSE COUPLING SHELL. CRACKS DETECTED BY NDT/MAGNETIC PARTICLE INSPECTION O
- [SDR 2014FA0000240](https://openairdocs.org/sdr/2014FA0000240), Mar 28, 2014: ENGINE. MAKING METAL. ENGINE OVERHAULED ON MAY,08 2013, ENGINE FAILED ON FEB. 13, 2014 AT 6939.5 WITH LARGE AMOUNTS OF METAL CONTAMINATION, STEEL, FOUND IN ENGINE OIL FILTER. REMOVED
- [SDR 2013FA0000680](https://openairdocs.org/sdr/2013FA0000680), Nov 23, 2013: CYLINDER. CRACKED. CRACKED ENGINE CYLINDER.
- [SDR CA130826006](https://openairdocs.org/sdr/CA130826006), Aug 22, 2013: BELLCRANK. SHEARED. (CAN) AFTER FLIGHT, IT WAS NOTED THAT THE RT INBD MLG DOOR WAS HANGING OPEN. NO NOISE WAS HEARD IN FLIGHT DURING EXTENSION AND RETRACTION AND THE LANDING GEAR S
- [SDR CA120515001](https://openairdocs.org/sdr/CA120515001), May 15, 2012: BEARING. LOOSE. (CAN) MAG WAS RETURNED WITH A WC STATING MAG DEAD AND TEETH BROKEN. WHEN DISASSEMBLED, THE BEARING IN THE DISTRIBUTOR BLOCK WAS FOUND LOOSE. THIS CAUSED THE DIS
- [SDR 2012FA0000217](https://openairdocs.org/sdr/2012FA0000217), Mar 6, 2012: CYLINDER. CRACKED. IN CRUISE, AIRCRAFT EXPERIENCED VIBRATION. CHECKED COMPRESSION ON RT ENGINE, FOUND NR 3 CYLINDER HAD 0/80. REMOVED CYLINDER AND FOUND CRACKED FROM SPARK PLUG HO
- [SDR CA111026007](https://openairdocs.org/sdr/CA111026007), Oct 23, 2011: SKIN. CRACKED. (CAN) NUMEROURS SKIN CRACKS FOUND IN UPPER SKIN ON LT ELEVATOR AND LT HORIZONTAL STABILIZER.
- [SDR 2011FA0000081](https://openairdocs.org/sdr/2011FA0000081), Jan 6, 2011: PROBE. MISMANUFACTURED. NEW INSTALLATION OF EDM-960 DIGITAL ENG MONITOR AS PRIMARY REPLACEMENT OF ALL FACTORY INSTALLED ENGINE INSTRUMENTATION IAW STC SA01828SE. SECOND INSTANCE, TO HA
- [SDR CA080410009](https://openairdocs.org/sdr/CA080410009), Mar 12, 2008: CYLINDER HEAD. CRACKED. PILOT FLYING IN CRUISE FLIGHT, WHEN HE HEARD A POP AND EXPERIENCED LOSS OF ENGINE POWER. FEATHERED PROPELLER AND LANDED AT NEAREST AIRPORT. ENGINE CYLINDER REPL
- [SDR CA071004006](https://openairdocs.org/sdr/CA071004006), Oct 1, 2007: CABLE. BROKEN. (CAN) DURING THE ENGINE RUN-UP, THE RT ENGINE DID NOT RESPOND TO MIXTURE CONTROL. THE MIXTURE CONTROL CABLE WAS FOUND BROKEN UNDER THE ENGINE CONTROL PEDISTAL. 
- [SDR CA061123006](https://openairdocs.org/sdr/CA061123006), Nov 20, 2006: CAP. CRACKED. (CAN) CRACK NOTED AT LT NACELLE CANTED BULKHEAD CAP. CAP REPAIRED. (TC NR 20061123006)
- [SDR CA051014003](https://openairdocs.org/sdr/CA051014003), Oct 13, 2005: WASHER. MISSING. AFTER LANDING, THE A/C SUDDENLY VEERED OFF THE RUNWAY. THE RT MAIN LANDING GEAR SCISSORS CAME APART AT THE CENTER. THE WHEEL THEN TURNED AND PULLED THE AIRCRAFT
- [SDR AU510001704](https://openairdocs.org/sdr/AU510001704), Oct 1, 2005: ELBOW. WORN. RT ENGINE AIR INDUCTION HOSE FLEXIBLE ELBOW TORN ON INSIDE RADIUS.
- [SDR CA041222004](https://openairdocs.org/sdr/CA041222004), Dec 14, 2004: CRANKCASE. CRACKED. (CAN) THE NR 4 CYLINDER HAD LOW COMPRESSION AND WAS REMOVED FOR REPAIR. WHILE THE CYLINDER WAS REMOVED, A CRACK WAS FOUND AROUND THE 4 O'CLOCK POSITION CYLINDER
- [SDR CA041006005](https://openairdocs.org/sdr/CA041006005), Sep 22, 2004: LINE. CORRODED. (CAN) PILOT AND AME FLYING HOME TO BASE OBSERVED THE LT ENGINE OIL PRESSURE DECREASING AT A SLOW RATE, UNTIL DECISION MADE TO SHUT DOWN THE ENGINE AND LAND AT T
- [SDR CA040203009](https://openairdocs.org/sdr/CA040203009), Jan 16, 2004: FORK. CRACKED. (CAN) CRACK FOUND IN FORK CASTING ON LT SIDE OF TUBE BORE. DISASSEMBLY REVEALED FORK CRACKED COMPLETELY THROUGH LT SIDE OF BORE.
- [SDR CA030923002](https://openairdocs.org/sdr/CA030923002), Sep 18, 2003: HUB. MISOVERHAULED. (CAN) HUB UNIT BLADE SOCKET NR 2, EXPANSION PLUG HOLES DRILLED TOO DEEP BY THE PREVIOUS OVERHAUL. HUB UNIT REPLACED.
- [SDR CA030923003](https://openairdocs.org/sdr/CA030923003), Sep 18, 2003: BLADE. DAMAGED. (CAN) PROPELLER BLADES MEASURED WHEN RECEIVED IN SHOP. BLADES FOUND TO BE BELOW MIN. WIDTH AND THICKNESS. BLADES REPLACED.
- [SDR CA030923004](https://openairdocs.org/sdr/CA030923004), Sep 18, 2003: BLADE. DAMAGED. (CAN) BLADES MEASURED WHEN RECEIVED IN SHOP, FOUND BLADE WIDTH TO BE BELOW MIN. ALLOWABLE. BLADES REPLACED.
- [SDR WS92003F00000](https://openairdocs.org/sdr/WS92003F00000), Aug 15, 2003: CYLINDER HEAD. SEPARATED. AIRCRAFT DEPARTED, PILOT EXPERIENCES ROUGH RUNNING RIGHT ENGINE, AND LOSS OF POWER. PILOT LANDED, AND UPON INSPECTION BY COMPANY MECHANIC DISCOVERED NR 6 CYLIND
- [SDR AUS20030586](https://openairdocs.org/sdr/AUS20030586), Apr 8, 2003: SLIP JOINT. CRACKED. (AUS) RT ENGINE EXHAUST SYSTEM SLIP COUPLING CRACKED IN AREA NEAR TRANSITION DUCT.
- [SDR CA021120001](https://openairdocs.org/sdr/CA021120001), Nov 14, 2002: SCREEN. DESTROYED. (CAN) DURING OPERATION 1 INSPECT, NON FERROUS METAL FOUND IN LT OIL FILTER AND SCREEN. INSPECTED FILTER AGAIN IN 20 HOURS. IN LESS THAN 15 HOURS OIL WAS DRIPPIN
- [SDR 2002F00959](https://openairdocs.org/sdr/2002F00959), Oct 23, 2002: WASTEGATE VALVE. STUCK. UNABLE TO OBTAIN TAKEOFF POWER ON RIGHT ENGINE.
- [SDR CA020626013](https://openairdocs.org/sdr/CA020626013), Jun 18, 2002: BELLCRANK. CRACKED. (CAN) SMALL CRACK ON BOTH RADII OF CENTRE BLOCK ON BELLCRANK.
- [SDR CA020719009](https://openairdocs.org/sdr/CA020719009), Jun 12, 2002: MOUNT. DEFORMED. (CAN) ENGINE MOUNTS FOUND DEFORMED AND SOFT ALLOWING FOR EXCESSIVE MOVEMENT OF ENGINE ON MOUNTS.
- [SDR AUS20020519](https://openairdocs.org/sdr/AUS20020519), May 24, 2002: LINE. CHAFED. (AUS) LT ENGINE OIL PRESSURE INDICATOR LINE LOCATED IN THE STUB WING ADJACENT TO THE NACELLE WORN THROUGH IN SEVERAL PLACES BY CONTACT WITH THE LH ENGINE BLEED 
- [SDR 2002FA0000216](https://openairdocs.org/sdr/2002FA0000216), Feb 12, 2002: ACTUATOR. BROKEN. RT MLG DOWN LIGHT DID NOT SHOW DOWN AND LOCK. REMOVED RIGHT SWITCH (DOWNLOCK) 1SE1 SWITCH AND ACTUATOR SWITCH LEAF (JE1) FELL OUT. THE JE1 ACTUATOR WAS BROKEN A
- [SDR AUS20010643](https://openairdocs.org/sdr/AUS20010643), Jun 1, 2001: CONTROL CABLE. FRAYED. (AUS) YAW DAMPER CABLE FRAYED AND STRANDS BROKEN IN AREA WHERE THECABLE PASSES INTO THE TERMINAL FITTING AT THE RUDDER BELLCRANK.
- [SDR AU000670](https://openairdocs.org/sdr/AU000670), Sep 1, 2000: CYLINDER. CRACKED. (AUS) LEFT ENGINE NR 2 AND NR 3 CYLINDERS CRACKED BETWEEN FUEL INJECTOR AND SPARK PLUG. FUEL LEAKING EXTERNALLY. (X)
- [SDR AU000767](https://openairdocs.org/sdr/AU000767), Aug 30, 2000: BEARING. CORRODED. (AUS) LOWER RUDDER HINGE BEARING PLATE CORRODED. UPON REMOVAL, THE BEARING PLATE WAS FOUND TO HAVE BEEN INSTALLED UPSIDE DOWN. THE BEARING PLATE APPEARED TO BE 
- [SDR AU000561](https://openairdocs.org/sdr/AU000561), Jun 7, 2000: WIRE. BROKEN. (AUS) TRAILING EDGE FLAP POWER WIRE BROKEN IN AREA APPROXIMATELY 100 MM( 4 INCHES) FROM THE FLAP PRESELECT SWITCHES. WIRE IS ONE IN A BUNDLE OF FIVE WIRES WHICH
- [SDR AU990859](https://openairdocs.org/sdr/AU990859), Aug 24, 1999: SKIN. CRACKED. (AUS) LEFT AND RIGHT WING TOP SKINS CRACKED IN THE AREA ADJACENT TO THE WING LOCKERS.
- [SDR AU990827](https://openairdocs.org/sdr/AU990827), Aug 19, 1999: BEAM. CORRODED. (AUS) ENGINE BEAM CORRODED.
- [SDR AU990828](https://openairdocs.org/sdr/AU990828), Aug 19, 1999: BEAM. CORRODED. (AUS) ENGINE BEAM CORRODED.
- [SDR 20000808SH012](https://openairdocs.org/sdr/20000808SH012), Mar 29, 1999: PLATE. WORN. PILOT REPORTED FLUCTUATING MAP. TROUBLESHOOTING FOUND TOO MUCH AXIAL PLAY IN TURBOSHAFT. TIME ON TURBO 64.4 HRS.
- [SDR 99ZZZX1073](https://openairdocs.org/sdr/99ZZZX1073), Dec 21, 1998: TURBOCHARGER. MALFUNCTIONED. SUBJECT AIRCRAFT IS LOCATED IN AUSTRALIA. IT WAS REPORTED THAT THIS ENGINE WAS SURGING IN-FLIGHT. INVESTIGATION THERE FOUND A TURBOCHARGER WITH 'EXCESSIVE END F
- [SDR AU981649](https://openairdocs.org/sdr/AU981649), Dec 17, 1998: LINE. LEAKING. (AUS) DURING FLIGHT, ENGINE WAS SHUT DOWN DUE TO LOSS OF ENGINE OIL PRESSURE. INVESTIGATION FOUND AN OIL PIPE LEAKING AS RESULT OF PIT HOLE CORROSION - PIPE RUB
- [SDR 99ZZZX279](https://openairdocs.org/sdr/99ZZZX279), Dec 4, 1998: CYLINDER. CRACKED. DURING FLIGHT, A VIBRATION WAS NOTED. THE PLANE LANDED. THE RIGHT ENGINE SHOWED ZERO COMPRESSION ON NR 4 CYLINDER. AFTER REMOVING CYLINDER, FOUND CRACK FROM EXH
- [SDR 98ZZZX4479](https://openairdocs.org/sdr/98ZZZX4479), Nov 1, 1998: ALTERNATOR. FAILED. ALTERNATOR HAD IN-FLIGHT FAILURE RESULTING IN CLUTCH FAILURE. METAL FROM CLUTCH WENT INTO THE INTERNAL ENGINE AND CLOGGED OIL PUMP INLET SCREEN RESULTING IN ZER
- [SDR AU981307](https://openairdocs.org/sdr/AU981307), Sep 10, 1998: HOSE. SEPARATED. (AUS) ALTIMETER STATIC HOSE DISLODGED AND CRACKED. STATIC HOSE BETWEEN THE ALTIMETER AND AIRSPEED INDICATOR SEPARATED AT A UNION LOCATED BEHIND THE DIRECTIONAL 
- [SDR 98ZZZX2807](https://openairdocs.org/sdr/98ZZZX2807), Jul 23, 1998: CONNECT ROD. FAILED. THIS ENGINE WAS OVERHAULED 5-27-85. TIME SINCE OVERHAUL 578 HOURS. THE CONNECTING ROD FAILED AT THE CAP/BOLT AREA. POSSIBLE BOLT FAILURE. NO FURTHER INFORMATION
- [SDR AU981547](https://openairdocs.org/sdr/AU981547), Jul 10, 1998: SIDE BRACE. FAULTY. (AUS) RIGHT MAIN LANDING GEAR SIDE BRACE FAULTY. LANDING GEAR COMPONENTS STIFF IN OPERATION. MAIN LANDING GEAR COLLAPSED DURING LANDING.
- [SDR CA980610007](https://openairdocs.org/sdr/CA980610007), Jun 2, 1998: SEAT ARMS. CRACKED. (CAN) PILOTS AND COPILOTS SEAT ARMS INSPECTED AND FOUND CEACKED. HAD BEEN WELDED AND DID NOT HOLD. NEW ARMS INSTALLED. MSB 89-3.
- [SDR AU980310](https://openairdocs.org/sdr/AU980310), Mar 13, 1998: CONNECTOR. BURNT. (AUS) SPARE POST LIGHT CONNECTOR LOCATED BEHIND THE INSTRUMENT PANEL SHORT CIRCUITED AND BURNT.
- [SDR 98ZZZX883](https://openairdocs.org/sdr/98ZZZX883), Feb 6, 1998: CRANKCASE. BROKEN. CRANKCASE BROKE AT UPPER REAR BETWEEN MAGNETOS DOMINATING ON THE RT SIDE OF THE CRANKCASE PARTING SURFACE. NO CRANKCASE PARTS WERE MISSING, BUT IT APPEARS TO BE
- [SDR CA970903002](https://openairdocs.org/sdr/CA970903002), Apr 10, 1997: ENGINE. FAILED. (CAN) NR 2 ENGINE FAILED
- [SDR AU970168](https://openairdocs.org/sdr/AU970168), Feb 6, 1997: WINDOW. FAILED. (AUS) COPILOTS WINDOW FAILED - WINDOW BLEW OUT DURING FLIGHT

All 66: https://openairdocs.org/engine/continental-tsio-520-n/reports.md

## STCs that may be installed (OpenAirDocs) (63, 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 SE2831SW-D](https://openairdocs.org/stc/SE2831SW-D): Installation of Bendix S6RN-1251 and S6RN-1255 magnetos. RAM Aircraft Limited Partnership
- [STC SE3714SW-D](https://openairdocs.org/stc/SE3714SW-D): Install RAM economy camshaft and modified cylinders. 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 SE4159NM](https://openairdocs.org/stc/SE4159NM): Installation of American Aviation Inc., intercooler and associated systems. American Aviation Inc
- [STC SE5743NM](https://openairdocs.org/stc/SE5743NM): Intallation of adapter for externally mounted oil filter. Aviation Development Corporation
- [STC SE2831SW](https://openairdocs.org/stc/SE2831SW): Bendix S6RN-1251 and S6RN-1255 magnetos. RAM Aircraft Limited Partnership
- [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 SE3714SW](https://openairdocs.org/stc/SE3714SW): Install RAM economy camshaft and modified cylinders. 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 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 SE00223SE](https://openairdocs.org/stc/SE00223SE): Installation of Auto-Valve Inc oil drain valve. Rocket Engineering 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

All 63: https://openairdocs.org/engine/continental-tsio-520-n/stcs.md

---
OpenAirDocs.org is an independent research project of [Contrail Labs](https://contraillabs.com/). It is not affiliated with the FAA or the NTSB. Source documents are U.S. government works in the public domain.