# Continental GTSIO-520-H - Type: Engine model (FAA registry) - Registry code: 17048 - Manufacturer (registry): CONT MOTOR - Model: GTSIO-520-H - Engine type: Reciprocating - Power: 375 hp - Data sheet: [TCDS E7CE](https://openairdocs.org/tcds/E7CE) (OpenAirDocs) - Holder: Continental Aerospace Technologies, Inc. - Installed in: 9 registered aircraft - Page: https://openairdocs.org/engine/continental-gtsio-520-h Model codes come from the FAA registry's reference file. ## ADs that may apply (OpenAirDocs) Matched to this engine model by model name and maker. Each AD's applicability may narrow it by serial number, part number or equipment. - [AD 2023-05-16](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 2020-16-11](https://openairdocs.org/ad/2020-16-11): SUMMARY: Reciprocating Cylinder Section · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 23 more. Effective Sep 21, 2020 - [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 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 2011-13-03](https://openairdocs.org/ad/2011-13-03): Turbocharger Turbine · Lycoming Engines LTO-360-E1A6D, O-540-L3C5D, TIGO-541-E1A and 20 more. Effective Jul 13, 2011 - [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 2007-05-15](https://openairdocs.org/ad/2007-05-15): Starter adapter assembly · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 6 more. Effective Apr 16, 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 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 98-17-11](https://openairdocs.org/ad/98-17-11): Crankshafts · Continental Motors A-65-3, A-65-8, A75-8 and 90 more. Effective Oct 19, 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 93-10-02](https://openairdocs.org/ad/93-10-02): Missing Cylinder Valve Retainer Key · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 180 more. Effective Aug 12, 1993 - [AD 91-19-03](https://openairdocs.org/ad/91-19-03): Oil Filter · Continental Motors 6-285-A, 6-285-B, 6-285-BA and 169 more. Effective Sep 29, 1991 - [AD 88-03-06](https://openairdocs.org/ad/88-03-06): Oil Filter · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 155 more. Effective Apr 15, 1988 - [AD 86-13-04 R3](https://openairdocs.org/ad/86-13-04-R3): Cylinder Assemblies · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 44 more. Effective Feb 24, 1988 - [AD 81-24-06](https://openairdocs.org/ad/81-24-06): Engine Driven Fuel Pumps · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 51 more. Effective Nov 23, 1981 - [AD 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 80-09-11](https://openairdocs.org/ad/80-09-11): Starter Torsional Damper/Starter Gear Shaft · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 6 more - [AD 77-13-22](https://openairdocs.org/ad/77-13-22): Crankcase Cracks · Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-F and 22 more Historical (superseded or no longer in force): - [AD 2023-04-08](https://openairdocs.org/ad/2023-04-08) (historical): Reciprocating Engine Power Section · Continental Aerospace Technologies GTSIO-520-C, GTSIO-520-D, GTSIO-520-H and 141 more. Effective Feb 23, 2023 - [AD 2009-24-52](https://openairdocs.org/ad/2009-24-52) (historical): Hydraulic lifters · Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 192 more - [AD 2009-24-51](https://openairdocs.org/ad/2009-24-51) (historical): Hydraulic lifters · Teledyne Continental Motors FSO-470-A, GIO-470-A, GTSIO-520-C and 156 more - [AD 2005-20-04](https://openairdocs.org/ad/2005-20-04) (historical): Starter adapter assembly · Teledyne Continental Motors GTSIO-520-C, GTSIO-520-D, GTSIO-520-E and 6 more. Effective Nov 1, 2005 - [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 ## Information bulletins (advisory) (6) - [SAIB NE-18-16](https://openairdocs.org/saib/NE-18-16): POWERPLANT Alternator Drive Coupling. Issued Jun 20, 2018 - [SAIB NE-16-13](https://openairdocs.org/saib/NE-16-13): Powerplant - Prohibited use of sealant. Issued Mar 8, 2016 - [SAIB NE-13-15](https://openairdocs.org/saib/NE-13-15): Engine Controls: Continental Motors, Inc. (CMI) Throttle and Mixture Control Levers. Issued Feb 8, 2013 - [SAIB NE-13-04](https://openairdocs.org/saib/NE-13-04): Continental Motors, Inc. (CMI) Connecting Rod Piston Pin Bushing Inspection. Issued Oct 31, 2012 - [SAIB NE-10-09](https://openairdocs.org/saib/NE-10-09): Reciprocating Engine Power Section: Hydraulic Valve Lifters. Issued Nov 20, 2009 - [SAIB NE-09-08](https://openairdocs.org/saib/NE-09-08): Reciprocating Engine Cylinder Section. Issued Jan 30, 2009 ## Registered aircraft (9) - [N155J](https://openairdocs.org/aircraft/N155J): [Qualitair LLC Trustee](https://openairdocs.org/faa-owner/QUALITAIR%20LLC%20TRUSTEE), Michelstadt, built 1972, S/N 421B-0246 - [N16AS](https://openairdocs.org/aircraft/N16AS): [Stefenelli Aviation N Tr Inc Trustee](https://openairdocs.org/faa-owner/STEFENELLI%20AVIATION%20N%20TR%20INC%20TRUSTEE), Attersee, built 1973, S/N 421B0317 - [N41114](https://openairdocs.org/aircraft/N41114): [Iacobacci Timothy R](https://openairdocs.org/faa-owner/IACOBACCI%20TIMOTHY%20R), [Fairborn, OH](https://openairdocs.org/faa-place/OH/Fairborn), built 1973, S/N 421B0458 - [N421BX](https://openairdocs.org/aircraft/N421BX): [Crystal Air LLC](https://openairdocs.org/faa-owner/CRYSTAL%20AIR%20LLC), [Brighton, MA](https://openairdocs.org/faa-place/MA/Brighton), S/N 421B0391 - [N421FA](https://openairdocs.org/aircraft/N421FA): [All In Aviation LLC](https://openairdocs.org/faa-owner/ALL%20IN%20AVIATION%20LLC), [Longview, TX](https://openairdocs.org/faa-place/TX/Longview), built 1973, S/N 421B0431 - [N42776](https://openairdocs.org/aircraft/N42776): [Hap'S Air Inc](https://openairdocs.org/faa-owner/HAP'S%20AIR%20INC), [Ames, IA](https://openairdocs.org/faa-place/IA/Ames), built 1973, S/N 421B0394 - [N458VC](https://openairdocs.org/aircraft/N458VC): [Wing And A Prayer LLC](https://openairdocs.org/faa-owner/WING%20AND%20A%20PRAYER%20LLC), [Sarasota, FL](https://openairdocs.org/faa-place/FL/Sarasota), built 1974, S/N 421B0915 - [N612CG](https://openairdocs.org/aircraft/N612CG): [Casa Grande Homes Inc](https://openairdocs.org/faa-owner/CASA%20GRANDE%20HOMES%20INC), [Blanchard, OK](https://openairdocs.org/faa-place/OK/Blanchard), built 1973, S/N 421B0416 - [N624PK](https://openairdocs.org/aircraft/N624PK): [Bas Part Sales LLC](https://openairdocs.org/faa-owner/BAS%20PART%20SALES%20LLC), [Greeley, CO](https://openairdocs.org/faa-place/CO/Greeley), built 1971, S/N 421B0144 ## NTSB investigations (4) 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 ERA26LA360](https://openairdocs.org/ntsb/ERA26LA360), Sep 25, 2026: Cessna 421B (N421FA), Nashville, TN, substantial damage, investigation ongoing - [NTSB CHI79FET17](https://openairdocs.org/ntsb/CHI79FET17), Feb 15, 1979: Cessna 421B (N41114), Fort Wayne, IN, substantial damage - [NTSB CHI77FEX45](https://openairdocs.org/ntsb/CHI77FEX45), Aug 28, 1977: Cessna 421B (N41114), Sheridan, IN, substantial damage - [NTSB MIA74DLA20](https://openairdocs.org/ntsb/MIA74DLA20), Oct 9, 1973: Cessna 421B (N1538T), Tallahassee, FL, substantial damage ## FAA accident and incident reports (7) 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 20110912021419I](https://openairdocs.org/incident/20110912021419I), Sep 12, 2011: Cessna 421B (N41114), Ames, IA, Minor damage. The pilot stated that, before landing, he verified that there were three green landing gear indicator lights. After touchdown, he heard a "chuk chunk" noise,… - [Incident 20110424007489I](https://openairdocs.org/incident/20110424007489I), Apr 24, 2011: Cessna 421B (N421FA), Perry, FL, Minor damage. On Sunday, 24 April, 2011, N421FA, a Cessna 421, experienced a gear collapse of the right MLG upon rollout from a landing on runway 6 at Perry-Foley Airport… - [Incident 20040617020389I](https://openairdocs.org/incident/20040617020389I), Jun 17, 2004: Cessna 172R (N500ER), Cincinnati, OH, Minor damage. (-23) Aircraft taxied into building when engine was started. Parking brake was not set and pilot said he pushed on brake pedals but aircraft did not stop. - [Incident 20010127000659I](https://openairdocs.org/incident/20010127000659I), Jan 27, 2001: Cessna 421B (N990MW), Harbor Springs, MI, Minor damage. (-23) When landing in a cross wind, left wheel caught in snow, pulled a/c to the left side and went off the runway damaging landing gear and propellers. - [Accident 19790215008889A](https://openairdocs.org/incident/19790215008889A), Feb 15, 1979: Cessna 421B (N41114), Fort Wayne, IN, Substantial damage. Airplane landed off side of runway in deep snow. Windshield ice covered. Deice tank empty. - [Accident 19770828031709A](https://openairdocs.org/incident/19770828031709A), Aug 28, 1977: Cessna 421B (N41114), Sheridan, IN, Substantial damage - [Accident 19731009035249A](https://openairdocs.org/incident/19731009035249A), Oct 9, 1973: Cessna 421B (N1538T), Tallahassee, FL, Substantial damage. Post acdt insp did not reveal evidence of malfunction. Acft entrd sandy area l of rwy. ## Service difficulty reports (102, newest 50) As reported by operators and repair stations, by the model named in the report. - [SDR 2022FA0000351](https://openairdocs.org/sdr/2022FA0000351), Jul 14, 2022: MAGNETO. DEFECTIVE. LOSS OF 5 INCHES OF MP AT FL 240 AND INFLIGHT INVESTIGATION SHOWED A ROUGH RUNNING RH MAGNETO. DISCOVERY OF A DEFECTIVE SPARK PLUG LEAD (SEE OTHER SDR) ON A 25 - [SDR 2022FA0000319](https://openairdocs.org/sdr/2022FA0000319), Jun 24, 2022: NONE. FAILED. CRUISE FLIGHT FL 240, 25 HRS SINCE NEW CHAMPION IGNITION HARNESS, BLUE LABEL TCM/CAT BENDIX S6LN-1205 MAGNETO, AND CHAMPION RHB32E SPARK PLUGS AT ENGINE OVERHAU - [SDR CA180925012](https://openairdocs.org/sdr/CA180925012), Sep 22, 2018: SUPPORT. LOOSE. (CAN) AIRCRAFT SUFFERED AN UNCOMMANDED RIGHT ENGINE SHUT DOWN APPROXIMATELY 10 MINUTES INTO THE FLIGHT, PILOT EXECUTED AND ENGINE OUT SHUT DOWN AND FEATHERED TH - [SDR 2017FA0000635](https://openairdocs.org/sdr/2017FA0000635), Nov 15, 2017: MAGNETO. FAULTY. HAD ONE ROUGH MAG CHECK AND 2 GOOD MAG CHECKS PRIOR TO FLIGHT. REDUCED POWER IN CLIMB AND MAG CHECK REVEALED NO SPARK ON LT MAGNETO. RETURNED TO AIRPORT. REMOVE - [SDR YN8R201606300001](https://openairdocs.org/sdr/YN8R201606300001), Jun 30, 2016: PISTON. CRACKED. WHEN OIL FILTER WAS SECTIONED FOR CHECK FOR CONTAMINATION, LARGE CHIPS OF ALUMINUM WERE NOTED. SENT OIL FILTER TO AVIATION OIL ANALYSIS LABS AND CONTACTED ENGIN - [SDR CA120417008](https://openairdocs.org/sdr/CA120417008), Apr 17, 2012: ACTUATOR. MALFUNCTIONED. (CAN) DURING ASSY OF THE RUDDER TRIM ACTUATOR IT WAS NOTED THAT THE AFT BEARING SURFACE ON THE EXTERNAL SCREW, PN: 5815023-7 FROM THE REPAIR KIT, PN: 5115275-20 - [SDR 2011FA0000805](https://openairdocs.org/sdr/2011FA0000805), Nov 15, 2011: CYLINDER. FRACTURED. 6 NEW CYLINDERS WERE INSTALLED AUG 10, 2008 AT 2812 TOTAL TIME. THE CYLINDERS EXPERIENCED A FAILURE OF THE VALVE GUIDES ON 3 OF THE 6 AT 384 HOURS TIME IN SERVI - [SDR YWYR201209158826](https://openairdocs.org/sdr/YWYR201209158826), Nov 8, 2011: SPARK PLUG. CRACKED. PILOT REPORTED HIGH RPM DROP DURING MAGNETO DROP OFF CHECK. ISOLATED PROBLEM TO NR 5 CYLINDER BY USE OF GRAPHIC ENGINE MONITOR. REMOVED ALL SPARK PLUGS AND FOUN - [SDR 2011FA0000582](https://openairdocs.org/sdr/2011FA0000582), Aug 12, 2011: GEAR. SHEARED. PILOT REPORTED IN FLIGHT LOSS OF ALTERNATOR. ACFT LANDED W/O INCIDENT. INVESTIGATION REVEALED ALTERNATOR DRIVE CLUTCH GEAR. MISSING DAMPNER MATERIAL AND ALTERNA - [SDR Z8G2011F00000](https://openairdocs.org/sdr/Z8G2011F00000), Jul 28, 2011: THRUST BEARING. MISMANUFACTURED. PILOT REPORTED EXCESSIVE LOSS OF OIL AND LOW OIL PRESSURE ON RT ENGINE. DISASSEMBLY OF TURBOCHARGER REVEALED THE 3 GROOVES ON THE INBD THRUST BRG WERE MACHINED - [SDR KY7A882H17150](https://openairdocs.org/sdr/KY7A882H17150), Mar 2, 2011: ALTERNATOR. FAILED. ACFT WAS INBOUND AT CRUISE. E2 ALTERNATOR WAS FLICKERING ON OFF LINE MULTIPLE TIMES AND FAILED. E1 ALTERNATOR FAILED AFTER E2. PILOT LOST ELECTRICAL POWER AND L - [SDR CA110203004](https://openairdocs.org/sdr/CA110203004), Jan 28, 2011: BURNER CAN. CRACKED. (CAN) BURNER CAN CRACKS IN SOUTHWIND COMBUSTION HEATER WITH ONLY 170 HRS SINCE OVERHAUL BY AIRCRAFT HEATING AND ELECTRICAL INC. THIS CAUSED EXHAUST FUMES IN AIR - [SDR 2010FA0001149](https://openairdocs.org/sdr/2010FA0001149), Nov 1, 2010: BOSS. CRACKED. DURING VISUAL INSP OF THE ENGINE DISCOVERED INTERCOOLER AFT MOUNTING BOSS TO BE CRACKED 3/4 OF THE WAY AROUND. - [SDR 2010FA0001147](https://openairdocs.org/sdr/2010FA0001147), Sep 16, 2010: SHAFT. CRACKED. PILOT HAD A ROUGH RUNNING ENGINE AND DIFFICULTY CONTROLLING THE ENGINE RPM'S. PILOT SHUTDOWN AND FEATHERED THE RT ENGINE AND LANDED SAFELY. MX PERFORM REPAIR ON - [SDR 2009FA0000886](https://openairdocs.org/sdr/2009FA0000886), Oct 22, 2009: GEAR. WORN. DURING INSPECTION OF THE STARTER DRIVE UNIT PER AD 2007-05-15. FOUND STARTER ADAPTER DRIVE GEAR WORN BEYOND ACCECPTABLE LIMITS. REPLACED WITH KIT R-EQ6642. - [SDR 2009FA0000887](https://openairdocs.org/sdr/2009FA0000887), Oct 22, 2009: GEAR. WORN. DURING INSPECTION OF RIGHT ENGINE STARTER DRIVE UNIT PER AD 2007-05-15 FOUND THE CRANKSHAFT GEAR WORN BEYOND ACCEPTABLE LIMITS. REPLACED WITH KIT R-EQ6642 CONTA - [SDR 2009FA0000888](https://openairdocs.org/sdr/2009FA0000888), Oct 22, 2009: GEAR. WORN. DURING INSPECTION OF RIGHT ENGINE STARTER DRIVE UNIT PER AD 2007-05-15 FOUND THE CRANKSHAFT GEAR WORN BEYOND ACCEPTABLE LIMITS. REPLACED WITH CONTINENTAL KIT R- - [SDR 2009FA0000889](https://openairdocs.org/sdr/2009FA0000889), Oct 22, 2009: CLUTCH SPRING. BROKEN. PILOT REPORTED UNABLE TO START LEFT ENGINE. INSPECTED STARTER DRIVE UNIT AND FOUND CLUTCH SPRING BROKEN. REPLACED WITH CONTINENTAL KIT R-EQ6642 CONTAING AN OVER - [SDR XTTA09030918](https://openairdocs.org/sdr/XTTA09030918), Sep 3, 2009: AUTOPILOT SYS. SHORTED. ON APPROACH, A FEW WISPS OF SMOKE WAS SEEN IN THE COCKPIT EMANATING FROM THE PILOT'S SIDE OF THE INSTRUMENT PANEL. AT THE SAME TIME, AN ELECTRICAL SMOLDERING OD - [SDR CA090819006](https://openairdocs.org/sdr/CA090819006), Aug 12, 2009: FITTING. CRACKED. ON WALK AROUND BEFORE FLIGHT A VERY SMALL POOL OF FRESH FUEL WAS DISCOVERED DRIPPING FROM BOTTOM OF LT ENG COWL, UPON FURTHER EXAMINATION A BRASS FUEL FITTING I - [SDR 2009FA0000438](https://openairdocs.org/sdr/2009FA0000438), Mar 30, 2009: BOLT. SHEARED. DURING FUEL SYSTEM SETUP, SEVERE OIL LEAK WAS OBSERVED WHICH NECESSITATED UBRUPT SHUTDOWN. UPON FURTHER INSPECTION A HOLE WAS DISCOVERED IN TOP OF NR 4 EXHAUST - [SDR CA081212002](https://openairdocs.org/sdr/CA081212002), Dec 5, 2008: BEARING. FAILED. (CAN) IN CRUISE PILOT NOTICED SPARKS COMING FROM RT ENGINE. UPON EXAMINATION ON GROUND BY MX, ALTERNATOR OUTER BRG. FAILED. SHAFT DEFORMED FROM HEAT. FAILURE OF - [SDR O5W2007F00000](https://openairdocs.org/sdr/O5W2007F00000), Nov 20, 2007: LOCK PLATE. DESTROYED. THIS ENGINE WAS REMOVED ON AUG 31, 2007, HOBBS TIME 1523.9 DUE TO A CRACKED ENGINE CASE. THE ENGINE WAS SENT FOR REPAIR. REPAIRED THE ENGINE ON SEPT 20, 2007. T - [SDR CA070514024](https://openairdocs.org/sdr/CA070514024), May 14, 2007: EXHAUST VALVE. FAILED. (CAN) EXHAUST VALVE HEAD SEPARATED, STRIKING THE INTAKE VALVE AND CAUSING THE INTAKE VALVE TO FAIL. THE HEAD OF THE EXHAUST VALVE LODGED INTO THE EXHAUST PORT. - [SDR 2007FA0000366](https://openairdocs.org/sdr/2007FA0000366), Apr 12, 2007: GASKET. BROKEN. AIRCRAFT DEPARTED ON A CHARTER , PILOT WAS OVER LAKE WHEN HE NOTICED ENGINE OIL COMING OUT OF TOP ENGINE COWLING COOLING LOUVERS. PILOT NOTIFIED CONTROL HE WAS - [SDR CA070228008](https://openairdocs.org/sdr/CA070228008), Feb 8, 2007: WINDOW. CRACKED. (CAN) DURING MAJOR INSPECTION OF AIRCRAFT, REMOVED PLASTIC UPHOLSTERY COVER ON THE EMREGENCY EXIT HATCH. WINDOW FOUND CRACKED AT ALL LOWER ATTACH SCREW HOLES, O - [SDR 2006F00031](https://openairdocs.org/sdr/2006F00031), Jul 18, 2006: ENGINE. SEIZED. PILOT REPORTED VIBRATION FROM LT ENGINE SHORTLY AFTER TAKEOFF. SECURED ENGINE, RETURNED TO AIRPORT. INITIAL INVESTIGATION FOUND ENGINE SEIZED/LOCKED UP. SUSPECT - [SDR CA061030003](https://openairdocs.org/sdr/CA061030003), Jun 27, 2006: GEAR. BROKEN. (CAN) (1)GEAR TOOTH BROKE OFF THE STARTER SHAFT GEAR IN A NEW STARTER ADAPTER ASSEMBLY CAUSING FOREIGN MATERIAL TO ENTER THE ENGINE LEADING TO FURTHER DAMAGE IN - [SDR 2006F00002](https://openairdocs.org/sdr/2006F00002), Jan 12, 2006: UNKNOWN. UNKNOWN. DURING TAKEOFF FROM 2W6 LT ENGINE SHUTDOWN, SECURED ENGINE, CIRCLED, RETURNED FOR LANDING. CAUSE YET TO BE DETERMINED. PRELIMINARY INDICATIONS ARE FAILED FUEL P - [SDR CA051220007](https://openairdocs.org/sdr/CA051220007), Dec 7, 2005: BELLCRANK. BROKEN. AIRCRAFT LAND GEAR EXTENSION CARRIED OUT AS NORMAL ON AIRPORT APPROACH. ON THE GROUND, THE PILOT NOTICED THAT THE RIGHT MAIN GEAR INBOARD DOOR WAS NOT CLOSED. U - [SDR 2005FA0001593](https://openairdocs.org/sdr/2005FA0001593), Dec 6, 2005: PUMP. INOPERATIVE. THE PILOT REPORTED THE HEATER HAD STOPPED DURING FLIGHT. AFTER RETURNING TO THE MAINTENANCE SHOP THE HEATER WAS TROUBLESHOT AND INSPECTED. FOUND THE HEATER FUEL - [SDR CA051026007](https://openairdocs.org/sdr/CA051026007), Oct 20, 2005: CONTACT. MELTED. ENGINE STARTER RELAY ARCING, CAUSED THE CONTACTS TO WELD TOGETHER SOLID. WHICH IN TURN CAUSED STARTER TO RUN CONTINOUSLY UNTIL IT OVERHEATED AND BURNED. POTENTI - [SDR 2005FA0000750](https://openairdocs.org/sdr/2005FA0000750), May 1, 2005: STARTER. INOPERATIVE. STARTER INOPERATIVE. (K) - [SDR CA050216005](https://openairdocs.org/sdr/CA050216005), Jan 31, 2005: PISTON PIN. BROKEN. (CAN) PISTON (NR1) BROKE AT PIN BOSS RESULTING IN LARGE CHUNKS OF ALUMINUM FALLING INTO THE ENGINE, ENDING UP AT THE BOTTOM OF THE SUMP. SMALLER PIECES OF THE M - [SDR CA050125013](https://openairdocs.org/sdr/CA050125013), Jan 20, 2005: BEARING CAGE. DISINTEGRATED. (CAN) ATTEMPT TO START RT ENGINE AT EXTREME COLD TEMP. ENGINE BACKFIRED, STARTER ADAPTER SHAFT BRG CAGE DISINTEGRATED, SHAFT OIL SEAL BLEW. - [SDR CA040203008](https://openairdocs.org/sdr/CA040203008), Jan 22, 2004: BOLT. WRONG PART. (CAN) BOLTS, BUSHINGS SEIZED ON MAIN DOOR TOP HALF. INCORRECT HARDWARE STACK-UP, IE INTERNAL WRENCHING BOLT HAD PLAIN WASHER UNDER RADIUS OF HEAD. SEVERAL AIRCR - [SDR AK62004F00002](https://openairdocs.org/sdr/AK62004F00002), Oct 14, 2003: SPAR CAP. CORRODED. DURING AN ATTEMPT TO REPAIR CORROSION AROUND THE LT WING FLAP BELLCRANK, LOCATED IN THE EXHAUST GAS TRAIL ON LOWER SIDE OF WING. DISCOVERED SEVERE INTERGRANULAR - [SDR 2003FA0000976](https://openairdocs.org/sdr/2003FA0000976), Sep 15, 2003: SPARK PLUG. CRACKED. DURING ROUTINE 100 HR INSPECTION 4 SPARK PLUGS ON RIGHT ENGINE FOUND TO HAVE CRACKS IN THE PLUG BODY BETWEEN THE GASKET SURFACE AND THE WRENCH HEX. - [SDR AUS20030690](https://openairdocs.org/sdr/AUS20030690), Jul 8, 2003: CONNECTING ROD. DAMAGED. (AUS) NR 2 CYLINDER CONNECTING ROD PN 655004 BIGEND CAP CONTACTING CAMSHAFT PN 653056 NR 2 CYLINDER EXHAUST LOBE. INSPECTION FOUND A SIMILAR PROBLEM WITH NR 6 C - [SDR AUS20030666](https://openairdocs.org/sdr/AUS20030666), Jul 2, 2003: CYLINDER. WRONG PART. (AUS) RT ENGINE HAD TWO UNAPPROVED CYLINDERS FITTED. PN 653452 CYLINDERS ARE NOT APPROVED FOR THE GTSIO520-H MODEL CYLINDERS UNLESS MODIFIED. THE TWO CYLINDERS - [SDR AUS20030659](https://openairdocs.org/sdr/AUS20030659), Jun 30, 2003: ROD BEARING. WORN. (AUS) CONNECTING ROD LITTLE END BEARING MOVED AND WORE ON PISTON. INVESTIGATION FOUND TWO MORE LITTLE END BEARINGS LOOSE. - [SDR AUS20030660](https://openairdocs.org/sdr/AUS20030660), Jun 30, 2003: INJECTOR. MISINSTALLED. (AUS) FUEL INJECTOR NOZZLE INCORRECTLY FITTED. TWO RUBBER SEALS AND ONE METAL WASHER FITTED INSTEAD OF THE CORRECT FIT OF ONE RUBBER SEAL AND ONE METAL WASHER. - [SDR AUS20030380](https://openairdocs.org/sdr/AUS20030380), Jan 31, 2003: LINE. LOOSE. (AUS) LT ENGINE NR 5 CYLINDER FUEL INJECTION LINE LOOSE AT ATTACHMENT TO FLOW DIVIDED. - [SDR CA030129001](https://openairdocs.org/sdr/CA030129001), Jan 22, 2003: LINE. BLOCKED. (CAN) ON GROUND WARM UP AND RUN ALL WAS NORMAL, ON TAKEOFF RT MANIFOLD STAYED AT 28.5 INCHES, ALL OTHER INDICATIONS AND ENGINE FUNCTIONS NORMAL. TAKEOFF ABORTED - [SDR AK62002F00001](https://openairdocs.org/sdr/AK62002F00001), Aug 23, 2002: BEARING. FAILED. THE RT ENGINE APPEARS TO HAVE SUFFERED FROM OIL STARVATION AT THE NR 5 ROD JOURNAL. THIS CAUSED THE ROD TO SEPARATE AND PROTRUDE THRU THE TOP OF THE CRANKCASE. - [SDR BLIA512C8502](https://openairdocs.org/sdr/BLIA512C8502), Aug 5, 2002: SHAFT. FAILED. DURING CLIMB TO MK LEVELED AT 18K. ENGINE OPS BECAME ROUGH, THEN TACH WENT TO ZERO. PILOT OBSERVED SMOKEY MIST FROM LOUVERS. ENGINE TURNED OFF AND FEATHERED. DE - [SDR AUS20020125](https://openairdocs.org/sdr/AUS20020125), Jan 26, 2002: EXHAUST PIPE. LEAKING. (AUS) RH ENGINE FIRE. ENGINE COMPARTMENT DAMAGED. FIRE WAS EXTINGUISHED USING CABIN FIRE EXTINGUISHER. INVESTIGATION FOUND THE FIRE WAS CAUSED BY MISALIGNMENT O - [SDR DMV2002F00000](https://openairdocs.org/sdr/DMV2002F00000), Jan 21, 2002: BEARING. FAILED. STARTER ADAPTER HOUSING MAIN BEARING FAILURE, RESULTS IN EXCESSIVE PLAY TO REAR ENGINE GEAR ASSEMBLY ADVISE UPGRADING TO BETTER STYLE OF BEARING DESIGNED FOR BE - [SDR 2002FA0000018](https://openairdocs.org/sdr/2002FA0000018), Dec 12, 2001: BOLT. LOOSE. ALTERNATOR THRU BOLT CAME OUT AND ARCED ON STATOR TERMINAL. INSPECTED ALTERNATOR AND REINSTALLED ALTERNATOR BOLT. CHECKED TORQUE ON REMAINING BOLTS. SUGGEST BEN - [SDR LQU2002F00000](https://openairdocs.org/sdr/LQU2002F00000), Dec 1, 2001: PIN. MISSING. RIGHT ENGINE RAN ROUGH AND VIBRATED BADLY IN FLIGHT, SHUT DOWN. VISUAL INSPECTION FOUND OPEN HOLE IN BACK OF CRANKCASE. IDLER GEAR SUPPORT PIN MISSING. FOUND PI All 102: https://openairdocs.org/engine/continental-gtsio-520-h/reports.md ## STCs that may be installed (OpenAirDocs) (26) Approved for this engine model: the STC's model list names it on its data sheet, or a series that includes it. In force first, then newest. The registry doesn't record which STCs an aircraft has. - [STC SE04349CH](https://openairdocs.org/stc/SE04349CH): Installation of SureFly electronic ignition. SureFly Partners Ltd - [STC SE02352CH](https://openairdocs.org/stc/SE02352CH): Installation of Challenger cleanable oil filter assembly. Challenger Aviation Products Inc - [STC SE03309CH](https://openairdocs.org/stc/SE03309CH): Installation of Engine Preheat Kit, p/n TSP6CYL-2927-115 for 115 volt application. Hartzell Propeller Inc - [STC SE01966WI](https://openairdocs.org/stc/SE01966WI): Use of GAMI G100UL High Octane Unleaded Avgas in spark ignition piston aircraft engines. General Aviation Modifications Inc - [STC SE2340SW](https://openairdocs.org/stc/SE2340SW): Installation of modified cylinder assemblies, barrels, piston, and repaired crankcases. Continental Motors, Inc - [STC SE34WE](https://openairdocs.org/stc/SE34WE): Installation of Electro-Coatings, Inc., piston rings on Continental pistons. Continental Motors, Inc - [STC SE5820SW](https://openairdocs.org/stc/SE5820SW): Installation of Airmotive exhaust valve, P/N AEC-637781. Continental Motors, Inc. Lists GTSIO-520 Series - [STC SE8776SW](https://openairdocs.org/stc/SE8776SW): Installation of coated cylinders and piston rings. Continental Motors, Inc. Lists GTSIO-520 Series - [STC SE3330NM](https://openairdocs.org/stc/SE3330NM): Continental valve cover gasket. Real Gaskets Tennessee - [STC SE00754DE](https://openairdocs.org/stc/SE00754DE): Installation of an auxiliary oil sump port on the oil sump pan. Oilamatic, Inc - [STC SE5726SW-D](https://openairdocs.org/stc/SE5726SW-D): Installation of Floscan - 20lb or - 203b fuel flow transducers. RAM Aircraft Limited Partnership - [STC SE3767SW-D](https://openairdocs.org/stc/SE3767SW-D): Installation of induction hose clamps. RAM Aircraft Limited Partnership - [STC SE612GL](https://openairdocs.org/stc/SE612GL): Installation of a Shadin Company fuel flow transducer. Shadin Avionics - [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 SE09963SC](https://openairdocs.org/stc/SE09963SC): Installation of modified fuel injector nozzles. General Aviation Modifications, Inc - [STC SE3767SW](https://openairdocs.org/stc/SE3767SW): Installation of induction hose clamps. RAM Aircraft Limited Partnership - [STC SE4591SW](https://openairdocs.org/stc/SE4591SW): Installation of RAM magneto pressurization system. RAM Aircraft Limited Partnership - [STC SE8338SW](https://openairdocs.org/stc/SE8338SW): Install locknuts on cylinder attachment studs and thru-bolts, and install 6 additional cylinder attachment studs onto engine crankcases. RAM Aircraft Limited Partnership. Lists GTSIO-520 Series - [STC SE09513SC](https://openairdocs.org/stc/SE09513SC): Installation and usage of Exxon 20W50 Multigrade aircraft engine oil conforming to Exxon Oil Formulation WS-3013. Exxon Company USA. Lists GTSIO-520 Series - [STC SE00350SE](https://openairdocs.org/stc/SE00350SE): Installation of sump mounted chip detector. Aviation Development Corporation - [STC SE09059SC](https://openairdocs.org/stc/SE09059SC): Remove cylinder assembly, fuel nozzles, induction tubes, and injector air reference system and add corresponding components from GTSIO-520-L engine. Texas Skyways Inc - [STC SE452NE](https://openairdocs.org/stc/SE452NE): Installation and usage of 'Mobil AV 1' aviation oil. Mobil Research & Development Corp. Lists GTSIO-520 Series - [STC SE5879SW](https://openairdocs.org/stc/SE5879SW): Use of Phillips X/C II 20W-50 and25W-60 oil (OSS 55875) in all Avco reciprocating aircraft engines from 65 to 450 BHP. Phillips Petroleum Co. Lists GTSIO-520 Series - [STC SE12GL](https://openairdocs.org/stc/SE12GL): Installation of oil filler cap. Ray Whyte Electric Products Co --- 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.