Allison 250-C30P
Service difficulty reports · 646
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 = '250C30P' 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 = '250C30P' 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 HEEA060355Seal · pittedENGINE REMOVED DUE TO METAL. UPON INSPECTION OF COMPRESSOR PARTS NOTED: PITS BEYOND SERVICEABLE LIMITS ON SEAL CARBON FACE. INSTALLED A NEW SEAL.SDR HEEA060350Nr 2 Nozzle · mismanufacturedRECEIVING INSPECTION REVEALED RUNOUT BEYOND SERVICEABLE LIMITS ON NR 2 NOZZLE, 1ST STAGE TIP PATH OBTAINED .005 INCH.SDR HEEA060351Support · mismanufacturedOVERSPRAY ON 25/28 SEAL BORE. RECEIVING INSPECTION REVEALED EXCESSIVE SPRAY ON POWER TURBINE.SDR HEEA059983Liner · crackedPART IS CRACKED. ENGINE REMOVED DUE TO TURBINE OVERHAUL. UPON INSPECTION OF TURBINE PARTS NOTED: CRACKED BEYOND SERVICEABLE LIMITS ON COMBUSTION LINER AS MARKED.SDR CA990310069Bearing · wrong part(CAN) THE OEM USES BARDEN BEARINGS WITH THE LOGO AND THE PART NUMBER STAMPED ON. THE BEARINGS FOUND IN THIS UNIT WERE COMMERCIAL FAFNIR BEARINGS. SUBMITTER STATED THIS IS AN UNAPPROVED PART.SDR HEEA0016633Nozzle · failedTURBINE DISASSEMBLED DUE TO N1 DRAG ON TEST CELL. UPON INSPECTION OF TURBINE PARTS NOTED: TIP DRAG ON NR 2 NOZZLE 1ST STAGE TIP PATH. INSTALLED AN OVERHAULED NR 2 NOZZLE.SDR AU981408Support · cracked(AUS) TAIL ROTOR GEARBOX SUPPORT CRACKED ON LT SIDE. CRACK STARTS AT A COUNTERSUNK RIVET AND RUNS THROUGH TO THE UPPER SKIN EDGE. SUBMITTER SUSPECTS CAUSED BY INCORRECT SHIMMING BETWEEN THE SKIN AND THE BELLCRANK LONGERON.SDR HEEA0016176Spur Gear · wornENGINE REMOVED DUE TO TURBINE OVERHAUL. VISUAL INSPECTION OF COMPRESSOR REVEALED: STEP WEAR BEYOND SERVICEABLE LIMITS ON SHAFT AFT SPLINES. INSTALLED A NEW SHAFT.SDR HEEA0016179Spur Gear · wornENGINE REMOVED DUE TO CRACKED SCROLL. DISASSEMBLY INSPECTION REVEALED: STEP WEAR BEYOND SERVICEABLE LIMITS ON SPUR GEAR SHAFT AFT SPLINES. FAILED NO-GO GAUGE. INSTALLED A NEW SPUR GEAR.SDR HEEA0016180Bearing · spalledENGINE REMOVED DUE TO CRACKED SCROLL. DISASSEMBLY INSPECTION REVEALED: SPALLING ON NR 1 BEARING ROLLER. INSTALLED A NEW NR 1 BEARING.SDR HEEA0016181Carbon Seal · corrodedENGINE REMOVED DUE TO CRACKED SCROLL. DISASSEMBLY INSPECTION REVEALED: PITTED BEYOND SERVICEABLE LIMITS ON CARBON SEAL MATING SURFACE. INSTALLED A NEW CARBON SEAL.SDR HEEA0016182Mating Ring · corrodedENGINE REMOVED DUE TO CRACKED SCROLL. DISASSEMBLY INSPECTION REVEALED: PITTED BEYOND SERVICEABLE LIMITS ON MATING RING MATING SURFACE. INSTALLED A NEW MATING RING.SDR HEEA0016168Rear Diffuser · crackedENGINE REMOVED DUE TO F.O.D. UPON INSPECTION OF COMPRESSOR PARTS NOTED: CRACKING AND LIFTING BEYOND SERVICEABLE LIMITS ON REAR DIFFUSER MAJOR SEAL.SDR HEEA0016120Support · bentRECEIVING INSPECTION REVEALED: BEND BEYOND SERVICEABLE LIMITS ON G.P. SUPPORT PRESSURE OIL STRUT. PART OVERHAULED W/O 16671.SDR HEEA0016051Spur Gear · wornENGINE REMOVED DUE TO TURBINE OVERHAUL. INSPECTION OF COMPRESSOR PARTS NOTED: SPLINE WEAR BEYOND SERVICEABLE LIMITS ON SHAFT SPLINES.SDR HEEA0015996Housing · mismanufacturedRECEIVING INSPECTION REVEALED: UNABLE TO OBTAIN IMPELLER TO SHROUD HOUSING THROAT CLEARANCE. TRIED SHROUD HOUSING ON SEVERAL IMPELLERS. INSTALLED A DALLAS AIRMOTIVE OVERHAULED SHROUD HOUSING.SDR HEEA0015952Pump Assy · mismanufacturedRECEIVING INSPECTION REVEALED: DEEP CASTING FLAWS BEYOND SERVICEABLE LIMITS IN OIL PUMP ASSY SCAVENGE PORT.SDR CA980916068Bearing · loose(CAN) ON DAILY INSPECTION, TAIL ROTOR BLADE OUTBOARD BEARING LOOSE AUXILIARY IN THE BLADE. PART TC:SDR CA980916069Trunnion · brinnelled(CAN) DURING TAIL ROTOR BLADE REMOVAL, TRUNNION FELT RATCHETY AND HAD NO PRELOAD. TRUNNION RACE BRINNELLED BEYOND LIMITS.SDR HEEA0015891Actuator · failedACTUATOR WILL NOT RETRACT.SDR HEEA0015717Rear Support · flakingENGINE REMOVED DUE TO METAL IN OIL. COMPRESSOR DISASSEMBLED DUE TO N-1 DRAG ON TEST CELL. DISASSEMBLY INSPECTION REVEALED: LIFTING AND FLAKING BEYOND SERVICEABLE LIMITS ON REAR SUPPORT MAJOR SEAL. INSTALLED AN H-S TOOL & PARTS, INC. REAR SUPPORT.SDR HEEA0015732Indicator · inoperativeFUEL LOAD METER INOPERATIVE.SDR HEEA0015636Fuel Control · leakingAIR LEAKING FROM DERICH ADJUSTMENT. CAUSING EXCESSIVE ADJUSTMENT ON N2. INSPECTED UNIT WHEN RECEIVED IN SHOP. APPLIED SHOP AIR TO FUEL CONTROL AND LEAK CHECKED UNIT. FOUND NO LEAKS AT START DERICH SECTION AS STATED IN DESCRIPTION OF DIFFICULTY. NOTE: ONLSDR HEEA0015215Spline Adapter · mismanufacturedRECEIVING INSPECTION REVEALED: MEASURED .0005 INCH BELOW SPECS (.9855 INCH - .9860 INCH) ON SPLINE ADAPTER OUTSIDE DIAMETER.SDR AU980887Ring · damaged(AUS) COMPRESSOR NR 1 BEARING CARBON SEAL MATING RING WEARING ON IMPELLER BEARING SPINDLE. SPINDLE WAS WORN TO APPROXIMATELY 33 PERCENT OF ITS ORIGINAL DIAMETER. METAL CONTAMINATION.SDR AU980743Bearing · corroded(AUS) TAIL ROTOR BEARING SEIZED DUE TO RUST. DURING REMOVAL, THE BEARING DISINTEGRATED. EVIDENCE OF BRINELLING ON THE INNER AND OUTER RACES CONSISTENT WITH A MISSING NEEDLE ROLLER. THE AIRCRAFT FLIES THROUGH RAIN ON A REGULAR (DAILY) BASIS.SDR AU980744Bearing · cracked(AUS) TAIL ROTOR BLADE FEATHERING BEARING CRACKED. PART TOTAL CYCLES: 640.SDR HEEA0014516Actuator · erraticDROOP COMP ACTUATOR INTERMITTENTLY ERRATIC.SDR HEEA0014548Actuator · inoperativeMAIN ROTOR CONTROL ACTUATOR INOPERABLE.SDR HEEA0014549Actuator · inoperativeACTUATOR INOPERATIVE.SDR HEEA0014550Actuator · inoprativeACTUATOR INOPERATIVE.SDR HEEA0014473Actuator · inoperativeACTUATOR INOPERATIVE.SDR HEEA0014487Spline · wornPUMP HAS EXCESSIVE DRIVE SHAFT SPLINE WEAR AND GEAR SPLINE WEAR.SDR HEEA0014488Metering Valve · faultyENGINE DECELERATED. BENCH TESTED UNIT AS RECEIVED. FOUND FLOWS TO HANG. INSPECTED UNIT AND FOUND METERING VALVE SLEEVE, P/N 2537739. UNIT TESTED. REPLACED METERING VALVE SLEEVE, P/N 2537739, WITH SERVICEABLE METERING VALVE SLEEVE, P/N 2537739. BENCH TESTSDR HEEA0014215Pump Assy · defectiveRECEIVING INSPECTION REVEALED: DEEP CASTING FLAWS BEYOND SERVICEABLE LIMITS ON PUMP ASSY. SCAVENGE PORT. INSTALLED A SERVICEABLE PUMP ASSY.SDR HEEA0014203Support · mismanufacturedRECEIVING INSPECTION REVEALED: MISALIGNMENT OF G.P. SUPPORT NOZZLE SLOTS. TRIED SEVERAL NR2 NOZZLES UNABLE TO INSTALL INTO G.P. SUPPORT SLOTS.SDR HAI00000002Bleed Valve · failedENGINE FAILED POWER ASSURANCE CHECK DURING TEST FLIGHT FOLLOWING INSTALLATION OF ENGINE FOLLOWING EXTENDED MAINTENANCE INCLUDING BLEED VALVE OVERHAUL. INSTALLED REPLACEMENT OVERHAULED BLEED VALVE AND ENGINE TESTED AT +10%SDR UTVR98001Bearing · failedAFTER CAREFUL INSPECTION OF THE GP TURBINE AND RELATED COMPONENTS, OBSERVED THE NR 8 BEARING HAD CATASTROPHICALLY FAILED CAUSING THE CHIP DETECTOR IN THE COCKPIT TO INDICATE. THE AIRCRAFT WAS IMMEDIATELY GROUNDED. THE SUBSEQUENT INSPECTION REVEALED NO TELLTASDR HEEA0014007Carbon Seal · wornENGINE REMOVED DUE TO CRACKED SCROLL. INSPECTION OF COMPRESSOR PARTS REVEALED: WORN BEYOND SERVICEABLE LIMITS ON SEAL TANGS AND TANG SLOTS. INSTALLED A NEW SEAL.SDR CA980421028Skin · damaged(CAN) THE MOUNTING FLANGE OF THE MAINTENANCE STEP HAS A CAVITY WHICH ALLOWS MOISTURE TO COLLECT AND FREEZE/EXPAND CAUSING A RUPTURE IN THE SKIN OF THE A/C AND DAMAGE TO THE HONEYCOMB BENEATH.SDR HEEA0013833Fuel Pump · wornWORN DRIVE SHAFT SPLINES AND GEAR SPLINES.SDR HEEA0013502Fuel Pump · wornFUEL PUMP HAS WORN SPLINES.SDR 98ZZZX1701Tube · chafedWHILE REMOVING RENTAL ENGINE AND TRANSFERRING HARD LINE P/N 23058110-A FROM RENTAL ENGINE TO ORIGINAL ENGINE, SEVERE CHAFING NOTED UNDER ADEL CLAMP. THIS IS SCAVENGE OIL LINE FROM BOTTOM OF COMPRESSOR TO THE N1 SIDE OF GEARBOX. ABRASIVE DUST AND AIRBORNE DIRSDR HEEA0013330Shroud Housing · mis mfgRECEIVED SHROUD HOUSING AND UNABLE TO OBTAIN THROAT CLEARANCE BETWEEN SHROUD AND IMPELLER. NOTE: TRIED ON SEVERAL IMPELLERS. INSTALLED A DALLAS AIRMOTIVE OVERHAULED SHROUD ASSY.SDR HEEA0013187Fuel Pump · wornFUEL PUMP DRIVE SHAFT, SHOW SIGNS OF STEP WEAR ON SPLINES.SDR 98ZZZX805Governor · malfunctionedDURING TAKEOFF, ROTOR RPM DECAYED TO 97 PERCENT. WOULD NOT RECOVER. PILOT LANDED WITHOUT INCIDENT. ALL TROUBLESHOOTING REVEALED NO DISCREPANCIES, COULD NOT DUPLICATE PROBLEM. MAINTENANCE CHANGED GOVERNOR FOR PRECAUTION. REF: ALLSION C-30 IPC, CHAPTER 73-SDR CA980305001Tube · worn(CAN) VERTICAL TUNNEL AND FORWARD PILOT AND COPILOT SEAT AREAS OPENED, AND THEN WHILE MOVING COLLECTIVE, LEVER WAS FOUND CONTACTING BOTH OIL PRESSURE AND TORQUE PRESSURE LINES. TUBES WERE WORN AND PROTECTIVE PAINT WAS WORN OFF OF LEVER. TUBES ADJUSTED FOR CLSDR HEEA0012759Support · damagedRECEIVING INSPECTION REVEALED: DAMAGED ON GP SUPPORT AFT FLANGE. INSTALLED A DALLAS AIRMOTIVE OVERHAULED GP SUPPORT.SDR HEEA0012719Fuel Control · malfunctionFUEL CONTROL DEFECTIVE. FOUR REMOVALS FOR STARTING PROBLEMS. 1 EACH LIGHT OFF TEMP. TOO HIGH, COULD NOT ADJUST. 3 EACH REMOVALS FOR HANG STARTS AT 35% TO 40%, COULD NOT ADJUST. SENT TO ALLIED SIGNAL BENDIX WEST COAST FOR WARRANTY REPAIR.SDR HEEA0012589Nozzle · defectiveDURING MACHINING COATING FLAKING OUT OF NR4 NOZZLE NR4 TIP PATH.
Back to Allison 250-C30P