Allison 250-C20B

Service difficulty reports · 1,981

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 = '250C20B'
  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 AU990487Fitting · misrepairted(AUS) CENTER BOX SECTION STIFFENER AND FITTING INCORRECTLY REPAIRED. REPAIR DID NOT COMPLY WITH THE REPAIR SCHEME STATED IN BELL 206 STRUCTURAL REPAIR MANUAL. UNAPPROVED REPAIR.Apr 14, 1999 · Bell 206B3 · Fuselage Miscellaneous StructureSDR CA990927029Governor · failed(CAN) THE TURBINE GOVERNOR WAS REMOVED FOR N2 OVERSPEED (N2 GREATER THAN 114 PERCENT). THE UNIT WAS SENT TO A REPAIR FACILITY FOR TESTING.Apr 13, 1999 · Bell 206L · Turbine GovernorSDR CA990927030Fcu · failed(CAN) FCU SUSPECTED CAUSE FOR N2 OVERSPEED CONDITION.Apr 13, 1999 · Bell 206L · Fuel Control/Turbine EnginesSDR CA990927031Engine · overspeed(CAN) REPORTED OVERSPEED = 114 PERCENT.Apr 13, 1999 · Bell 206L · Engine (Turbine/Turboprop)SDR AU990332Line · broken(AUS) PC PIPE FROM COMPRESSOR SCROLL TO `TEE' FITTING FRACTURED AND BROKEN OFF AT THE BASE OF THE FLARE BELOW THE `B' NUT. THE ENGINE IS FITTED WITH A CECO FUEL SYSTEM.Apr 8, 1999 · Bell 206B3 · Fuel Controlling SystemSDR HEEA061770Governor · malfunctionedAT CRUISE FLIGHT, 80 PERCENT TORQUE, TORQUE OSCILLATES 20 PERCENT, WITH A CORRESPONDING TOT OSCILLATION. REPLACED WITH SERVICEABLE GOVERNOR.Apr 8, 1999 · N5005B · Bell 206L1 · Turbine GovernorSDR HEEA061771Fcu · leakingFUEL CONTROL LEAKING OUT START DERICH SHAFT AND BYPASS COVER. PERFORMED PRELIMINARY INSPECTION. TEST START DERICH FUNCTION AND FOUND NO LEAKAGE FROM THE SHAFT. BENCH TEST AND FOUND NO LEAKAGE FROM BYPASS COVER OR START DERICH WHEN TESTED ON THE FLOW BENCH. Apr 8, 1999 · N2772A · Bell 206L1 · Fuel Control/Turbine EnginesSDR HEEA061773Pump · wornPERFORMED SPLINE INSPECTION AND FOUND WORN DRIVE SPLINES FUEL PUMP.Apr 8, 1999 · N1076Y · Bell 206L1 · Engine Fuel PumpSDR 99ZZZX2843Servomotor · malfunctionedSERVOMOTOR DOES NOT OSCILLATE WHEN SWITCH IS IN ON POSITION. REF: MCN NR 24.Apr 5, 1999 · N2907T · Bolkms BO105S · Fuel Controlling SystemSDR HEEA061683Fcu · failedFUEL CONTROL CHANGED TO COMPLY WITH CEB-A-73-3102. AIRCRAFT FLEW 6.5 HOURS AND THE AIRCRAFT EXPERIENCED A HANG START. THE AIRCRAFT WAS TROUBLESHOT AND THE FUEL CONTROL WAS CHANGED. COMPLIED WITH CEB-A-73-3102, NEW SPRING INSTALLED. UPGRADED UNIT.Apr 5, 1999 · Bell 206L1 · Fuel Control/Turbine EnginesSDR 20000712SH031Filter · contaminatedUNIT WAS IN FOR FUNCTIONAL TEST ONLY. DISASSEMBLED UNIT FOR POSSIBLE FILTER CONTAMINATION AND FOUND 50 PERCENT OF FILTER COVERED WITH BLACK PARTICLES AND CHIPS OF METAL. (X)Apr 5, 1999 · N10VH · Bolkms BO105CBS · Fuel Injector NozzleSDR 20000713SH003Sprag Clutch · brokenNO INDICATION OF SPRAG FAILURE, NORMAL ENGINE AND ROTOR COAST DOWN ON SHUT DOWN. BROKEN SPRAG FOUND WHEN CLUTCH WAS DISASSEMBLED FOR 300-HOUR INSPECTION. (X)Apr 4, 1999 · N1109P · Hughes 369D · Engine/Transmission CouplingSDR HEEA061567Filter · malfunctionedFILTER FAILS BYPASS CHECK.Apr 2, 1999 · N22743 · Bell 206B3 · Turbine Engine Oil SystemSDR HEEA061590Filter Assembly · leaksFILTER ASSEMBLY LEAKS WITH NEW SEALS INSTALLED.Apr 2, 1999 · N911RS · Bolkms BO105CBS · Turbine Engine Oil SystemSDR HEEA061591Filter Assembly · malfunctionedFILTER ASSEMBLY WILL NOT BYPASS.Apr 2, 1999 · N54191 · Bolkms BO105S · Turbine Engine Oil SystemSDR HEEA061592Filter Assembly · malfunctionedFILTER ASSEMBLY WILL NOT BYPASS.Apr 2, 1999 · N135AE · Bolkms BO105S · Turbine Engine Oil SystemSDR CA990412001Switch · failed(CAN) ELT G-SWITCH FOUND TO BE U/S DURING ANNUAL RECERTIFICATION. ELT UNIT RETURNED TO MANUFACTURER FOR REPAIR.Mar 25, 1999 · Bell 206B · Emergency Locator BeaconSDR CA991007043Swashplate · vibration(CAN) WHEN MAINTENANCE RUNNING WITH BLADES OFF, A SEVERE STICK SHAKE (1.2 IPS) WAS NOTED. SWASHPLATE REPLACED AND SHAKE REDUCED TO 0.2 IPS.Mar 23, 1999 · Hughes 369D · Main Rotor Mast/SwashplateSDR ERAA061855Collector · mismanufacturedFOURTH TIP PATH AREA OUT OF ROUND ON EXHAUST COLLECTOR. UNDERSIZED.Mar 23, 1999 · N151EH · Bolkms BO105S · Turbine SectionSDR 99ZZZX1537Bleed Valve · corrodedBLEED VALVE CORRODED AND SHAFT BUSHING WORN. REMOVED AND REPLACED.Mar 22, 1999 · N8330P · Hughes 369E · Turbine Engine Compressor SectionSDR 99ZZZX1538Case Halves · crackedCASE LINING CRACKED AND CORRODED UNDER LINING. REMOVED AND REPLACED.Mar 22, 1999 · N8330P · Hughes 369E · Turbine Engine Compressor SectionSDR 99ZZZX1549Governor · malfunctionedGOVERNOR SURGES ABOVE 70 PSI TORQUE. ERRATIC BEEP RANGE. REMOVED AND REPLACED.Mar 22, 1999 · N1097J · Hughes 369D · Turbine GovernorSDR CA990330018Dampener · wrong part(CAN) SEVERAL UNAPPROVED PARTS WERE FOUND DURING DISASSEMBLY AT OVERHAUL OF STARTER/GENERATOR. A LUCAS BACKPLATE AND FRICTION RING WERE FOUND IN PLACE OF THE APC PARTS, BUT THERE WAS NO EVIDENCE OF FAILURE. CORRECT PARTS WERE PROCURED AND INSTALLED. IN ADDIMar 17, 1999 · Bell 206B · Starter-GeneratorSDR CA020405004Case · worn(CAN) LOSS OF POWER REPORTED DUE TO WORN VANES AND LIFTED PLASTIC.Mar 17, 1999 · Bell 206B · Turbine Engine Compressor SectionSDR CA991007039Nozzle · cracked(CAN) FUEL NOZZEL OUTER AIR SHROUD CRACKED WHEN RECEIVED FROM VENDOR.Mar 16, 1999 · Fuel Injector NozzleSDR ERAA061849Scroll · corrodedSCROLL ASSEMBLY WAS SENT AS EXCHANGE UNIT ON AERO PROPULSION JOB NR 6514. ASSEMBLY HAS EXCESSIVE CORROSION.Mar 11, 1999 · Turbine Engine Compressor SectionSDR CA990401004Folding Pin · broken(CAN) IT WAS NOTICED ON POST-FLIGHT INSPECTION THAT THE BOTTOM PART OF THE AFT GREEN M/R BLADE FOLDING PIN WAS HANGING DOWN LOWER THAN THE LEAD-LAG LINK. ALL PARTS OF THE PIN WERE STILL IN PLACE AND THE LEVER ARM WAS STILL HOLDING THE SELF-LOCKING NUT. NO VMar 10, 1999 · Hughes 369D · Main Rotor BladesSDR CA991007034Collective · failed(CAN) PLAY FOUND ON THE COLLECTIVE STICK IN THE THROTTLE MECHANISM WHICH CAUSED THE IDLE POSITION TO BE INCONSISTENT. UNIT WAS REPAIRED AND REINSTALLED.Mar 8, 1999 · Hughes 369D · Main Rotor ControlSDR CA990323004Strap Pack · cracked(CAN) STRAP PACK CRACKED IN AREA ADJACENT TO LEAD/LAG LINK ATTACHMENT. NO CRACKS ARE ALLOWED IN THIS AREA.Mar 5, 1999 · Hughes 369D · Main Rotor HeadSDR AU990346Pillow Block · cracked(AUS) MAIN ROTOR HEAD PILLOW BLOCKS CRACKED. BLOCKS WERE A NEW FIT ITEM AT HEAD OVERHAUL AND WERE CRACK TESTED PRIOR TO FITMENT.Mar 1, 1999 · Bell 206B3 · Main Rotor HeadSDR CA991007033Governor · failed(CAN) BLUE GREASE VISIBLE ON OUTER TURBINE GOVERNOR HOUSING. GOVERNOR WAS SLUGGISH EVEN WITH THE UNIT RIGGED ALL TO THE MAXIMUM. GOVERNOR REPLACED.Mar 1, 1999 · Hughes 369D · Turbine GovernorSDR 99ZZZX1353Governor · malfunctionedSURGING. REMOVED AND REPLACED. SENT FOR EVALUATION/REPAIR.Feb 19, 1999 · N5027P · Hughes 369D · Turbine GovernorSDR CA990223020Bearing · failed(CAN) DURING FLIGHT NR 2, ENGINE HAD A CHIP DETECTOR LIGHT. RESET WAS CARRIED OUT, BUT THE LIGHT CAME BACK ON. THE AIRCRAFT RETURNED TO BASE. ALL ENGINE PARAMETERS WERE NORMAL. POST-FLIGHT BOTH THE UPPER AN LOWER CHIP DETECTORS WERE REMOVED AND METAL CONTFeb 16, 1999 · Turbine Engine Reduction GearSDR CA990303002Engine · failed(CAN) THE PILOT WAS IN SLOW CRUISE WHEN THE ENGINE OUT LIGHT ACTIVATED. THE ENGINE HAD DECELLERATED TO FLIGHT IDLE. SINCE THE HELICOPTER WAS ONLY 300 FEET ABOVE GROUND, IT SUSTAINED BELLY DAMAGE ON THE ENSUING HARD LANDING.Feb 15, 1999 · Hughes 369D · Engine (Turbine/Turboprop)SDR CA990927028Bleed Valve · malfunctioned(CAN) BLEED VALVE NOT FUNCTIONING PROPERLY.Feb 15, 1999 · Hughes 369D · Compressor Bleed ValveSDR CA991027062Hose · leaking(CAN) FORWARD FUEL TANK VENT HOSE LEAKED SLIGHTLY WHEN FULL. THE MANUFACTURER DATE ON THE HOSE WAS 7-76.Feb 8, 1999 · Bell 206L · Fuel StorageSDR ERAA060600Wheel · pittedNR 2 WHEEL INSTALLED AND REMOVED FROM AIRCRAFT 9-14-99 DUE TO PITTS AND FLAKING ON BLADES.Feb 1, 1999 · N152EH · Bolkms BO105S · Turbine SectionSDR CA991007027Indicator · misinstalled(CAN) FUEL SHUT-OFF CABLE WAS HARD TO ACTUATE BECAUSE THE N1 AND TOT GAUGES WERE NOT INSTALLED CORRECTLY. GAUGES SUBSEQUENTLY INSTALLED CORRECTLY.Jan 30, 1999 · Hughes 369D · Instrument PanelSDR ERAA060596Nozzle Shield · crackedNR 1 NOZZLE SHIELD WITH ONLY 1673.6 HOURS SINCE NEW HAS A CRACKED DOME.Jan 29, 1999 · N152EH · Bolkms BO105S · Turbine SectionSDR CA990125005Link · cracked(CAN) LEAD/LAG LINK INSPECTION PER AD 95-03-13, LINKS FOUND CRACKED. REPLACED.Jan 14, 1999 · Hughes 369D · Main Rotor HeadSDR CA990115002Compressor · malfunctioned(CAN) PILOT REPORTED THERE WAS NO NOTICEABLE RISE IN TEMPERATURE ON NR 1 ENGINE DURING ANTI-ICE SYSTEM ACTIVATION. INVESTIGATION FOUND LINE (P/N 6876333) HAD FAILED. THIS IS THE SECOND FAILURE OF THAT LINE IN 55 HOURS OF OPERATION. THE FAULT WAS FOUND TO BEJan 10, 1999 · Turbine Engine Compressor SectionSDR CA990125018Gearbox · corroded(CAN) FOUND THREE AREAS OF DEEP CORROSION IN THE MAGNESIUM CASE NEAR THE UPPER GEARBOX MOUNTS.Jan 7, 1999 · Bolkms BO105C · Tail Rotor GearboxSDR 99ZZZX258Blade · damagedFIRST STAGE BLADES NEED DRESSED OUT. DRESSED BLADES, RETURNED TO SERVICE.Dec 22, 1998 · N5027P · Hughes 369D · Turbine Engine Compressor SectionSDR CA990125019Blade · cracked(CAN) THREE CRACKS IN THE SURFACE OF THE BLADE THRUST FACE. EACH APPROXIMATELY 1.5 INCHES TO 2 INCHES LONG. CRACK LOCATED ABOUT 2/3 OF THE DISTANCE OUT FROM THE BLADE ROOT.Dec 15, 1998 · Bolkms BO105C · Tail Rotor BladesSDR ERAA059960Nut · mismanufacturedNEW TIEBOLT NUT WOULD NOT STRETCH BEFORE REACHING MAX TORQUE.Dec 11, 1998 · N152EH · Bolkms BO105S · Turbine Engine Compressor SectionSDR 99ZZZX215Igniter · malfunctionedIGNITER SLOW TO FIRE ON COLD MORNINGS. REMOVED AND REPLACED.Dec 7, 1998 · N369AW · Hughes 369D · Spark Plug/IgniterSDR 98ZZZX4758Fuel Nozzle · failedDURING EXTERNAL LOAD OPS, ENGINE RPM WENT TO APPROXIMATELY 60 PERCENT N2. LOAD WAS DROPPED AND RPM CAME BACK TO 95 PERCENT. AIRCRAFT WAS FLOWN APPROXIMATELY 1/4 MILES TO LZ, BUT WOULD NOT HOLD RPM TO HOVER. FOUND FILTER IN FUEL NOZZLE COLLAPSED.Nov 17, 1998 · N67PJ · Bell 206B3 · Turbine SectionSDR CA981125094Shaft · failed(CAN) FORWARD SHORT DRIVE SHAFT HAD PLAY IN THE COUPLING AT THE RIVETED END.Nov 16, 1998 · Bolkms BO105C · Tail Rotor Drive ShaftSDR CA981123022Cable · damaged(CAN) THREE STRANDS OF SLING CABLE BROKEN BELOW UPPER ATTACHMENT SWAGING.Nov 12, 1998 · Bolkms BO105C · Aerial Tow EquipmentSDR CA981125026Tube · broken(CAN) DURING FLIGHT, THE PILOT SELECTED NR 1 ENGINE ANTI-ICE AND THERE WAS NO TEMPERATURE RISE ON THE NR 1 ITT TEMPERATURE INDICATOR. ON RETURN TO BASE, INSPECTION FOUND THE ANTI-ICE TUBE WAS BROKEN JUST AFT OF THE FLARE. THE ANTI-ICE TUBE WAS REPLACED AND TNov 10, 1998 · Engine Anti-Icing System
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