# Continental TSIO-520-EB - Type: Engine model (FAA registry) - Registry code: 17256 - Manufacturer (registry): CONT MOTOR - Model: TSIO-520-EB - Engine type: Reciprocating - Power: 300 hp - Data sheet: [TCDS E8CE](https://openairdocs.org/tcds/E8CE) (OpenAirDocs) - Holder: Continental Aerospace Technologies, Inc. - Installed in: 6 registered aircraft - Page: https://openairdocs.org/engine/continental-tsio-520-eb 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 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 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 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) (11) - [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 - [SAIB NE-02-41](https://openairdocs.org/saib/NE-02-41): . Issued Aug 8, 2002 ## Registered aircraft (6) - [N116JW](https://openairdocs.org/aircraft/N116JW): [Acvtg Aviation LLC](https://openairdocs.org/faa-owner/ACVTG%20AVIATION%20LLC), [Wilmington, DE](https://openairdocs.org/faa-place/DE/Wilmington), built 1980, S/N 335-0030 - [N335KH](https://openairdocs.org/aircraft/N335KH): [Serafini Transportation LLC](https://openairdocs.org/faa-owner/SERAFINI%20TRANSPORTATION%20LLC), [Ringwood, NJ](https://openairdocs.org/faa-place/NJ/Ringwood), built 1979, S/N 335-0025 - [N335SM](https://openairdocs.org/aircraft/N335SM): [Mf Property Management LLC](https://openairdocs.org/faa-owner/MF%20PROPERTY%20MANAGEMENT%20LLC), [Hattiesburg, MS](https://openairdocs.org/faa-place/MS/Hattiesburg), built 1979, S/N 3350020 - [N4125G](https://openairdocs.org/aircraft/N4125G): [Seeding Operations And Atmospheric Research (Soar)](https://openairdocs.org/faa-owner/SEEDING%20OPERATIONS%20AND%20ATMOSPHERIC%20RESEARCH%20(SOAR)), [San Angelo, TX](https://openairdocs.org/faa-place/TX/San%20Angelo), built 1977, S/N 340A0297 - [N802MC](https://openairdocs.org/aircraft/N802MC): [Runaway Plane LLC](https://openairdocs.org/faa-owner/RUNAWAY%20PLANE%20LLC), [Oklahoma City, OK](https://openairdocs.org/faa-place/OK/Oklahoma%20City), built 1980, S/N 335-0044 - [N87443](https://openairdocs.org/aircraft/N87443): [Keystone Aerial Surveys Inc](https://openairdocs.org/faa-owner/KEYSTONE%20AERIAL%20SURVEYS%20INC), [Philadelphia, PA](https://openairdocs.org/faa-place/PA/Philadelphia), built 1976, S/N 310R0562 ## NTSB investigations None matched to aircraft with this engine model. ## FAA accident and incident reports (1) 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. - [Incident 20090125002849I](https://openairdocs.org/incident/20090125002849I), Jan 25, 2009: Cessna 335 (N918AA), Atlanta, GA, Minor damage. During approach to runway 31, selected gear down and observed 3 green down and locked gear indications. This was also confirmed by passenger. Accomplished… ## Service difficulty reports (83, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR 2022FA0000457](https://openairdocs.org/sdr/2022FA0000457), Jul 15, 2022: CYLINDER. LEAKING. OVERHAULED RH ENGINE WAS INSTALLED ON THE AIRCRAFT. AFTER TEST FLIGHT, AN OIL LEAK WAS NOTED FROM THE #6 CYLINDER BASE. THE CRS THAT OVERHAULED THE ENGINE INSTR - [SDR 2022FA0000455](https://openairdocs.org/sdr/2022FA0000455), Apr 27, 2022: CRANKSHAFT. BROKEN. DURING CLIMB AFTER TAKEOFF FROM KZPH, AROUND 5000 FT, THE RH ENGINE BEGAN RUNNING ROUGH, THE RH MAGNETO WAS TURNED OFF IN AN ATTEMPT TO DIAGNOSE THE ROUGHNESS. - [SDR CSSA2021042001](https://openairdocs.org/sdr/CSSA2021042001), Apr 20, 2021: DISTRIBUTOR BLK. CORRODED. RH MAGNETO ON RH ENGINE RAN ROUGH DURING PREFLIGHT RUNUP. ENGINE CLEARED UP AFTER LEANING MIXTURE FOR 2 MINUTES. TAXIED TO RUNWAY. DURING TAKEOFF RUN THE ENGINE - [SDR XGNA2021041400011](https://openairdocs.org/sdr/XGNA2021041400011), Apr 14, 2021: ENGINE. POWER LOSS. TAKEOFF WAS NORMAL 34.5” MP, 2700 RPM, FUEL FLOW IN THE WHITE ARC. DURING CLIMB POWER SETTINGS RIGHT ENGINE WOULD NOT MAINTAIN MAP SETTING. RETURNED TO EDC, LAN - [SDR YHAA2019F00135](https://openairdocs.org/sdr/YHAA2019F00135), Mar 2, 2019: SIGNAL COND UNIT. DEFECTIVE. APPEARS THAT RT FUEL QTY INDICATING SYSTEM MALFUNCTIONED AND WAS INDICATING 12 GALLONS OF FUEL IN TANK AND IT WAS ACTUALLY EMPTY.THE SIGNAL CONDITIONER WAS SWAP - [SDR 2017FA0000541](https://openairdocs.org/sdr/2017FA0000541), Oct 24, 2017: TURBOCHARGER. LEAKING. DURING DESCENT INTO KANE AIRPORT PILOT COULD SEE OIL STREAKING BACK FROM TOP COWL LOUVERS. AFTER A FEW MINUTES HE ALSO NOTICED OIL PRESSURE DROPPING. PILOT PREC - [SDR 2017FA0000550](https://openairdocs.org/sdr/2017FA0000550), Aug 3, 2017: MOTOR. MALFUNCTIONED. PILOT ATTEMPTED TO RETRACT GEAR, GEAR MOTOR CIRCUIT BREAKER TRIPPED. PILOT WAS ABLE TO SELECT GEAR DOWN AND PUSHED CIRCUIT BREAKER, GEAR EXTENDED AN LOCKED BEFO - [SDR CA140328005](https://openairdocs.org/sdr/CA140328005), Mar 28, 2014: PUMP. LEAKING. (CAN) DURNING AN INSPECTION, FUEL WAS SEEN UNDER THE RT WING LANDING LIGHT. THE WING TIP TANK END COVER WAS REMOVED AND THE FUEL WAS SEEN COMING OUT OF THE TIP - [SDR 2014FA0000031](https://openairdocs.org/sdr/2014FA0000031), Dec 13, 2013: CYLINDER. CRACKED. BOTH ENGINES OVERHAULED WITH NEW CYLINDERS. AFTER 784 HR AND 7 YEARS, 5 CYLINDERS WERE FOUND CRACKED AT THE INTAKE PORT AREA. FUEL STAINING WAS OBSERVED RUNNING - [SDR CA131209002](https://openairdocs.org/sdr/CA131209002), Nov 29, 2013: CAPACITOR. BURNED. (CAN) PILOTS REPORTED BURNING ODOR IN THE COCKPIT AND THE LOSS OF 1 RADIO. THE ACFT LANDED WITHOUT INCIDENT OR IMPACT ON OPERATIONS. MAINTENANCE DISCOVERED THE - [SDR CA130523002](https://openairdocs.org/sdr/CA130523002), May 21, 2013: SPROCKET. BROKEN. (CAN) DURING THE ACFT RUNUP, THE PILOT SELECTED FLAPS DOWN. AT 30 DEGREE OF FLAP DOWN POSITION, A NOISE WAS HEARD AND THE FLAPS STOPPED. THE ACFT TAXIED BACK TO - [SDR QTV2011F00000](https://openairdocs.org/sdr/QTV2011F00000), Jan 13, 2011: GASKET. DISPLACED. ON A MX CK FLIGHT, AFTER CHANGING THE NR1 AND THE NR5 CYLINDERS, THE PILOT SAW SMOKE FROM THE LT ENG NACELLE. HE SECURED THE ENG AND RETURNED TO THE HANGAR. UPO - [SDR CA100824003](https://openairdocs.org/sdr/CA100824003), Aug 20, 2010: CHAIN. BROKEN. WHILE ON SHORT FINAL, AFTER FULL FLAPS HAD BEED SELECTED A LARGE BANG WAS HEARD. AIRPLANE ROLLED HARD TO THE RT. THE ALTITUDE WAS AT 200 FT. INPUT OPPOSITE AILE - [SDR TVD2010F00000](https://openairdocs.org/sdr/TVD2010F00000), Mar 26, 2010: SPARK PLUG. WEAK. ON THE 2ND LEG OF A FLIGHT, THE PILOT EXPERIENCED AN OCCASIONAL MISFIRE THAT BECAME MORE REGULAR ADJUSTING MIXTURES AND CHECKING MAGNETOS. FAILE TO ISOLATE PROB - [SDR CA090710007](https://openairdocs.org/sdr/CA090710007), Jul 9, 2009: SCREW. BROKEN. (CAN) RT MLG COLLAPSED DURING TURN TO LINE UP FOR TAKEOFF. PARTS FOUND FAILED AFTER COLLAPSE. ADJUSTING SCREW PN 0841113-3 FOUND SHEARED. BOLT ATTACHING BELLCRA - [SDR CA090807004](https://openairdocs.org/sdr/CA090807004), Jul 8, 2009: SUPPORT BRACKET. BROKEN. RT TURBO SUPPORT BRACKET FOUND BROKEN DURING INSP. - [SDR CA090520003](https://openairdocs.org/sdr/CA090520003), May 20, 2009: CRANKCASE. CRACKED. (CAN) AN OIL LEAK WAS NOTED ON THE LT ENGINE. A CRACK WAS FOUND IN THE RT CRANKCASE HALF. THE CRACK WAS LOCATED AFT OF THE ALTERNATOR, FWD OF THE NR 5 CYL, 7TH - [SDR 2008FA0000919](https://openairdocs.org/sdr/2008FA0000919), Dec 10, 2008: SPAR. CRACKED. DURING ROUTINE INSP, CRACKS WERE OBSERVED IN THE LT AUXILARY SPAR. THE MAIN GEAR IS ATTACHED AT THE OTBD END. THE CRACKS WERE AT THE 11, 2, 5 AND 7 O`CLOCK POSI - [SDR 2008FA0000921](https://openairdocs.org/sdr/2008FA0000921), Dec 10, 2008: SPAR. CRACKED. DURING ROUTINE INSP, CRACKS WERE OBSERVED IN THE LT AUXILARY SPAR. THE MAIN GEAR IS ATTACHED AT THE OTBD END. THE CRACKS WERE AT THE 11, 2, 5 AND 7 O`CLOCK POSI - [SDR ODR2008F00000](https://openairdocs.org/sdr/ODR2008F00000), Apr 24, 2008: SEAL. LEAKING. DURING A PART 91 FLIGHT, THE RIGHT ENGINE BEGAN LEAKING OIL. WITHIN 15 MINUTES THE OIL LEAK GOT PROGRESSIVELY WORSE. SMALL PUFFS OF SMOKE CAME OUT OF THE TOP OF - [SDR CA080328007](https://openairdocs.org/sdr/CA080328007), Mar 27, 2008: ARM. BROKEN. DURING PILOT WALKAROUND THE RT MAIN GEAR DOOR WAS HANGING SLIGHTLY DOWN FROM RETRACTED POSITION. MAINTENANCE TO REPLACE PART. (TC NR 20080328007) - [SDR 2007FA0001019](https://openairdocs.org/sdr/2007FA0001019), Nov 13, 2007: CYLINDER HEAD. CRACKED. CRACKED CYL HEAD BEHIND INJECTOR BETWEEN FIN NR 12, NR 3. DEFECTIVE MFG PROCESS. (K) - [SDR 2007FA0001020](https://openairdocs.org/sdr/2007FA0001020), Nov 13, 2007: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEAD BEHIND INJECTOR BETWEEN FIN NR 1, NR 3. DEFECTIVE MFG PROCESS. (K) - [SDR 2007FA0001021](https://openairdocs.org/sdr/2007FA0001021), Nov 13, 2007: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEAD BEHIND INJECTOR BETWEEN FIN NR 1, NR 3. DEFECTIVE MFG PROCESS. (K) - [SDR 2007FA0001022](https://openairdocs.org/sdr/2007FA0001022), Nov 13, 2007: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEAD BEHIND INJECTOR BETWEEN FIN NR 1, NR 3. DEFECTIVE MFG PROCESS. (K) - [SDR 2007FA0001023](https://openairdocs.org/sdr/2007FA0001023), Nov 13, 2007: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEAD BEHIND INJECTOR BETWEEN FIN NR 1, NR 3. DEFECTIVE MFG PROCESS. (K) - [SDR 2007FA0001029](https://openairdocs.org/sdr/2007FA0001029), Nov 13, 2007: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEAD BEHIND INJECTOR BETWEEN FIN NR 1, NR 3. DEFECTIVE MFG PROCESS. (K) - [SDR 2007FA0001024](https://openairdocs.org/sdr/2007FA0001024), Nov 8, 2007: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEAD BEHIND INJECTOR BETWEEN FIN NR1, NR3. DEFECT IN MFG PROCESS. (K) - [SDR 2007FA0001025](https://openairdocs.org/sdr/2007FA0001025), Nov 8, 2007: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEAD BEHIND INJECTOR BETWEEN FIN NR 1, NR 3. DEFECT IN MFG PROCESS. (K) - [SDR 2007FA0001026](https://openairdocs.org/sdr/2007FA0001026), Nov 8, 2007: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEAD BEHIND INJECTOR BETWEEN FIN NR 1, NR 3. DEFECT IN MFG PROCESS. (K) - [SDR 2007FA0001027](https://openairdocs.org/sdr/2007FA0001027), Nov 8, 2007: CYLINDER HEAD. CRACKED. CRACKED CYL HEAD BEHIND INJECTOR BETWEEN FIN NR 1, NR 3. (K) - [SDR 2007FA0001028](https://openairdocs.org/sdr/2007FA0001028), Nov 7, 2007: CYLINDER HEAD. CRACKED. CRACKED CYLINDER HEAD BEHIND INJECTOR BETWEEN FIN NR1, NR3. DEFECT IN MFG PROCESS. (K) - [SDR N3B2007F00002](https://openairdocs.org/sdr/N3B2007F00002), Sep 10, 2007: BELLCRANK. BROKEN. LT MAIN LANDING COLLAPSED ON LANDING. IT APPEARS THAT BELLCRANK ASSEMBLY, PN 50410015 FAILED DURING EXTENSION CYCLE. (K) - [SDR ODR2007F00000](https://openairdocs.org/sdr/ODR2007F00000), May 22, 2007: SKIN. CRACKED. 7-8 INCH CRACK IN SKIN OF WING LOCATED BETWEEN LT NACELLE AND FUSELAGE; AFT OF LEADING EDGE; ON TOP OF WING. APPARENT CAUSE IS FATIGUE DUE TO PREVIOUS OWNER WAL - [SDR N3B2007F00000](https://openairdocs.org/sdr/N3B2007F00000), Feb 15, 2007: ENGINE. SHUTDOWN. DURING LANDING (AT DESCISION HEIGHT) LT ENGINE SHUTDOWN CAUSING AIRCRAFT TO LAND WITH A YAW TO THE LT, PUTTING EXCESSIVE LOAD ON RT LANDING GEAR. AFTER LANDING, - [SDR CA070125002](https://openairdocs.org/sdr/CA070125002), Jan 24, 2007: SCREW. BROKEN. (CAN) UPON LANDING RT MLG INADVETENTLY RETRACTED. AIRCRAFT VEERED OFF RUNWAY. AIRCRAFT INSPECTED AND CAUSE DEEMED FAILURE OF RT MLG ADJUSTING SCREW CAUSING SIDE - [SDR OEZ2007F00000](https://openairdocs.org/sdr/OEZ2007F00000), Dec 10, 2006: FORK. BROKEN. UPON LANDING AT AIRPORT, NOSE LANDING GEAR ILLUMINATION LIGHTS DID NOT SHOW THAT THE NOSE GEAR WAS IN THE DOWN AND LOCKED POSITION. MAIN LANDING GEAR INDICATED - [SDR CA060510011](https://openairdocs.org/sdr/CA060510011), May 2, 2006: TRUNNION. CRACKED. THE RT MAIN LANDING GEAR OLEO WENT FLAT AFTER LANDING. A CRACK WAS NOTICED ON THE UPPER TRUNNION, JUST UNDER THE SIDE BRACE ATTACH FITTING. THE UPPER TRUNNION W - [SDR 2006F00014](https://openairdocs.org/sdr/2006F00014), Jan 18, 2006: SENSOR. FALSE INDICATION. OIL TEMP INDICATOR INDICATED FULL HOT READING ON INITIAL CLIMB. A/C RETURNED TO AIRPORT. OIL TEMP SENSOR WAS REPLACED AND AIRCRAFT WAS RETURNED TO SERVICE WITH - [SDR TZR2005F00028](https://openairdocs.org/sdr/TZR2005F00028), Jul 12, 2005: CYLINDER. CRACKED. RT ENGINE NR 5 CYLINDER. LOW COMPRESSION. (K) - [SDR TZR2005F00029](https://openairdocs.org/sdr/TZR2005F00029), Jul 12, 2005: CYLINDER. CRACKED. CRACKED BETWEEN SPARK PLUG BOSS AND EXHAUST CYLINDER. TYPICAL OF THE CYLINDERS. (K) - [SDR CA050722006](https://openairdocs.org/sdr/CA050722006), May 27, 2005: RUDDER PEDAL. CRACKED. PILOT REPORTED THAT RT PARK BRAKE DOES NOT HOLD WHEN SET. UPON MAINTENANCE INSPECTION IT WAS DISCOVERED THAT CAPTAINS OB RUDDER PEDAL INTERCOSTAL MOUNT AT STATI - [SDR TZR2005F00018](https://openairdocs.org/sdr/TZR2005F00018), Apr 5, 2005: CYLINDER. CRACKED. CRACKED FROM INJECTOR TOWARD SPARK PLUG, ECI CYLINDER. (SW05200507951) (K) - [SDR TZR2005F00027](https://openairdocs.org/sdr/TZR2005F00027), Mar 4, 2005: TORQUE LINK. CRACKED. THE LT AND RT MLG HAD CRACKS ON THE BOSS AREA WHERE THE TORQUE LINKS ATTACH. THE CRACKS WERE ABOUT .2500 INCH LONG AND LOCATED NEXT TO WHERE THE BOSS CONNECTS T - [SDR CA041025001](https://openairdocs.org/sdr/CA041025001), Oct 20, 2004: BELLCRANK. UNSERVICEABLE. (CAN) LANDING GEAR IDLER BELCRANK PN 0541106-6 ON NR 2 MAIN LANDING GEAR, GEAR DOOR CONTROL LOBE FOUND SEVERED RESULTING IN GEAR DOOR HANGING DOWN. UPON INSPECT - [SDR CA040621011](https://openairdocs.org/sdr/CA040621011), Jun 17, 2004: ACTUATOR. WORN. ON APPROACH, THE FLAPS WERE LOWERED TO 45 DEG BUT ONLY WENT TO 30 DEG. THE AIRCRAFT LANDED SAFELY. THE FLAP ACTUATOR INTERNAL GEARS WERE FOUND STRIPPED. THE ACT - [SDR CA040616011](https://openairdocs.org/sdr/CA040616011), May 19, 2004: DOOR. SEPARATED. AFTER TAKEOFF A GROWING WHISTLING SOUND DEVELOPED IN INTENSITY OVER PILOTS LEFT SHOULDER. THERE WAS A LOUD POP OF A NOISE AND THE PILOT SAW THE STARBOARD EMERGE - [SDR TZR2004F00005](https://openairdocs.org/sdr/TZR2004F00005), Mar 10, 2004: TURBOCHARGER. FAILED. PILOT REPORTED LOSS OF TURBO BOOST AND OIL PRESSURE, SHUT DOWN ENGINE AND FEATHERED PROPELLER IN FLIGHT. LANDED AIRCRAFT WITHOUT FURTHER INCIDENT. DURING POST F - [SDR CA030826003](https://openairdocs.org/sdr/CA030826003), Aug 8, 2003: PLATE. CRACKED. (CAN) DURING A NR 3 INSPECTION, A FUEL STAIN WAS NOTICED AROUND THE RT NAVIGATION LIGHTCOVER. THE COVER WAS REMOVED AND A CRACK WAS FOUND ON THE FORWARD FUEL TA - [SDR 2003FA0000507](https://openairdocs.org/sdr/2003FA0000507), May 8, 2003: DRIVE GEAR. INOPERATIVE. REPORTED ALTERNATOR INOPERATIVE. UPON REMOVAL OF ALTERNATOR FOUND ALTERNATOR DRIVE GEAR TO BE DESTROYED. REMOVED AND INSPECTED OIL FILTER. FOUND SIGNIFICANT AMO All 83: https://openairdocs.org/engine/continental-tsio-520-eb/reports.md ## STCs that may be installed (OpenAirDocs) (52, 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 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 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 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 SE09282SC-D](https://openairdocs.org/stc/SE09282SC-D): Modify engine in accordance with RAM Aircraft Corporation Drawing Number 1892. 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 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 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 SE6074NM](https://openairdocs.org/stc/SE6074NM): Installation and usage of Castrol AD 65 SAE grade oil conforming to AN 161, AN 162, AN 163, and AN 164 per MIL-L-2281 qualification. Castrol North America - [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 - [STC SE44GL](https://openairdocs.org/stc/SE44GL): Incorporation of a fuel flow transducer. Shadin Company Inc - [STC SE44WE](https://openairdocs.org/stc/SE44WE): Use of Kling Aviation Oil, Specifications KL-100, KL-200 and KL-300 in Continental and Lycoming engines. Kling Oil Company. Lists TSIO-520 Series - [STC SE09653SC](https://openairdocs.org/stc/SE09653SC) (historical): Installation of RAM Induction Equalized Fuel Nozzle Set. RAM Aircraft Limited Partnership - [STC SE09280SC](https://openairdocs.org/stc/SE09280SC) (historical): Modify engine in accordance with RAM Aircraft Corporation Drawing No. 1888. RAM Aircraft Limited Partnership All 52: https://openairdocs.org/engine/continental-tsio-520-eb/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.