Continental TSIO-520 series

Service difficulty reports · 403

Newest first. General aviation reporting is voluntary.

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 = 'TSIO520'
  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 2026FA0000832Clamp · brokenAIRCRAFT DEPARTED KHND. A FEW MINUTES AFTER REACHING FL 190 AND SETTING CRUISE POWER, THE LEFT ENGINE BEGAN TO LOSE POWER. THE LEFT ENGINE MANIFOLD PRESSURE BEGAN DECLINING SO PILOT DECLARED AN EMERGENCY AND IMMEDIATELY DIVERTED TO KSGU. THE INITIAL LOSS IN POSep 13, 2026 · N340LL · Cessna 340A · Reciprocating Engine Cylinder SectionSDR 2026FA0000327Alternator · destroyedALTERNATOR INPUT SHAFT HAS BEEN DAMAGED DUE TO DETROYED DRIVE COUPLING. DRIVE COUPLING HUB NO LONGER ROUND AND WOODRUFF KEY SLOT NO LONGER VISIBLE AS THE HOLE IS NOW EGG-SHAPED. DRIVE COUPLING HUB & GEAR COMPLETELY SEPARATED WITH NEARLY ALL RUBBER BUSHING MIMay 7, 2026 · N6823D · Cessna 340A · DC Generator-AlternatorSDR 2026FA0000329Alternator · destroyedALTERNATOR DRIVE COUPLING DESTROYED CAUSING SUBSEQUENT FAILURE OF ENGINE'S DRIVE GEAR P/N 657984. ALL FOUR BOLTS P/N 649205 SHEARED OFF OR THREADS STRIPPED FROM SHANKS CAUSING SEPARATION OF GEAR FROM CRANKSHAFT. LOCK PLATES P/N 641909 FOUND IN TACT IN OIL SUMay 7, 2026 · N252AN · Mooney M20K · DC Generator-AlternatorSDR 2025FA0000670Pump · leakingDURING A PLANNED FLIGHT FROM FORT WORTH MEACHAM (KFTW) TO KENOSHA, WI (KENW), THE PILOT OF A PIPER PA-46-310P MALIBU EXPERIENCED A FUEL SYSTEM ANOMALY. APPROXIMATELY 3 HOURS INTO THE FLIGHT AT FL230, THE PILOT OBSERVED THE INDICATED FUEL QUANTITY DECREASING THSep 12, 2025 · N383SA · Piper PA46310P · Engine Fuel PumpSDR 2024FA0000268Cylinder Head · separatedTHE PILOT REPORTED A LOSS OF MANIFOLD PRESSURE IN FLIGHT ALONG WITH A REDUCTION IN POWER AND CRUISE SPEED. THE AIRCRAFT SAT UNTIL THE 28TH OF MARCH AWAITING MAINTENANCE. UPON INVESTIGATION, THE CYLINDER HEAD WAS FOUND TO HAVE SEPARATED FROM THE CYLINDER BODY AMar 15, 2024 · N732SE · Cessna T210M · Reciprocating Engine Cylinder SectionSDR XGNA2020122400010Fitting · brokenPILOT REPORT: UPON DEPARTING ADS (GTX936 ADS-LBB) TOWER REPORTED SEEING A CONTRAIL STREAMING FROM THE PLANE. PILOT CONFIRMED AND SAID HE WOULD RETURN. NOT LONG LATER REPORTED THE RT ENGINE STARTING TO RUN ROUGH AND REQUESTED PRIORITY TO LAND. TOWER DISPATCHDec 24, 2020 · N3378Q · Cessna 402B · Reciprocating Engine Oil SystemSDR 2020FA0000377Ring · brokenELECTRICAL SYSTEM FAILURE. FOUND BROKEN RING TERMINAL AT POSITIVE TERMINAL OF ALTERNATOR. FOUND VOLTAGE REGULATOR INOP.Aug 18, 2020 · N761PM · Cessna T210M · AC Generator-AlternatorSDR 2020F00280Lifter · spalledREMOVED ALL HYDRAULIC LIFTERS TO INSPECT FOR SPALLING, DISCOVERED BADLY SPALLED EXHAUST LIFTER ON CYLINDER #4. INSPECTED CAM IN ACCORDANCE WITH CONTINENTAL SERVICE DIRECTIVE SID05-1B, INSTALLED NEW LIFTER AND WILL INSPECT CAM AGAIN IN 100 HOURS. IT IS DOUBTFJan 22, 2020 · N91025 · Cessna T207 · Reciprocating Engine Power SectionSDR HTKA2020010800001Engine · failedENGINE FAILED IN FLIGHT. NR 5 AND NR 6 CONNECTING ROD (CRANK END) PROTRUDING THROUGH TOP OF ENGINE CASE. HOLES IN BOTH SIDES OF CASE BELOW NR 5 AND NR 6 CYLINDERS ABOVE OIL PAN FLANGE. THE ENGINE HAS BEEN IN SERVICE SINCE 07/2016. IT IS A FACTORY REBUILT EAug 16, 2019 · N5409G · Cessna 404 · Engine (Reciprocating)SDR 2020FA0000109Shaft · brokenALTERNATOR WAS INSTALLED ON ENGINE. ENGINE INSTALLED IN ACFT ON 3/1/2017 ACFT TT 5410.1 SHAFT IN ALTERNATOR BROKEN, REMOVED 6/12/2019 ACFT TT5740.9 TIME IN SERVICE 330.8 HOURS.Jun 14, 2019 · N340UM · Cessna 120 · DC Generator-AlternatorSDR N3BA201608160001Line · crackedOIL LINE, FROM EXHAUST BYPASS VALVE TO VARIBLE ABSOLUTE PRESSURE CONTROLLER CRACKED AT ATTACHMENT FLARE. THIS CAUSED OIL LEAK THAT GOT WORSE DURING FLIGHT. DUE TO OIL LOSS, NR 4 PISTON CONNECTING ROD FAILED FROM OIL STARVATION DURNG TAXI.Jul 12, 2016 · N510NE · Cessna 402C · Reciprocating Engine Oil SystemSDR 2016FA0000306Return Spring · brokenWHILE IN CRUISE FLIGHT ABOVE 10,000 FEET, THERE WAS INSUFFICIENT PITCH TO REDUCE RPM TO CRUISE CONDITION. PROPELLER HUB DISASSEMBLED, AND FOUND A BROKEN PROPELLER RETURN SPRING WAS INTERFERING WITH THE HIGH PITCH STOP, SUCH THAT ONLY 27 DEGREES OF PITCH WERE Jun 23, 2016 · N210PF · Cessna P210N · Propeller Controlling SystemSDR 2016FA0000237Actuator · brokenDIRECT DRIVE AILERON AUTOPILOT ACTUATOR, ARC PA495A-1, WAS BROKEN INSIDE MOTOR HOUSING CAUSING THE AILERON CONTROLS TO HANG UP.May 13, 2016 · N414FC · Cessna 414A · Autopilot SystemSDR 2016FA0000218Downlock Arm · brokenSTARBOARD DOWNLOCK ARM ON THE NOSE GEAR FAILED UPON LANDING CAUSING SIGNIFICANT DAMAGE TO ACFT. POST FLIGHT INSPECTON SHOWED THE WELD AT THE BALL JOINT APEARED TO HAVE FAILED.Apr 10, 2016 · N58JC · Beech 58P · Nose/Tail Landing GearSDR 2016F00096Bolt · failedLEFT MLG SCISSORS ASSY. THE AN310-5 NUT GALLED OFF THE END OA AN AN175-20 BOLT. RESULTING IN THE FAILURE OF THE LT MLG SCISSORS ASSEMBLY.Mar 8, 2016 · N400HC · Cessna 340A · Main Landing Gear Strut/Axle/TruckSDR 2016FA0000083Motor · failedBRUSH BROKE LOOSE AND LODGED IN MOTOR. MOTOR SHORTED AND SMOKE ENTERED THE COCKPIT.Jan 9, 2016 · N253RL · Beech A36TC · Electrical Power SystemSDR 2015FA0000496Hub · crackedDURING ROUTINE INSPECTION, CRACKS WERE DISCOVERED IN THE HUB AT AFT EDGE, MATING SURFACE TO ENGINE CRANK FLANGE. THE MOST PROMINENT CRACK IS ABOUT .5" LONG. THERE IS NO DAMAGE HISTORY FOR THIS PROP. THE PROP IS INSTALLED UNDER STC SA3104SO TO AN ENGINE INSTAOct 19, 2015 · N6621A · Cessna T210N · Propeller Hub SectionSDR N3BA2016100500003Nut · brokenNR 4 CYLINDER'S CONNECTING ROD END CAP SEPARATED FROM CONNECTING ROD. INSPECTION OF ENGINE REVEALED THAT 1 OF THE 2 ATTACHMENT NUTS THAT SECURES END CAP TO CONNECTING ROD CRACKED INTO 4 PIECES ALLOWING END CAP TO STOP SECURING CONNECTING ROD TO CRANKSHAFT. COSep 18, 2015 · N38CJ · Cessna 402C · Reciprocating Engine Power SectionSDR HYIA20150729001O-Ring · leakingPILOT REPORTED FUEL ODOR IN COCKPIT. R & R THE RIGHT FUEL BOWL O-RING, NO FURTHER DEFECTS NOTED.Jul 26, 2015 · N781EA · Cessna 402C · Fuel Control/Reciprocating EnginesSDR HYIA20150206001Wire Harness · chafedPILOT REPORTED SEEING SMOKE FROM RT ENG ON SHUT DOWN. FURTHER INVESTIGATION FOUND CHAFED WIRE HARNESS IN RT ENG BAY. ACFT IS CURRENTLY IN MX REPAIRING & REPLACING AFFECTED WIRING.Feb 1, 2015 · N401TJ · Cessna 402C · Powerplant System WiringSDR ZSDA2014082200001Brake Sys · contaminatedAIRCRAFT DEPARTED TAXIWAY. NO DAMAGE TO AIRCRAFT. AIRCRAFT TOWED TO HANGAR. FOUND AIR BUBBLES IN BRAKE LINE WHILE BLEEDING BRAKES. TOPPED OFF RESERVOIR. INSPECTED FOR LEAKS, NONE. FOUND BRAKE PEDAL WAS FIRM. RETURNED ACFT TO SERVICE.Aug 6, 2014 · N731CY · Cessna P210N · Landing Gear Brake SystemSDR 2014FA0000361Points · brokenOWNER PERFORMED MAGNETO CHECK ON LT ENGINE AND FOUND MAGNETO INOPERABLE, UPON REMOVAL OF MAGNETO AND INSPECTION OF MAGNETO FOUND THE POINTS CONTACT BROKEN.Jun 4, 2014 · N21234 · Cessna 340A · Magneto/DistributorSDR HYIA20140425113Unknown · malfunctionedPILOT REPORTED LT ENG FUEL FLOW FLUCTUATES AROUND 100 PPH DURING CLIMB WITH FUEL PUMP, AUXILIARY, OFF. REPLACED LT ENG DRIVEN FUEL PUMP IAW CMI MANUAL & RELEASED FOR A FCF. THE FCF WAS UNSATISFACTORY. THE ACFT IS STILL IN MAINTENANCE. THIS REPORT WILL BE AMApr 22, 2014 · N406GA · Cessna 402C · Engine Fuel and ControlSDR HYIA20140422111Fuel Line · crackedPILOT REPORTED FUEL SMELL IN COCKPIT. FOUND A FUEL LINE FROM THE RT ENG FIREWALL TO THE RT FUEL BOWL LEAKING. THE LINE WAS REPLACED, OPERATIONAL & LEAK CHECK WERE PERFORMED WITH NO DEFECTS NOTED.Apr 20, 2014 · N2615G · Cessna 402C · Aircraft Fuel Distribution SystemSDR HYIA20140421108Heater · leakingDURING A TRAINING FLIGHT THE PILOT REPORTED A FUEL SMELL IN THE COCKPIT WHEN THE HEATER WAS ON. HE SHUT OFF THE HEATER & REPORTED THE DISCREPANCY TO MX. SECURED THE B NUT AT THE HEATER FUEL NOZZLE. OPERATIONAL & LEAK CHECKS WERE PERFORMED WITH NO DISCREPANCApr 18, 2014 · N466CA · Cessna 402C · Heating SystemSDR HYIA20140421109Unknown · odorPILOT REPORTED A FUEL ODOR IN THE COCKPIT. PERFORMED A FUEL PRESSURE TEST & NO DEFECTS WERE NOTED, NO ACTION TAKEN.Apr 18, 2014 · N223PB · Cessna 402C · Air Distribution SystemSDR 2013FA0000470Pin · brokenNOSE GEAR COLLASPED ON LANDING ROLL OUT. THERE ARE 2 PINS INSTALLED IN THE END OF THE NOSE GEAR ACTUATOR BEARING END. THE DOWN LOCK HOOKS ENGAGE ON THESE 2 PINS IN THE DOWN POSITION. THESE PINS ARE HELD IN PLACE BY A ROLL PIN THROUGH THE BEARING END INTO A Aug 15, 2013 · N6328P · Cessna P210N · Nose/Tail Landing Gear Strut/AxleSDR C41R201307030001O-Ring · missingTROUBLESHOT ENGINE OIL CONSUMPTION AND LEAKAGE. FOUND OIL LEAK AFTER NUMEROUS ATTEMPTS TO NARROW OIL LEAK TO A CENTRAL LOCATION. DISCOVERED OIL LEAKING FROM AIR CONDITIONER COMPRESSOR ACCESSORY DRIVE PULLEY SHAFT. REMOVED DRIVE PULLEY AND GARLOCK SEAL AND DISCJul 3, 2013 · N1228 · Piper PA46310P · Turbine Engine Oil SystemSDR 2013FA0000280Mount · erodedDURING LT AND RT ENGINE CHANGE THE LT AND RT ENGINE MOUNT TRUSSES WERE INSPECTED. SEVERE HEAT EROSION WAS FOUND ON THE LT BEAM BELOW THE FWD INDUCTION AIR BOX MOUNT BRACKET. THIS AREA IS NEAR THE LT EXHAUST ELBOW. BOTH MOUNTS SHOW THE SAME AMOUNT OF EROSIONApr 10, 2013 · N58LP · Beech 58P · Engine Mount SectionSDR 2013FA0000181Hose · leakingFIRST GROUND RUN REVEALED A LEAKING OIL PRESSURE TO WASTGATE HOSE OR FITTING. REPLACED FITTING IN ENGINE WITH NEW STEEL FITTING. SECOND GROUND RUN, OIL LEAKED FROM HOSE AGAIN. AFTER SLIGHT ADDITIONAL TORQUE APPLIED AND THIRD GROUND RUN, THE HOSE WAS REPLACEDMar 20, 2013 · N732JJ · Cessna T210L · Reciprocating Engine Oil SystemSDR HYIA20130320001Pump · malfunctionedFLIGHT CREW REPORTED THAT PRIOR TO TAKEOFF ALL INDICATIONS WERE NORMAL. SHORTLY AFTER TAKEOFF WHILE CLIMBING, THE CREW REPORTED THAT THE RT ENGINE SURGED AND THEN BEGAN TO LOSE POWER, AT WHICH POINT THE CREW NOTICED A SPIKE IN FUEL FLOW (295 PPH). CREW SHUTOFMar 18, 2013 · N660CA · Cessna 402C · Engine Fuel PumpSDR 2013FA0000096Check Valve · wornDURING GROUND LEAK CHECK AND PRESSURE CHECK OF DEICE BOOT SYS, FOUND LT AND RT CHECK VALVES INOPERATIVE. REMOVE AND INSPECTED CHECK VALVES. FOUND VALVES WORN AND MISSING INTERNAL PARTS. NORMAL OPERATIONAL CHECK OF THE DEICE BOOT SYS DOES NOT INDICATE AND MAFeb 1, 2013 · N959TX · Cessna 414A · Airfoil Anti/De-ice SystemSDR HYIA20120118002Governor · inoperativePILOT REPORTED THAT WHEN REDUCING POWER WHILE TRANSITIONING FROM CLIMB TO CRUISE, THE LT ENGINE PROPELLER RPM STAYED AT FULL RPM AND WOULD NOT REDUCE. THE PILOT ELECTED TO RETURN TO THE DEPARTURE AIRPORT. AFTER MX INSPECTION, THE DISCREPANCY WAS UNABLE TO BE Jan 16, 2013 · N409BK · Cessna 402C · Propeller GovernorSDR HYIA20121221001Governor · overspeedPILOT REPORTED THAT ON CLIMBOUT, THE RT PROP BECAME UNCONTROLLABLE AND WOULD OVERSPEED. THE PILOT ELECTED TO RETURN TO THE DEPARTURE AIRPORT. UPON MX INSPECTION, THE RT PROP AND PROP GOVERNOR WERE REPLACED IAW MM CHAPTER 61. THE PROP OPS AND LEAK CHECKED GODec 20, 2012 · N258PB · Cessna 402C · Propeller GovernorSDR 2012FA0000803Mount · crackedDURING ROUTINE INSPECTION NOTICED LT ENGINE OIL LEAK. REMOVED LT ALTERNATOR AND FOUND 4" CRACK AFT SECTION OF ALTERNATOR MOUTING FLANGE TO BASE OF NR 5 CYLINDER. PERFORMED DYE PENETRANT INSPECTION CRACK BECAME MORE VISIABLE.Dec 6, 2012 · N8840K · Cessna 414A · Electrical Power SystemSDR 2012FA0000701Fitting · corrodedDURING NEW ACFT CONFORMITY INSPECTION, IT WAS NOTED THAT THE LT UPPER FORWARD FUSELAGE FITTING WAS CORRODED. THE DETERMINED CORRECTIVE ACTION WAS TO REMOVE AND REPLACE WITH NEW PART. REPAIRS ARE ONGOING.Oct 17, 2012 · N810BW · Cessna 402C · Fuselage Miscellaneous StructureSDR HYIA20120904005Bolt · failedPILOT REPORTED THAT WHILE TAXIING, A DISCREPANCY WAS NOTED ON THE LT MAIN. ON INSPECTION, IT WAS DISCOVERED THAT THE LT MLG TORGUE LINK CENTER BOLT HAD COME APART. THE TORQUE LINK WAS REASSEMBLED WITH NEW HARDWARE.Sep 1, 2012 · N258PB · Cessna 402C · Main Landing GearSDR HYIA20120904001Hsi · failedDURING CRUISE, THE PILOT NOTED A THE ODOR OF SMOKE IN THE COCKPIT. AN UNSCHEDULED LANDING WAS MADE. THE PROBLEM WAS TROUBLESHOT TO A PICK UP IN THE HSI. THE HSI WAS R & R.Aug 29, 2012 · N524CA · Cessna 402C · Attitude and Direction Data SystemSDR M7JA201207300001Oil System · low pressureDECREASING OIL PRESSURE AND INCREASING OIL TEMP.Jul 23, 2012 · N7100F · Cessna 402CESSNA · Engine Oil Indicating SystemSDR 2012FA0000657Fuel Cell · debondedFLOATS AND FUEL CELLS, NEWLY MFG INBD L/E TANK , REPLACES OEM CELL PN 60-921057-3. NEWLY INSTALLED 1-6-12. LOW POINT DRAIN NIPPLE INTERNAL REINFORCEMENT DEBONDED, ALLOWING COMPLETE DRAINING OF LT WING FUEL LOAD. ACFT WAS ON GROUND AT TIME OF INCIDENT. RECOJul 18, 2012 · N3864U · Beech 58P · Fuel StorageSDR HYIA20120708002Hsi · inoperativeSHORTLY AFTER TAKEOFF, THE PILOT REPORTED THAT THEIR HSI WAS INOPERATIVE WHICH WAS ACCOMPANIED BY A SMOKE ODOR IN THE COCKPIT AND ELECTED TO RETURN FOR A LANDING. UPON INSPECTION AND CONFIRMATION BY MX, THE HSI WAS SUBSEQUENTLY REPLACED AND THE ACFT WAS RELEAJul 8, 2012 · N1361G · Cessna 402C · Directional Gyro and Indicating SystemSDR C41R201201240101Master Cylinder · damagedON LANDING ROLLOUT, PILOT HAD NO LT BRAKE. MX REMOVED LT MASTER CYLINDER AND DISCOVERED MASTER CYLINDER END GLAND HAD UNSCREWED ALL BUT 2 THREADS CAUSING FLUID AND PRESSURE LOSS FROM MASTER CYLINDER. REPLACED INTERNAL SEALS AND REASSEMBLED. REINSTALLED AND Jan 23, 2012 · N1228 · Piper PA46310P · Master Cylinder/Brake ValveSDR GNB2011F00001Web · crackedCRACKS FOUND FOR/AFT AREA PREVIOUSLY ADDRESSED IN MEB 84-12. REPAIR CONDUCTED IAW 8110-3 FAA APPROVED DATA, REF 135415A(14).Aug 24, 2011 · N57PB · Cessna 402C · Aircraft StructuresSDR 2011FA0000269Leg Assy · brokenACFT LANDED WITH NOSE LANDING GEAR IN THE UNLOCKED POSITION. THE PILOT REPORTED ON TAKEOFF THAT THE ACFT HAD A SEVERE VIBRATION AT APPROX 85 KNT, CONTINUED FLIGHT AND A SECOND ACFT VERIFIED THAT THE NLG WAS "FLOPPING AROUND", CONTINUED THE FLIGHT TO BURN OFF Mar 31, 2011 · N6752X · Beech 58P · Nose/Tail Landing GearSDR HYIA769EALFTMAINLine · defectiveCREW REPORTED, ON FINAL APPROACH, LANDING GEAR DOWNLOCK LIGHTS FAILED TO ILLUMINATE. WITH GEAR SELECTED DOWN, BOTH HYD FLOW WARNING LIGHTS CAME ON STEADY. CREW ELECTED TO RETURN TO ORIGINAL DEPARTURE FIELD. EMERGENCY DECLARED, PERFORMED EMERGENCY GEAR EXTENSMar 19, 2011 · N769EA · Cessna 402C · Landing Gear Retraction/Extension SystemSDR XGN2011F00005Cylinder Head · crackedNR 1 CYLINDER CRACKED BETWEEN THE FINS AFT OF THE FUEL INJECTOR BY THE INTAKE VALVE AND WAS LEAKING FUEL. THIS CYLINDER, THECYLINDER HEAD WAS MFG WITH THE METAL THICKNESS AROUND THE INTAKE VALVE AREA TOO THIN. HAVE HAD OVER 250 FAILURES OF THESE MFG CYLINDERJan 18, 2011 · N4165G · Cessna 402B · Reciprocating Engine Cylinder SectionSDR XGN2011F00006Cylinder Head · crackedNR 2 CYLINDER CRACKED BETWEEN THE FINS AFT OF THE FUEL INJECTOR BY THE INTAKE VALVE AND WAS LEAKING FUEL. THIS CYLINDER, THECYLINDER HEAD WAS MFG WITH THE METAL THICKNESS AROUND THE INTAKE VALVE AREA TOO THIN. HAVE HAD OVER 250 FAILURES OF THESE MFG CYLINDERJan 18, 2011 · N4165G · Cessna 402B · Reciprocating Engine Cylinder SectionSDR HYIA6879RHTRIgnition Unit · shortedCREW REPORTED, CABIN HEATER INOPERATIVE DURING FLIGHT. 20 MINUTES PRIOR TO REACHING FINAL DESTINATION, CREW REPORTED ODOR OF SOMETHING MELTING OR SMOLDERING. HEATER WAS TURNED OFF, AND HEATER FUEL SOURCE WAS TURNED OFF ALSO. AFTER A FEW MINUTES, ODOR WENT AWAJan 3, 2011 · N6879R · Cessna 402C · Heating SystemSDR 2011FA0000039Mount · damagedUPON REMOVAL, AN INSPECTION OF THE MOUNT WAS PERFORMED. DAMAGE WAS FOUND ON THE INBD MAIN SUPPORT CHANNEL. APPROX 10-12 INCHES FWD OF WHERE THE MOUNT ATTACHES TO THE FIREWALL. DAMAGE WAS ON THE INSIDE UPPER PART OF CHANNEL WITH A GROVE WORN APPROX .2500" INJan 3, 2011 · N79AP · Beech 58P · Engine Mount SectionSDR HYIA6879RDEICEDeice System · malfunctionedCREW REPORTED, AT CRUISE ALTITUDE, ACFT BEGAN ENCOUNTERING ICING CONDITIONS. WING AND STABILIZER DEICE BOOTS FAILED TO REMOVE ICE. CREW REPORTED SURFACE DEICE SYS AS INOPERATIVE ALTHOUGH SYS HAD CHECKED NORMAL EARLIER IN THE DAY. SEVERAL ATTEMPTS AT CHANGING Dec 13, 2010 · N6879R · Cessna 402C · Airfoil Anti/De-ice System
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