Allison 250-C30S
Service difficulty reports · 449
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 = '250C30S' 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 = '250C30S' 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 HEEA063068Nozzle · crackedENGINE REMOVED DUE TO CYCLED TURBINE WHEELS. UPON INSPECTION OF TURBINE PARTS NOTED CRACKS BEYOND SERVICEABLE LIMITS ON 1ST STAGE NOZZLE LEADING AND TRAILING EDGE VANES.SDR HEEA063070Nozzle · crackedENGINE REMOVED DUE TO TURBINE OVERHAUL. UPON INSPECTION OF TURBINE PARTS NOTED CRACKS BEYOND SERVICEABLE LIMITS ON 1ST STAGE NOZZLE VANES.SDR HEEA063071Nozzle · crackedENGINE REMOVED DUE TO TURBINE OVERHAUL. UPON INSPECTION OF TURBINE PARTS NOTED VANE CRACKS BEYOND SERVICEABLE LIMITS ON 1ST STAGE NOZZLE.SDR HEEA063058Fuel Pump · wornFUEL PUMP HAD WORN AND PITTED SPLINES.SDR HEEA063053Fuel Pump · failedFUEL PUMP INOPERABLE. DOES NOT PUMP FUEL.SDR HEEA062970Pinion Gear · wornENGINE REMOVED DUE TO METAL IN OIL. FOUND CAUSE: PICKOUT IN GEAR TEETH. REPLACED WITH SERVICEABLE GEAR. SCRAPPED GEAR.SDR CA990804002Wheel · cracked(CAN) HAIR LINE CRACKS DETECTED DURING NDT OF THE WHEEL AT REPAIR /OVERHAUL FACILITY (ACRO AEROSPACE).SDR CA990728033Nozzle Shield · broke(CAN) ENGINE WAS SLOW TO START. REMOVED COMBUSTION LINER FOR TROUBLESHOOTING AND FOUND DEFLECTOR DETACHED FROM NOZZLE SHIELD PARTIALLY BLOCKING ENTRY TO NOZZLE VANES.SDR CA990614018Bolt · sheared(CAN) DURING 50-HOUR INSPECTION, SUBJECT BOLT WAS FOUND SHEARED AT BOLT HEAD. PAINT STRIPE ON BOLT HEAD HAD MOVED. BOLT HOLE BORES INSPECTED AND FOUND SERVICEABLE. ALL IDENTICAL BOLTS (3 EACH), NUTS, WASHERS, CHANGED AS PRECAUTIONARY PROCEDURE.SDR HEEA062399Adapter · wornENGINE REMOVED DUE TO CYCLES. UPON INSPECTION OF COMPRESSOR PARTS NOTED: STEP WEAR BEYOND SERVICEABLE LIMITS ON SPUR GEAR SHAFT AFT SPLINES FAILED NO-GO GAUGE. INSTALLED A NEW SPUR GEAR SHAFT.SDR HEEA062400Seal · wornENGINE REMOVED DUE TO CYCLES. UPON INSPECTION OF COMPRESSOR PARTS NOTED: WORN BEYOND SERVICEABLE LIMITS ON SEAL ASSY TANG SLOTS. INSTALLED A NEW SEAL ASSY.SDR HEEA062135Pump · mismanufacturedNEW PART RECEIVING INSPECTION REVEALED OIL PUMP PRESSURE BODY CAGE HEIGHT BELOW SPECS. REFERENCE: AFA NR 41388A.SDR HEEA062136Pump · mismanufacturedIMPROPER CAGE INSTALLED IN OIL PUMP PRESSURE BODY. REVEALED DURING RECEIVING INSPECTION. REFERENCE: AFA NR 41389A.SDR CA991210003Blower · failed(CAN) DURING FLIGHT, THE PILOT TURNED ON HEAT-VENT BLOWER AND REPORTED HEARING AN UNUSUAL HIGH PITCHED WHINE AND UNUSUAL SMELL AND THEN SHUT OFF THE UNIT. MAINTENANCE PERSONNEL COULD NOT DUPLICATE THE NOISE, BUT DID SMELL AN ODOR. UNIT WAS REPLACED AND CARBSDR HEEA061873Pump · making metalENGINE REMOVED DUE TO SUSPECTED SCAVENGE PUMP FAILURE. OIL PUMP SCAVENGE BODY HAD EXCESSIVELY WORN GEAR WALLS. O-RINGS WERE FLAT AND HARD, OIL PUMP GEARSHAFTS HAVE EXCESSIVE GROOVES AND WEAR CONTRIBUTING TO POOR SCAVENGE. PART SCRAPPED.SDR CA990430005Fitting · cracked(CAN) DURING SCHEDULED 100-HOUR INSPECTION, A 3 INCH CRACK WAS DETECTED MID-SPAN, TOP, OUTBOARD SIDE, STARTING AT A FASTENER HOLE AND THEN THROUGH A SECOND HOLE ENDING AT THE THIRD HOLE.SDR CA990430058Control Lever · mismanufactured(CAN) ON SCHEDULED INSPECTION, IT WAS NOTED THAT ONE OF THE BEARINGS ON A FLIGHT CONTROL LEVER WAS NEAR ITS LIMITATION (AXIAL). THE LEVER ASSY P/N 76400-03 005-044 WAS ORDERED AND INSTALLED. HOWEVER, WHEN HYD AND ELEC POWER WAS APPLIED, THE LEVER ASSY WOULDSDR CA990323023Blower · damaged(CAN) INSPECTION FOUND BEARING FAILURE CAUSING INTERNAL WEAR OF THE FAN BLADES.SDR HEEA060476Nozzle · crackedENGINE REMOVED DUE TO CYCLES. UPON INSPECTION OF TURBINE PARTS NOTED: CRACKED BEYOND SERVICEABLE LIMITS ON NR 1 NOZZLE VANES.SDR HEEA060477Nozzle · crackedENGINE REMOVED DUE TO CYCLES. UPON INSPECTION OF TURBINE PARTS NOTED: CRACKED BEYOND SERVICEABLE LIMITS ON NR 2 NOZZLE VANES THROUGH OUTER BAND.SDR HEEA060352Gearshaft · wornENGINE REMOVED DUE TO TURBINE 1 AND 2 WHEEL CYCLES. UPON VISUAL INSPECTION ON COMPRESSOR NOTED: STEP WEAR BEYOND SERVICEABLE LIMITS ON SPUR GEAR SHAFT SPLINES. FAILED NO-GO GAUGE. INSTALLED A NEW SPUR GEAR SHAFT.SDR HEEA060353Gearshaft · wornENGINE REMOVED DUE TO TURBINE OVERHAUL. UPON INSPECTION ON COMPRESSOR NOTED: STEP WEAR BEYOND SERVICEABLE LIMITS ON SHAFT FORWARD AND AFT SPLINES. FAILED NO-GO GAUGE. INSTALLED A NEW SPUR GEAR SHAFT.SDR 99ZZZX413Spool Bushing · failedGOVERNOR REMOVED FOR TORQUE FLUCTUATION. UPON INSPECTION IN SHOP, FOUND BALL BEARING THAT FELL OUT OF GOVERNOR COVER WHILE STILL ASSEMBLED. SPLIT GOVERNOR BODY IN SHOP AND DISCOVERED SPOOL BUSHING HAD FAILED.SDR HEEA0016634Nozzle · failedENGINE REMOVED DUE TO NR 1 AND NR 2 WHEEL CYCLES. UPON INSPECTION OF TURBINE PARTS NOTED: RUNOUT EXCEED SERVICEABLE LIMITS ON NR 2 NOZZLE TIP PATHS .002 INCH RUNOUT OVER SPECS ON NR 1 TIP PATH. .001 INCH RUNOUT OVER SPECS ON NR 2 TIP PATH. INSTALLED OVERHSDR 98ZZZX4426Governor · failedDURING DEPARTURE, EXPERIENCED NR 2 ENGINE HIGH SIDE FAILURE. RETURNED TO MAINTENANCE. REPLACED NR 2 GOVERNOR.SDR 99ZZZX210Carbon Seal · crackedINSPECTED SEAL AND FOUND CHIPPED EDGE AND CRACK THROUGH CARBON SEAL.SDR 98ZZZX4752Governor · malfunctionedON 10-27-98 DURING DEPARTURE FROM LAFAYETTE BASE, EXPERIENCED NR 2 ENGINE HIGH SIDE FAILURE. RETURNED FOR MAINTENANCE. REPLACED NR 2 GOVERNOR.SDR 98ZZZX4753Engine · failedIN-FLIGHT, NR 2 ENGINE OIL PRESSURE DROPPED WITH OIL PRESSURE LIGHT ILLUMINATION. PILOT SECURED ENGINE AND MADE UNEVENTFUL SINGLE ENGINE LANDING. MAINTENANCE FOUND 3 QUARTS OIL CONSUMPTION AFTER REPLENISHING OIL. SEVEN MINUTES INTO PENALTY RUN, OIL CONSUMPTSDR 99ZZZX238Engine · failedIN-FLIGHT, NR 2 ENGINE OIL PRESSURE DROPPED WITH OIL PRESSURE LIGHT ILLUMINATION. PILOT SECURED ENGINE AND MADE UNEVENTFUL SINGLE ENGINE LANDING. MAINTENANCE FOUND 3 QUARTS OF OIL CONSUMPTION AFTER REPLENISHING OIL. SEVEN MINUTES INTO PENALTY RUN, OIL CONSSDR 98ZZZX3998Transmitter · failedON TAKEOFF, NR 2 ENGINE TORQUE DROPPED WITH A CONTINUING RISE IN ENGINE TEMPERATURE. PILOT RETARDED NR 2 ENGINE AND MADE AN UNEVENTFUL LANDING. MAINTENANCE FOUND DEFECTIVE NR 2 ENGINE TORQUE TRANSMITTER. REF: ALLISON C-30 IPC, CHAPTER 73-32-00, FIG 1-18.SDR 98ZZZX4745Transmitter · malfunctionedON TAKEOFF, NR 2 ENGINE TORQUE DROPPED WITH A CONTINUING RISE IN ENGINE TEMPERATURE. PILOT RETARDED NR 2 ENGINE AND MADE UNEVENTFUL LANDING. MAINTENANCE FOUND DEFECTIVE NR 2 ENGINE TORQUE TRANSMITTER. REF: ALLISON C-30 IPC, CHAPTER 73-31-00, FIGURE 1-18.SDR HEEA0016050Spur Gear · wornENGINE REMOVED DUE TO IMPELLER TIME. INSPECTION OF COMPRESSOR PARTS NOTED: STEP WEAR BEYOND SERVICEABLE LIMITS ON SHAFT SPLINES.SDR CA980928005Fuel Control · faulty(CAN) ENGINE STARTED HOT AND DID NOT IMMEDIATELY SHUT DOWN WHEN THE THROTTLE WAS STOP COCKED. FUEL LEVER WAS STOP COCKED AND 3-5 SECONDS LATER, THE ENGINE SHUT DOWN. THE FUEL CONTROL UNIT WAS FOUND FAULTY.SDR 98ZZZX3596Detector Loop · failedSHORTLY AFTER TAKEOFF, NR 1 ENGINE FIRE LIGHT ILLUMINATED. PILOT DEPLOYED FIRE BOTTLE AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND DEFECTIVE FLAME DETECTOR. REF: S-76 IPC, CHAPTER 26-11-00, FIGURE 1, ITEM 21.SDR HEEA0015736Signal Cond · malfunctionedSIGNAL CONDITIONER UNIT CAUSING NR 1 FLOWMETER TO PEG HIGH.SDR HEEA0015661Signal Cond · malfunctionedFUEL FLOW HAS NO INDICATION NR 2.SDR HEEA0015308Support · defectiveRECEIVING INSPECTION REVEALED: EXCESSIVE RUNOUT .013 INCH BEYOND SERVICEABLE LIMITS ON G.P. SUPPORT FORWARD FLANGE. INSTALLED A DALLAS AIRMOTIVE OVERHAULED G.P. SUPPORT.SDR HEEA0015309Collector Ring · defectiveRECEIVING INSPECTION REVEALED: EXCESSIVE RUNOUT .010 INCH BEYOND SERVICEABLE LIMITS ON EXHAUST COLLECTOR. FORWARD PILOT AND VENT ORIFICE TUBE OUT OF ROUND. INSTALLED A DALLAS AIRMOTIVE OVERHAULED EXHAUST COLLECTOR.SDR HEEA0015214Spline Adapter · mismanufacturedRECEIVING INSPECTION REVEALED: MEASURED .0005 INCH BELOW SPECS (.9855 INCH - .9860 INCH) ON SPLINE ADAPTER OUTSIDE DIAMETER.SDR CA990505001Pivot Shaft · melted(CAN) LANDING LIGHT SHAFT ASSY INSULATORS WERE FOUND BURNED. IT APPEARS THAT THE FOLLOWING ARE UNAPPROVED PARTS: 46-0943-1 BUS BAR, 46-0944-1 INSULATOR AND 46-0945-1. INSULATORS DO NOT CONFORM TO MANUFACTURER'S SPECS AND HAVE THUS MELTED. THIS PART CARRIESSDR 98ZZZX3159Seal Kit · leakingUPON ASSEMBLY, PRESSURED UP NR 1 SEAL AREA WITH ENGINE OIL TO CHECK FOR LEAKAGE AND FOUND SEAL WOULD NOT HOLD (EXCESSIVE LEAKAGE PAST SEAL). SUSPECT HEIGHT OF CARBON SEAL TOO LOW TO SEAL PROPERLY AGAINST MATING RING.SDR HEEA0014761Actuator · malfunctionedACTUATOR MOTOR ROUTES TOO LONG BEFORE SHAFT TURNS.SDR HEEA0014762Actuator · malfunctionedMOTOR ROTATES TOO LONG BEFORE SHAFT MOVES.SDR HEEA0014715Igniter Box · damagedDAMAGED THREADS ON IGNITER LEAD POST.SDR HEEA0014653Generator · intermittentIGNITION GENERATOR INTERMITTENT.SDR HEEA0014443Bearing · mismanufacturedRECEIVING INSPECTION REVEALED: RUST BEYOND SERVICEABLE LIMITS ON 3 AND 4 CAGE. INSTALLED A NEW 3 AND 4 CAGE.SDR CA980602029Output Flange · sheared(CAN) OUTPUT FLANGE REMOVED TO CHANGE OUTPUT SHAFT SEALS. FOUND THAT THE OUTPUT FLANGE SHAFT WAS SHEARED OFF BEHIND THE SECURING NUT.SDR HEEA0014218Rear Diffuser · separatedENGINE REMOVED DUE TO COMPRESSOR WAS SEIZED ON FIRST START. COMPRESSOR DISASSEMBLY INSPECTION REVEALED: SEPARATION OF REAR DIFFUSER MAJOR SEAL.SDR 98ZZZX2087Valve Sleeve · separatedDURING SHOP INSPECTION FOR DECELERATION OF ENGINE, FOUND FUEL CONTROL BONDING ON SLEEVE SEPARATED.SDR 98ZZZX2090Bellows · failedDURING CRUISE FLIGHT, NR 1 ENGINE FAILED. RUN-ON LANDING CONDUCTED AT ABBEVILLE AIRPORT, NO DAMAGE OR INJURIES.
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