Allison 250-C40B
Service difficulty reports · 87
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 = '250C40B' 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.
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 = '250C40B' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR AC2A110526Bearing · delaminatedFOUND DELAMINATED / REPLACED BEARINGSDR AC2A108635Stud · crackedFOUND STUDS CRACKED DURING INSPECTION, AT BASE OF THREADED PORTION./ REPLACED STUDS.SDR 2006FA0000059Restraint · failedPILOT REPORTED SEVERE VIBRATION AFTER INSPECTION FOUND ORANGE BLADE SHEAR RESTRAINT AT MAIN ROTOR SYSTEM FAILED. CNETER BUSHING HAD BECOME DEBONDED FROM ELASTOMERIC. VISUAL INSPECTION DIFFICULT BECAUSE OF ORIENTATION AT INSTALLATION. (K)SDR CA051125002Control Tube · chafedT/R CONTROL TUBE 430-001-007-101, FOUND WITH CHAFING MARKS. TUBE WAS REPLACED WITH NEW -105.SDR CA051125003Control Tube · chafedT/R CONTROL TUBE 430-001-007-101 FOUND WITH CHAFING MARKS. TUBE WAS REPLACED WITH NEW -105.SDR 2005FA0001303Wire · failedA LOOSE CONNECTION AT THE RING TERMINAL ON THE AIRCRAFT BATTERY CONNECTOR CAUSED SUFFICIENT HEAT BUILDUP TO MELT THE SECURING NUT AND WASHER AND CHAR THE WIRING. THE PROBLEM WAS COMPOUNDED BY THE AIRCRAFT MFG USE OF IMPROPERLY SIZED RING TERMINALS AT THIS CONSDR JJWA0061549Blade · fodGROUND CREW CLOTH SAFARI HAD BLEW OFF IN HIGH WIND AND WENT THROUGH MAIN ROTOR. NO VIBRATIONS OR APPARENT DAMAGE FELT IN AIRCRAFT, WAS SMOOTH RETURNING TO AIRPORT. FOUND DENT TOP AND BOTTOM AT STA 141 TO 145, IB OF OB TRIM TABS. OTHER AIRCRAFT SENT TO MOVE SDR 2005FA0000249Cowling · corrodedLT HAND TRANSMISSION COWLING FRETTING AGAINST ADJACENT COWLING. DZUS FASTENER DOES NOT HOLD COWLING WITH ENOUGH TENSION, CAUSING FRETTING. MOVEMENT CAUSED CRACK AT BOTTOM DZUS RAIL. (K)SDR 2005FA0000278Bearing · wornSWASHPLATE DUPLEX BEARING P/N 430-310-461-101 S/N ZV10085 FOUND WORN ON LOWER RACE.SDR CA050124005Blade · debonded(CAN) TAIL ROTOR BLADE DOUBLER DEBOND ON APPROX. 6.5 IN. FROM THE TIP OF THE DOUBLER.SDR CA041207004Spline · worn(CAN) THE TRANSMISSION WAS IN FOR A HARD LANDING SUDDEN STOPPAGE INSPECTION AND EXCESSIVE WEAR WAS FOUND ON THE INTERNAL SPLINES OF THE GEARSHAFT AS WELL AS ON THE EXTERNAL SPLINES OF THE SUNGEAR.THE WEAR WAS NOT A RESULT OF THE HARD LANDING.THIS IS THE SECONDSDR AC2A094057Hmu · malfunctionedM/ECU 2 ADVISORY LIGHT ILLUMINATED ON SHUTDOWN. VFMVFLT FAULT WAS RECORDED FOR ECU 2. REPLACED HMU.SDR AC2A093330Altimeter · malfunctionedALTIMETER MALFUNCTIONED. 60 FT LOW ON CERTIFICATION CHECK. REPLACEDSDR AC2A092331Exhaust Stack · crackedEXHAUST STACK IS CRACKED. REPLACED EXHAUST STACKSDR AC2A092332Exhaust Stack · crackedEXHAUST STACK IS CRACKED. REPLACED EXHAUST STACKSDR CA031015001Terminal · detached(CAN) THE P56A4 POWER CABLE WAS DETACHED FROM THE CRIMPED AN-4 4AWG N-40-50 ELECTRICAL LUG.SDR AC2A086763Module · galledHYDRAULIC MODULE FILTER HOUSING THREADS GALLED ON THE RETURN SIDE. REPLACED HYDRAULIC MODULE ASSEMBLY.SDR AC2A086459Impeller · brokenCORNER OF IMPELLER BLADE IS BROKEN OFF. BROKEN AREA MEARURES 1/4 X 1/2 INCH. BROKE IMPELLER PIECE WAS FOUND IN THE TURBINE. REMOVED ENGINE FROM AIRCRAFT AND REPLACED IMPELLER.SDR AC2A086265Hydromech Unit · leakingREMOVED FOR HMU BACKLASH CHECK. FOUND TO BE LEAKING FUEL FROM DRIVE SPLINE SEAL. REPLACED HMU.SDR CA021029010Sleeve · mismanufactured(CAN) FOUND IN MANUFACTURING, WEAR SLEEVES NOT BONDED PROPERLY TO T/R CONTROL TUBE ASSEMBLY. SUPPLIER DID NOT PERFORMED THE SURFACE PREPARATION REQUIRED BEFORE BONDING THE WEAR SLEEVES TO THE CONTROL TUBE CAUSING LACK OF ADHESION.SDR EGR2002F00003Hydromech Unit · leakingDURING FLIGHT CREWS SMELLED FUEL FUMES AFTER LANDING AT HOSPITAL. PILOT SAW FUEL IN THE NR 2 ENGINE COMPARTMENT. CECHANIC PINPOINTED FUEL LEAK TO THE AFT SIDE OF THE HMU, COMING FROM A PLATE WITH AN ADJUST/CONTROL.SDR EGR2002F00009Hydromech Unit · leakingDURING FLIGHT CREW DETECTED FUEL ODOR AFTER LANDING. PILOT SAW FUEL IN THE NR 2 ENGINE COMPARTMENT. MECHANIC PINPOINTED FUEL LEAK TO THE AFT SIDE OF THE HMU COMING FROM A PLATE WITH AN ADJUSTOR/CONTROL.SDR EGR2002F00004Hydromech Unit · inoperativeON START UP, PILOT GOT A MECU 2 INDICATION ON THE IIDS. FAULTS WERE: STOPCMTFLT, WFHDFLT, CPU HARD FLT AND WDT HARD FLIGHT. REMOVED AND REPLACED HMU. CLEARED FAULTS.SDR AC2A081090Solenoid · defectiveSOLENOID IS DEFECTIVE. SNAP RING ON SHAFT UNDER THE SPRING DOES NOT STAY IN GROOVE. REPLACED SOLENOID.SDR NUU2001F00000Wire · damagedUNCOMMANDED AUTOPILOT DISCONNECT. WHEN PILOT CYCLIC PRESS TO TRANSMIT SWITCH OPERATED. CYCLIC HANDLE WIRING FOUND CUT THROUGH BY THE OPERATION OF THE TRANSMIT TRIGGER. WIRING REPLACED AND REROUTED. CO PILOT CYCLIC HANDLE INSPECTED, WIRING FOUND DAMAGED BY SDR HEEA076566Hose · leakingHOSE LEAKS UNDER PRESSURE. REPLACED WITH SERVICEABLE HOSE.SDR 2002FA0000073Turbine Wheel · corrodedTURBINE CAME IN FOR SHOP VISIT FOR LOW POWER. BEGAN DISASSEMBLY OF TURBINE, REMOVED OUTER COMBUSTION CASE AND FOUND SULFIDATION ON 1ST STAGE WHEEL. HAD ONE BLADE MISSING AND SEVERAL BROKEN BLADES. THIS TURBINE HAD A ROLLS ROYCE LINER. HAVE WHEELS TESTED FOSDR AC2A075814Bleed Valve · loosePOWER ASSURANCE LOW NR 1 ENGINE. FOUND NR 1 ENGINE BLEED VALVE BODY BOLTS LOOSE. REPLACED WITH REPAIRED BLEED VALVE.SDR AC2A072786Elbow · leakingFUEL LEAK ON LINE FROM CEFA TO HMU. FOUND ELBOW ON CEFA HAD A MILLING MARK ON FACE OF FLANGE. REPLACED ELBOW.SDR AC2A072787Line · leakingOIL LEAK ON INBOARD SIDE OF NR 1 ENGINE. FOUND TUBE ASSY FROM CHECK VALVE TO GEAR BOX HOUSING WOULD NOT SEAT PROPERLY. REPLACED TUBE ASSY.SDR AC2A072784Bleed Valve · looseBLEED VALVE HOUSING WAS LOOSE. REPLACED DIAPHRAGM. REASSAMBLED AND PERFORMED TEST.SDR AC2A072812Blower · defectiveBEARING MAKES CLICKING SOUND AND CORROSION NEAR REAR NUT. PART WAS NEVER INSTALLED ON AIRCRAFT DUE TO THIS.SDR AC2A0000089Turbine Wheel · contaminatedFIELD MAINT REPORTED NR 1 ENGINE HAD FOREIGN OBJECT DAMAGE TO NR 1 ENG COMPRESSOR. MECH EXAMINED TURBINE FOR DAMAGE PER MAINT INSTRUCTIONS. DAMAGE FOUND ON TURBINE NR 1 WHEEL AND ENG REMOVED AND RETURNED FOR REPAIR. UPON TEARDOWN, FOUND NR 1 TURB WHEEL HAD SDR 99ZZZX3454Filter · cloggedFILTERS CHANGED FOR BYPASS BUTTON ACTIVATION IN 100 HOURS.SDR 99ZZZX3451Diffuser · brokeDIFFUSER BROKEN OFF AT FLANGE MOUNT. SUSPECT VIBRATION.SDR 99ZZZX3452Filter · failedBYPASS BUTTON POPPED.SDR 99ZZZX3453Filter · failedBYPASS BUTTON POPPED.
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