Allison 250-C30

Service difficulty reports · 402

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 = '250C30'
  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 HEEA078703Bearing · failedREMOVED DUE TO ENGINE RAN WITH LOW OIL PRESSURE. NR 3 AND 4 BEARING FAILURE.May 14, 2002 · N530JC · Bell 206L · Turbine Engine Accessory DriveSDR HEEA078904Plenum · crackedPLENUM CRACKED.May 13, 2002 · N407PH · Bell 407 · Turbine Engine Compressor SectionSDR HEEA078905Plenum · crackedPLENUM CRACKED.May 13, 2002 · N407PH · Bell 407 · Turbine Engine Compressor SectionSDR 2002F00459Housing · crackedDURING INSPECTION FOUND TAIL ROTOR PITCH CHANGE LINK OUTBOARD BEARING HOUSING CRACKED. CRACK PROPAGATED FROM ROLL STAKE AREA OF ONE SIDE OF BEARING THROUGH OUTBOARD END OF PITCH CHANGE LINK TO THE OTHER SIDE AT OPPOSITE ROLL STAKE AREA. SUSPECTED CAUSES ARE May 9, 2002 · N10814 · Bell 206L1 · Tail Rotor Control SystemSDR HEEA078875Wire Harness · brokenBREAK IN CABLE CAUSING FADEC NG1 FAULT AND NG1 CONTINUITY FAULT. BREAK IS APPROXIMATELY 3 INCHES FROM ECU CONNECTOR PLUG.May 8, 2002 · N501PH · Bell 407 · Turbine Engine System WiringSDR HEEA078805Bleed Valve · malfunctionedENGINE POWER OSCILLATIONS AT HIGH POWER SETTINGS. REPLACED WITH SERVICEABLE BLEED VALVE.May 7, 2002 · N720PH · Bell 407 · Compressor Bleed ValveSDR HEEA078806Valve · inoperativeVALVE INOPERATIVE. REPLACED WITH SERVICEABLE VALVE.May 7, 2002 · N406PH · Bell 407 · Engine Anti-Icing SystemSDR HEEA078807Valve · stuckVALVE STUCK IN ON POSITION. REPLACED WITH SERVICEABLE VALVE.May 7, 2002 · N493PH · Bell 407 · Engine Anti-Icing SystemSDR HEEA078808Sensor · malfunctionedSENSOR PICKUP CAUSING NP1, NP1 RATE, OS, NPOS AND NPD FAULTS TO FADED SYSTEM. REPLACED WITH SERVICEABLE SENSOR PICKUP ASSY.May 7, 2002 · N8595X · Bell 407 · Fuel Control/Turbine EnginesSDR HEEA078809Hose · kinkedFIRE SHIELD TO FUEL NOZZLE HOSE KINKED. REPLACED WITH SERVICEABLE HOSE.May 7, 2002 · N406PH · Bell 407 · Engine Fuel DistributionSDR HEEA078810Line · leakingFUEL LINE LEAKING. REPLACED WITH SERVICEABLE LINE.May 7, 2002 · N407PH · Bell 407 · Engine Fuel DistributionSDR HEEA078811Igniter Box · weakIGNITOR BOX WEAK.May 7, 2002 · N490PH · Bell 407 · ExciterSDR HEEA078815Hmu · failedHMU HAS METERING VALVE CIRCUIT FAULT. REPLACED WITH SERVICEABLE HMU.May 7, 2002 · N493PH · Bell 407 · Fuel Controlling SystemSDR HEEA078843Bearing · wornBEARINGS WORN.May 7, 2002 · N724PH · Bell 407 · Turbine Engine Compressor SectionSDR HEEA078535Element · bypassingFACET FILTER IN BYPASS CONDITION. REPLACED FILTER.Mar 26, 2002 · N31821 · Bell 206L3 · Turbine Engine Oil SystemSDR HEEA078536Element · bypassingFACET FILTER IN BYPASS CONDITION. SCRAPPED AND REPLACED FILTER.Mar 26, 2002 · N3905B · Bell 206L1 · Turbine Engine Oil SystemSDR R7M2002F00036Battery · dischargedLEAD ACID BATTERY WOULD NOT HOLD CHARGE. UNIT SCRAPPED ON SITE. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.Feb 14, 2002 · N779LF · Snias AS350D1 · Battery/Charger SystemSDR CA020123004Shaft · sheared(CAN) INFLIGHT INDICATION OF PRESSURE LOSS NR 1 SYSTEM. INSPECTION REVEALED PUMP SHAFT SHEARED AND BRASS PARTICLES IN FILTER.Jan 22, 2002 · Skrsky S76A · Hydraulic Pump (Electric/Engine), MainSDR AC2A077543Governor · malfunctionedGOVERNOR VERY SENSITIVE, COULD NOT MATCH TORQUES & SHAFT IS RACHETY. REPLACED WITH SERVICEABLE PART.Dec 26, 2001 · Skrsky S76 · Engine ControlsSDR 2002FA0000299Governor · inoperativeVERY SENSITIVE, COULD NOT MATCH TORQUES AND SHAFT IS RACHETY. REPLACED WITH SERVICEABLE PART.Dec 20, 2001 · Turbine GovernorSDR AUS20011350Blade · cracked(AUS) MAIN ROTOR BLADE CRACKED.Dec 12, 2001 · Skrsky S76A · Main Rotor BladesSDR HEEA077009Bleed Valve · failedHIGH MGT. REPLACED WITH SERVICEABLE BLEED VALVE.Oct 31, 2001 · N496PH · Bell 407 · Compressor Bleed ValveSDR AC22001F00006Exhaust Stack · crackedEXHAUST ASSEMBLY, CRACKED. REPLACED WITH NEW EXHAUST STACK.Oct 18, 2001 · N7159J · Bell 206L3 · Engine Collector/Tailpipe/NozzleSDR AC22001F00005Valve · failedVALVE, RETURNING PART FOR WARRANTY CREDIT DUE TO IT FAILING AFTER ONLY 234 HOURS.Oct 17, 2001 · N17237 · Bell 206L3 · Emergency Flotation SectionSDR ALG2001F00032Relay · faultyDURING PRESTART CHECK OF THE ENGINE FIRE EXTINGUISHING SYSTEM. BOTTLE FIRED DURING TEST, RELAY COIL WAS FOUND FAULTY.Oct 16, 2001 · N519AL · Skrsky S76A · Extinguishing SystemSDR ALG2001F00028Blade · corrodedTURBINE TIME CHANGE DUE 1ST AND 2ND STAGE WHEELS, CYCLED OUT. TURBINE HAD A MFG LINER INSTALLED. REMOVED COMBUSTION SECTION AND FOUND SULFIDATION ON NR 1 WHEEL BLADES. (K)Oct 11, 2001 · N351AL · Bell 206L3 · Turbine SectionSDR ALG2001F00035Disc Pack · crackedON TAIL ROTOR DRIVESHAFT, DURING 25 HOUR AD INSPECTION, CRACKED DISC.Oct 5, 2001 · N58236 · Bell 407 · Tail Rotor Drive ShaftSDR HEEA076453Bleed Valve · malfunctionedHIGH TOT, DIDN'T CLOSE SMOOTHLY WHEN PRESSURE WAS APPLIED. REPLACED WITH SERVICEABLE BLEED VALVE.Oct 4, 2001 · N6251X · Bell 206L3 · Compressor Bleed ValveSDR HEEA076454Line · crackedLINE IS CRACKED AT FLARE. REPLACED WITH SERVICEABLE LINE.Oct 4, 2001 · N21497 · Bell 206L3 · Engine Fuel DistributionSDR HEEA076455Solenoid Valve · stuckSTICKS INTERMITTENTLY. REPLACED WITH SOLENOID VALVE.Oct 4, 2001 · N3108E · Bell 206L3 · Engine Fuel DistributionSDR HEEA076457Governor · malfunctionedN2 DROOP TO 97 PERCENT. COMPLETED DROOP COMPENSATION ADJUSTMENTS AND COMPLETED OPERATIONAL CHECK. FOUND ACCEPTABLE. AFTER 2:45 ADDITIONAL FLIGHT HOURS REPORTED N2 DROOP TO 97 PERCENT WITH N2 OVERSPEED TO 102 PERCENT. REPLACED WITH SERVICEABLE GOVERNOR.Oct 4, 2001 · N5014V · Bell 206L1 · Turbine GovernorSDR ALG2001F00031Spar · corrodedDISCOVERED DURING ROUTINE MAINTENANCE INSPECTION. SPAR EXFOLIATION WAS DETECTED ON LOWER SURFACE SKIN/SPAR SPLICE JOINT, CONSIDERED A MATERIAL DEFECT. BLADE WAS REMOVED FROM SERVICE AND SCRAPPED.Oct 1, 2001 · N1067D · Bell 206L1 · Main Rotor BladesSDR AUS20011399Web · cracked(AUS) COPILOTS SEAT WEB CRACKED.Aug 26, 2001 · Bell 206L3 · Flight Compartment EquipmentSDR ALG2001F00025Engine · making metalDURING RUN UP NR 2 ENGINE CHIP LIGHT ILLUMINATED. METAL SAW FOUND IN OIL SYSTEM CHIP PLUGS. ENGINE WAS REMOVED AND REPLACE.Aug 24, 2001 · N1547N · Skrsky S76A · Engine (Turbine/Turboprop)SDR HEEA075551Solenoid · stuckSTUCK OPEN CAUSING HIGH T.O.T. REPLACED WITH SERVICEABLE PART.Aug 21, 2001 · N4835 · Bell 206L3 · Engine (Turbine/Turboprop)SDR HEEA075554Fuel Control · malfunctionedUNABLE TO ADJUST START TEMP. LOW ENOUGH TO GET ENG. STARTED. START MODE FUEL FLOW APPROX. 3 TIMES ALLISON LIMITS. FOUND FLOWS 12PPH HIGH. (METERING VALVE SHIFTED), RECALIBRATED AND TESTED OK.Aug 21, 2001 · N22743 · Bell 206B3 · Fuel Control/Turbine EnginesSDR HEEA075555Governor · malfunctionedUNABLE TO CORRECT OVERSPEED. FOUND GOVERNOR BREAK RESPONDED 100 RPM EARLY. TESTED SATISFACTORY.Aug 21, 2001 · N4835 · Bell 206L3 · Turbine GovernorSDR HEEA075556Fuel Control · malfunctionedENGINE WOULD NOT ACCELERATE ON START, ADJUSTING START DERICHMENT AND START ACCELERATION TO MAXIMUM HAD NO EFFECT. FOUND PRESSURIZING VALVE TO BE STICKING. REMOVED VALVE AND POLISHED. VALVE WOULD STILL HANG UP. REPLACED VALVE AND UNIT TESTED SATISFACTORY.Aug 21, 2001 · N31073 · Bell 206L3 · Fuel Control/Turbine EnginesSDR HEEA075557Fuel Control · malfunctionedSTART ACCEL ADJUSTMENT FROZEN. REPLACED WITH SERVICEABLE FUEL CONTROL.Aug 21, 2001 · N4282Z · Bell 206L3 · Fuel Control/Turbine EnginesSDR 2002FA0000029Pitch Horn · crackedCRACK FOUND ON MAIN ROTOR GRIP AT BOLT HOLE WHERE GRIP ATTACHES TO PITCH HORN. CRACK EXTENDED FROM BOLT HOLE FOR 1.5 FEET TO OUTSIDE OF GRIP.Jul 30, 2001 · N230LF · Bell 230 · Main Rotor HeadSDR J8O2001F00000Bearing · damagedTRANSMISSION REMOVED FOR METAL ON CHIP DETECTORS. ON DISASSEMBLY IT WAS DISCOVERED THE DUPLEX BEARING PN 206-040-032-105 OUTER RACE WAS SPALLING AND 3 BALL BEARINGS HAD COME APART.Jul 27, 2001 · N303MP · Bell 206L3 · Main Rotor GearboxSDR AUS20010640Relay · failed(AUS) GENERATOR LINE CONTACT RELAY FAULTY.Jun 3, 2001 · Bell 206L1 · DC Power Distribution SystemSDR AU010382Shaft · cracked(AUS) ENGINE GEARBOX POWER TAKEOFF SHAFT CRACKED. SUSPECT CAUSED BY OVERTIGHTENING OF THE POWER OUTPUT ADAPTER.Apr 26, 2001 · Skrsky S76A · Turbine SectionSDR 20010517CW010Yoke · mismanufacturedAN ATTEMPT WAS MADE TO INSTALL THE NEW TAIL ROTOR HUB AND BLADE ASSEMBLY ON THE AIRCRAFT AND THE FLAPING ANGLE COULD NOT BE ADJUSTED. ON INSPECTION IT WAS FOUND THAT THE YOKE ASSEMBLY WAS MACHINED 90 DEGREES TO WHERE THE CUTOUTS THAT ALLOW THE FLAPPING. THE Apr 25, 2001 · N32AZ · Bell 206L3 · Tail Rotor HeadSDR 20010511CW007Gearbox · failedUPON SHUT DOWN, THE PILOT AND MECH NOTICE AN ODD NOISE COMING FROM THE TAIR ROTOR ACCOMPANIED BY A SLIGHT VIBRATION. AIRCRAFT WAS DUE FOR A 100 HR INSPECTION, SO T/R OIL WAS DRAINED AGAIN. THE CHIP PLUG HAD NO CHIPS BUT DID HAVE A BLACK PASTE. PASTE WAS EXAApr 19, 2001 · N530HL · Hughes 369FF · Tail Rotor GearboxSDR CA010504004Shaft · broken(CAN) - METAL GENERATION, SCHEDULED 100 HOUR INSPECTION.- GEARBOX REMOVED AND SENT FOR REPAIR. - TEARDOWN INSPECTION FOUND THAT THE INPUT GEARSHAFT HAD FAILED INBOARD OF THE INPUT GEAR.- THIS GEARBOX HAD BEEN REPAIRED ON 3 PREVIOUS OCCASIONS FOR CLOUDY OIL/SLUApr 19, 2001 · Hughes 369FF · Tail Rotor GearboxSDR HEEA072662Filter · leakingLEAKING.Apr 18, 2001 · N3116P · Bell 206L3 · Turbine Engine Oil SystemSDR HEEA072606Igniter · malfunctionedAIRCRAFT HAS DELAYED LIGHT OFF AFTER ENGINE WASH. REPLACED WITH SERVICEABLE IGNITER.Apr 16, 2001 · N6610C · Bell 206L3 · Spark Plug/IgniterSDR HEEA072535Element · bypassingBYPASSED EARLY. SCRAPPED LOCALLY AND REPLACED WITH NEW FILTER.Apr 11, 2001 · N31077 · Bell 206L3 · Turbine Engine Oil SystemSDR HEEA072564Lead · shortedONE OF THE FOUR TANGS ON B RECEPTACLE END BROKEN.Apr 11, 2001 · N6160Y · Bell 206L3 · Ignition Harness (Distribution)
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