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 CA041110003Blade · cracked(CAN) DURING DI, THE TIP BLOCK WAS FOUND CRACKED ADJACENT TO IMPACT MARK.Jul 29, 2004 · Bell 206B · Main Rotor BladesSDR CA040811009Clamp · missing(CAN) ON DECENT PILOT FELT A TAP ON THE TAIL ROTOR PEDALS, AND LOOKED INTO HIS SLINGING MIRROR AND DETERMINED THAT THE LT BEAR PAW WAS MISSING. AFTER LANDING HE NOTICED DAMAGE TO TAIL ROTOR BLADES, AND VERTICLE FIN. ON INSPECTION, IT WAS FOUND THAT A CLAMP TJul 26, 2004 · Bell 206B · Tail Rotor Control SystemSDR CA040812005Strap · cracked(CAN) FOUND STRAP CRACKED AT 100 HOUR INSPECTION. PART REPLACED.Jul 23, 2004 · Bell 206B · Fuselage Miscellaneous StructureSDR EAHR200400002Tube · brokenPYLON TUBE, P/N 4110040-30, BROKEN AT UPPER CLUSTER.Jul 21, 2004 · N480EH · Enstrm ENSTROM480 · Nacelle/Pylon StructureSDR ALGA096403Blade · separatedFOUND CORROSION AND SEPARATION AT SKIN/SPAR INTERFACE NEAR LOWER OB GRIP FINGER DOUBLER. REMOVED AND REPLACED DEFECTIVE BLADE WITH NEW BLADE. SCRAPPED DEFECTIVE BLADE.Jul 20, 2004 · N206DB · Bell 206L4 · Main Rotor BladesSDR CA040812007Skin · cracked(CAN) DURING 100 HOUR INSPECTION, CRACK IN PAINT FORWARD OF NR3 HANGAR SUPPORT BRACKET. BRACKET REMOVED, PAINT REMOVED AND AREA FLUORESCENT PENETRANT INSPECTED. CRACK APPROXIMATELY 1.5 INCH.Jul 20, 2004 · Bell 206B · Rotorcraft Tail BoomSDR 2004FA0000721Mount · out of positionAIRCRAFT FOUND TO HAVE CONTACT WITH FAN CONTROL ROD AND FAN DRIVESHAFT, WHICH MAY HAVE BEEN THE CAUSE OF HIGH VIBRATION IN AIRFRAME. MFG CALLED TO CHECK THE ALIGNMENT OF THE FAN MOUNT. SECOND TIME, HAD RUB WITH DRIVESHAFT SINCE AIRCRAFT WAS NEW.Jul 15, 2004 · N529FB · Hughes 500N · Rotorcraft Flight ControlSDR 2004FA0000722Mount · out of adjustAIRCRAFT OVERCOME WITH SEVERE VIBRATION ON THROTTLE ROLL UP FROM GROUND IDLE TO FLIGHT IDLE. FOUND FAN CONTROL ROD MADE CONTACT INSIDE FAN DRIVESHAFT. UPON FURTHER INSPECTION FOUND FAN TRANSMISSION MOUNT AT STATION 150 OUT OF ALIGNMENT. SENDING AIRCRAFT BACJul 15, 2004 · N528FB · Hughes 500N · Rotorcraft Tail BoomSDR CA040719001Battery · overheatedTHE 'BATTERY TEMP' WARNING LIGHT ILLUMINATED ON ROUTE. THE BATTERY WAS TURNED OFF FOR THE REMAINDER OF THE FLIGHT. UPON LANDING AND SHUTTING DOWN , THE PILOT NOTICED THAT THE BATTERY FELT VERY HOT TO THE TOUCH. WHILE TALKING TO THE MAINTENANCE DEPT ON THE PJul 15, 2004 · Bell 206B · Battery/Charger SystemSDR CA040708012Drain Valve · leaking(CAN) DURING MAINTENANCE GROUND RUN IAW MM-1-5/27, THE ENGINE FLAMED OUT WHEN THE BOOST PUMPS WERE SHUT OFF. THIS FAILURE WAS REPEATABLE. TROUBLE SHOOTING REVEALED AIR ENTERING THE FUEL SYSTEM THROUGH THE AIRFRAME FUEL FILTER ASSEMBLY DRAIN VALVE. THE AIRFRAMEJul 5, 2004 · Bell 206B · Aircraft Fuel Filter/StrainerSDR CA040621008Powerpack · failedIT APPEARS THAT THE HYDROPACK HAD AN INTERNAL GEAR FAILURE. THE AIRCRAFT HAD NR INDICATIONS BUT NO HYDRAULIC PRESSURE. HYDROPACK WAS CHANGED AND AIRCRAFT RETURNED TO SERVICE.Jun 18, 2004 · Bell 206B · Hydraulic System, MainSDR ALGA095348Blade · flakingFOUND TRAILING EDGE EXTRUSION EXFOLIATED AT STA. 178.00. REMOVED BLADE FROM SERVICE.Jun 16, 2004 · N2155Z · Bell 206B3 · Main Rotor BladesSDR CA040616002Turbine Wheel · burned(CAN) MAIN ROTOR WAS HARD TO TURN BACKWARDS INDICATING CARBON PROBLEMS. AIRCRAFT WAS GROUND RUN AS PER MANUFACTURES RECOMENDATIONS AND RELEASED FOR SERVICE AS TURBINE HAD FREED UP. COMPANY HAD REMOVED AIRCRAFT FROM SERVICE AND RETURNED IT TO BASE. ON REMOVAJun 15, 2004 · Bell 206B · Engine (Turbine/Turboprop)SDR YTRR096995Governor · failedTHE GOVERNOR WAS INSTALLED AND AFTER 126.2 HRS N2 COULD NOT BE ADJUSTED ABOVE 97 PERCENT.Jun 11, 2004 · N239RA · Bell 206B3 · Turbine GovernorSDR CA050616006Transmitter · unserviceable(CAN) FUEL QUANTITY INDICATION FLUCTUATES AT NEAR FULL FUEL LEVELS. UPPER SENDING UNIT REPLACED. THIS INSTALLATION WAS 249.9 HOURS.Jun 11, 2004 · Bell 206B · Fuel Quantity SensorSDR YTRR095302Governor · malfunctionedGOVERNOR CANNOT BE ADJUSTED ABOVE 97 PERCENT N2.Jun 10, 2004 · N239RA · Bell 206B3 · Fuel Controlling SystemSDR CA040727006Indicator · inoperative(CAN) FOUND ON TROUBLESHOOTING THAT NORMAL INDICATION EXISTED WITH GENERATOR OFF. ONCE GENERATOR WAS SWITCHED ON, THE OIL TEMPERATURE INCREASED CONTINUOUSLY UNTIL OVER THE RED LINE. INDICATOR HAD RECENTLY BEEN REPLACED FOR A PRESSURE INDICATION PROBLEM. INDICAJun 3, 2004 · Bell 206B · Engine Oil TemperatureSDR CA040601013Battery · leakingDURING ANNUAL PERFORMANCE TEST, IT WAS NOTICED THAT DURACELL MN1300 BATTERIES DATED MAR 2010 WERE LEAKING WHAT APPEARED TO BE BATTERY ACID. BATTERY VOLTAGE WAS LOW. ELT BATTERY CASE WAS CLEANED AND A FULL SET OF NEW BATTERIES WERE INSTALLED. ELT WAS PERFORMAJun 1, 2004 · Bell 206B · Emergency Locator BeaconSDR CA040610004Clutch · cracked(CAN) ON START-UP THE PILOT HAD A CHIP LIGHT INDICATION, IMMEDIATELY SHUTDOWN AND INSPECTED THE FREEWHEEL CHIP DETECTOR. METAL CHIPS WERE FOUND.May 31, 2004 · Bell 206B · Engine/Transmission CouplingSDR AC2A095338Tube · corrodedPART IS CORRODED. FOUND MANY CORROSION SPOTS ON TUBE WHEN REMOVED FROM PACKAGE FOR INSTALLATION. NEW PART. RETURNING TO MFG FOR CREDIT.May 28, 2004 · N21460 · Bell 206B3 · Engine Oil Distribution (Airframe Furnished)SDR AC2A095339Tube · corrodedPART IS CORRODED. FOUND CORROSION ON LINE DURING PRE-ASSEMBLE INSPECTION FROM STOCK ROOM. NEW PART. RETURNING TO MFG FOR CREDIT.May 28, 2004 · N21460 · Bell 206B3 · Instrument PanelSDR CA040729003Stator · failedAIRCRAFT HAD ENGINE DECEL IN FLIGHT AND AUTOROTATION. INITIAL FIELD INSPECTION FOUND DAMAGE AS FOLLOWS: - ENGINE COMPRESSOR FOD FOUND COULD BE SEEN ON 2ND, 3RD AND 4TH STAGES- KAFLEX DRIVE SHAFT CONTACTED ISOLATION MOUNT-TXMN DRAG PIN CONTACTED STRIKER PLATE,May 28, 2004 · Bell 206B · Turbine Engine Compressor SectionSDR UAB2004F00000Flex Pack · failedDURING INSPECTION AFTER ENGINE OIL COOLER DRIVE SHAFT FLEX PACK FAILURE. THE AIRFRAME WAS FOUND TO BE CRACKED APPROXIMATELY 90 PERCENT AROUND THE CIRCUMFERENCE OF THE TUBE. THIS WAS BELOW THE WELD, RT SIDE, AFT OF RT AFT TRANSMISSION MOUNT AREA. RECOMMEND AMay 27, 2004 · N480EH · Enstrm ENSTROM480 · Engine Oil CoolerSDR CA040804005Check Valve · out of rig(CAN) WHILE DOING 100 HOUR INSPECTION ITEMS DUE TO ENGINE SWAP TO ALTERNATE A/C, FOUND THAT THE TURBINE CHECK VALVE 23074872 WAS SEIZED WHEN THE CLAMP MS 122911 WAS TIGHTENED. VALVE/CLAMP CONFIGUATION IS CORRECT IAW IPC/CEB1349. CHECK VALVE WOULD FUNCTION WIMay 14, 2004 · Bell 206B · Turbine SectionSDR CA040512004Cyclic Stick · cracked(CAN) DURING ROUTINE INSPECTION CYCLIC TUBE P/N 206-001-342-001 WAS FOUND CRACKED AT THE UPPER BOLT HOLE ON THE PILOTS SIDE SLOT ATTACHMENT. THIS TUBE HAD ACCUMULATED408.7 HOURS SINCE ITS LAST INSPECTION MAY 20, 2003. THIS INSPECTION IS A 1200 HOUR REQUIREMENTMay 12, 2004 · Bell 206B · Main Rotor ControlSDR BAQA094193Pump · failedPUMP FAILS TO PROVIDE SUFFICIANT PRESSURE. REPLACED WITH SERVICABLE UNIT. 04/26/2004Apr 22, 2004 · N942MS · Aerosp AS355F2 · Fuel Boost PumpSDR ALGA094218Universal · ratchetingFOUND EXCESS AXIAL PLAY AND RATCHETY. UNIT REPLACED WITH NEW BY FIELD MAINT.Apr 21, 2004 · N457AL · Bell 407 · Main Rotor HeadSDR EOPR094205Starter Gen · failedGENERATOR FAILED IN FLIGHT. LANDED AT NEXT OPPORTUNITY TO FIND GENERATOR BITS AND PIECES ON ENGINE DECK AND EVIDENCE OF OVERHEATING/MELTED METAL. REMOVED AND REPLACED STARTER WITH SERVICEABLE UNIT. CHECKED ENGINE CHIP DETECTORS FOR CONTAMINATION AND RAN ENGIApr 15, 2004 · N847AL · Bell 407 · Starter-GeneratorSDR JJWA0055791Combust Chamber · crackedNOTICE HIT TOT ON A NORMALLY COOL RUNNING TURBINE, OVER A PERIOD OF A FEW FLIGHTS TOT CLIMBED MORE. PERFORMED NORMAL BARFIELD TOT TESTING AND BLEED VALVE CLOSURE TESTS, THEN DID THE HAND FEEL TEST DURING START AND IDLE AND FOUND AIR LEAKAGE AT LEFT AFT AIR TUApr 12, 2004 · N5005N · Bell 206B · Turbine Engine Combustion SectionSDR GO42004F00000Control Cable · brokenDURING DAILY INSP, THE THRUSTER ASSY SYSTEM WAS OPERATED TO CHECK THE OPERATION AND SMOOTHNESS OF THIS SYSTEM. A LOUD NOISE WAS HEARD AND THE THRUSTER CONE WAS DISCONNECTED FROM THE CONTROL SYSTEM. UPON REMOVING THE TAILBOOM FAIRING TO GET ACCESS TO THE INTEApr 12, 2004 · N501HP · Hughes 500N · Fuel Controlling SystemSDR AUS20040362Gear · worn(AUS) MAIN TRANSMISSION SUN GEAR PN 206-040-662-101 AND SUN GEAR SHAFT PN 206-040-040-005 WORN BEYOND LIMITS IN SPLINED AREAS. INVESTIGATION FOUND THE SUN GEAR UPPER O RING PN M83248/1-228 WAS TORN AND SLICED IN SEVERAL AREAS AND THE SUN GEAR LOWER O-RING PN Apr 6, 2004 · Bell 206B · Main Rotor GearboxSDR BAQA094005Fuel Control · failedWARRANTY / EXCHANGE - CORE RETURN FOR WARRANTY/EXCHANGE PO 202317205. CORE S/N 333014 WAS RECEIVED UNDER EXCHANGE PO 202267101 AND INSTALLED ON ENGINE S/N 841012 ON 02/26/2004 AND FAILED 04/02/2004 FOR A TOTAL TSO OF 9.4 HOURS. PLEASE ADVISE WARRANTY MANAGER OApr 2, 2004 · N911KY · Aerosp AS355F1 · Fuel Controlling SystemSDR BAQA094236Fuel Nozzle · dirtyREQUIRES CLEANING AND FLOW CHECK. FUEL NOZZLE IS ORIGINAL EQUIPMENT OFF OF ENG. REPLACED WITH SERVICABLE UNIT. 04/22/2004Mar 31, 2004 · N941MS · Aerosp AS355F2 · Fuel Injector NozzleSDR CA040318004Grease Fitting · clogged(CAN) DURING 50 HOUR LUBRICATION INTERVAL. FITTINGS WOULD NOT PASS GREASE. FITTING REPLACED.Mar 11, 2004 · Bell 206B · Tail Rotor HeadSDR BAQA093729Filter · failedUNIT FAILED FILTER BY-PASS CHECK. THIS UNIT WAS ORIGINALLY ON THE ENGINE WHEN INSTALLED ON A/C S/N 5498. REPLACED WITH SERVICABLE UNIT. 03/11/2004Mar 10, 2004 · N942MS · Aerosp AS355F2 · Engine Fuel PumpSDR ULX2004F00007Housing · crackedCRACKED AT DRIVE FLANGE WELD. POSSIBLE CAUSE- AERODYNAMIC AND MECHANICAL FORCES AT DRIVE FLANGE. RECOMMENDATION- USE OF STRONGER BASE MATERIAL AND STRICTER CONTROL OF WELDING PROCESS.Mar 10, 2004 · N212LA · Bell 206B · Exterior LightingSDR ERAA094062Impeller · mismanufacturedIMPELLAR HAS THIN AIRFOIL. THIS IS NEW PART THAT WAS ISSUED TO AIRCRAFT BUT COULD NOT BE INSTALLED DUE TO THIN AIRFOIL.Mar 5, 2004 · N153EH · Bolkms BO105S · Fuel ServicingSDR CA040302006Pump · destroyed(CAN) DURING GROUND RUN FOR MAINTENANCE ACTIVITY STROBING OF TAIL ROTOR ASSEMBLY AN EXPLOSING AND SUBSEQUENT FIRE OCCURRED IN THE FUEL CELL ASSEMBLY AND AFT PASSENGER COMPARTMEN. AIRCRAFT WAS ON ITS FOURTH START OF THE DAY FOR TAIL ROTOR BALANCING CHECK, FIREFeb 24, 2004 · Bell 206B · Fuel Boost PumpSDR BAQA092464Shaft · wornBLEED VALVE SHAFT WORN. BLEED VAVLE IS ORIGINAL EQUIPMENT OFF OF ENGINE. REPLACED WITH SERVICABLE UNIT. 02/25/2004Feb 23, 2004 · N912KY · Aerosp AS355F2 · Compressor Bleed ValveSDR BAQA093002Encoder · out of toleranceENCODER UNIT IS OUT OF TOLERANCE. REPLACED WITH SERVICABLE UNIT (S/N 33768) 03/02/2004Feb 20, 2004 · N912KY · Aerosp AS355F · Altimeter, Barometric/EncoderSDR CA040226002Blade · peeling(CAN) TAIL ROTOR BLADES RECEIVED FROM MFG WITH THE PAINT REFINISHED AFTER REPAIR OR INSPECTION ARE PEELING OR SHREDDING TO THE BLADE BODY SURFACE BELOW. THIS IS OCCURRING USUALLY WITHIN THE FIRST 100 HOURS OF OPERATION. THE NEW REFINISHED PAINT SURFACE IS THFeb 17, 2004 · Bolkms BO105S · Tail Rotor BladesSDR BAQA092608Case Half · crackedPLASTIC MISSING/CRACKED BEYOND LIMITS. UNIT ORIGINAL EQUIPMENT OFF OF ENG.. REPLACED WITH SERVICABLE UNIT. 02/26/2004Feb 9, 2004 · N912KY · Aerosp AS355F2 · Engine (Turbine/Turboprop)SDR BAQA092580Pressure Switch · failedPRESSURE SWITCH ONLY LASTED 1.5 HOURS REPLACED WITH SERVICABLE UNIT. 02/10/2004Feb 4, 2004 · N652PM · Aerosp AS355F1 · Fuel Pressure IndicatingSDR BAQA092581Valve · inoperativeVALVE ONLY LASTED 1.5 HOURS. SCRAPED ON SITE REPLACED WITH SERVICABLE UNIT. 02/10/2004Feb 4, 2004 · N652PM · Aerosp AS355F1 · Fuel Controlling SystemSDR ERAA094437Governor · failedGOVERNOR NOT HOLDING SINGLE ENGINE MAXIMUM BEEP RANGE. SENT FOR REPAIR. REPAIRED AND TESTED IAW MFG OHM FORM 15-1095AJan 23, 2004 · N153EH · Bolkms BO105S · Fuel Controlling SystemSDR BAQA092100Altimeter · stickingRADAR ALTIMETER UNIT INOPERATIVE, STICKING. FAILED OUT OF BOX. REPLACED WITH SERVICABLE UNIT. 01/20/2004Jan 16, 2004 · N652PM · Aerosp AS355F1 · Altimeter, Barometric/EncoderSDR 2004FA0000097Selector Valve · wornLANDING GEAR WOULD NOT EXTEND. FINALLY FORCE LANDING GEAR HANDLE DOWN GEAR EXTENDED AND LOCKED BUT STILL HAD TRANSITION LIGHT. PART FAILED PRIMARILY DUE TO AGE AND USE (WEAR).Jan 9, 2004 · N1PJ · Agusta A109A2 · Landing Gear Retraction/Extension SystemSDR ERAA092653Bushing · misinstalledUNABLE TO ADJUST FOR PEDAL FORCE. TEFLON ON GRIP BUSHINGS FLAKING. COMPLY PREINSPECTION AND NOTED NO DEFECTS. DISASSEMBLED AS FAR AS NECESSARY FOR REPAIR. VISUALLY NOTED TEFLON FLAKING ON GRIP BUSHING. POSSIBLE CAUSE OF ABOVE DISCREPANCY. NO OTHER DISCREDec 29, 2003 · N152EH · Bolkms BO105S · Tail Rotor HeadSDR BAQA091613Case · damagedCASE HALVES OF COMPRESSOR, COATING LIFTING. PART REPLACED WITH SERVICABLE UNIT.Dec 23, 2003 · N941MS · Aerosp AS355F2 · Turbine Engine Compressor SectionSDR 2004FA0000061Master Rod · crackedCRACK-LIKE INDICATION DETECTED BETWEEN WELD AND HOLE 2 AND END OF ROD. FLUORESCENT PENETRANT INSPECTION AND MT INSPECTION USED.Dec 23, 2003 · N8548F · Bell 47G3B1 · Reciprocating Engine Power Section
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