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.
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
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 HEEA072568Fuel Control · fluctuatesTORQUE FLUCTUATING 10 PERCENT ON TAKE OFF. PERFORMED PRELIMINARY INSPECTION AND FOUND EXCESSIVE SIDE PLAY AT THE CUTOFF LINKAGE. REPLACED AND UNIT TESTED OK.SDR HEEA072569Fuel Control · malfunctionedSTARTING PROBLEMS AND OSCILLATIONS ABOVE 80 PERCENT TORQUE. PERFORMED PRELIMINARY INSPECTION AND COULD NOT DUPLICATE PROBLEM.SDR HEEA072570Fuel Control · malfunctionedHUNG STARTS IN THE 40 TO 50 PERCENT N1 RANGE. PERFORMED PRELIMINARY INSPECTION AND FOUND NO DISCREPANCIES. UNIT TESTED OK.SDR HEEA072571Fuel Control · malfunctionedENGINE LIGHTS OFF VERY HOT ON ALL STARTS AND THERE IS NO MORE ADJUSTMENT LEFT FOR LIGHTOFF DERICHMENT. IF ACCELERATION IS MOVED BACK, START IS STILL HOT AND ACCELERATION SLOW. PERFORMED PRELIMINARY INSPECTION AND FOUND NO DISCREPANCIES. UNIT TESTED OK.SDR HEEA071945Bleed Valve · failedHIGH TOT. OVERHAULED AND REPLACED DIAPHRAGMS P/N 6899114.SDR HEEA071946Bleed Valve · failedENGINE RUNS HOT. OVERHAULED AND REPLACED DIAPHRAGMS P/N 6899114.SDR AU010268Blade · corroded(AUS) MAIN ROTOR BLADE CORRODED IN AREA BETWEEN PAINT AND LEADING EDGESTRIP ON UNDERSIDE OF BLADE. CORROSION DEPTH APPROXIMATELY 1.52MM (0.060IN). FOUND BEFORE FITMENT.SDR 20010328CW013Blade · delaminatedON PRE-FLIGHT INSPECTION FOUND AN AREA OF DELAMINATION AT TAIL ROTOR BLADE STATION 27.00, 4.5 INCHES FROM LEADING EDGE OF TAIL ROTOR BLADE. ITS SIZE ABOUT .7500 INCH. BLADE REMOVED AND SENT FOR REPAIR.SDR TI1R001415Restraint · frayedRESTRAINT ASSEMBLY FRAYED. REMOVE AND REPLACE.SDR TI1R001382Cover · crackedCOVER, CRACKED UP. REMOVED AND REPLACED.SDR TI1R001391Bearing · delaminatedPAD BEARING, DELAMINATED. REMOVED AND REPLACED.SDR TI1R001395Gyro · inoperativeATTITUDE INDICATOR WOULD NOT COME ON. GYRO NOT SPOOLING UP. REMOVED AND REPLACED.SDR TI1R001396Gyro · damagedKVG 350 VERTICAL - RECEIVED DAMAGE IN SHIPPING, WOULD NOT SPOOL UP. REMOVED AND REPLACED.SDR TI1R001373Combustion Liner · defectiveALT NR 23051100 - CEB-A72-3229 NOT COMPLIED WITH AND BAD WELDS. REMOVED AND REPLACED.SDR TI1R001399Inverter · inoperativeINVERTER UNIT IS SERVICEABLE USED FOR TROUBLESHOOTING- PARTS SUPPORT. REMOVED AND REPLACED.SDR AU000903Drive Shaft · sheared(AUS) ENGINE DRIVEN FUEL PUMP INPUT DRIVE SHAFT SHEARED. (X)SDR TI1R001418Shaft · separatedHYDRAULIC PUMP - SHAFT SEPARATED. REMOVED AND REPLACED.SDR CA010921004Bolt · broken(CAN) - TAILROTOR GEARBOX RETENTION HARDWARE, BOLT HEAD FOUND MISSING DURING SCHEDULED MAINTENANCE. - 3 REMAINING BOLTS WERE INSPECTED WITH NO FAILURES FOUND. ALL THE TAILROTOR GEARBOX RETENTION HARDWARE WAS REPLACED WITH NEW. A 300 HOUR RETIREMENT SCHEDULE SDR AC2A0000064Control Cable · damagedAFTER LANDING ON SS169C, MOVED ENGINE THROTTLES TO GROUND IDLE WHILE LOADING AND UNLOADING PASSENGERS. WHEN THROTTLES MOVED BACK TO FLY, NR 2 THROTTLE MADE A NOTICEABLE CLICK AT THE FULL OPEN POSITION AND TRAVEL FURTHER FORWARD IN THE QUADRANT. PULLED THROTTSDR AC2A0000056Meter · corrodedPART IS ERODED AT THE METER SET CAUSING STREAKING AND VOIDS IN THE SPRAY PATTERN. REPLACED THE METER SET. (X)SDR AC2A0000057Metering Valve · erodedPART IS ERODED AT METER SET CAUSING STREAKING AND VOIDS IN THE SPRAY PATTERN. (X)SDR TI1R001404Resistor · leakingRESISTOR, LEAKING. REMOVED AND REPLACED.SDR AU000539Spar · cracked(AUS) MAIN ROTOR BLADE SPAR CRACKED FROM OUTBOARD LOWER FORWARD BLADE ATTACHMENT BOLT HOLE. LENGTH OF VISIBLE PORTION OF CRACK APPROXIMATELY 44.45 MM (1.75 INCHES). FOUND DURING INSPECTION IAW AD/S76/16 AMDT2.SDR CA000614008Bearing · failed(CAN) AIRCRAFT WAS GROUND RUN TO GROUND IDLE. TAIL ROTOR PEDDLES STARTED TO STIFFEN UP. AS THE AIRCRAFT RPM WAS INCREASED TO 100 PERCENT NR, TAIL ROTOR PEDDLES STIFFENED TO BEYOND LIMITS APPROXIMATELY 35 POUNDS. FORCE REQUIRED TO MOVE THE PEDDLES. AT THISSDR AC2A0000038Gear Shaft · wornGEARSHAFT RECEIVED NEW FROM AVIALL IN ORIG UNOPENED PACKAGE. PN 23056634. ATTEMPT MADE TO INSTALL PART IN COMPRESSOR SPLINE ADAPTER OF ENGINE. RETAINING RING THAT SECURES GEARSHAFT IN SPLINE ADAPTER WOULD NOT FIT IN GROOVE. INSUFFICIENT CLEARANCE BETWEEN RSDR AU000195Bearing · worn(AUS) ENGINE ACCESSORY GEARBOX 2.5 BEARING WORN. METAL CONTAMINATION OF OIL SYSTEM.SDR AC2A0000021Scroll · crackedCRACKED SCROLL. INSTALLED NEW SCROLL. (X)SDR TI1R001410Light · inoperativeTOT INDICATOR - INTERNAL LIGHTING INOPERATIVE. REMOVED AND REPLACED.SDR 2000ZZZX813Nozzle · misdrilledHOLES IN UPPER PART OF NOZZLE DRILLED IMPROPERLY, DISCOVERED ON SHELF. PART WAS NEW AND SUBMITTER STATED THIS WAS DONE DURING MANUFACTURING. NOTE: SHOULD HAVE 4 HOLES.SDR 2000ZZZX815Nozzle · misdrilledHOLES IN UPPER PART OF NOZZLE DRILLED IMPROPERLY, DISCOVERED ON SHELF. PART WAS NEW AND SUBMITTER STATED THIS WAS DONE DURING MANUFACTURING. NOTE: SHOULD HAVE 4 HOLES.SDR 2000ZZZX817Nozzle · misdrilledHOLES IN UPPER PART OF NOZZLE DRILLED IMPROPERLY, DISCOVERED ON SHELF. PART WAS NEW AND SUBMITTER STATED THIS WAS DONE DURING MANUFACTURING. NOTE: SHOULD HAVE 4 HOLES.SDR 2000ZZZX818Nozzle · misdrilledHOLES IN UPPER PART OF NOZZLE DRILLED IMPROPERLY, DISCOVERED ON SHELF. PART WAS NEW AND SUBMITTER STATED THIS WAS DONE DURING MANUFACTURING. NOTE: SHOULD HAVE 4 HOLES.SDR 2000ZZZX819Nozzle · misdrilledHOLES IN UPPER PART OF NOZZLE DRILLED IMPROPERLY, DISCOVERED ON SHELF. PART WAS NEW AND SUBMITTER STATED THIS WAS DONE DURING MANUFACTURING. NOTE: SHOULD HAVE 4 HOLES.SDR 20000413SH036Shaft · will not balanceENGINE SIDE OF SHAFT WILL NOT BALANCE. REMOVED AND REPLACED. (X)SDR CA000110001Bearing · making metal(CAN) INPUT ALIGNMENT BEARING MAKING METAL. GEARBOX STRIPPED TO DETERMINE CAUSE OF PROBLEM.(CHIP LLTE IN FLIGHT)SDR 99ZZZX4572Pump · failedLOW OIL PRESSURE - PARTS SUPPORT AIRCRAFT. REMOVED AND REPLACED.SDR AU990578Blade · damaged(AUS) NR 2 ENGINE FIRST STAGE TURBINE BLADES SEVERELY DAMAGED.SDR 20000523SH007Spur Gear · spalledTHE REFERENCED SPUR ADAPTER GEARSHAFT ASSEMBLY WAS INSPECTED AT DALLAS AIRMOTIVE-MILLVILLE ON 6-17-99. THIS PART WAS DETERMINED TO BE UNSERVICEABLE AND UNREPAIRABLE DUE TO SPALLED GEAR TEETH (REFERENCE DALLAS AIRMOTIVE FORM ESPD NR 08-070-300100; ALLSION ENGISDR 20000523SH006Shaft · defectiveTHE REFERENCED OUTER POWER TURBINE SHAFT WAS INSPECTED9. THIS PART WAS DETERMINED TO BE UNSERVICEABLE AND UNREPAIRABLE DUE TO CURVIC COUPLING ROOT DAMAGE (REF: FORM ESPD NR 08-070-301500; ALLISON GAS TUBRINE 250-C30 SERIES OVERHAUL MANUAL, SECTION 72-50-00, PSDR 99ZZZX2889Solenoid · intermittentSOLENOID OPERATES INTERMITTENTLY. REF: MCN 53. REMOVED AND REPLACED.SDR CA990308002Tach Generator · worn(CAN) WHEN HYDRAULIC PUMP AND TACHOMETER GENERATOR WERE REMOVED TO REPLACE TRANSMISSION OIL PUMP SEAL, THE TACH GENERATOR HAD TO BE PRIED OFF. THE DRIVE SPLINES ON THE TACH WERE WORN RAZOR SHARP, FURTHER WEAR WOULD HAVE RESULTED IN TACH GENERATOR PROBLEM. INSDR AU981597Gear · broken(AUS) MAIN TRANSMISSION MAIN DRIVE GEAR TOOTH BROKEN OFF.SDR 98ZZZX4750Line · chafedWHILE IN CRUISE FLIGHT, TRANSMISSION OIL RPESSURE INDICATOR STARTED TO SHOW LOW PRESSURE. DIVERTED TO HI-264 FOR MAINTENANCE. AIRCRAFT ASISGNED TO CAMERON BASE. REPLACED HOSE ASSEMBLY. REF: 412 IPC, CHAPTER 63-99-00, PAGE 22, FIGURE 63-6, ITEM 49.SDR CA980818012Governor · malfunctioned(CAN) THE GOVERNOR WAS OPERATING OK, PRIOR TO SHUTDOWN WITH THE N2 RANGE FROM 97 PERCENT TO 100 PERCENT RPM. SHORTLY AFTER ON RESTART, THE N2 OPERATING RANGE HAD GONE TO 100 PERCENT TO 103 PERCENT RPM AND THE PILOT COULD NOT BEEP THE ENGINE BELOW 102 PERCENT.SDR 98ZZZX3595Studs · looseIN CRUISE, 400 FEET, 80 KNOTS, PILOT REPORTED SEVERALS SHUDDERS, THEN NR 2 ENGINE TOT PEGGED TO THE HIGH SIDE. SECURED ENGINE, RETURNED TO BASE AND MADE UNEVENTFUL LANDING. MAINTENANCE REMOVED AND REPLACED ENGINE DUE TO N1 AND N2 SEIZURE. SUBMITTER STATED NSDR AU980958Case · cracked(AUS) ELT TRANSMITTER AND BATTERY HOUSING BODIES BADLY CRACKED IN SEVERAL PLACES. SUSPECT CAUSED BY OVERTORQUE OF THE MAIN BODY SCREWS DURING MANUFACTURE. PART TC: 187.SDR 98ZZZX2944Spring · brokenFUEL CONTROL UNIT RETURNED TO A REPAIR AND OVERHAUL FACILITY FOR A REPORTED ENGINE DECELERATION. TROUBLESHOOTING FOUND THE FUEL CONTROL GOVERNOR SPRING BROKEN WHICH CONFIRMED THE REPORTED ENGINE DECELERATION.SDR AU980998Servo · corroded(AUS) CYCLIC SERVO EXTENSION P\N ACM28592 CORRODED INTERNALLY RESTRICTING PISTON ROD P\N ACM28591.SDR 98ZZZX3156Seal · damagedSEAL VISUALLY INSPECTED WHEN REMOVING FROM PACKAGE. INSPECTED AND FOUND EXCESSIVE CHIPPING OF MATING SURFACE.SDR 98ZZZX3163Seal · damagedVISUALLY INSPECTED SEAL WHEN REMOVING FROM PACKAGE. INSPECTED AND FOUND EXCESSIVE CHIPPING OF MATING SURFACE.
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