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 HEEA087274Bleed Valve · inoperativeBLEED VALVE PRODUCING HIGH TOT. TO BE SENT TO VENDOR FOR REPAIR.Jun 11, 2003 · N723PH · Bell 407 · Compressor Bleed ValveSDR HEEA087288Idler Assy · bindingMAIN ROTOR CONTROL IDLER ASSY BEARINGS BINDING. REPAIRED.Jun 11, 2003 · N501PH · Bell 407 · Main Rotor ControlSDR HEEA087289Washer · debondedBUFFER WASHER DISBONDED. TO BE SENT TO MFG.Jun 11, 2003 · N510PH · Bell 407 · Main Rotor ControlSDR HEEA087290Idler Assy · wornBELLCRANK HOUSING WORN/BEARING ROUGH. TO BE SENT TO MFG.Jun 11, 2003 · N8595X · Bell 407 · Main Rotor ControlSDR HEEA087291Bumper Block · debondedRUBBER BUMPER UNBONDED FROM BELLCRANK. TO BE SENT TO MFG.Jun 11, 2003 · N8595X · Bell 407 · Main Rotor ControlSDR HEEA087292Bolt · elongatedLONG TUBE BOLT HOLE OUT OF ROUND. TO BE SENT TO MFG.Jun 11, 2003 · N510PH · Bell 407 · Main Rotor ControlSDR HEEA087295Cone Seat · corrodedCONE SEAT HAS CORROSION AROUND CENTER LINE. TO BE SENT TO MFG.Jun 11, 2003 · N8595X · Bell 407 · Main Rotor HeadSDR HEEA087833Bracket · brokenSEAT BRACKETS BROKEN. REPLACED WITH SERVICEABLE PART.Jun 9, 2003 · N724PH · Bell 407 · Passenger Compartment EquipmentSDR HEEA087836Filter · bypassingOIL FILTER BYPASS BUTTON POPPING. REPLACED WITH SERVICEABLE PART.Jun 7, 2003 · N612PH · Bell 407 · Engine Oil Storage (Airframe Furnished)SDR HEEA086983Nozzle · bentFUEL NOZZEL BENT. SCRAPPED.Jun 3, 2003 · N494PH · Bell 407 · Fuel Injector NozzleSDR HEEA086984Nozzle · bentENGINE FUEL NOZZEL BENT. SCRAPPED.Jun 3, 2003 · N612PH · Bell 407 · Fuel Injector NozzleSDR HEEA086985Bleed Valve · malfunctionedBLEED VALVE PRODUCING HIGH MGT AT CRUISE. REPLACED.Jun 3, 2003 · N491PH · Bell 407 · Compressor Bleed ValveSDR HEEA086986Bleed Valve · inoperativeBLEED VALVE PRODUCING LOW POWER. REPLACED.Jun 3, 2003 · Bell 407 · Compressor Bleed ValveSDR HEEA086987Bleed Valve · inoperativeBLEED VALVE PRODUCING HIGH MGT. REPLACED.Jun 3, 2003 · N499PH · Bell 407 · Compressor Bleed ValveSDR HEEA086989Bleed Valve · inoperativeBLEED VALVE PRODUCING HIGH MGT. REPLACED.Jun 3, 2003 · N496PH · Bell 407 · Compressor Bleed ValveSDR HEEA086990Bleed Valve · inoperativeBLEED VALVE PRODUCING HIGH TOT. REPLACED.Jun 3, 2003 · N407PH · Bell 407 · Compressor Bleed ValveSDR HEEA086991Bleed Valve · inoperativeBLEED VALVE PRODUCING HIGH TOT. REPLACED.Jun 3, 2003 · N612PH · Bell 407 · Compressor Bleed ValveSDR HEEA086992Bleed Valve · looseBLEED VALVE BODY EXCESSIVELY LOOSE. REPLACED.Jun 3, 2003 · N494PH · Bell 407 · Compressor Bleed ValveSDR HEEA086993Bleed Valve · inoperativeBLEED VALVE PRODUCING HIGH TOT. REPLACED.Jun 3, 2003 · N723PH · Bell 407 · Compressor Bleed ValveSDR HEEA086994Bleed Valve · malfunctionedANTI ICE LIGHT ILLUMINATED IN FLIGHT. REPLACED.Jun 3, 2003 · N406PH · Bell 407 · Compressor Bleed ValveSDR HEEA086995Valve · stuckVALVE ASSY STUCK IN OPEN POSITION. REPLACED.Jun 3, 2003 · N495PH · Bell 407 · Fuel Controlling SystemSDR CA030523001Stud · cracked(CAN) CRACKS FOUND AT OVERHAUL ON MAIN ROTOR HEAD.May 22, 2003 · Bell 407 · Main Rotor HeadSDR 2003FA0000560Bearing · loosePILOT FOUND UPPER END OF BEARING ASSEMBLY LOOSE ON PRE-FLIGHT. UPON INSPECTION BY MECHANIC FOUND THE RUBBER AROUND UPPER BEARING CRACKED AND BEARING CRACKED AND BEARING HOUSING HAD AXIAL PLAY.May 19, 2003 · N57HK · Bell 407 · Main Rotor HeadSDR 2003FA0000561Relay · failedPILOT REPORTED START LIGHT WOULD NOT COME ON AND AIRCRAFT WAS UNABLE TO BE STARTED. TALKED TO PRODUCT SUPPORT AT MFG, STATED SOME 1K1 RELAYS WITHOUT A T STAMPED ON BOTTOM HAD A HIGH FAIL RATE. REPLACED RELAY WITH NEW RELAY STAMPED WITH T.May 19, 2003 · N57HK · Bell 407 · Engine StarterSDR ALG2003F00061Pressure Switch · failedUPON TAXING OUT, THE TRANSMISSION CHIP LIGHT ILLUMINATED. THE PILOT RETURNED TO THE PAD AND LANDED AS SOON AS POSSIBLE. ON SHUT DOWN WHILE TURNING OFF FUEL BOOST PUMP CIRCUIT BREAKER SWITCHES, THE LEFT TRANSFER PUMP LIGHT DID NOT ILLUMINATE. THE MECHANIC REMay 1, 2003 · N627AL · Bell 407 · Rotor Drive Indicating SystemSDR AUS20030448Bearing · worn(AUS) TAIL ROTOR DRIVESHAFT BEARING WORN AND ROUGH IN OPERATION.BEARING GREASE EXPELLED. GREASE WAS DISCOLORED.Apr 25, 2003 · Bell 407 · Tail Rotor Drive ShaftSDR ALGA086242Bearing · roughFOUND BEARINGS ROUGH AND RATCHETING.Apr 23, 2003 · N607AL · Bell 407 · Main Rotor Mast/SwashplateSDR ALGA086243Bearing · defectiveFOUND BEARING DEFECTIVE, EXCESSIVE PLAY AND ROUGH/RATCHETING.Apr 23, 2003 · N577AL · Bell 407 · Main Rotor HeadSDR ALGA086244Bearing · wornFOUND BEARING TO BE WORN AND RATCHETING.Apr 23, 2003 · N627AL · Bell 407 · Main Rotor HeadSDR ALGA086247Bearing · wornFOUND UNIVERSAL BEARING WORN AND ROUGH.Apr 23, 2003 · N587AL · Bell 407 · Main Rotor HeadSDR ALGA086245Bearing · wornFOUND BEARING WORN AND RATCHETING. BEARING REPLACED BY (FIELD) MAINT.Apr 23, 2003 · N627AL · Bell 407 · Main Rotor HeadSDR ALGA086246Bearing · seizedFOUND BEARING WORN, RATCHETING AND SEIZED IN SMALL ARC OF TRAVEL. BEARING REPLACED BY (FIELD) MAINT.Apr 23, 2003 · N617AL · Bell 407 · Main Rotor HeadSDR 2003FA0000414Combust Chamber · crackedOUTER COMBUSTION CAN CRACKED 180 DEGREES AROUND FUEL NOZZLE WELD. PRIOR TO CRACK THE ENGINE WAS RATED AS A +22 MGT. THE ENGINE WAS -6 MGT WHEN CRACK WAS DISCOVERED. THE CRACK IS NOT VISIBLE TO THE PILOT DURING PREFLIGHT. AN INSPECTION MIRROR IS REQUIRED TO SEApr 14, 2003 · N52AZ · Bell 407 · Turbine Engine Combustion SectionSDR ALGA085884Pinion Gear · spalledDUE TO IMPROPER MESHING OF GEARS, PINION GEAR HAD EXCESSIVE SPALLING ON GEAR TEETH. REMOVED AND REPLACED.Apr 1, 2003 · N527AL · Bell 407 · Main Rotor GearboxSDR ALGA085885Gear · defectiveREMOVED PTO GEAR IAW EXTEX MANDATORY BULLETIN NR T-075 REMOVED AND REPLACED.Apr 1, 2003 · N527AL · Bell 407 · Accessory GearboxesSDR CA030318019Stud · cracked(CAN) TYPICAL CRACK FOUND AT OVERHAUL OF MAIN ROTOR HEAD.Mar 18, 2003 · Bell 407 · Main Rotor HeadSDR ALGA084684Bearing · spalledFOUND #3 BEARING SEPARATOR MISSING. BEARING FAILURE CAUSED METAL IN OIL.Feb 21, 2003 · N477AL · Bell 407 · Accessory GearboxesSDR ALGA084685Bearing · spalledFOUND NR 4 BEARING SEPARATOR BROKEN IN PIECES. BEARING FAILURE CAUSED METAL IN OIL.Feb 21, 2003 · N477AL · Bell 407 · Accessory GearboxesSDR ALGA084686Pinion Gear · wornFOUND PINION GEARS SHOWING HEAVY WEAR ON DRIVE SIDE. THIS IS A REOCCURRING EVENT.Feb 21, 2003 · N547AL · Bell 407 · Accessory GearboxesSDR ALGA084128Coupling · gougedFOUND GOUGES ON CROWNS OF SPLINES OF N1 COUPLING, NEAR ADAPTER MATING SURFACE.Feb 12, 2003 · Clark 1000CLARK · Engine (Turbine/Turboprop)SDR ALG2003F00025Fadec · failedDURING FLIGHT, FIVE MILES FROM DESTINATION PLATFORM, ENGINE CHIP LIGHT ILLUMINATED, DURING FINAL APPROACH TO THE PLATFORM APPROXIMATELY 75 TO 100 FEET THE FADEC FAULT, FADEC MANUAL, FADEC FAIL, RESTART FAULT AND AUTO RELIGHT ILLUMINATED WITH FADEC FAIL AUDIO AFeb 10, 2003 · N477AL · Bell 407 · Fuel Controlling SystemSDR ALGA084097Combust Chamber · crackedCRACKED. EXCESSIVE CORROSION ON ARMPIT AT PATCH AREA, POSSIBLY CAUSED BY BRAZE FILLER MATERIAL. CRACK FOLLOWS WELD SEAM AND EXTENDS INTO PATCH. SCRAPPED PART. HOLDING FOR FINAL DISPOSITION.Feb 7, 2003 · N408AL · Bell 407 · Turbine Engine Combustion SectionSDR ALG2003F00022Line · leakingDURING POST FLIGHT. DURING POST FLIGHT PILOT NOTICED EXCESSIVE AMOUNT OF RESIDUAL OIL ON THE LEFT SIDE OF THE FUSELAGE, THE MECHANIC FOUND THE T/R HYDRAULIC RETURN LINE (B) NUT WAS CRACKED, HE REMOVED AND REPLACED THE LINE. AIRCRAFT WAS LEAK CHECKED AND RETUJan 16, 2003 · N607AL · Bell 407 · Hydraulic System, MainSDR ALG2003F0218Channel · crackedDURING DAILY INSPECTION, 3 INCH CRACK IN RADIUS OF CHANNEL, WAS FOUND. CRACK STARTS BOTTOM OF CHANNEL AND GOES UP 3 INCHES JUST ABOVE RECEPTACLE DOUBLER. C/A: INSTALL STAINLESS STEEL DOUBLER.Jan 16, 2003 · N617AL · Bell 407 · Nacelle/Pylon, Bulkhead/FirewallSDR HEEA083745Nozzle · bentENGINE NOZZLE BENT. SCRAPPED.Jan 15, 2003 · N494PH · Bell 407 · Turbine SectionSDR HEEA083770Engine · overspeedENGINE OVERSPEED. REPLACED WITH SERVICEABLE ENGINE.Jan 15, 2003 · N490PH · Bell 407 · Engine (Turbine/Turboprop)SDR HEEA083771Engine · making metalENGINE MAKING METAL. REPLACED WITH SERVICEABLE ENGINE.Jan 15, 2003 · N404PH · Bell 407 · Engine (Turbine/Turboprop)SDR HEEA083772Engine · making metalENGINE MAKING METAL. REPLACED WITH SERVICEABLE ENGINE.Jan 15, 2003 · N501PH · Bell 407 · Engine (Turbine/Turboprop)SDR HEEA083773Engine · damagedENGINE HAS A HOLE IN LEFT HAND COMPRESSOR ARM PIT. REPLACED WITH SERVICEABLE ENGINE.Jan 15, 2003 · N498PH · Bell 407 · Turbine Engine Compressor SectionSDR HEEA083547Clip · corrodedENGINE INNER CLIP RUSTED. SCRAPPED.Jan 14, 2003 · N467PH · Bell 407 · Engine (Turbine/Turboprop)
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