Continental GTSIO-520-N

Service difficulty reports · 54

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Query with SQL
duckdb -csv -c "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 = 'GTSIO520N'
  ORDER BY difficulty_date DESC"

Prints the whole list as CSV. It reads the release’s Parquet files over HTTPS, so there’s nothing to download first. Install DuckDB to run it.

SDR 2026FA0000551Gasket · degradedFAILED GASKET PN: 5154056-2 FOR THE AC COMPRESSOR, RESULTING IN A SEVERE ENGINE OIL LEAK, SPRAYING ENGINE OIL ON THE EXHAUST SYSTEM.Jun 30, 2026 · N68685 · Cessna 421C · Cabin Cooling SystemSDR 2018FA0000508Pressure Switch · failedIN SPITE OF NO REQUIREMENT TO TEST THIS PRESSURE SWITCH. FOUND THIS PRESSURE SWITCH FAILED IN THE CLOSED POSITION.Dec 11, 2018 · N605SR · Cessna 421C · Heating SystemSDR CXUA201803210140Engine · failedRIGHT ENGINE FAILED.Dec 7, 2017 · N726RT · Cessna 421C · Engine (Reciprocating)SDR NI6R201503050024Crankcase · crackedDURING INVESTIGATION OF LT ENGINE OIL LEAK, A CRACK WAS DISCOVERED IN THE ENGINE CASE OTBD SIDE RUNNING BETWEEN THE NR 2 & NR 4 CYLINDERS.Mar 5, 2015 · N505SF · Cessna 340A · Reciprocating Engine Cylinder SectionSDR NI6R201502260023Pin · brokenRT ENGINE NR 5 WRIST PIN, INTERNAL ALUMINUM PIECE BROKEN.Feb 26, 2015 · N505SF · Cessna 340A · Reciprocating Engine Power SectionSDR IGXR2014FA0000710Line · failedAFTER TAKEOFF, LT ENGINE STOPPED PRODUCING FULL POWER. AIRCRAFT SAFELY RETURNED BACK WITH 1 ENGINE. EXAMINED LT ENGINE AND DISCOVERED CYL NR 6 FUEL LINE DETACHED FROM FUEL MANIFOLD, LINE FAILED AT SOLDER JOINT AT MANIFOLD END. R & R CYLINDER NR 6 FUEL LINE Dec 15, 2014 · N122TJ · Cessna 421C · Aircraft Fuel Distribution SystemSDR 2013FA0000674Boot · failedEYELET ATTACHMENT NOT FULLY INSULATED ALLOWING DIRECT SHORT TO GROUND ON ONE DE-ICE BOOT. THE SECOND WAS A FAILED INBD CIRCUIT.Nov 8, 2013 · N720FS · Cessna 421C · Airfoil Anti/De-ice SystemSDR YN8R201307310001Pump · leakingAFTER FUELING, PILOT NOTICED FUEL DRIPPING FROM GANG DRAIN BENEATH ENGINE. DISCOVERED FUEL WAS DRIPPING FROM ENGINE DRIVEN FUEL PUMP AT A RATE OF A DROP EVERY THREE SECONDS.Jul 31, 2013 · Cessna 421C · Engine Fuel PumpSDR 2012FA0000810Cylinder · detachedNR 5 CYLINDER UPPER BASE STUDS FAILED - THREE BLIND STUDS & 1 CASE THROUGH-STUD. CYLINDER PARTIALLY DISLODGED FROM CRANKCASE, LOSS OF ENGINE OIL, SIGNIFICANT VIBRATION, PRECAUTIONARY IN-FLIGHT SHUTDOWN AND FEATHER.Nov 21, 2012 · N2668A · Cessna 421C · Reciprocating Engine Cylinder SectionSDR 2008FA0000625Bushing · crackedDURING CYLINDER NR 5 REMOVAL TO CORRECT HIGH OIL CONSUMPTION , FOUND CONNECTING ROD PISTON PIN BUSHING CRACKED WITH LARGE PIECE MISSING FROM EDGE. FAILURE IS AS NOTED IN MFG SB SB07-1. REMOVED ALL 6 CYLINDERS FROM ENGINE AND FOUND 4 MORE BUSHINGS CRACKED IN SSep 5, 2008 · N410AJ · Cessna 421C · Reciprocating Engine Power SectionSDR 2007FA0000944Starter · shortedOVERHAULED STARTER FAILED AFTER 30 HOURS. (K)Oct 12, 2007 · N421KD · Cessna 421C · Engine StarterSDR 2006FA0001178Clamp · crackedDURING PROGRESSIVE INSPECTION FOUND LT ENGINE TURBOCHARGER TO TAILPIPE CLAMP CRACKED ALONG CIRCUMFERENCE, APPROX. 4 INCH CRACK. FOUND SAME PN CLAMP ON THE RT ENGINE OF THIS AIRCRAFT TO BE CRACKED 7 HOURS PREVIOUSLY.Dec 12, 2006 · Cessna 421 · Exhaust TurbochargerSDR 2006FA0001111Clamp · crackedPN 2274-50 (ALSO PN NH1000897-50) CLAMP HOLDING TAILPIPE TO THE TURBO CRACKED LENGTHWISE ALONG THE CIRCUMFERENCE OF THE CLAMP. TOTAL LENGTH OF THE CRACK IS 3 INCHES.Nov 21, 2006 · Cessna 421C · Engine Collector/Tailpipe/NozzleSDR 2006FA0000985Line · rupturedFUEL HOSE RUPTURED, SPRAYING FUEL ON THE HOT EXHAUST MANIFOLD TO TURBO CHARGER CAUSING AN ENGINE FIRE ON THE GROUND. (K)Sep 22, 2006 · N469S · Cessna 421C · Engine Fuel DistributionSDR ISW1520050019Adapter · failedTHE ENGINE QUIT RUNNING AND SEIZED DURING FLIGHT. THE STARTER ADAPTER FAILED AND CAUSED THE ENGINE TO SEIZE. MAINTENANCE RECORDS SHOW THAT THE STARTER WAS REPLACED TWO TIMES BECAUSE OF HARD STARTING. ONCE AT 99 HOURS AND AGAIN AT 90 HOURS PRIOR TO ENGINE FAIFeb 23, 2006 · N421LH · Cessna 421C · Engine Starting SystemSDR 2005FA0001618Distributor Gear · disintegratedDURING CRUISE LT ENGINE BEGAN TO RUN ROUGH. MAINTENANCE TRACED PROBLEM TO LT MAG. UPON OPENING THE MAGNETO, DISCOVERED THE DISTRIBUTOR GEAR MISSING 98 PERCENT OF ITS TEETH WITH MANY BROKEN PIECES AND SHAVINGS INSIDE THE MAG. THE DISTRIBUTOR GEAR BUSHING IS Dec 15, 2005 · N2740 · Dhav DHC2* · Magneto/DistributorSDR AU510001911Gear · damaged(AUS) ENGINE CRANKSHAFT GEAR MISSING TEETH. SUSPECT CAUSED BY A PIECE OF METAL FROM THE STARTER ADAPTER GEAR JAMMING IN THE GEAR TEETH. METAL CONTAMINATION OF ENGINE. (CASA NR 510001911)Dec 12, 2005 · Cessna 421C · Reciprocating Engine Power SectionSDR VA12004F00000Crankshaft · brokenCRANKSHAFT HAD BEEN ULTRASONIC INSPECTED IAW APPLICABLE CSB 99-6A DURING OVERHAUL. RETURNED TO SERVICE AND AFTER 141.1 HOURS, FAILED IN SAME GENERAL OF REQUIRE INSPECTIONS. BROKEN AT NR 3 MAIN JOURNAL TO NR 5 ROD THROW.Aug 2, 2004 · N421GF · Cessna 421C · Reciprocating Engine Power SectionSDR 2004FA0000632Line · crackedPILOT EXPERIENCED EGT FLUXUATIONS, MADE PRECAUTIONARY LANDING. INSPECTION REVEALED CYLINDER NR 4 INJECTOR LINE WAS CRACKED AND LEAKING FUEL AT THE BASE OF THE BRAZED ON SLEEVE BETWEEN THE SLEEVE AND THE BALL END.Jun 15, 2004 · N421GF · Cessna 421C · Engine Fuel DistributionSDR J7B2003F00001Coil · separatedON TAKE OFF THE RT ENGINE FEATHERED. INSPECTION REVEALED PROPELLER SYNCROPHASER COIL HAD BECOME SEPARATED FROM THE GOVERNOR BODY, CAUSING THE PROPELLER TO FEATHER. THE ATTACHING STUDS ON THE COIL HAD SHEARED AND BECAME BOUND UP WITH THE FLYWEIGHT ASSY. PULLOct 10, 2003 · N421GF · Cessna 421C · Propeller Synchronizer SectionSDR AUS20030839Housing · faulty(AUS) RT ENGINE OIL PUMP HOUSING FAULTY.Jul 16, 2003 · Cessna 421C · Reciprocating Engine Oil SystemSDR 2002F00038Piston · failedTRANSISITIONING FROM TAKE-OFF TO CLIMB PHASE OF FLIGHT, AFTER REDUCING POWER NR 1 ENGINE SHUTDOWN. PILOT FEATHERED PROP AND MADE UNEVENTFUL LANDING. REMOVAL OF NR 5 CYLINDER REVEALED SEVERE DAMAGE TO THE TOP OF THE PISTON, WITH BROKEN RINGS. VALVE WERE REALITIJan 17, 2002 · N763CA · Cessna 421C · Reciprocating Engine Cylinder SectionSDR 2002F00037Torque Tube · corrodedDURING A AAIP 100 HOUR INSPECTION, SEVERE CORROSION WAS NOTED IN THE RIGHT ELEVATOR TORQUE TUBE. THE CORROSION (RUST) HAS DEPLETED AT LEAST 75% OF THE MATERIAL THICKNESS. THE LEFT ELEVATOR WAS REMOVED TO INSPECT THE TORQUE TUBE FOR CORROSION. NONE WAS NOTED. TDec 21, 2001 · N6793V · Cessna 421C · Elevator Control SystemSDR 2001F00021Nut · crackedDURING ANNUAL INSPECTION FOUND NUT CRACKED. NOTHING UNUSUAL NOTICED AS FAR AS INSTALLATION WAS CONCERNED. FOUND THAT NUT CRACKED IN THE CENTER OF THE V ON THE SMALLEST DIAMETER PART OF THE NUT. INSTALLED NEW NUT AND TORQUED TO SPECS. OTHER ENGINE CHECKED AJun 20, 2001 · N6865Z · Cessna 421C · Reciprocating Engine Power SectionSDR AUS20010645Bearing · failed(AUS) LH ALTERNATOR. INVESTIGATION FOUND REAR BEARING COLLAPSED CAUSING DRIVE ADAPTER FAILURE AND METAL CONTAMINATION OF THE ENGINE.Jun 12, 2001 · Cessna 421C · DC Generator-AlternatorSDR 20010515AP005Exhaust Header · defectiveTHIS UNIT IS MANUFACTURED IN TWO HALVES, WHERE THE UPPER & LOWER HALVES WELDED TOGETHER (AT THE WASTE GATE FLANGE) THERE IS A HOLE AT THE WELD AREA ON EACH SIDE. THE REPLACMENT PART HAS AN ADDITIONAL WELD IN THESE AREAS THAT ARE NOT PRESENT ON THE DEFECTIVE PMay 4, 2001 · N6867D · Cessna 421C · Engine Collector/Tailpipe/NozzleSDR AU001155Pipe · corroded(AUS) OXYGEN PIPE CORRODED AND LEAKING IN AREA BEHIND PILOTS SEAT SIDELINING. PIPE CONTAINED PIN HOLE CORROSION IN THE AREAS TOUCHING THE SCAT HOSE.Dec 11, 2000 · Cessna 421C · Crew Oxygen SystemSDR 20001206SH032Line · looseTHE LEFT ENGINE TURBOCHARGER COMPRESSOR DISCHARGE REFERENCE LINE CAME OFF AT CRUISE POWER AT 15,500 FEET CAUSING THE ENGINE TO DIE WITH AN EXCESSIVELY RICH MIXTURE. THE PILOT DID NOT ATTEMPT LEANING DURING TROUBLESHOOTING AND FEATHERED THE ENGINE, LANDED SAFENov 20, 2000 · N4119M · Cessna 421C · Exhaust TurbochargerSDR 20000331SH025Stud · failedDURING INSPECTION OF OIL LEAK, FOUND NR 5 CYLINDER BASE FRONT LOWER MOUNT STUD BROKEN. POSSIBLY, THE STUD WAS HARD AND BROKE UNDER STRESS. (X)Mar 6, 2000 · N421CH · Cessna 421 · Reciprocating Engine Cylinder SectionSDR 20000403SH002Stud · failedDURING NORMAL ENGINE OPERATION, NOTICED OIL LEAK ON FRONT OF ENGINE. AFTER CLEANING AND INSPECTION, FOUND THE FRONT THROUGH-STUD BROKEN. POSSIBLE CAUSE COULD BE IMPROPER HARDENING OF THE BOLT. (X)Mar 6, 2000 · N421LH · Cessna 421C · Reciprocating Engine Cylinder SectionSDR 99ZZZX4549Support Pin · failedFOREIGN OBJECT DAMAGE WITHIN LEFT ENGINE ASSEMBLY CAUSED IDLER GEAR SUPPORT PIN BETWEEN MAGNETO DRIVES TO SHEAR CAUSING MOUNT STUDS TO BREAK AND THE GEAR IT RIDES ON TO ROTATE AND BECOME UNMESHED. IT AFFECTED MAGNETO TIMING AND CAUSED ENGINE TO LOSE POWER ANDSep 21, 1999 · N6VH · Cessna 421C · Reciprocating Engine Rear SectionSDR 99ZZZX2275Crack · crackedPILOT REPORTED EXCESSIVE OIL LEAK ON RIGHT ENGINE CAWLING PULLED AND 3 INCH - 4 INCH CRACK NOTED AT NR 5 CYLINDR BASE. IDENTIDAL PROBLEM OCCURRED.May 1, 1999 · N421GF · Cessna 421C · Engine (Reciprocating)SDR 99ZZZX1733Fuel Line · brokenPILOT LANDED AND STATED THAT DURING FLIGHT, THE LEFT ENGINE STARTED TO VIBRATE AND EGT INDICATION ON NR 4 CYLINDER WENT TO ZERO. PILOT ELECTED TO SHUT DOWN THE LEFT ENGINE, FEATHER THE PROPELLER AND CONTINUE ON TO HOME BASE. INSPECTION OF THE LT ENGINE NR 4 Apr 12, 1999 · N264DC · Cessna 421C · Aircraft Fuel Distribution SystemSDR 99ZZZX1200Bolt · brokenWHILE TROUBLESHOOTING AN OIL LEAK, THE LOWER THRU-BOLT BETWEEN THE NR 4 AND NR 5 CYLINDER WAS FOUND BROKEN APPROXIMATELY .50 INCH FROM THE END. AFTER CYLINDER REMOVAL AND COMPLETE CRANKCASE AND TORQUE INSPECTION, NO OTHER DEFECTS WERE FOUND.Mar 1, 1999 · N215MP · Cessna 421C · Reciprocating Engine Power SectionSDR 99ZZZX1457Adapter · spalledAIRCRAFT IN FOR ROUTINE (SCHEDULED) 100 HOUR INSPECTION. STARTER ADAPTERS WERE REMOVED FROM BOTH ENGINES, AND INSPECTED IAW TCM SB NR CS894-4A. THE ADAPTER ASSY AND CRANKSHAFT GEAR ON THE NR 2 ENGINE (ITEM 3) DID NOT PASS INSPECTION CRITERIA OUTLINED, (DEEP SPFeb 24, 1999 · N745CA · Cessna 421C · Reciprocating Engine Rear SectionSDR 99ZZZX1458Gear · spalledAIRCRAFT IN FOR ROUTINE (SCHEDULED) 100 HOUR INSPECTION. STARTER ADAPTERS WERE REMOVED FROM BOTH ENGINES, AND INSPECTED IAW TCM SB NR CS894-4A. THE ADAPTER ASSY AND CRANKSHAFT GEAR ON THE NR 2 ENGINE (ITEM 3) DID NOT PASS INSPECTION CRITERIA OUTLINED, (DEEP SPFeb 24, 1999 · N745CA · Cessna 421C · Reciprocating Engine Power SectionSDR 99ZZZX583Rod · failedENGINE STARTED EXTREME VIBRATION CLIMBING THROUGH 13,000 FEET. OIL LEAK OBSERVED COMING FROM LOUVERS. ENGINE WAS SHUT DOWN AND PROPELLER FEATHERED. INSPECTION REVEALED 2 HOLES IN CASE HALVES ABOVE NR 1 AND NR 2 CYLINDERS. NR 1 CYLINDER ROD BROKEN. SEVERALJan 15, 1999 · N637DT · Cessna 421C · Reciprocating Engine Cylinder SectionSDR 99ZZZX365Crankcase · crackedDURING A PHASE 3 INSPECTION, A 1.50 INCH CRACK WAS NOTED ABOVE THE LEFT ENGINE, NR 2 CYLINDER. PER M90-17, THIS WAS IN A NON-CRITICAL AREA, SO THE CRACK WAS SCRIBE MARKED AND RETURNED TO SERVICE. DURING THE PHASE 4 INSPECTION, THE CRACK WAS NOTED TO HAVE PROJan 4, 1999 · N883FL · Cessna 421C · Reciprocating Engine Cylinder SectionSDR 98ZZZX3441Bearing · wornDURING ROUTINE INSPECTION OF THE AIRCRAFT MAGNETO TO ENGINE TIME CHECK REVEALED 15 DEGREE DISCREPANCY. FURTHER INSPECTION FOUND MAGNETO CAMSHAFT LOOSE IN THE HOUSING. SUBMITTER STATES EXTREME WEAR OF CAM BEARING DUE TO INADEQUATE LUBRICATION OF BEARING DURINAug 10, 1998 · N411MZ · Cessna 421C · Magneto/DistributorSDR 98ZZZX3442Bearing · wornDURING ROUTINE INSPECTION OF THE AIRCRAFT, MAGNETO TO ENGINE TIME CHECK REVEALED 15 DEGREE DISCREPANCY. FURTHER INSPECTION FOUND MAGNETO CAMSHAFT LOOSE IN THE HOUSING. SUBMITTER STATES EXTREME WEAR OF CAM BEARING DUE TO INADEQUATE LUBRICATION OF BEARING DURIAug 10, 1998 · N411MZ · Cessna 421C · Magneto/DistributorSDR 98ZZZX2032Driven Gear · wornPILOT REPORTED TACH INOPERATIVE AND LOSS OF OIL PRESSURE. INSPECTION REVEALED THE OIL PUMP DRIVE GEAR ASSY SHAFT HAD SHEARED AT POINT OF ENGAGEMENT TO THE CAMSHAFT GEAR AND SUBSEQUENT TACH INDICATION AND OIL PRESSURE LOSS OCCURRED. FURTHER INSPECTION OF THE Apr 20, 1998 · N745CA · Cessna 421C · Reciprocating Engine Oil SystemSDR 98ZZZX1986Valve Spring · failedPILOT REPORTED VIBRATION ON RT SIDE OF AIRCRAFT DURING TAKEOFF ROLL AND CLIMB OUT. COULD NOT CORRECT WITH ENGINE CONTROLS (RPM, M.A.P., FUEL OR MAGS). RETURNED TO AIRPORT MAINT FACILITY AND REPORTED OUT OF BALANCE PROP. UPON MAINT GROUND RUN, ENG RAN ROUGH,Mar 4, 1998 · N748CA · Cessna 421C · Reciprocating Engine Cylinder SectionSDR 98ZZZX2033Driven Gear · seizedPILOT REPORTED YAW IN AIRCRAFT AND APPARENT LOSS OF POWER ON LT ENGINE (LOW RPM AND MAP). PILOT EXERCISED EMERGENCY PROCEDURES TO RESTORE POWER, BUT WAS UNSUCCESSFUL AND THE ENG WAS SHUT DOWN IN-FLIGHT. PROP WAS ALREADY IN FEATHER POSITION WHICH WOULD INDICAFeb 20, 1998 · N745CA · Cessna 421C · Reciprocating Engine Oil SystemSDR AU980159Valve · worn(AUS) INLET FUEL VALVE ASSEMBLY WORN. VALVE FAILED TEST IAW AD/CESSNA400/100A4 DUE TO WORN VALVE STEM.Feb 13, 1998 · Cessna 421C · Fuel Transfer ValveSDR 97ZZZX5162Valve Seat · failedNEW TCM CYLINDER ASSYS INSTALLED AT ENGINE OVERHAUL. DATE STAMPED ON ROCKER BOSS: 7-97. AFTER BREAK-IN FLIGHT AND TEST FLIGHTS, NR 2 CYL ON LT ENGINE WAS NOTED TO HAVE LOW COMPRESSION: 18/80. LEAKAGE DETERMINED TO BE PAST INTAKE VALVE. REMOVAL AND DISASSNov 21, 1997 · N6798V · Cessna 421C · Reciprocating Engine Cylinder SectionSDR 97ZZZX1919Gear · failedNEW CRANKSHAFT GEAR P/N 653580 INSTALLED AT TIME OF ENGINE OVERHAUL IN CONJUNCTION WITH TCM SB CSB 94-4 IN KIT EQ6642. ENGINE FAILED APROXIMATELY 400.0 HOURS LATER. ENGINE DISASSEMBLY REVEALED THE POSSIBILITY THE GEAR BROKE FIRST CAUSING DAMAGE TO VALVE TRAINApr 22, 1997 · N6867L · Cessna 421C · Reciprocating Engine Power SectionSDR 96ZZZX6160Drive Adapter · wornSTARTER DRIVE GEAR WEAR UNACCEPTABLE IAW TELEDYNE CONTINENTAL CSB 94-4 EVEN THOUGH THE SERVICE KIT REQUIRED BY TCM CSB 94-4 HAD BEEN PREVIOUSLY INSTALLED AT THE ENGINE OVERHAUL. SUSPECT CAUSE: CSB 94-4 MAY NOT BE SUFFICIENT. SUBMITTER RECOMMENDS FLEET DATA Nov 16, 1996 · N749CA · Cessna 421C · Reciprocating Engine Rear SectionSDR AU960486Pipe · corroded(AUS) LH NACELLE FUEL TANK TRANSFER PUMP TO 'T' FITTING PIPE LEAKING FUEL FROM PIN HOLE DUE TO INTERNAL CORROSIONApr 16, 1996 · Cessna 421C · Aircraft Fuel Distribution SystemSDR 96ZZZX2407Piston · burnedAIRCRAFT LOST POWER ON NR 1 ENGINE. REMOVAL OF NR 5 CYLINDER REVEALED PISTON DOME EDGE BURNED AWAY FROM 6:00 POSITION TO 12:00 POSITION. AT 9:00 POSITION, PISTON DOME BURNED COMPLETELY THROUGH, APPROXIMATELY 1 INCH OF PISTON MATERIAL MISSING FROM EDGE TOWARDApr 2, 1996 · N67934 · Cessna 421C · Reciprocating Engine Cylinder SectionSDR 96ZZZX950Adapter Kit · excess wearON 12-27-95, A 50-HOUR INSPECTION WAS PERFORMED. METAL CONTAMINATION NOTED IN RT ENG OIL FILTER. FURTHER INVESTIGATION REVEALED TORSIONAL DAMPER AND STARTER SHAFT GEAR ASSY WERE LOOSE IN THE STARTER ADAPTER HOUSING. ADAPTER ASSY REMOVED AND FND NEEDLE BEARIDec 27, 1995 · N369NM · Cessna 421C · Reciprocating Engine Rear Section
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