# Service difficulty reports: Continental GTSIO-520-F A list on [Continental GTSIO-520-F](https://openairdocs.org/engine/continental-gtsio-520-f.md). Newest first. General aviation reporting is voluntary. - [SDR 2020FA0000006](https://openairdocs.org/sdr/2020FA0000006.md): Engine · malfunctioned · Oct 28, 2019 · N37127 · Cessna 404 · Engine (Reciprocating) > ENGINE DEVELOPED LOW OIL PRESSURE IN FLIGHT APPROX 20 PSI. REMOVED AND CLEANED OIL PRESSURE RELIEF PLUNGER. FOUND CARBON BITS IN OIL FROM CAVITY. ABOUT 20 HOURS LATER THE LOW OIL PRESSURE RETURNED. REMOVED OIL PRESSURE RELIEF PLUNGER. MORE CARBON BITS F - [SDR 2015FA0000245](https://openairdocs.org/sdr/2015FA0000245.md): Crankcase · cracked · Mar 11, 2015 · N88584 · Cessna 421C · Reciprocating Engine Power Section > DURING A 100 HOUR INSPECTION, FOUND A SUSPECT CRACK ON THE RT ENGINE BETWEEN THE NR 1 AND NR 3 CYLINDERS. PERFORMED A DYE PENETRATE INSPECTION AND VERIFIED AN APPROXIMATELY 4" CRACK IN THE CRANKCASE EXTENDING FROM A THROUGH BOLT UP INTO THE CRITICAL AREA AS OU - [SDR BGJA2013F00009](https://openairdocs.org/sdr/BGJA2013F00009.md): Bulkhead · cracked · Jan 10, 2013 · N9746C · Cessna T303 · Fuselage Main, Bulkhead > FOUND BULKHEAD AT BS 295.17 CRACKED FROM UPPER LT AND RT LIGHTNING HOLE THROUGH INBD FLANGE. IN ADDITION A.2500" CRACK WAS FOUND PROTRUDING INBD FROM STRINGER RELIEF JUST ABOVE TOP LT LIGHTNING HOLE. - [SDR JBZA201210261003](https://openairdocs.org/sdr/JBZA201210261003.md): Stud · broken · Oct 23, 2012 · N56RX · Cessna 421C · Reciprocating Engine Power Section > DURING AMT TROUBLESHOOTING OF THE NR 1 ENGINE ALTERNATOR INTERMITTENT, DISCOVERED CRANKCASE STUDS BROKEN, UNRELATED TO THE ALTERNATOR ISSUE, INITIATED THE DISASSEMBLY AND REMOVED CYLINDER, ALL NON-DESTRUCTIVE TESTING CHECKS OK, REPLACING THE STUDS, ALSO REPLA - [SDR 2010FA0000439](https://openairdocs.org/sdr/2010FA0000439.md): Gearbox · worn · Apr 30, 2010 · N421PD · Cessna 421B · Landing Gear Actuator > AFTER TAKEOFF GEAR DID NOT FULLY RETRACT. THE RED GEAR IN-TRANSIT LIGHT REMAINED ILLUMINATED. EMERGENCY GEAR EXTENSION WAS PERFORMED AND GOT (3) GREEN INDICATION. RETURNED TO AIRPORT AND PLACED ACFT ON JACKS. RETRACT CHECK PERFORMED AND AFTER GEAR UNLOCKED - [SDR 2010FA0000387](https://openairdocs.org/sdr/2010FA0000387.md): Bracket · broken · Apr 1, 2010 · N88719 · Cessna 404 · Elevator Miscellaneous Structure > (H12R) PREFLIGHT CONTROL CHECKED GOOD, THE ELEVATOR WAS HITTING THE CONTROL STOPS, ON TAKEOFF THE ACFT HAD PARTIAL ELEVATOR CONTROL, ON LANDING THE ACFT HAD PARTIAL ELEVATOR CONTROL, BEFORE FURTHER FLIGHTS THE CONTROLS WERE CHECKED, THE ELEVATOR BELLCRANK BRAC - [SDR 2009FA0000769](https://openairdocs.org/sdr/2009FA0000769.md): Diode · intermittent · Jul 14, 2009 · N3875C · Cessna 421C · Electrical Power System Wiring > PILOT COMPLAINED ABOUT RT ENG GOING TO HIGH FUEL PUMP PRESSURE INTERMITTENTLY WITH PUMP SET ON LOW, AFTER MANY HOURS OF TROUBLESHOOTING (IT ALWAYS WORKED IN THE SHOP PROPERLY), THE PROBLEM WAS DETERMINED TO BE AN INTERMITTENT DIODE IN THE FUEL BOOST PUMP CIRCU - [SDR 2006FA0000132](https://openairdocs.org/sdr/2006FA0000132.md): Windshield · blew out · Jan 30, 2006 · Cessna 421C · Flight Compartment Windows > DURING PRESSURIZED FLIGHT, AT 17000 FEET, THE RT SIDE WINDSHIELD CRACKED AND A MAJOR PORTION BLEW OUT. THE GLARESHIELD IS A ONE PIECE ASSY AND STAYED INTACT; THE RT SIDE REMAINED ATTACHED TO THE INSTRUMENT PANEL WHILE THE FASTENERS ON THE RT SIDE FAILED AND A - [SDR 2005FA0000621](https://openairdocs.org/sdr/2005FA0000621.md): Control Cable · damaged · Apr 11, 2005 · N5388J · Cessna 404 · Elevator Control System > DURING INSPECTION, FOUND CABLE TO BE BLENDED AT FAIRLEAD APPROX 6 INCHES FROM AFT END OF CABLE. PROBABLE CAUSE FROM NEW STYLE (STAINLESS STEEL) CABLE. NEW STYLE LASTED ONLY FRACTION OF TIME AS OLD STYLE. (SW01200504154) (K) - [SDR GNB2005F00003](https://openairdocs.org/sdr/GNB2005F00003.md): Line · corroded · Jan 11, 2005 · N54ZP · Cessna 404 · Hydraulic System, Main > FAILED HYDRAULIC PRESSURE CHECK. LINE LAYING ON DUCTING FOR HEATING CAUSING CORROSION TO FORM. (SW01200502894) (K) - [SDR AIH2004F00000](https://openairdocs.org/sdr/AIH2004F00000.md): Uplock Hook · broken · Sep 7, 2004 · N1007G · Cessna 421C · Landing Gear Retraction/Extension System > PILOT REPORTED LANDING GEAR WOULD NOT STAY RETRACTED. THE GEAR WOULD (SLAM) WHEN UP. THE LANDING GEAR EXTENDED PROPERLY AND AN UNEVENTFUL LANDING WAS MADE. MAINTENANCE PERSONNEL JACKED UP THE AIR CRAFT AND DUPLICATED THE PROBLEM, INSPECTION REVEALED THE RT - [SDR DYV2003F00003](https://openairdocs.org/sdr/DYV2003F00003.md): Governor · failed · Dec 1, 2003 · N4119M · Cessna 421C · Propeller Governor > AFTER TAKEOFF THE POWER WAS REDUCED TO CLIMB POWER. AT THE PROPELLER RPM REDUCTION FROM 2235 TO 1900, THE PROPELLER WENT DIRECTLY INTO FEATHER. A SAFE PRECAUTIONARY LANDING. UPON INVESTIGATION ALL ENGINE FUNCTIONS WERE FOUND NORMAL EXCEPT THAT THE POSITION. - [SDR DYV2003F00001](https://openairdocs.org/sdr/DYV2003F00001.md): Bellcrank · cracked · Jun 5, 2003 · N4119M · Cessna 421C · Landing Gear Steering System > COULD BE OVER STEERING ON TUG MOTOR OR EXCESSIVE USE. - [SDR BLI2003F00001](https://openairdocs.org/sdr/BLI2003F00001.md): Spacer · wrong part · Mar 31, 2003 · N65AE · Cessna 421B · AC Generator-Alternator > WHILE REPLACING AN ALTERNATOR, NOTICED THAT DRIVE GER RETAINING NUT WOULD NOT RUN DOWN SUFFICIENTLY TO INSTALL SAFETY. DISCOVERED 2 DIFFERENT SPACER SIZES ON OLD AND NEW AACT. REMOVED CORRECT SIZE SPACER FROM ANOTHER OHC ALTERNATOR AND INSTALLED. CONTACTED - [SDR EAT2003F00000](https://openairdocs.org/sdr/EAT2003F00000.md): Spar · damaged · Feb 1, 2003 · N167SA · Cessna 404 · Nacelle/Pylon, Main Frame > DURING A REPAIR FOR A EXHAUST BRACKET AND LOWER SKIN REPAIRS ON THE LEFT ENGINE NACELLE HEAT DAMAGE WAS FOUND ON THE LFET FORWARD SPAR BETWEEN WING STA CWS88-10555555. THIS DAMAGE IS MOST LIKELY DUE TO A CRACKED EXHAUST OUTLET OFF THE TURBO DIRECTING HOT EXHA - [SDR BLI2002F00001](https://openairdocs.org/sdr/BLI2002F00001.md): Alternator · failed · Mar 20, 2002 · N65AE · Cessna 421B · AC Generator-Alternator > LEFT ALTERNATOR FAILED TO COME ON LINE WHEN DEPARTURE WAS ATTEMPTED. ALTERNATOR WAS SHIPPED BY US TO REPAIR STATION. THEY INSTALLED IT AND THE AIRCRAFT WAS RETURNED TO SERVICE AND TO OUR FACILITY. - [SDR 2001FA0000417](https://openairdocs.org/sdr/2001FA0000417.md): Nut · failed · Aug 30, 2001 · N781SL · Cessna 421B · Main Landing Gear Strut/Axle/Truck > AIRCRAFT WAS TAXING FROM THE MAIN RUNWAY TO THE GATE, PILOT FELT AND HEARD BUMPING NOISE UPON MAKING A RIGHT TURN. AS HE WAS MAKING RIGHT TURN ONTO RAMP TORQUE LINKS SEPARATED CAUSING THE RIGHT WHEEL AND PISTON ASSEMBLY TO ROTATE ABOUT 135 DEGREES, CAUSING DA - [SDR BLIA512CB1701](https://openairdocs.org/sdr/BLIA512CB1701.md): Wire · chafed · Aug 15, 2001 · N65AE · Cessna 421B · Fire Detection > APPROACH TO AIRPORT: RIGHT ENGINE FIRE WARNING ON. REDUCED POWER, CO-PILOT LOOKED FOR SMOKE. NONE NOTED, LIGHT OUT LANDED, CALLED MAINTENANCE AIRCRAFT DID NOT RETURN TO BASE. LIGHT INDICATOR PROBLEM INSPECTED, EXHAUST AND ENGINE FOUND NO EVIDENCE OF DAMAGE - [SDR 20010501CW001](https://openairdocs.org/sdr/20010501CW001.md): Fuel Cap · cracked · Feb 7, 2001 · N12RJ · Cessna 421C · Heating System > FUEL LEAK AT HEATER FUEL FILTER ASSEMBLY IN RIGHT WING. CAP ON TOP OF ASSEMBLY WAS FOUND TO HAVE CRACK IN THREADS. CAP IS MADE OF ALUMINUM. PART IS PRESUMED TO BE ORIGINAL EQUIPMENT. NO KNOW DISASSEMBLY IN SERVICE HISTORY. CAP WAS LOOSE IN SPITE OF LOCK T ## The whole list in SQL Runs in DuckDB 1.2 or later on the release's Parquet files over HTTPS: ```sql SELECT sdr_id, difficulty_date, n_number, aircraft_make, aircraft_model, part_name, part_condition, jasc_code, discrepancy FROM 'https://openairdocs.org/data/latest/faa_service_difficulty_report.parquet' WHERE engine_model_key = 'GTSIO520F' ORDER BY difficulty_date DESC ``` This list as a web page: https://openairdocs.org/engine/continental-gtsio-520-f/reports --- 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.