Allison 250-C47B

Service difficulty reports · 1,403

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 = '250C47B'
  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 HEEA083548Clip · corrodedENGINE OUTER CLIP RUSTED. SCRAPPED.Jan 14, 2003 · N467PH · Bell 407 · Engine (Turbine/Turboprop)SDR HEEA083549Clip · corrodedENGINE OUTER CLIP RUSTED. SCRAPPED.Jan 14, 2003 · N467PH · Bell 407 · Engine (Turbine/Turboprop)SDR HEEA083644Valve · stickingBURNER DRAIN VALVE STICKING. REPAIRED.Jan 14, 2003 · N498PH · Bell 407 · Turbine Engine Combustion SectionSDR HEEA083645Housing · damagedFLUCTUATING OIL PRESSURE. REPAIRED.Jan 14, 2003 · N467PH · Bell 407 · Turbine Engine Oil SystemSDR HEEA083646Valve · leakingVALVE LEAKS DURING ENGINE START UP. REPAIRED.Jan 14, 2003 · N402PH · Bell 407 · Engine Anti-Icing SystemSDR ALG2003F00012Transducer · malfunctionedON TAKEOFF, PILOT NOTICED TORQUE EXCEEDED THE LIMIT WITH LOW POWER SETTINGS, HE RETURNED TO FREEPORT. THE MECHANIC CHECK THE ECU WITH MAINTENANCE TERMINAL. NO FAULTS WERE RECORDED, CHANGED THE TORQUE TRANSDUCER AND AIRCRAFT WAS RETURNED TO SERVICE.Dec 15, 2002 · N405AL · Bell 407 · Engine BMEP/Torque IndicatingSDR ALG2003F0000FChannel · brokenFOUND ON A DAILY INSPECTION 12/15/2002. CHANNEL HAS 12 INCHES AND 1 PIECE BROKEN OFF APPROXIMATELY 4 INCH. FABRICATE CHANNEL FROM THICKER MATERIAL.Dec 15, 2002 · N58236 · Bell 407 · Fuselage Miscellaneous StructureSDR ALG2003F00028Engine · failedDURING CRUISE FLIGHT, ENGINE CHIP LIGHT ILLUMINATED DURING CRUISE FLIGHT. THE PILOT FOLLOWED THE EMERGENCY CHECKLIST AND UPON LANDING THE MECHANIC REMOVED AND REPLACED THE TURBINE AND GEARBOX. AIRCRAFT WAS THEN RETURNED TO SERVICE.Dec 14, 2002 · N627AL · Bell 407 · Engine (Turbine/Turboprop)SDR ALG2003F00013Chip Detector · dirtySHORTLY AFTER TAKEOFF, AFTER DROPPING THE PASSENGERS ON THE SUPER TANKER, THE PILOT TOOK OFF AND WAS ENROUTE, THE TRANSMISSION CHIP LIGHT ILLUMINATED, THE PILOT NOTIFIED VENICE BASE BY RADIO. UPON LANDING THE MECHANIC REMOVED THE MAST BEARING CHIP PLUG AND FODec 13, 2002 · N557AL · Bell 407 · Main Rotor GearboxSDR ALG2003F00007Frame · crackedDISCOVERED WHEN FRAME WAS REMOVED TO REMOVE AND REPLACE RIVETS ON TAILBOOM ATTACH FITTING. (RIGHT UPPER FITTING) IT HAS BECOME GOOD PRACTICE TO CHECK THIS AREA BECAUSE OF PAST PROBLEMS. THE FRAME HAS BEEN FOUND TO CRACK IN THIS SAME AREA ON ALL AIRCRAFT THATDec 8, 2002 · N577AL · Bell 407 · Fuselage Main, FrameSDR ALG2003F00019Door · crackedLT ENGINE BAY DOOR LOWER RECTANGLE SCREEN IS CRACKED AND UPPER 2ND FRONT FORWARD SQUARE SCREEN CRACKED. LT AND RT ENGINE BAY DOORS. CHAFING OCCURRING ON LOWER AND FORWARD EDGE OF DOORS. LATCHES EXCESSIVE WEAR. FASTENERS ON FORWARD AFT EDGE HAS EXCESSIVE WEDec 3, 2002 · N577AL · Bell 407 · DoorsSDR ALG2003F218Skin · crackedDURING DAILY INSPECTION, CRACKS, CORROSION, BROKEN SPOT WELDS, HINGES WORN OUT. SKIN CORROSION AT SPOT WELDS BECAUSE OF NON-ALCLAD MATERIAL. HEAVIER GAUGE MATERIAL ON STRINGERS NEEDED.Dec 3, 2002 · N577AL · Bell 407 · Fuselage Main, Plate/SkinSDR CA030108003Disc Pack · cracked(CAN) ONE TAIL ROTOR DISC CRACKED. TOTAL TEN DISC IN PACK.Dec 1, 2002 · Bell 407 · Tail Rotor Drive ShaftSDR ALG2003F0000AStringer · crackedIN FOR C/W ASB 4070254, WEIGHT OF CARBON FIBER DOORS. CRACK IS OCCURING ON FORWARD LEFT STRINGER AT CLIP ANGLE AND STRINGER RIVETED LOCATION, WEIGHT OF DOORS AND VIBRATION. HEAVIER GAUGE STRINGER MATERIAL TO ACCOMODATE WEIGHT OF DOORS.Nov 11, 2002 · N437AL · Bell 407 · Landing Gear DoorsSDR ALG2003F000IStringer · cracked11/11/02 IN FOR C/W ASB 407-02-54. WEIGHT OF CARBON FIBER DOORS. STRINGER, CRACK IS OCCURRING ON FORWARD LEFT STRINGER AT CLIP ANGLE AND STRINGER RIVETED LOCATION, WEIGHT OF DOORS AND VIBRATION. HEAVIER GAUGE STRINGER MATERIAL TO ACCOMMODATE WEIGHT OF DOORSNov 11, 2002 · N437AL · Bell 407 · Fuselage Main, Longeron/StringerSDR CA021104001Seal · misinstalled(CAN) SWASHPLATE BEARING SEAL SHALL BE INSTALLED WITH SEALANT APPLIED ON MATING SURFACES. SEALANT WAS NOT APPLIED ON ALL MATING SURFACES CAUSING THE SEAL SPIN IN THE CAP ASSEMBLY TO LEAK GREASE.Oct 30, 2002 · Bell 407 · Main Rotor Mast/SwashplateSDR S642002F00000Bracket · crackedDURING AN ANNUAL INSPECTION THE MECHANIC PULLED DOWN ON THE CARGO HOOK AND THE LT HAND HARD POINT BRACKET FAILED. LEAVING THE CARGO HOOK BEAM SUPPORTED ONLY BY THE RIGHT BRACKET. SHOULD THIS BRACKET FAIL, DURING SLING WORK THE RT BRACKET WOULD NOT BE ABLE TOOct 18, 2002 · N407HS · Bell 407 · Cargo CompartmentsSDR ALG2003F00050Warning Light · illuminatedIN FLIGHT, FUEL TRANSFER LIGHT ILLUMINATED IN FLIGHT, FLIGHT WAS DIVERTED TO WD 70 AND DISCOVERED FUEL OF 148 LBS. THE PILOT CALLED HOUMA AND 35 GALLONS OF FUEL WAS FLOWN TO THE AIRCRAFT.Oct 4, 2002 · N457AL · Bell 407 · Fuel Indicating SystemSDR ALG2003F00020Blade · damagedWHILE HOVERING ONTO THE PARKING PAD, THE PILOT HEARD AN UNUSUAL SOUND FROM THE AIRCRAFT, UPON LANDING THE SUBSEQUENT INSPECTION REVEALED DAMAGE TO THE COMPRESSOR BLADE CAUSED BY A SMALL PIECE OF INTAKE SHELF INGESTED BY THE ENGINE. THE ENTIRE ENGINE WAS REMOVSep 27, 2002 · N577AL · Bell 407 · Turbine Engine Compressor SectionSDR IIF2002F00001Bearing · separatedELASTOMERIC PORTION OF BEARING COMPLETELY DEBONDED FROM BASE. FOUND AT ROUTINE INSPECTION. BEARING IS ONE OF A BATCH OF DEFECTIVE BEARINGS MANUFACTURED BEFORE 1998. RECOMMEND THAT BEARINGS BE BONDED WITH BETTER MATERIALS OR ADHESIVE.Aug 28, 2002 · N407JR · Bell 407 · Main Rotor HeadSDR 2002FA0001069Bearing · separatedELASTOMERIC PORTION OF BEARING COMPLETELY DEBONDED FROM BASE. FOUND AT ROUTINE INSPECTION. THIS BEARING IS ONE OF A BATCH OF DEFECTIVE BEARINGS MANUFACTURED BEFORE 1998. RECOMMEND THAT BEARING BE BONDED WITH BETTER MATERIAL OR ADHESIVE.Aug 28, 2002 · N407PR · Bell 407 · Main Rotor HeadSDR ALG2002F00065Shaft · wornSHAFT ON FREEWHEEL UNIT HAS WORN SPLINES BEYOND LIMITS.Aug 28, 2002 · N587AL · Bell 407 · Engine/Transmission CouplingSDR GFV2002F00000Duct · crackedEXHAUST DUCT CONTINUALLY CRACKS FROM THE FLANGE, RUNNING TO THE END OR OUTLET OF THE DUCT. DUCT ALSO EXHIBITS BLUING FROM EXCESS HEAT.Aug 15, 2002 · N613BP · Doug 600N · Engine Collector/Tailpipe/NozzleSDR ALG2003F000AStringer · brokenSTRINGERS BROKEN BY CENTER AND FORWARD HINGES.Aug 15, 2002 · N527AL · Bell 407 · Fuselage Main, Longeron/StringerSDR ALG2003F000BStringer · brokenSTRINGER BROKEN BY CENTER AND FORWARD HINGES.Aug 15, 2002 · N527AL · Bell 407 · Fuselage Main, Longeron/StringerSDR ALG2003F000CStringer · crackedSTRINGER CRACKED AND CORRODED BEYOND REPAIR.Aug 15, 2002 · N527AL · Bell 407 · Fuselage Main, KeelSDR ALG2003F000DStringer · crackedSTRINGER, CRACKED AND CORRODED BEYOND REPAIR.Aug 15, 2002 · N527AL · Bell 407 · Fuselage Main, Longeron/StringerSDR ALG2003F000EFrame · corrodedFRAME, CORRODED AND CRACKED BEYOND REPAIR.Aug 15, 2002 · N527AL · Bell 407 · Fuselage Main, FrameSDR ALG2003F000FFrame · crackedFRAME, CRACKED, CORRODED, NO REPAIRABLE.Aug 15, 2002 · N527AL · Bell 407 · Fuselage Main, FrameSDR ALG2003F000GFrame · crackedFRAME, CRACKED, CORRODED, NO REPAIRABLE.Aug 15, 2002 · N527AL · Bell 407 · Fuselage Main, FrameSDR ALG2003F000HFrame · crackedFRAME, CRACKED, CORRODED, NO REPAIRABLE.Aug 15, 2002 · N527AL · Bell 407 · Fuselage Main, FrameSDR CA020814004Case · mismanufactured(CAN) MAIN ROTOR GEARBOX HAS A CASTING FLAW IN CASE.Aug 13, 2002 · Bell 407 · Main Rotor GearboxSDR ALG2003D00032Blade · crackedDISCOVERED DURING ROUTINE INSPECTION. LEADING EDGE SHEATH CRACKED CHORDWISE AT STATION 132.Jul 31, 2002 · N557AL · Bell 407 · Main Rotor BladesSDR ALG2003F00070Bearing · failedDURING CRUISE FLIGHT THE PILOT FELT A SEVERE VIBRATION IN THE AIRFRAME AND PERFORMED A PRECAUTIONARY LANDING ON A NEARBY PLATFORM. FORWARD BEARING ON NR 2 TAILROTOR DRIVESHAFT BLOWER ASSEMBLY FAILED.Jul 22, 2002 · N547AL · Bell 407 · Tail Rotor Drive ShaftSDR ALG2003F00033Support Angle · crackedDURING DAILY INSPECTION, CRACKED IN RADIUS DUE TO POOR FIT. LEFT LOWER SUPPORT ANGLE FOR HORIZONTAL STABILIZER. TB 4070133 WAS CW AT THIS DATE.Jul 19, 2002 · N617AL · Bell 407 · Rotorcraft Tail BoomSDR 2002FA0000844Gearbox · mismanufacturedUPON INSPECTION BEFORE GEARBOX ASSEMBLY. SCAVENGE TUBE CUT OUT NOT WIDE ENOUGH, CAUSING TUBE TO RUB. 2 EACH STUDS NOT FULLY SEATED AT N1 PICKUP AREA. OIL PUMP INSERTS NOT CLEANED OUT. ASSURE PROPER MANUFACTURING AND INSPECTED BY QA BEFORE LEAVING FACTORY.Jul 1, 2002 · Bell 407 · Turbine Engine Reduction GearSDR HEEA080206Bleed Valve · failedENGINE HAD A SUDDEN INCREASE IN TOT CAUSING A LOW POWER ENGINE. REPLACED WITH SERVICEABLE BLEED VALVE.Jun 26, 2002 · N4999 · Bell 407 · Compressor Bleed ValveSDR HEEA080207Bleed Valve · failedHIGH TOT. REPLACED WITH SERVICEABLE BLEED VALVE.Jun 26, 2002 · N406PH · Bell 407 · Compressor Bleed ValveSDR HEEA080209Hmu · failedWHEN ADVANCING THE THROTTLE UP FROM IDLE, COMPRESSOR STALLS. TURNING ON ENGINE ANTI-ICE WILL CAUSE PROBLEM TO GO AWAY.Jun 26, 2002 · N3193E · Bell 407 · Fuel Controlling SystemSDR HEEA079915Fuel Control · malfunctionedENGINE NOT RESPONDING TO MOVEMENT IN ENG. TRIM MOTOR.Jun 25, 2002 · N4253S · Skrsky S76A · Fuel Controlling SystemSDR CA020702010Skin · cracked(CAN) CRACK IN TAILBOOM SKIN FOUND ON LEFT HAND SIDE EXTENDING FROM FORWARD RIVET ON UPPER LEFT HAND ANGLE SUPPORT P/N 407-023-800-117 TO NEXT RIVET UP ON TAILBOOM SKIN. TAILBOOM REMOVED FROM SERVICE AND IS BEING SHIPPED TO BELL HELICOPTERS FOR EVALUATION. REPJun 24, 2002 · Bell 407 · Rotorcraft Tail BoomSDR ALG2002F00053Gear · mismanufacturedENGINE WAS REMOVED DUE TO MAKING METAL. UPON DISASSEMBLY AND INSPECTION OF PARTS, FOUND T/M GEAR TEETH RADIUS ROUGH AND UNFINISHED MACHINING CAUSING PINION GEAR TO GALL. IMPROPER AND UNFINISHED MACHINING OF T/M GEAR CAUSING PINION GEAR TEETH TO GALL. ASSUREJun 18, 2002 · N7210 · Bell 407 · Turbine Engine Reduction GearSDR ALG2002F00051Bearing · failedBEARING FAILED IN FLIGHT. MAJOR BEARING FAILURE.Jun 13, 2002 · N647AL · Bell 407 · Tail Rotor Drive ShaftSDR HEEA079890Fuel Nozzle · failedFUEL NOZZLE FAILED BENCH CHECK.Jun 11, 2002 · N199CH · Skrsky S76A · Engine Fuel PumpSDR HEEA080085Liner · damagedCOMPRESSOR LINER DAMAGED PRODUCING TORQUE FLUCTUATIONS. REPLACED WITH SERVICEABLE PART.Jun 11, 2002 · N490PH · Bell 407 · Turbine Engine Compressor SectionSDR ALGA079855Gearshaft · galledDUE TO T/M JOURNAL SUPPORT STUDS BACKING OUT OF COVER AN UNUSUAL WEAR PATTERN OF SPALLING AND GALLING OCCURRED ON GEAR TEETH.Jun 10, 2002 · N687AL · Bell 407 · Turbine Engine Reduction GearSDR ALGA079856Shaft · looseFOUND T/M GEAR, BEARING JOURNAL SHAFT AND SUPPORT LOOSE IN COVER ASSEMBLY. FOUND ALL 4 STUDS ON JOURNAL SUPPORT PULLED OUT AND 1 EACH WITH NO THREADS LEFT IN WORN BORE. THIS ALLOWED GEAR TO WEAR IN AN UNUSUAL MANNER, WHICH COULD HAVE RESULTED IN A CATASTROPHJun 10, 2002 · N687AL · Bell 407 · Turbine Engine Reduction GearSDR HEEA080010Bleed Valve · failedTORQUE FLUCTUATION DURING CRUISE FLIGHT. REPLACED WITH SERVICEABLE BLEED VALVE.Jun 10, 2002 · N493PH · Bell 407 · Compressor Bleed ValveSDR HEEA080011Bleed Valve · failedENGINE HAS LOW POWER AND HIGH TOT. REPLACED WITH SERVICEABLE BLEED VALVE.Jun 10, 2002 · N496PH · Bell 407 · Compressor Bleed ValveSDR HEEA080012Bleed Valve · failedHIGH TOT. REPLACED WITH SERVICEABLE BLEED VALVE.Jun 10, 2002 · N8595X · Bell 407 · Compressor Bleed Valve
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