Allison 250-C20
Service difficulty reports · 945
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 = '250C20' 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 = '250C20' 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 BAQA085970Indicator · precessesUNIT PRECESSES BADLY AT TIMES. REPLACED WITH SERVICEABLE UNIT.SDR CA030421009Accumulator · leaking(CAN) DURING AIR LEAK CHECK & AFTER FUEL SYSTEM MAINTENANCE, A LEAK WAS DETECTED AT END OF ACCUMULATOR, WHERE MALL ADAPTER IS ATTACHED.SDR CA030407006Saddle · cracked(CAN) UPON PREFLIGHT INSPECTION, CRACK WAS DETECTED VISUALLY IN AFT OUTBOARD SADDLE OF LT SIDE TUBE. THE MANUFACTURER PUBLISHED SERVICE INSTRUCTION DRAWING NO.DSI 9150 DATED 99.04.01 TITLED (ADD 206 SADDLE SPACERS) TO PREVENT SADDLE CRACKING. THIS AIRCRAFT HASDR CA031124003Skid · broken(CAN) DURING FLIGHT OPERATION THE SKID GEAR (SUPPLEMENTAL TYPE CERTIFICATE HIGH SKID WITH FLIGHT STEP CONFIGURATION) WAS FOUND WITH 14 INCHES BROKEN.SDR CA030409013Structure · cracked(CAN) WHILE IN CRUISE FLIGHT THE PILOT NOTICED A YAW TO THE RIGHT. UPON LANDING HE NOTICED THAT THE TAIL FELT TWITCHY AND SHUTDOWN TO INVESTIGATE. WHEN HE GOT OUT HE NOTICED THE TOP HALF OF THE VERTICAL STABILIZER BENT OVER TO THE RIGHT HANGING ON BY THE RT SKSDR BAQA085088Governor · inoperativeGOVERNOR WILL NOT GOVERN, INOPERATIVE. REPLACED WITH SERVICEABLE UNIT.SDR CA030314004Bearing · failed(CAN) ON TEST FLIGHT FOLLOWING SCHEDULED MAINTENANCE INSPECTION, ENGINE CHIP LIGHT ILLUMINATED. AIRCRAFT LANDED AND ENGINE WAS SHUTDOWN, N2 DECAYED RAPIDLY AT SHUTDONW. TURBINE WAS FOUND TO HAVE ROTATIONAL BINDING, SUSPECT NR 8 BEARING FAILURE. METAL CONTAMINSDR EOO2003F00000Bracket · crackedFOUND GOVERNOR BELLCRANK BRACKET CRACKED. (SOR 300199 DATED 02/24/2003) A LEAK WAS SPOTTED COMING FROM UNDER THE GOV. BELCRANK BRACKET 369A7701. PART WAS REMOVED AND SUBSEQUENT INSPECTION REVEALED IT WAS CRACKED NEAR ONE OF THE BOLT HOLES. REPLACED UNIT.SDR BAQA084698Controller · brokenBACK OF CONNECTOR ON HSI IS BROKEN. BROKEN AT TIME OF RECEIVING.SDR 2003FA0001225Shaft · wornDURING ANNUAL INSPECTION, FOUND KNURLED NUT WORN BEYOND LIMIST. UPON REMOVAL OF THE KNURLED NUT AND TAIL ROTOR BALANCE WHEEL FOUND THREADS ON TAIL ROTOR GEARBOX OUTPUT SHAFT, UNDER BALANCE WHEEL, EXCESSIVELY WORN AND GALLED. CUSTOMERS PILOT REPORTED THAT THESDR Z9B2003F00001Transmission · making metalMETAL IN OIL RESULTING IN CHIP WARNING INDICATIONS. OIL FILTER CONTAINED BARASS AND IRON FINE FLAKES AND SLIVERS. SENT TO FACTORY REPAIR STATION FOR ANALYSIS AND REPAIR.SDR AC2A082143Governor · loosePOTTING COMPOUND IS BROKEN LOOSE AT SHAFT REPLACED WITH SERVICEABLE GOVERNOR.SDR Z9B2003F00002Brushes · wornSTARTER GEN, AT 100 HOUR INSPECTION FOUND COMMUTATOR WORN DOWN TO UNDERCUT, BRUSHES STILL SERVICEABLE. MAY NOT HAVE BEEN PROPERLY UNDERCUT AT LAST OVERHAUL.SDR HEEA082799Labyrinth Seal · contaminatedCARBON BUILD UP IN LABYRINTH SEALS CAUSING BINDING NG.SDR HEEA082800Metering Valve · leakingFUEL LEAKING FROM CASE DRAIN OF METERING VALVE.SDR HEEA082679Governor · failedNR 2 ENGINE DECELLED ON TAKEOFF. REPLACED NR 2 GOVERNOR.SDR Z9B2003F00000Clutch · failedRUBBING NOISE ON COAST DOWN AFTER SHUTDOWN. FOUND OVER-RUNNING CLUTCH ASSY HAD LOST ALL OIL. TOP BEARING CAP WAS BACKED .5000 OFF THREADS OF OUTER RACE SHAFT. CLUTCH STILL FUNCTIONED, BUT BEARINGS WERE BEGINING TO GRAB. TOP CAP LOCK WASHER STILL HAS PROPESDR AC2A082141Governor · loosePOTTING COMPOUND IS BROKEN LOOSE AT SHAFT REPLACED WITH SERVICEABLE GOVERNORSDR 2003FA0000072Grip · crackedCRACK LIKE INDICATION ON 9TH THREAD INBOARD WHICH EXCEEDS 15 PERCENT. IAW AD. PART REJECTED AND RED TAGGED BY REPAIR STATION. OPERATOR STATED PART WAS PURCHASED AS SPARE PRIOR TO AD. PART DESTROYED BY OPERATOR.SDR HEEA082664Filter · damagedPC FILTER HANG STARTS ON ENGINE RINSE CYCLE. SCRAPPED.SDR HEEA082665B-Nut · strippedPC TUBE FROM SCROLL TO PC FILTER B-NUT STRIPPED. SCRAPPED.SDR HEEA082666Elbow · strippedPC FILTER SIDE STRIPPED. SCRAPPED.SDR CA021231003Spacer · unapproved part(CAN) SPACERS ARE USED IN-BETWEEN THE MAST NUT AND THE MAIN ROTOR TRUNNION. THE QUESTION WAS RAISED IS THIS A BELL PART. IT WAS FOUND AFTER ASKING BELL HELICOPTERS TEXTRON PRODUCT SUPPORT THAT THIS SPACER WAS NOT A REPLACEMENT PART FOR THE DYNAMIC FLAP RESTRAISDR AC2A081579Fuel Control · leakingFUEL CONTROL LEAKING FUEL FROM WHERE THE MAX FLOW STOP SHAFT ENTERS THE FUEL CONTROL BODY. THIS WAS FOUND DURING GROUND RUN, PRIOR TO TAKE-OFF. REPLACED FUEL CONTROL.SDR ERAA082724Support · crackedPOWER TURBINE SUPPORT WAS OVERHAULED AND RETIRED WITH A CRACK ADJACENT TO A TACK WELD ON 25-28 SEAL.SDR VE32002F00006Pump · leakingTHE HYDRAULIC PUMP WAS LEAKING. IT WAS SENT TO A LOCAL VENDOR FOR REPAIR. THE VENDOR BORE PLUGGED FROM RESEVOIR PORT TO RELIEF BORE. THE CAUSE WAS EXCESSIVE CASTING IN THE HOLE AT MANUFACTURE.SDR ERAA082715Governor · malfunctionedCANNOT MAKE FINE ADJUSTMENTS TO ACHIEVE MAX BEEP. UNIT HAD DROOP. CHANGE BUSHING, D BEARING, L BEARINGS, W BEARINGS, TUBE DIAPHRAGM. REPAIRED AND FUNCTIONALLY TESTED.SDR ERAA082716Governor · malfunctionedUNABLE TO ADJUST FOR TORQUE SPLITS. PC, PY FITTINGS LOOSE. LEVER CAM WORN, O LEVER. REPLACED WORN PARTS FOUND DURING INSPECTIN IAW CMM 73-20-25. FUNCTIONALLY TESTED 10-29-02.SDR ALG2003F00037Fuel Cap · bentDURING PREFLIGHT, PILOT DISCOVERED WATER IN THE FUEL SAMPLE, THE MECHANIC DEFUELED THE AIRCRAFT AND REMOVED AND REPLACED THE AIRFRAME FUEL FILTER, FUEL NOZZLE, FUEL CAP, FUEL LINES WERE FLUSHED WITH FRESH FUEL, THE MECHANIC DETERMINED THE OLD FUEL CAP WAS SLIGSDR YT2R631367Switch · inoperativeFUEL BOOST SWITCH INOPERATIVE UPON INSTALLATION.SDR YT2R631369Switch · inoperativeFUEL BOOST SWITCH INOPERATIVE UPON INSTALLATION.SDR CA021129009Seal · warped(CAN) AME INSTALLED TURBINE ASSEMBLY FOLLOWING REPAIR. ON GROUND RUN, OIL LEAK WAS OBSERVED BETWEEN PT SUPPORT AND THE EXTERNAL OIL SUMP. SUMP WAS REMOVED AND SEALING FLANGE INSPECTED WITH A STRAIGHT EDGE. SEALING FLANGE WAS WARPED EXCESSIVELY (CRUSH SEAL FASDR LS1R088304Pump · inoperativeFUEL PUMP INOPERATIVE.SDR JJWA0049154Skid · corrodedHIGH SKID GEAR TUBE DISSIMILAR METAL CORROSION CRACK FOUND STARTING WITH SKID SHOE INSERT NUT UNDER AFT CROSSTUBE TITTING, ONLY 3 YEARS OLD, CRACK MAY HAVE BEEN MISSED FOR A WHILE ON INSPECTIONS.SDR JJWA0049155Skid · crackedSKID GEAR LANDING TUBE FOUND DISSIMILAR METAL CORROSION CRACK STARTING WITH SKID SHOE INSERT NUT AFT CROSSTUBE FITTING, NON-REPAIRABLE AREA. TUBE ONLY 3 YEARS OLD, CRACK MAY HAVE BEEN MISSED ON PAST INSPECTORS.SDR CA021007004Line · cracked(CAN) AIRCRAFT LANDED NORMAL SHUTDOWN. FUEL WAS NOTICED DRIPPING FROM ENGINE PAN DRAIN. BOOST PUMPS TURNED ON TO CHECK FOR STATIC LEAKS. FOUND SUBJECT LINE DRIPPING FUEL AROUND 'B' NUT. NUT WAS CHECKED AND WAS TIGHT. LINE WAS REMOVED AND INSPECTED ANDSDR LS1R088305Indicator · stickingINDICATOR STICKING. (N1 TACH)SDR KBMA115465O-Ring · failedENGINE HAS A REPORTED OIL LEAK. REPLACED O-RING AT REAR BEARING PRESSURE ELBOW.SDR B1HR631360Indicator · failedREPLACED GAUGE WITH RECONDITIONED UNIT, INDICATOR HAS FALSE EXCEEDANCES THAT CAN NOT BE CLEARED. WHEN LAPTOP IS CONNECTED GET AN ERROR SAYING THAT IP ADDRESS IS NOT CORRECT.SDR KBMA115451Indicator · malfunctionedGAS PRODUCER GAUGE BACKLIGHTING, INOPERATIVE. REMOVED AND REPLACED WITH SERVICEABLE UNIT.SDR KBMA115447Indicator · fluctuatesTACH NEEDLE FLUCTUATES BETWEEN 2 PERCENT TO 15 PERCENT WHILE AT GROUND IDLE. (DUAL TACH, NR 2 SIDE) REPLACED TACH WITH OVERHAULED UNIT. (INDICATOR)SDR B1HR631359Shaft · failedBEARING RACES ON SHAFT ARE BELOW MIN REQUIREMENT. BEARINGS WERE SPINNING ON SHAFT.SDR CA020819006Actuator · failed(CAN) THE PILOT WAS IN CRUISE FLIGHT WHEN THE ROTOR TACH NEEDLE MOVED TO 98 PERCENT. THE PILOT TRIED TO INCREASE ROTOR SPEED BY USING THE INCREASE BUTTON ON THE GOVERNOR BEEP RANGE SWITCH, BUT NO REACTION. THE PILOT BEGAN DESCENT INTO THE WELL SITE AND ON PULSDR CA020830001Governor · failed(CAN) PILOT NOTICED GOVERNOR OVERSPEEDING BEYOND SET LIMITS AND SHUT DOWN ENGINE.SDR 2002FA0001006Blade · delaminatedDURING HEAVY RAINFALL, AIRCRAFT EXPERIENCED VIBRATION ON MAIN ROTOR SYSTEM. PILOT PERFORMED A PRECAUTIONARY LANDING. MECHANIC INSPECTED THE MAIN ROTOR BLADES AFTER SHUT DOWN. MECHANIC FOUND BOTTOM SIDE OF ONE BLADE 2 INCHES AFT OF LEADING EDGE WITH METAL SKSDR R7MR35517Transmitter · inoperativeFUEL LEVEL TRANMITTER INOPERATIVE UPON INSTALL. PEGS HIGH AT ANY LEVEL ABOVE 5 PERCENT. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR JJW2002F00000Stiffener · crackedFOUND STIFFNER CRACKED DURING INSPECTION - CRACK ORIGINATED IN LOWEST HI-LOCK FASTENER POSITION 2.875 INCH BELOW TOP OF PART. ALSO SPLICED NEW WEB (PN 206031106349S) DUE TO CRACK IN WEB FROM SAME LOCATION. REPLACED STIFFNER. ALL WORK IAW SRM.SDR KBMA117648Support · wornTRANSMISSION MOUNT MAKES CLICKING SOUND. RIGHT SIDE, BEARING WAS WORN BEYOND LIMITS. REPLACED WITH NEW SUPPORT AND BEARING.SDR ERAA080337Fuel Control · out of adjustFCU OUT OF CALIBRATION. METERING VALVE FUEL FLOW SETTING FOUND LOWSDR R7MR35306Transmitter · leakingPRESSURE TRANSMITTER, LEAKING BEYOND SERVICEABLE LIMITS. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.
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