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 EVCA03312026Battery · unserviceableELECTRICAL FAILURE, COMMS, NAV, AUTO PILOT.SDR EVCA20250623001Pump · failedHYDRAULIC FAILURESDR EVCA20240903001Blower Motor · odorSTRONG ELECTRICAL BURNING SMELL IN CABIN. TURNED OFF THE AC AND THE SMELL WENT AWAY.SDR EVCA202408120001Attach Fitting · crackedUPPER LEFT TAILBOOM ATTACHMENT FITTING, TAILBOOM SIDE, CRACKED FROM EDGE TO EDGE ACROSS TWO FWD OUTBOARD RIVETSSDR EVCA20240810001Stiffener · crackedTHE STATION 145 CLIP IS CRACKED BY A RIVET HOLE ON THE RIGHT HAND SIDE.SDR EVCA20240506001Engine · odorABORT DUE TO STRONG FUEL SMELL WITHIN AIRCRAFTSDR YTRA2024012500001Engine · shutdownIN FLIGHT ENGINE SHUTDOWN.SDR YTRA202402020001Blades · separatedIN FLIGHT ENGINE SHUTDOWN. ON TEARDOWN INSPECTION IT WAS DISCOVERED THAT THE 1ST STAGE TURBINE WHEEL BLADES HAD SEPARATED FORM THE BODY OF THE WHEEL. SEE BLOCK 6 BELOW FOR DETAILED INFORMATION ON WHEEL.SDR EVCA202310110001Unknown · unknownCREW AND PILOT NOTICED ACRID SMELL IN AIRCRAFT. CREW INITIALLY UNSURE WHETHER IS WAS ENVIRONMENTAL OR INSIDE AIRCRAFT. PILOT SAID SMELL WAS INDICITAVE OF A ELECTRICAL ISSUE OR BURNING WIRES. SMELL SUBSIDED AFTER OPENING WINDOWS. ON THE SUBSEQUENT FLIGHT, THE SSDR EVCA09262023Frame · crackedCRACK IN R/H ROLLOVER CLOSE OUT PANEL APPROX 1 INCH LONG EXTENDING TO EDGE OF PANEL. P/N 206-031-117-443. THIS PART WILL PROBABLY HAVE TO BE REMOVED TO REPAIR THE FRAME MIGHT CONSIDER REPLACEMENT OF PANEL IF PROCURABLE.SDR 2023FA0000571Fuel Cell · abnormalPMA REPLACEMENT FUEL CELL IS CAUSING FUEL TO TURN GREEN. FUEL WAS SENT OUT TO A LAB TO BE TESTED AND TESTS WERE INCONCLUSIVE AS TO THE SUBSTANCE BUT IT IS SUSPECTED TO BE A DYE. THE MANUFACTURE WAS CONTACTED AND DENIES PUTTING ANY DYE IN THE TANK DURING THEIR SDR YV3R2023100200581Wire Harness · malfunctionedCUSTOMER REPORTED HARNESS ASSEMBLY P/N: F049-012 MALFUNCTIONED, N1 INDICATOR FLUCTUATING DURING FLIGHT.SDR EVCA202303220001Pan · leakingFUEL SMELL IN AIRCRAFT CABIN. OIL/FUEL SEEP FOUND UNDER ENGINE PAN. CLEANED, INSPECTED, RESEALED ENGINE PAN DRAIN HOLE.SDR 2022F00465Hook · failedDURING SIDE PULL OPERATIONS, THE SIDE PULL HOOK SHAFT ASSEMBLY SHEARED IN HALF AND DEPARTED THE AIRCRAFT. VISUAL INSPECTIONS INDICATE METALLURGY ISSUES IN THE APPARENT MATERIAL. THE HOOK HAS BEEN SENT OUT FOR FURTHER DAMAGE EVALUATION TO DETERMINE CAUSE OF FASDR EVCA20220825001Unknown · odorFUEL SMELL IN HOVER AND WHEN BANKING RIGHT. PILOT COULD NOT SMELL FUEL. ONE CREW CAN SMELL FUEL IN AFT CABIN. NO FUEL LEAKS PRESENT. CANNOT SEAL HOSE ON END TO LEAK CHECKSDR 2020FA0000167Fuel Cell · leakingLEFT FUEL CELL DEVELOPED LEAK DUE TO RUBBING WITH VERTICAL SUPPORTS AT CENTER BEAM STRUCTURE. INSTALLED
ANTI-CHAFF TAPE TO ALL VERTICAL STIFFENERS. REPLACED FUEL CELL WITH REPAIRED LEFT CELL. NOTED THAT THE LAST
SEVERAL NEWER MANUFACTURED HELICOPTERS LACKED SDR YV3R2020092900355Dual Tachometer · defectiveCUSTOMER REPORTED DUAL TACHOMETER ASSEMBLY P/N: F792-1 NEEDLES STICK OCCASIONALLY DURING START-UP.SDR EVCA202009183Combustion Liner · crackedDURING INSPECTION, CRACKS WERE VISUALLY FOUND ON THE ENGINE COMBUSTION LINER.SDR YV3R201911220214Sensor · defectiveCUSTOMER REPORTED SENSOR ASSEMBLY P/N: G768-3 IS DEFECTIVE.SDR 2020FA0000043Ring · crackedDURING AN ANNUAL INSPECTION OF THE AIRFRAME AND 200HR INSPECTION OF THE ENGINE, A CRACK IN THE SLINGER RING DISK OF THE ENGINE SHAFT WELDMENT WAS DISCOVERED. THE CRACK ANIMATES FROM A MANUFACTURING HOLE IN THE SLINGER RING DISK AND MOVES TOWARDS THE CENTER WHSDR CA190814007Clamp · ruptured(CAN) INITIAL INSTALLATION OF STARTER/GENERATOR P/N: RR30000412, WITH ORIGINAL QAD CLAMP ALWAYS INSTALLED IN ACCORDANCE WITH MANUFACTURER RECOMMENDATIONS OPERATORS MAINTENANCE MANUAL 80-11-10-400-801. DURING THE FIRST ENGINE CRANK AFTER STARTER/GEN INSTALLATIOSDR CA190403018Mount · cracked(CAN) BATTERY MOUNTING SHELF PN G249-1 FOUND CRACKED AT CONTACT WITH BATTERY FWD AND AFT OUTBOARD CORNERS. (TC# 20190403018)SDR DXMR20200219163Bearing · seizedDURING EXTREME COLD WEATHER, SWASHPLATE UNIBALL SEIZED ON M/R DRIVESHAFT CAUSING STIFF COLLECTIVE FORCES.SDR H44R2016051300001Cover Plate · wornDURING REPLACEMENT OF THE OVER RUNNING CLUTCH, A SPECIAL TOOL IS REQUIRED TO TORQUE THE INTERNAL WRENCHED RETENTION NUT INSIDE THE PTO SHAFT OF THE ENGINE. WHEN THE TOOL WAS WITHDRAWN PART OF IT REMAINED STUCK IN THE NUT, THE TECH DID NOT REALIZE THAT THIS HASDR 2016FA0000011Angle · crackedTHE ANGLE HAS CRACKED ON ALL OF OUR ACFT. THE ANGLE IS RIVETED AND SCREWED INTO PLACE DIRECTLY BEHIND THE LOWER LT ENGINE MOUNT. CAUSE OF THE CRACK IS UNKNOWN, VIBRATION LEVELS WERE WITHIN ACCEPTABLE LEVELS AND NO UNUSUAL WEAR WAS NOTED. POSSIBLE CAUSE IS SDR CA151009003Shaft · seized(CAN) WHILE TROUBLESHOOTING, AN UNCOMMANDED TORQUE OSCILLATION IN FLIGHT WHICH WAS DISCOVERED TO BE A TURBINE PROBLEM, THE ANOMALY WITH THE RECENTLY REPLACED GOVERNOR WAS DISCOVERED. THE SHAFT/POINTER ON THE GOVERNOR WAS FOUND SEIZED. WITH AN ABNORMAL AMOUNT SDR CA151005009Line · collapsed(CAN) INLET HOSE FOR FUEL, COLLAPSED CAUSING THE NR 1 ENGINE TO FLAMEOUT.SDR CA150706012Jam-Nut · loose(CAN) DURING ARRIVAL INSPECTION, ONE OF THE MR PITCH CHANGE LINKS WAS FOUND TO HAVE BOTH THE UPPER & LOWER JAM NUTS LOOSE. THE UPPER NUT HAD THE REQUIRED SAFETY BUT NO TORQUE ON EITHER END OF THE LINK.SDR HQPR2015FA0000080Drive Gear · failedDURING FLIGHT PILOT NOTICED A N2 PERCENT ROTOR/ENGINE TACHOMETER FLUCTUATION. OPERATING PERCENT IS 103.0 PERCENT AND WOULD INCREASE 1 TO 2 PERCENT ABOVE OR 1 TO 2 PERCENT BELOW DEPENDING ON THE POSITION OF THE COLLECTIVE WHEN APPLYING OR DECREASING POWER DEMASDR EVCA20140717001Mount · corrodedDURING ACFT ENG CHANGE MX NOTED LT & RT ENG MOUNT LEGS, PN 206-064-106-101 & 206-064-107-103 SEVERELY CORRODED & REQUIRES REPLACEMENT.SDR CA140627013Turbine Wheel · failed(CAN) DURING FLIGHT, THE PILOT HEARD AN ABNORMAL NOISE, SAW N1 AND N2 FLUCTUATIONS AND OBSERVED A CHIP LIGHT. HE LANDED IMMEDIATELY USING ENGINE POWER. THE HELICOPTER WAS TRANSPORTED FOR TROUBLESHOOTING. THE OIL SYS WAS FLUSHED. DURING THE SUBSEQUENT GROUNSDR CA140627014Nut · missing(CAN) TURBINE ATTACH HARDWARE FOUND LOOSE AND 1 MISSING.SDR Y3AR2014FA0000403Combustion Case · leakingOUTER COMBUSTION CASE FOUND TO BE LEAKING AT WIRE MESH PATCH COVERING BUTT WELD DURING OUTER COMBUSTION CASE PRESSURE TEST.SDR CA140509006Nut · cracked(CAN) DURING FIRST 100 HR INSPECTION, SPOTTED GAP, VISIBLE BOLT SHANK, BETWEEN AIRFRAME MOUNTED SPHERICAL BEARING AND F239-2, RT AFT LANDING GEAR STRUT ASSY. FURTHER INSPECTION REQUIRED REMOVING STRUT FAIRING, AND BONDED RAIN CAP TO GAIN ACCESS TO THE NUT. FSDR YTRA20140313001Engine · making metalTHE PILOT MADE A PRECAUTIONARY LANDING DUE TO AN ENG CHIP LIGHT ILLUMINATION.SDR 8MHR201311050001Combustion Liner · failedTHE COMBUSTION LINER FAILED. THE TABS HOLDING THE AFT OUTER SKIRT FAILED, ALLOWING THE SKIRT TO SEPARATE, AND 2 OF THE TABS WERE INGESTED IN THE TURBINE CAUSING SERIOUS DAMAGE. ALL 4 TURBINE WHEELS HAVE FOD AND ARE SCRAP. THE TURBINE HAS APPROXIMATELY 800 HOSDR 2013FA0000574Diffuser · crackedENGINE WAS MAKING A HIGH PITCHED NOISE. REMOVED ENGINE ASSY AND DISASSEMBLED. FOUND COMPRESSOR DIFFUSER VANE ASSY CRACKED IN SEVERAL SPOTS AT THE BRAZE JOINTS. THIS PART WAS O/H 529.2 HRS BEFORE. THIS IS THE 3RD VANE ASSY WE HAVE FOUND LIKE THIS. PROBABLESDR CA131022003Swashplate · damaged(CAN) DURING A 100 HR INSPECTION, WE HAVE FOUND THAT 2 ALLEN BOLTS FROM THE SWASHPLATE WAS CHAFING ON THE SLIDER TUBE. THE DAMAGE WAS LOCATED ON THE FORWARD FACE OF THE TUBE. FOUND THAT THIS CONDITION HAPPEN DURING FLIGHT CONTROLS CHECK WITH THE COLLECTIVE USDR AC2A07907102013Compressor · stalledDURING CLIMB OUT, WHILE PASSING THROUGH 200 FT, THE HELICOPTER EXPERIENCED A COMPRESSOR STALL. TORQUE READINGS WERE MAXED OUT AND THE ACFT EXPERIENCED A RT THEN LT YAW.SDR ALGA050820137398Strap · deterioratedFOUND STRAP MATERIAL DETERIORATED AND WIRES EXPOSED ON STRAP.SDR 2012FA0000814Skin · cracked1" CRACK ON LT SIDE OF TRANSMISSION UPPER CABIN ROOF SHELL STARTING AT A ROW OF RIVETS, SECOND INBD RIVET FS 146.3, LBL APPROX 8.65. REPAIRED IAW REPAIR NR 12RL-113.SDR 2012FA0000769Longeron · crackedCRACK FOUND ON LONGERON, ORIGINATING FROM UPPER FWD OTBD RIVET AT BS 228.SDR ALGA2012110729129Unknown · unknownON INITIAL ROLL UP OF THROTTLE, THE RPM WAS NOTED AS WELL ABOVE 101 PERCENT AND WAS "BEEPED" DOWN TO 100 PERCENT. FIVE MINUTES INTO THE FLIGHT THE RPM WAS NOTED TO BE WELL BELOW LOWER REDLINE APPROX 98 PERCENT. ATTEMPTED TO BEEP THE RPM UP BUT WAS UNSUCCESSSDR H5FA2012F00177Blade · bentTAIL ROTOR BLADE T/E SKIN DEFORMED AT CORDWISE BALANCE WEIGHT.SDR AC2A201210010001Combustion Case · crackedAFTER APPROACH TO INTRACOASTAL, WHILE IN A HOVER, BEGAN RIGHT PEDAL TURN TO TAXI TO THE PAD. LOOKED AT TORQUE GAUGE BEFORE BEGINNING RIGHT PEDAL TURN. TORQUE WAS 60 PERCENT-70 PERCENT. AS I BEGAN RIGHT PEDAL TURN, CROSS-CHECKED TORQUE GAUGE AND SAW A TORQUE SSDR EVCA201207300033Structure · delaminatedFOUND DELAMINATION ON FWD TUB DURING INSPECTION.SDR AC2A66K07172012B-Nut · looseNR 1 ENGINE FUEL PRESSURE WARNING LIGHT ILLUMINATED IN FLIGHT. FOLLOWED EMERGENCY PROCEDURES CHECKLIST AND RETURNED TO BASE. MX FOUND A LOOSE B-NUT ON PRESSURE SWITCH. B-NUT WAS TIGHTENED AND AIRCRAFT WAS GROUND RUN AND LEAK CHECKED.SDR EVCA201206270031Collector · crackedON ROUTINE INSPECTION FOUND CRACKS IN THE REPAIR WELDS ON THE ENGINE EXHAUST COLLECTOR ASSEMBLY.SDR ALGA2012060802Oil System · low pressureAFTER TAKEOFF, NR 2 ENGINE OIL PRESSURE LIGHT ILLUMINATED WITH CORRESPONDING LOW PRESSURE ON GAUGE. NR 2 CHIP LIGHT ILLUMINATED ON FINAL APPROACH BACK TO PATTERSON BASE. NR 2 ENGINE BECAME VERY ERRATIC, SURGING WITH TORQUE FLUCTUATIONS, AND T5 FLUCTUATIONS. SDR 2012F00097Blade · dentedDAILY AIRCRAFT CHECK NOTED DENTS ON TAIL ROTOR BLADES OUTER SURFACE. NON-SHARP DENTS ON OTBD FACE OF BOTH BLADES. NO INDICATION OF STRIKE TO BLADE L/E.
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