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 2004FA0000062Mount · crackedCRACK-LIKE INDICATIONS DETECTED ON WELD EDGES-AREAS IDENTIFIED. FLUORESCENT AND MT INSPECTION USED.SDR 2004FA0000063Grip · crackedCRACK LIKE INDICATION DETECTED IN THREAD AREA WHICH EXCEEDS 10 PERCENT. EDDY CURRENT INSPECTION USED.SDR 2004FA0000067Housing · crackedCRACK-LIKE INDICATION DETECTED AT FLUID HOLE AREA. FP INSPECTION USED.SDR BAQA091523Starter Gen · inoperativeSTARTER GEN HAS BRUSHES AND SPRING BROKEN. HARD CARD ENCLOSED. REPLACED WITH SERVICEABLE UNIT. 12/15/03SDR ERAA093692Bevel Gear · deterioratedTRANSMISSION MAKING METAL. LT INPUT PINION AND BEVEL GEAR BREAKING DOWN, LT INPUT SEAL LEAKING. REMOVED AND SCRAPPED LT PINION AND BEVEL GEAR. INSTALLED SERVICEABLE LT INPUT PINION AND BEVEL GEAR, CLEANED AND INSPECTED ALL CENTER CASE AND LOWER CASE PARTS. SDR ERAA093715Gear · making metalENGINE MAKING METAL. FOUND SPALLING ON PINION AND TORQUE METER GEAR. INSTALLED NEW PINION AND TORQUE METER GEAR.SDR ERAA092661Engine · making metalENGINE MAKING METAL. FOUND GEARS IN GEARBOX BREAKING DOWN.SDR KBM2003F00096Bearing · wornRT SIDE PYLON MOUNT FORWARD/AFT BEARING WORN. INSTALLED 2 NEW BEARINGS.SDR KBM2003F00107Seat Belt · frayedPILOT OUTBOARD SEATBELT FRAYED. INSTALLED REPAIRED SEATBELT ASSY.SDR KBM2003F00108Compass · lowCOMPASS FLUID LEVEL LOW. INSTALLED OVERHAULED COMPASS.SDR KBM2003F00106Relay · intermittentBATTERY RELAY OPERATES INTERMITTENTLY. REPLACED WITH SERVICEABLE.SDR CA040217007Skid · corroded(CAN) SKID TUBE PARTIALLY DISASSEMBLED TO INVESTIGATE ELONGATED HOLE. SIGNIFICANT CORROSION FOUND UNDER 206-050-132-1 DOUBLER. DAMAGE IN NO-REPAIR AREA. SKID TUBE REPLACED.SDR KBM2003F00081Drag Pin · looseDURING POST FLIGHT, FOUND MAIN GEARBOX DRAG PIN BEARING SHOOK LOOSE. REMOVED AND REPLACED.SDR ERAA091802Bearing · failedMETAL ON BOTTOM PLUG. BROKEN NR 4 BEARING CAGE. INSTALLED SERVICEABLE GEARBOX. COMPLIED WITH E CHECKSDR KBM2004F00004Radio · inoperativeCONSTANT STATIC HEARD THRU PILOT HEADSET THRU VHF WITH ACCESSORIES ON. NO STATIC WITH ACCESSORIES OFF. REMOVED AND REPLACED WITH SERVICEABLE RADIO. (K)SDR AUS20031152Rotor · damaged(AUS) COMPRESSOR ROTOR ASSEMBLY DAMAGED BY FOD. AIRCRAFT HAD BEEN REASSEMBLED FOLLOWING PAINTING WHICH INCLUDED WORK IN THE COMPRESSOR PLENUM AREA.SDR KBM2003F00082Gyro · precessesDIRECTIONAL GYRO PRECESSES N 30 DEGREES WITHIN 10 SECONDS AFTER BEING SET ON PROPER HEADING. REPLACED WITH SERVICEABLE GYRO.SDR CA031119005Shaft · damaged(CAN) FREEWHEEL SENT FOR OVERHAUL. NEW INNER SHAFT REQUIRED. INNER SHAFT PURCHASED NEW AND INSTALLED WITH NEW SEALS. FREEWHEEL INSTALLED ONTO AIRCRAFT FOR 24.3 HOURS THEN REMOVED FORWARD SEAL LEAKING. FREEWHEEL ASSEMBLY RETURNED TO OVERHAUL SHOP FOR SEAL WSDR KBM2003F00069Circuit Breaker · malfunctionedFORWARD FUEL PUMP CIRCUIT BREAKER DOES NOT ILLUMINATE MASTER CAUTION LIGHT WHEN PULLED. REPLACED.(K)SDR KBM2003F00070Indicator · inoperativeTOT GAUGE LIGHT INOPERATIVE. INSTALLED SERVIEABLE GAUGE.(K)SDR CA031021012Hanger Assy · cracked(CAN) DURING 1200 HR INSPECTION AFT OIL COOLER BEARING HANGER WAS FOUND TO BE CRACKED AT THE 1200 O'CLOCK POSITION.SDR EOO2003F00004Bearing · failed369A1306-3 BEARING FOUND WITH TEFLON LINER FAILED. MDNC SOR NR 300194 AND MAINTENANCE DISCREPANCY REPORT DATED 02 OCT 2003.SDR AUS20030998Yoke · damaged(AUS) MAIN ROTOR BLADE GRIP BEARINGS CAUSED BRINELLING ON YOKE ARMS.SDR ERAA091808Float · leakingFLOAT BAG LEAKING AT BULKHEAD NR 3. SENT TO OFFSHORE HELICOPTERS FOR REPAIR IAW OHSS 100-1 AND C/W INSPECTION IAW 25-60-95.SDR CA030915012Comparator · damaged(CAN) PILOT REPORTED DROOP IN RPM AT TAKEOFF. FLEW TO BASE WITH NO PROBLEM. CHANGED OUT GOVERNOR. COULD NOT RIG CONTROLS AS PER MAINTENANCE MANUAL. INVESTIGATION RESULTED IN FINDING INOPERATIVE DROOP COMPENSATOR DUE TO SHEARED RIVET. RIVET REPLACED, CONTROLS RSDR CA030915001Cage · cracked(CAN) SPRAG CAGE CRACKED.SDR 2003FA0001051Housing · wornDURING A 100 HOUR INSPECTION IT WAS FOUND THAT THE ROTOR BRAKE RETURN SPRING HAD WORN INTO THE HOUSING. THE SPRINGS ON ALL FOUR HOUSINGS WERE COCKED AT AN ANGLE FROM TRUE CENTER, ALLOWING THE SPRING TO WEAR A GROOVE INTO THE SIDE OF THE HOUSING. THIS GROOVE SDR TR1031Coupling · frettedCOMPRESSOR COUPLING ADAPTER (P/N 23039797AL S/N CI17-406) HAS SEVERE FRETTING ON OD OF ADAPTER. SEVERAL OEM ADAPTERS HAVE FAILED AT THIS FRETTING AREA.SDR ERAA094064Drive Shaft · damagedDRIVE SHAFT DAMAGED ; SLIPPAGE MARKS IAW MBB MM CHAPTER 11 SECTION 11-55 B DRIVESHAFT WAS INSPECTED, DISASSEMBLED, STRIPPED, REPAIRED AND RE MPI. RE COATED AND REBUILT USING NEW HARDWARE, BALANCED, INSPECTED.SDR CA030812002Support · cracked(CAN) DURING SERVICABILITY CHECK CRACKS WERE FOUND ON THE LT AFT CROSS TUBE SUPPORT P/N 206031301123 , THE RT AFT CROSS TUBE SUPPORT PN 206031301124 AND ON BULKHEAD PN 206031302193. ALL PARTS WILL BE CHANGED OUT.SDR EJYA566DFire Detector · dirtyENG FIRE WARNING LIGHT ILLUMINATED IN FLT. PILOT PERFORMED REQUIRED EMER PROCEDURES AND PERFORMED EMER LANDING. WHEN MAINT ARRIVED, FIRE WARNING LIGHT HAD EXTINGUISHED. FIRE WARNING SYSTEM WAS INSPECTED AND NO DEFECTS FOUND. MECH CLEANED ALL FIRE DETECTORS SDR CA030806005Starter Gen · worn(CAN) STARTER GEN FAILED IN FLT. PILOT OBSERVED A GENERATOR FAIL LIGHT ON, & LANDED SAFELY. UNIT REMOVED & SENT TO AMO FOR INSPECTION. FOUND THE DRIVE END BEARING LINER LOOSE IN ITS CAST ENDBELL. LOOSENESS PERMITTED ARMATURE TO CONTACT STATOR, CAUSING METASDR PG92003F00000Fuel Control · fluctuatesDURING PART 135 OPS, AIRCRAFT HAD FLUCTUATING N1 IDLE, MAINTENANCE WAS NOTIFIED AND ADJUSTED IDLE. AIRCRAFT WAS THEN SHUT DOWN AND RESTARTED WITH NI IDLE FLUCTUATIONS ACCURING FOR A SECOND TIME. FUEL CONTROL WAS THEN REPLACED AND AIRCRAFT WAS GROUND RAN AND SDR CA030731012Tube · broken(CAN) A/C WAS ON APROCH 1000 FT ABOVE GROUND ON A RECONNAISSANCE FLIGHT OVER A FOREST FIRE WHEN THE PILOT AND PASSENGER BOTH HEARD A 'POP'. THE ENGINE DECELERATED TO IDLE. AN AUTOROTATION WAS CARRIED OUT TO A MUSKEG AREA WHERE ON TOUCHDOWN THE MAIN ROTOR BLADSDR CA030825006Spray Boom · failed(CAN) THE RT SPRAY BOOM FAILED AND FLEW UP INTO THE MAIN ROTOR BLADES. THE PILOT KEPT CONTROL OF THE AIRCRAFT AND LANDED SAFELY AT THE AIRPORT. UPON INVESTIGATION WE DETERMINED THAT THE TWO MAJOR FACTORS CAUSING THE INCIDENT WERE: THE BOOM HAD A WELDED JOINT HSDR CA030731003Blade · broken(CAN) IN-FLIGHT CRUISE CONFIGURATION, HIGH PITCH WHINE STARTED, TOT INCREASED FROM APPROXIMATELY 700 DEGREES C TO 760 DEGREES C. EMERGENCY DESCENT - RUN ON LANDING AT LOCAL AIRPORT. TEARDOWN INSPECTION TO FOLLOW (SUMMARY OF FINDINGS). INITIAL VISUAL (PRE TEASDR HEEA087455Ignition Lead · intermittentINTERMITTENT STARTING PROBLEM. REPLACED IGNITER.SDR ERAA094065Fuel Control · overheatedFUEL CONTROL CLOSE TO EXPIRATION TIME. UNIT OVERHEATED. VERY DIRTY / CORRODED INTERNALLY. OVERHAULED IAW MFG OHM FORM 15-602E.SDR HEEA087294Bearing · wornWORN DAMPER BEARING. REPAIRED.SDR CA030612007Case · broken(CAN) COMPRESSOR STALL ON START UP. PLASTIC WAS FOUND PROTRUDING FROM START BLEED VALVE. AFTER REMOVING BLEED VALVE, A 1.25 X 2 X .056 INCH PIECE OF PLASTIC WAS REMOVED, WHICH WHICH APPARENTLY HAD BROKEN FREE FROM THE BLEED AIR CHAMBER THAT SURROUNDS THE COMSDR CA030605012Bolt · oversized(CAN) DURING INSPECTION TO COMPLY WITH AIRCRAFT SERVICES CAMPAIGN NOTICE THE BOLT CONNECTING THE N2 CONTROL CABLES TO THE N2 LEVER ASSEMBLY WAS FOUND TO BE TOO LONG. THE EXTRA LENGTH HAD BEEN COMPENSATED FOR WITH THE USE OF EXTRA WASHERS UNDER THE BOLT HEAD. ISDR HEEA086931Trunnion · wornTAIL ROTOR TRUNNION SPINDLES ARE WORN. TO BE SENT TO MFG.SDR HEEA086988Bleed Valve · inoperativeBLEED VALVE PRODUCING HIGH TOT. REPLACED.SDR CA030605010Pin · broken(CAN) UPON POST FLIGHT INSPECTION BLADE PIN FOUND TO BE BROKEN WHERE THREAD MEETS THE PIN.SDR ERAA087093Governor · stiffGOVERNOR HARD TO OPERATE. HAS DROOPING, STIFF THROTTLE. REPAIRED AND TESTED IAW MFG OHM FORM 15-1095A.SDR ERAA087086Fuel Control · surgesENGINE SURGES AT HIGH POWER SETTINGS. REPAIRED AND TESTED IAW MFG OHM FORM 15-602E.SDR CA030526011Spar · cracked(CAN) CRACK FOUND ON INBOARD PORTION OF SPAR RUNNING LONGITUDINALLY.SDR ALG2003F00063Clamp · brokenDURING LANDING THE PILOT SMELLED A DISTINCT ODOR, UPON LANDING FOUND ONE OF THE EXHAUST STACKS ON THE SIDE OF THE ENGINE COWLING. THE MECHANIC REMOVED AND REPLACED THE BROKEN CLAMP AND THE AIRCRAFT WAS RETURNED TO SERVICE.SDR ERAA093691Rotor Head · damagedINNER SLEEVE BUSHINGS DEBONDED. OB BUSHINGS 2 EA ON INNER SLEEVE CRACKED. BOTH RINGS IN BOTTOM OF GRIPS MECHANICALLY DAMAGED. IB INNER SLEEVE BUSHINGS WORN. TEETER BUILT BUSHINGS WORN AND MECHANICALLY DAMAGED . ALL FOUR TEFLON GRIP BUSHINGS WORN. ONE GRIPSDR ALG2003F00060Servo · inoperativeDURING LANDING THE PILOT FELT THE BINDING FORCE FROM THE CYCLIC, UPON LANDING THE PILOT FOUND THE TOP CASTLE NUT OF THE LEFT SERVO FROZEN WHICH PRODUCED BINDING, THE MECHANIC REMOVED THE SERVO BOLT AND NUT, CLEANED AND REINSTALLED. OPS FLIGHT CHECK WAS PERFOR
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