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 02082008203CGShaft · strippedWHILE ENROUTE, PILOT EXPERIENCED A HYDRAULIC FAILURE. PULLING THE CIRCUIT BREAKER HAD NO EFFECT (SYSTEM IS AUTOMATICALLY ON WHEN POWER IS REMOVED). PILOT THEN TURNED SWITCH OFF AND PROCEEDED WITH AN UNEVENTFUL LANDING. UPON INSPECTION IT WAS DETERMINED THATSDR CA080104005Yoke · incorrect(CAN) FOUND TO BE WRONG, YOKE M/R HUB ASSY, WITH THE INCORPORATION OF STC NR SH296NM, INSTALLATION OF ENGINE. CORRECT PN OF YOKE SHOULD BE 206-011-149-101. (TC NR 20080104005)SDR AC2A118583Float · leakingLEAKED DURING 6 MONTH INSPECTION.SDR HEEA118058Filter · smokeSMOKE IN COCKPIT. TURNED OFF LANDING LIGHT AND SMOKE REDUCED. LANDED IN A BACKYARD. REPLACED NOISE FILTER IN PULSE LIGHT SYSTEM.SDR AC2A118586Bearing · wornTAIL ROTOR HAS WORN FEATHERING BEARINGS.SDR AC2A118587Bearing · wornTAIL ROTOR HAS WORN FEATHERING BEARINGS.SDR CA071023002Nut · loose(CAN) WHILE INVESTIGATING MAST BEARING PLAY. UNABLE TO REMOVE NUT (BEARING TORQUED). MAST ASSY SENT TO MFG FOR INVESTIGATION. NEW MAST ASSY PROVIDED BY MFG (TC NR 20071023002).SDR CA071023004Nut · failed(CAN) WHILE INVESTIGATION MAST BEARING PLAY, UNABLE TO REMOVE NUT (BEARING TORQUE). MAST ASSEMBLY SENT TO MFG FOR INVESTIGATION. NEW MAST ASSEMBLY PROVIDED BY MFG. (TC NR 20071023004)SDR EVAC010192007Unknown · smokeEXCESSIVE SMOKE FROM EXHAUST ON SHUTDOWN.SDR HEEA116944Compressor · stalledPILOT REPOSITIONED THE AIRCRAFT FROM THE AIRFIELD TO A HELIPAD AT CUSTOMER'S LOCATION. DURING TAKEOFF TO A HOVER AT THAT LOCATION, PILOT HEARD A LOUD POPPING NOISE AND THE AIRCRAFT LOST SOME POWER. PILOT SUSPECTED COMPRESSOR STALL, SHUTDOWN. MAINTENANCE INSDR 2007FA0000887Turbine Wheel · failedAFTER 13 HOURS OF OPERATION SINCE OVERHAUL, DURING A POWER CHECK, THE TURBINE ASSY FAILED CAUSING THE FORCED LANDING OF THE HELICOPTER. FORCED LANDING CAUSED SUBSTANTIAL DAMAGE TO THE AIRCRAFT. (K)SDR CA070719008Tube · cracked(CAN) OIL LINE CRACKED IN BEND JUST FWD TO FLARED FITTING. SUSPECT FATIGUE FROM IMPROPER TIGHTENING AT SOME POINT THROUGHOUT THE LIFE OF THE LINE. SUSPECT THIS TUBE WAS ORIGINAL EQUIPMENT. UNABLE TO DETECT LEAK ON GROUNG RUN LEAK CHECK AS THE MAINROTOR TRANSMISDR CA070718005Combustion Liner · cracked(CAN) COMBUSTION LINER REMOVED AND INSPECTED DURING UN-RELATED ENGINE MAINTENANCE. FOUND CRACKED AND WARPED BEYOND LIMITS. (TC NR 20070718005)SDR HEER117209Fitting · crackedUPPER LT TAILBOOM ATTACH FITTING CRACKED. REPLACED FITTING.SDR AC2A115394Wire Harness · damagedTHE MECHANIC WAS PERFORMINGGA DAILY ENGINE WASH. THE AIRCRAFT ENGINE WAS MOTORED AND THE WATER WAS SPRAYED INTO THE ENGINE. AFTER COAST DOWN THE BATTERY SWITCH WAS TURNED OFF TO LET THE REMAINING WATER DRAIN OUT. WHEN THE BATTERY SWITCHED WAS TURNED OFF THE SSDR CA070202006Diode · failed(CAN) SINCE THE DIODE FAILED, A DIRECT SHORT TO GROUND OCCURED. CAUSING THE BATTERY CIRCUIT WIRING TO BURN OFF ITS SHIELDING AND THE DIODE PIG TAIL FROM X1 TO X2 ON THE RELAY HEATED UP TO THE POINT OF BREAKING, FLAME WAS PRESENT. THE BATTERY SWITCH WAS NOT DSDR CA070126006Tail Boom · damaged(CAN) UPON CHANGING FORMER P/N 206-020-113-093 ON VERTICAL FIN, DAMAGE/GOUGING DETECTED ON THE IB FIN SKIN WITHIN CLOSE PROXIMITY TO VERTICAL FIN MOUNTING HOLE. IT IS SUSPECTED THAT WHEN ORIGINALLY FITTING THE COWLS THAT THE FORMER WAS TRIMMED AND THAT AT THISSDR EOP2007F00000Fitting · out of alignmentNEW FITTING WAS ORDERED TO REPLACE WORN FITTING. WHEN NEW FITTING WAS INSTALLED AND ELEVATOR WAS BEING REINSTALLED IT WAS OUT OF ALIGNMENT AND BINDING. THE NEW FITTING WAS THEN COMPARED TO THE OLD FITTING, THE NEW FITTING WAS FOUND TO BE OUT OF ALIGNMENT BY SDR CA061208003Tach Generator · worn(CAN) GREASE FOUND WASHED OUT CAUSING PREMATURE WEAR OF DRIVE SPLINES LEADING TO HYDRAULIC SYSTEM FAILURE. 298.7 HRS SINCE PREVIOUS LUBRICATION. (TC NR 20061208003)SDR CA061208004Pump · lack of lube(CAN) GREASE FOUND WASHED OUT CAUSING PREMATURE WEAR OF DRIVE SPLINES LEADING TO HYDRAULIC SYSTEM FAILURE. 198.3 HRS SINCE PREVIOUS LUBRICATION. (TC NR 20061208004)SDR HEEA111931Seal · unknownDURING FLIGHT TRANSMISSION OIL PRESSURE DROPPED TO ZERO. TRANSMISSION OIL PRESSURE CAUTION LIGHT CAME ON, TEMP ROSE TO 95 DEGREES C, LANDED ASAP- MP175. REPLACED FWU SEALS, AFT SEAL DETERMINED TO BE TRANSFERRING OIL TO ENGINE.SDR HEEA111739Hose · failed(3) MINUTES AFTER TAKEOFF, IN CRUISE, TORQUE GAUGE WENT TO 10. ENGINE OIL PRESSURE AND ALL OTHER GAUGES WERE NORMAL. LANDED AT MOB908A ONLY TO NOTICE OIL LEAKING FROM FRONT, LT PORTION OF THE ENGINE COMPARTMENT. MAINTENANCE FOUND THE ENGINE TORQUE INSTRUMENSDR CA070119006Spring · broken(CAN) THE STARTER GENERATOR WAS THEN INSTALLED. UPON FIRST GROUND RUN OF THE AIRCRAFT, SPARKS WERE NOTICED TO BE COMING FROM THE BRUSH AREA. THE AIRCRAFT WAS SHUTDOWN, THE STARTER GENERATOR WAS REMOVED. UPON REMOVAL WE HEARD SOMETHING LOOSE/RATTLING AROUND. WSDR CA061011012Gland Nut · cracked(CAN) DURING THE FIRST OVERHAUL OF THREE SERVO ACTUATORS 2 WERE FOUND TO HAVE CRACKS ON THE GLAND THAT RETAINS THE PISTON SEAL. BOTH SERVO ACTUATOR GLAND ASSEMBLIES WERE CRACKED IN THE SAME AREA. (TC NR 20061011012)SDR ALGR111218Panel · crackedROOF PANEL CRACKED 2 PLACES ON LT AFT TRANSMISSION MOUNT.SDR CA060927001Scroll · cracked(CAN) DURING SCHEDULED 100/300 HR INSPECTION COMPRESSOR SCROLL FOUND CRACKED ON VISUAL INSPECTION. A/C GROUNDED AND COMPRESSOR REPLACED. RECOMMEND BETTER DAILY INSPECTIONS BEFORE FIRST FLIGHT. (TC NR 20060927001)SDR ALGR111208Panel · crackedROOF PANEL CRACKED APPROX. 1.6.SDR ALGR111207Panel · crackedROOF PANEL CRACKED APPROX 6.3.SDR ALGR110830Coupling · mismanufacturedON INSPECTION OF FLEX COUPLING, FOUND PART TO BE MISMANUFACTURED ON END FACE SPLINES. REPLACED PART W/SERVICEABLE PART.SDR AC2A110583Bleed Valve · failedON TAKEOFF FROM DRILLING RIG, WHILE INCREASING COLLECTIVE, THE HELICOPTER MADE (2) REPORTS (POPS). ABORTED TAKEOFF. DISCOVERED DEFECTIVE ENGINE BLEED VALVE. INSTALLED SERVICABLE ENGINE BLEED VALVE.SDR 2006FA0000772Coupling · failedNR 2 COUPLING FAILURE, WHICH CAUSED A NI FAILURE, AND INNER SHAFT FAILURE, POWER TURBINE ROTOR DECOUPLING AND GAS PRODUCER OVERTEMP. (K)SDR CA060803004Hose · leaking(CAN) UPON LANDING AND SHUTDOWN ON LAST UNEVENTFULL FLIGHT OF THE DAY. PILOT REPORTED HYD FLUID ON SIDE OF A/C. A/C GROUNDED UNTIL INSP, UPON INSP. HYD PRESSURE FEED LINE FOUND LEAKING. LINE REPLACED WITH SEVICEABLE UNIT. RECOMMEND OPERATORS AND MAINT FACILITISDR AC2A110424Compressor · stalledHEARD A LOUD POP FOLLOWED BY YAWING AND FLUCTUATIONS IN INDICATED TORQUE. PILOT IMMEDIATELY LOWERED THE COLLECTIVE MAINTAINED AIRSPEED, AND CROSSCHECHECKED THE INSTRUMENTS.I PILOT INITIATED A TURN TO LAND BACK AT SP 58D. AFTER LANDING THE PASSENGERS GOT OUT TSDR HEEA109523Governor · malfunctionedIN FLIGHT DROOP. HELICOPTER LANDED ON BEACH. MAINTENANCE REPLACED GOVERNOR.SDR CA060504003Bearing Cage · failedBEARING, REMOVED FROM GEARBOX DURING 3500 HOURS INSPECTION, HAS BEEN PREVIOUSLY ASSEMBLED WITH ONE BALL NOTICEABLY SMALLER THAN THE OTHER BALLS IN THE BEARING ASSEMBLY. REF ROLLS-ROYCE IPC, 14W4, 72-60-00, FIG.2, P.5, ITEM 39.SDR CA060413005Fuel Control · brokenONE OF THE FUEL CONTROL BYPASS COVER SCREWS BROKE CAUSING FUEL TO LEAK INTO THE ENGINE BAY. THIS IS TO BE INSPECTED EVERY 100 HOURS IAW ALLISON 250 C30 CEB A-73-3075R1 WHICH IT WAS.SDR CA060316003Pump · leakingAFTER COMPLETION OF 300 HR ENGINE INSPECTION ENGINE WAS BEING GND RUN AND LEAK CHECKED. FUEL WAS NOTICED IN ENGINE COMPARTMENT AFTER INVESTIGATING DRAIN LINE WAS REMOVED FROM OVERBOARD DRAIN FOR FUEL PUMP AND EXCESSIVE LEAK WAS DETECTED. PUMP REMOVED AND REPSDR ALG2006F00026Starter Gen · malfunctionedIN FLIGHT, AMMETER FLUCTUATED ZERO TO RED LINE NUMEROUS TIMES THEN DROPPED TO ZERO. REMOVED AND REPLACED STARTER/GENERATOR. FUNCTION CHECKED GOOD. (K)SDR ALG2006F00037Relay · failedIN LEVEL FLIGHT, BATTERY RELAY ILLUMINATED. MAINTENANCE ACTION: REPLACED RELAY. (K)SDR ALG2006F00007Volt Regulator · malfunctionedGENERATOR FAIL LIGHT ILLUMINATED ON TAKEOFF. ATTEMPTED RESET AND SMELLED ACRID BURNING SMELL. LANDED AIRCRAFT AT THE NEAREST SAFEST PLACE. REMOVED AND REPLACED VOLTAGE REGULATOR WITH SERVICEABLE UNIT. ALL IAW MM. (K)SDR ALG2006F00019Line · leakingDURING HOT REFUEL, OIL WAS OBSERVED LEAKING FROM THE AIRCRAFT. REMOVED AND REPLACED ENGINE OIL PRESSSURE LINE WITH SERVICEABLE LINE. (K)SDR ALG2006F00020Engine · making metalENGINE CHIP LIGHT ILLUMINATED ON START. PILOT FOLLOWED ENGINE CHIP LIGHT PROCEDURE. PILOT FOUND NO METAL ON CHIP PLUG AND REPLACED SAFETY WIRE. COMPLY WITH 30 MINUTE PENALTY RUN. AFTER RETURNING TO BASE NOTIFIED MAINTENANCE. ON POST FLIGHT EXAMINATION OF SDR 2005FA0001612Diffuser · separatedCOMPRESSOR REPORTED STALLING. VERIFIED ON TEST CELL. UPON DISASSEMBLY DIFFUSER VANE RING WAS FOUND TO HAVE THE AFT STUD BAND (RING) SEPARATED FROM THE DIFFUSER ASSEMBLY BODY. DIFFUSER INSTALLED NEW AT LAST OVERHAUL 449.3 HOURS PRIOR.SDR ALG2005F00122Actuator · out of adjustON TAKEOFF, RPM ROSE TO 104 PERCENT, THE PILOT WAS UNABLE TO BEEP DOWN TO NORMAL RANGE, RETURNED TO DEPARTURE. THE MECHANIC FOUND THE LINEAR ACTUATOR RANGE WAS SET TOO HIGH, HE ADJUSTED THE BEEP RANGE TO WITHIN THE LIMITS AND THE AC WAS RETURNED TO SERVICE. SDR ALG2005F00101Starter Gen · failedSTARTER/GENERATOR FAILED ENROUTE TO WC 586. RETURNED TO BASE. REMOVED AND REPLACED STARTER/GENERATOR. (K)SDR ALG2005F00102Starter Gen · failedSTARTER/ GENERATOR FAILED ENROUTE TO WC 586, RETURNED TO BASE. REMOVED AND REPLACED STARTER/GENERATOR. (K)SDR ALG2005F00092Wire · brokenGENERATOR LIGHT ILLUMINATED IN FLIGHT. PERFORMED EMERGENCY PROCEDURE IAW CHECKLIST. FOUND BROKEN WIRE AT BATTERY CONTROL RELAY. REPLACED TERMINAL END OF WIRE. REPLACED STARTER/GENERATOR BRUSHES DUE TO INTERMITTENT OPERATION DURING OPS, CHECK. (K)SDR ALG2005F00103Bleed Valve · failedON TAKEOFF, ENGINE COMPRESSOR STALLED AT 80 PERCNET. LANDED AIRCRAFT AND NOTIFIED MAINTENANCE. PERFORMED MM 179-04. NO DEFECTS NOTED. REMOVED AND REPLACED BLEEDVALVE. (K)SDR ALG2005F00104Windshield · crackedA CRACK WAS NOTICED IN THE UPPER EDGE OF THE PILOTS WINDSCREEN. REPLACED BOTH LT AND RT WINDSHIELD. (K)SDR ALG2005F00107Bleed Valve · failedON TAKEOFF, ENGINE COMPRESSOR STALLED AT 80 PERCENT. LANDED AIRCRAFT AND NOTIFIED MAINTENANCE. PERFORMED MM, NO DEFECTS NOTED. REMOVED AND REPLACED BLEEDVALVE. (K)
Back to Allison 250-C30P