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.

SDR 2004FA0000062Mount · crackedCRACK-LIKE INDICATIONS DETECTED ON WELD EDGES-AREAS IDENTIFIED. FLUORESCENT AND MT INSPECTION USED.Dec 23, 2003 · N8548F · Bell 47G3B1 · Engine Mount SectionSDR 2004FA0000063Grip · crackedCRACK LIKE INDICATION DETECTED IN THREAD AREA WHICH EXCEEDS 10 PERCENT. EDDY CURRENT INSPECTION USED.Dec 23, 2003 · N8548F · Bell 47G3B1 · Fuselage Miscellaneous StructureSDR 2004FA0000067Housing · crackedCRACK-LIKE INDICATION DETECTED AT FLUID HOLE AREA. FP INSPECTION USED.Dec 23, 2003 · N8548F · Bell 47G3B1 · Main Rotor GearboxSDR BAQA091523Starter Gen · inoperativeSTARTER GEN HAS BRUSHES AND SPRING BROKEN. HARD CARD ENCLOSED. REPLACED WITH SERVICEABLE UNIT. 12/15/03Dec 13, 2003 · N911KY · Aerosp AS355* · Starter-GeneratorSDR 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. Dec 4, 2003 · N298EH · Bolkms BO105S · Main Rotor GearboxSDR ERAA093715Gear · making metalENGINE MAKING METAL. FOUND SPALLING ON PINION AND TORQUE METER GEAR. INSTALLED NEW PINION AND TORQUE METER GEAR.Nov 28, 2003 · N130EH · Bolkms BO105S · Engine (Turbine/Turboprop)SDR ERAA092661Engine · making metalENGINE MAKING METAL. FOUND GEARS IN GEARBOX BREAKING DOWN.Nov 26, 2003 · N152EH · Bolkms BO105S · Engine (Turbine/Turboprop)SDR KBM2003F00096Bearing · wornRT SIDE PYLON MOUNT FORWARD/AFT BEARING WORN. INSTALLED 2 NEW BEARINGS.Nov 19, 2003 · N73DP · Bell 206B · Nacelle/Pylon, Attach FittingsSDR KBM2003F00107Seat Belt · frayedPILOT OUTBOARD SEATBELT FRAYED. INSTALLED REPAIRED SEATBELT ASSY.Nov 19, 2003 · N73DP · Bell 206B · Emergency EquipmentSDR KBM2003F00108Compass · lowCOMPASS FLUID LEVEL LOW. INSTALLED OVERHAULED COMPASS.Nov 19, 2003 · N73DP · Bell 206B · Magnetic CompassSDR KBM2003F00106Relay · intermittentBATTERY RELAY OPERATES INTERMITTENTLY. REPLACED WITH SERVICEABLE.Nov 15, 2003 · N73DP · Bell 206B · Battery/Charger SystemSDR 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.Nov 14, 2003 · Bell 206B · Wheel/Ski/FloatSDR KBM2003F00081Drag Pin · looseDURING POST FLIGHT, FOUND MAIN GEARBOX DRAG PIN BEARING SHOOK LOOSE. REMOVED AND REPLACED.Nov 8, 2003 · N73DP · Bell 206B · Main Rotor GearboxSDR ERAA091802Bearing · failedMETAL ON BOTTOM PLUG. BROKEN NR 4 BEARING CAGE. INSTALLED SERVICEABLE GEARBOX. COMPLIED WITH E CHECKNov 1, 2003 · N135EH · Bolkms BO105A · Turbine SectionSDR KBM2004F00004Radio · inoperativeCONSTANT STATIC HEARD THRU PILOT HEADSET THRU VHF WITH ACCESSORIES ON. NO STATIC WITH ACCESSORIES OFF. REMOVED AND REPLACED WITH SERVICEABLE RADIO. (K)Oct 28, 2003 · N73DP · Bell 206B · VHF Communications SystemSDR AUS20031152Rotor · damaged(AUS) COMPRESSOR ROTOR ASSEMBLY DAMAGED BY FOD. AIRCRAFT HAD BEEN REASSEMBLED FOLLOWING PAINTING WHICH INCLUDED WORK IN THE COMPRESSOR PLENUM AREA.Oct 24, 2003 · Bell 206B · Turbine Engine Compressor SectionSDR KBM2003F00082Gyro · precessesDIRECTIONAL GYRO PRECESSES N 30 DEGREES WITHIN 10 SECONDS AFTER BEING SET ON PROPER HEADING. REPLACED WITH SERVICEABLE GYRO.Oct 23, 2003 · N667JM · Bell 206B · Directional Gyro and Indicating SystemSDR 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 WOct 23, 2003 · Bell 206B · Engine/Transmission CouplingSDR KBM2003F00069Circuit Breaker · malfunctionedFORWARD FUEL PUMP CIRCUIT BREAKER DOES NOT ILLUMINATE MASTER CAUTION LIGHT WHEN PULLED. REPLACED.(K)Oct 19, 2003 · N667JM · Bell 206B · Fuel System WiringSDR KBM2003F00070Indicator · inoperativeTOT GAUGE LIGHT INOPERATIVE. INSTALLED SERVIEABLE GAUGE.(K)Oct 19, 2003 · N667JM · Bell 206B · Engine EGT/TIT Indicating SystemSDR CA031021012Hanger Assy · cracked(CAN) DURING 1200 HR INSPECTION AFT OIL COOLER BEARING HANGER WAS FOUND TO BE CRACKED AT THE 1200 O'CLOCK POSITION.Oct 10, 2003 · Bell 206B · Tail Rotor Drive ShaftSDR EOO2003F00004Bearing · failed369A1306-3 BEARING FOUND WITH TEFLON LINER FAILED. MDNC SOR NR 300194 AND MAINTENANCE DISCREPANCY REPORT DATED 02 OCT 2003.Oct 2, 2003 · N5074R · Hughes 369D · Main Rotor HeadSDR AUS20030998Yoke · damaged(AUS) MAIN ROTOR BLADE GRIP BEARINGS CAUSED BRINELLING ON YOKE ARMS.Sep 17, 2003 · Bell 206B · Main Rotor HeadSDR 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.Sep 16, 2003 · N292EH · Bolkms BO105S · Emergency Flotation SectionSDR 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 RSep 10, 2003 · Bell 206B · Engine ControlsSDR CA030915001Cage · cracked(CAN) SPRAG CAGE CRACKED.Sep 8, 2003 · Bell 206B · Engine/Transmission CouplingSDR 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 Aug 27, 2003 · N6181K · Bell 206B · Main Rotor BrakeSDR 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.Aug 25, 2003 · Turbine Engine Compressor SectionSDR 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.Aug 15, 2003 · N149EH · Bolkms BO105S · Main Rotor GearboxSDR 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.Aug 11, 2003 · Bell 206B · Main Landing Gear Attach SectionSDR 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 Aug 1, 2003 · N911NW · Aerosp AS355F1 · Fire DetectionSDR 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 METAJul 29, 2003 · Bell 206B · Starter-GeneratorSDR 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 Jul 27, 2003 · N90065 · Bell 206B · Fuel Control/Turbine EnginesSDR 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 BLADJul 27, 2003 · Bell 206B · Turbine GovernorSDR 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 HJul 21, 2003 · Bell 206B · Agricultural Spray SystemSDR 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 TEAJul 4, 2003 · Bell 206B · Turbine SectionSDR HEEA087455Ignition Lead · intermittentINTERMITTENT STARTING PROBLEM. REPLACED IGNITER.Jun 12, 2003 · N457PH · Bell 407 · Ignition Harness (Distribution)SDR ERAA094065Fuel Control · overheatedFUEL CONTROL CLOSE TO EXPIRATION TIME. UNIT OVERHEATED. VERY DIRTY / CORRODED INTERNALLY. OVERHAULED IAW MFG OHM FORM 15-602E.Jun 12, 2003 · N152EH · Bolkms BO105S · Fuel Controlling SystemSDR HEEA087294Bearing · wornWORN DAMPER BEARING. REPAIRED.Jun 11, 2003 · N457PH · Bell 407 · Main Rotor HeadSDR 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 COMJun 11, 2003 · Bell 206B · Compressor Bleed ControlSDR 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. IJun 4, 2003 · Bolkms BO105S · Power LeverSDR HEEA086931Trunnion · wornTAIL ROTOR TRUNNION SPINDLES ARE WORN. TO BE SENT TO MFG.Jun 3, 2003 · N457PH · Bell 407 · Tail Rotor HeadSDR HEEA086988Bleed Valve · inoperativeBLEED VALVE PRODUCING HIGH TOT. REPLACED.Jun 3, 2003 · N467PH · Bell 407 · Compressor Bleed ValveSDR CA030605010Pin · broken(CAN) UPON POST FLIGHT INSPECTION BLADE PIN FOUND TO BE BROKEN WHERE THREAD MEETS THE PIN.May 29, 2003 · Hughes 369D · Main Rotor BladesSDR ERAA087093Governor · stiffGOVERNOR HARD TO OPERATE. HAS DROOPING, STIFF THROTTLE. REPAIRED AND TESTED IAW MFG OHM FORM 15-1095A.May 19, 2003 · N292EH · Bolkms BO105S · Fuel Controlling SystemSDR ERAA087086Fuel Control · surgesENGINE SURGES AT HIGH POWER SETTINGS. REPAIRED AND TESTED IAW MFG OHM FORM 15-602E.May 16, 2003 · N292EH · Bolkms BO105S · Fuel Control/Turbine EnginesSDR CA030526011Spar · cracked(CAN) CRACK FOUND ON INBOARD PORTION OF SPAR RUNNING LONGITUDINALLY.May 5, 2003 · Bell 206B · Horizontal Stabilizer, Spar/RibSDR 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.May 3, 2003 · N167H · Bell 206B3 · Engine Collector/Tailpipe/NozzleSDR 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 GRIPMay 3, 2003 · N135EH · Bolkms BO105A · Tail Rotor HeadSDR 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 PERFORMay 1, 2003 · N5011F · Bell 206B · Rotorcraft Servo System
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