Allison 250-C47B

Service difficulty reports · 1,403

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 = '250C47B'
  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 EVCA202304240001Unknown · unknownFUEL ODOR NOTED IN THE CREW CABIN IN FLIGHT. ODOR DID NOT DIMINISH FOR THE DURATION OF THE FLIGHT. REMOVE THE FUEL CELL INTERCONNECT COVER AND REINSTALLED THE FUEL CELL INTERCONNECT COVER IN REFERENCE TO THE BHT-MM-407 CH 28. PERFORMED A FUEL PRESSURE LEAK CHEApr 19, 2023 · N911AE · Bell 407 · Aircraft Fuel SystemSDR EVCA03312023Packing · unknownFUEL SMELL IN AIRCRAFT CABIN. IDENTIFIED PREFORMED PACKING TORN AT FORWARD TO AFT FUEL CELL INTERCONNECT FITTING P/N 407-062-017-101. REPLACED PREFORMED PACKING P/N MS29513-222. LEAK CHECK GOOD, NO DEFECTS NOTED.Mar 30, 2023 · N911AE · Bell 407 · Aircraft Fuel SystemSDR 2VKA202303290001Adapter · dirtySHORTLY AFTER TAKEOFF THE AIRCRAFT MOMENTARY LOST POWER, THE LOW ROTOR LIGHT AND CAUTION HORN SOUND FOR LESS THAN 2 SECONDS, THE POWER RETURNED TO THE AIRCRAFT AND THE FADEC DEGRADE CAUTION LIGHT ILLUMINATED. THE PILOT CONTINUED TO MAKE THE PRECAUTIONARY LANDMar 21, 2023 · N932SF · Bell 407 · Engine Fuel and ControlSDR QMLA2023022120008None · usedDURING PATIENT FLIGHT RESTART FAULT AND FADEC DEGRADE LIGHTS ILLUMINATED. RETURNED TO BASE WITH PATIENT. CREW AND PATIENT TRANSPORTED BY AMBULANCE TO ANOTHER AIRCRAFT. REPLACING THE CIT SENSOR INITIALLY FIXED THE PROBLEM BEFORE THE FAILURE IN FLIGHT LATER THAFeb 17, 2023 · N911AL · Bell 407 · Standard Practices/StructuresSDR QMLA2023022120009Hmu · unknownTHIS WAS THE THIRD TIME IN ONE-WEEK FADEC DEGRADE/RESTART FAULT WAS DISPLAYED ON THE CAUTION WARNING PANEL DURING RUN UP. AFTER CONNECTING TO THE ECU WITH A COMPUTER, FAULTS WFMVFLT AND WFMVRTFLT WERE FOUND, THESE SAME FAULTS WERE FOUND ON THE PREVIOUS INCIDENFeb 17, 2023 · N772AL · Bell 407 · Engine Fuel and ControlSDR HNAA2023010500020Unknown · smokeEXCESSIVE SMOKE NOTED FROM NR 1 ENGINE. INSPECTED NR 1 ENGINE IAW MM 05-50-00-200-808 AND N TO 120. NO OIL LEAKS NOTED RAN NR 1 ENGINE. NO SMOKE. OK FOR SERVICE.Jan 4, 2023 · N652AE · Bell 407 · Engine (Turbine/Turboprop)SDR QMLA2022112120077Engine · making metalENGINE CHIP LIGHT CAUTION ILLUMINATED DURING FLIGHT. PILOT MADE A PRECAUTIONARY LANDING ON THE SIDE OF INTERSTATE 15. MECHANIC INSPECTED THE ENGINE CHIP DETECTORS. ON THE FWD R/H CHIP DETECTOR, A VERY SMALL METALLIC SLIVER WAS FOUND. CLEANED CHIP DETECTORNov 18, 2022 · N223AM · Bell 407 · Engine (Turbine/Turboprop)SDR QMLA2022110920073Gearbox · making metalWHILE IN THE DECELERATION PHASE FOR LANDING, THE "XMSN CHIP" AND MASTER CAUTION LIGHTS ILLUMINATED. ALL OTHER INDICATIONS - TRANSMISSION PRESSURE, TEMP. WERE NORMAL. NO ABNORMAL NOISE OR VIBRATIONS NOTED. LANDING AND SHUTDOWN WERE NORMAL. INSPECTED CHIP DETENov 8, 2022 · N434AM · Bell 407 · Main Rotor GearboxSDR QMLA2022101320068Bleed Valve · faultedHIGH/ ERRATIC MGT AND TQ IN FLIGHT WHEN INITIATING A CLIMBOct 10, 2022 · N224AM · Bell 407 · Compressor Bleed ValveSDR 2022F00353None · nonePILOT REPORTED DURING HIS PRE-FLIGHT CHECK THAT THE ENGINE OIL DIFFERENTIAL BYPASS INDICATOR WAS EXTENDED ON THE COMBINED ENGINE FILTER ASSEMBLY (CEFA)Sep 7, 2022 · N412CF · Bell 407 · Engine (Turbine/Turboprop)SDR EVCA082322Unknown · odorPOSSIBLE ELECTRICAL BURN SMELL ON SHUTDOWN. COULD NOT DUPLICATE OR FIND AN ISSUE OR CAUSE.Aug 22, 2022 · N494AE · Bell 407 · Air Distribution SystemSDR QMLA2022080820050Ecu · faultedSTARTING NORMAL, PRE-TAKE OFF CHECKS COMPLETED, TAKING OFF FROM BASE FADEC DEGRADE AND RESTART FAULT LIGHTS ILLUMINATED WITH TONE, ABORTED FLIGHT RETURNED TO BASE. NORMAL 2 MIN COOLDOWN BEFORE INITIATING A SHUTDWN, AS THROTTLE TURNED TO OFF POSITION FADEC FAILAug 6, 2022 · N229AM · Bell 407 · Engine Fuel and ControlSDR QMLA2022080220048Hmu · faultedIN FLIGHT CAS SHOWED FADEC DEGRADE THEN A RESTART FAULT, HMU REPLACEMENT.Jul 31, 2022 · N135AM · Bell 407 · Engine Fuel and ControlSDR QMLA2022080120047Indicator · faultedDURING CRUISE FLIGHT PILOT NOTICED THAT THE ENGINE OIL PRESSURE INDICATION DROPPED TO ZERO. PILOT MADE AN UNSCHEDULED LANDING WITH A PATIENT ON BOARD.Jul 30, 2022 · N408LL · Bell 407 · Engine Indicating SystemSDR EVCA202207070002Blower Motor · overheatedELECTRICAL SMELL IN CABIN. AIR CONDITIONER AFT EVAPORATOR BLOWER MOTOR OVERHEATING.Jul 3, 2022 · N489AE · Bell 407 · Humidity Control SystemSDR QMLA2022061720034Motor · faultedPILOT RECEIVED A CALL FOR AN INTER HOSPITAL TRANSFER. APPROXIMATLY 6 MINUTES POST DEPARTURE FROM BASE THE FLIGHT CREW STARTED SMELLING SMOKE. A SHORT DISCUSSION TOOK PLACE BETWEEN THE CREW VERIFIYING ALL HAD SMELLED "SMOKE" AT WHICH TIME THE PILOT MADE THE DECJun 17, 2022 · N434AM · Bell 407 · Air Conditioning SystemSDR EVCA2022060800022Motor · odorBURNT SMELL IN CABIN WITH AIR CONDITIONING ON.Jun 7, 2022 · N193AE · Bell 407 · Air Distribution FanSDR QMLA2022052620029Motor · odorINTERMITTENT BURNING SMELL IN AIRCRAFT DURING RETURN FLIGHT TO BASE. DIVERTED TO KSOW TO HAVE MAINTENANCE INSPECT. FOUND AFT A/C BLOWER MOTOR FAILING & REPLACED IT.May 25, 2022 · N420GA · Bell 407 · Air Conditioning SystemSDR 8LFA20220322001None · noneSMOKE IN CABIN WHEN HEAT IS TURNED ON. FOUND ENGINE #1 BEARING CARBON SEAL LEAKING CAUSING CONTAMINATION OF BLEED AIR. DELAYED SUBMITTAL DUE TO INABILITY TO ACCESS SYSTEMMar 22, 2022 · N402LF · Bell 407 · Engine Bleed Air SystemSDR QMLA2022032120020None · noneCREW SUSPECTED FUEL SMELL IN REAR SEAT. *** NOTE THIS AIRCRAFT STILL REMAINS OUT OF SERVICE AT THIS TIME FOR TROUBLE SHOOTING, NO PARTS HAVE YET BEEN FOUND AT THIS TIME TO BE FAILING AND THE FUEL SMELL HAS YET TO BE DUPLICATED.***Mar 17, 2022 · N223AM · Bell 407 · Aircraft Fuel SystemSDR QMLA2022031020016None · tornCREW REPORTING FAINT FUEL ODOR IN THE REAR CABIN ON APPROACH. SOUND PROOFING BAGS P/N: 222-025-026-105 & 222-025-026-101 WERE FOUND TO BE TORN AND HAD PREVIOUSLY HAD CONTACT WITH FUEL.Mar 9, 2022 · N687AM · Bell 407 · Aircraft Fuel SystemSDR QMLA2022022220013Cylinder · defectiveBIRD STRIKE IMPACTED EMERGENCY FLOATATION SYSTEM CABLE ON UNDERSIDE OF AIRCRAFT NEAR FRONT LANDING GEAR CROSS TUBE AT 117 KIAS AND CAUSED THE FLOATS TO DEPLOY AND INFLATE. BUFFETING AND VIBRATION A RESULT OF EXCESS AIRSPEED UNTIL A DECEL BELOW 65 KIAS WAS ESTAFeb 20, 2022 · N470WC · Bell 407 · Landing Gear SystemSDR 2VKA2022030720221Pitch Link · crackedDURING THE PREFLIGHT INSPECTION ONE OF THE BEARINGS ON THE TAIL ROTOR PITCH CHANGE LINK WAS FOUND WORN. THE BEARING STARTED TO WEAR THROUGH THE OUTER RACE AND THE PITCH CHANGE LINK WAS CRACKED.Feb 16, 2022 · N561SF · Bell 407 · Tail Rotor Control SystemSDR QMLA2022021420010Connector · brokenDURING FLIGHT FULL COMM FAILURE. PILOT WAS APPROACHING CLASS B AIRSPACE WITH PATIENT ONBOARD. HE MADE A PRECAUTIONARY LANDING AT KBVU AND CALLED FOR RESCUE HELICOPTER TO TRANSPORT PATIENT. TROUBLESHOT SYSTEM FOUND CONNECTOR HAD SPUN AND BROKE 1 CONNECTION ON BFeb 12, 2022 · N404LL · Bell 407 · Communications SystemSDR QMLA2021121420065Vent Line · damagedCREW NOTICED FUEL SMELL IN COCKPIT. AIRCRAFT RETURNED TO BASE AND FUEL CAP WAS RESEATED AND SMELL COULD NOT BE DUPLICATED ON NEXT RUN. THEN AIRCRAFT WAS FLOWN TO A MAINTENANCE FACILITY WITH NO FUEL SMELL IN FLIGHT, BUT DURING OTHER MAINTENANCE THE FUEL VENT Dec 13, 2021 · N408LL · Bell 407 · Aircraft Fuel Distribution SystemSDR 2VKA820None · noneTHE FORWARD AND AFT LONGERONS IN THE TAIL CONE PART NUMBERS 206-031-314-037 AND 206-031-314-145 ARE CRACKED IN HALF AT STATION 192.Oct 4, 2021 · N820SF · Bell 407 · Fuselage Main, Longeron/StringerSDR IAVA91WH91921Seal · misalignedAFTER DEPARTING KPTN ABOUT 15 MINUTES OUT TRANSMISSION LOW PRESSURE LIGHT ILLUMINATED AND TRANSMISSION OIL PRESSURE WAS READING LOW AND ERRATIC. TRANSMISSION OIL TEMPERATURE WAS READING HIGH. PILOT LANDED IN A FIELD. UPON SHUTTING DOWN THERE WAS OIL ON THE SIDSep 19, 2021 · N91WH · Bell 407 · Main Rotor GearboxSDR LR7A2021070902915Engine · flamed outDURING SCHEDULED FLIGHT, #3 ENGINE FLAMED OUT ON APPROACH/LANDING. / REMOVED, INSPECTED AND REPLACED #3 ENGINE LOW PRESSURE FUEL FILTER, HIGH PRESSURE FUEL FILTER AND SPEED VALVE FILTER. INSPECTED AND CLEANED #3 ENGINE FHS FILTER AND FUEL CONTROL C/P LINE FORJul 9, 2021 · N407LC · Lkheed 382G · Engine (Turbine/Turboprop)SDR QMLA2021071420036Unknown · noiseLOUD ABNORMAL POPPING NOISE DURING TAKEOFF. INTERROGATED ECU FOR FAULTS NONE FOUND, INSPECTED ALL ROTATING COMPONENTS NO DEFECT FOUND, INSPECTED FLIGHT CONTROLS UNDER PILOT AND COPILOTS SEAT AND BROOM CLOSET, NO DEFECTS FOUNDINSPECTED ENGINE AND COMPRESSOR NJul 9, 2021 · N407VV · Bell 407 · Fuselage Structure (General)SDR AC2R2021070240701Combust Chamber · leakingA SPECIAL INSPECTION WAS INITIATED ON ALL OF THE OUTER COMBUSTION CASES IN THE FLEET IAW ROLLS-ROYCE OVERHAUL MANUAL M250-C47B 72-40-00. AIR LEAKAGE WAS FOUND BETWEEN THE TUBE ATTACH FLANGE AND THE OUTER COMBUSTION CASE BODY. THE OUTER COMBUSTION CASE WAS REMJul 2, 2021 · N401GC · Bell 407 · Turbine SectionSDR EVCA202107070001Unknown · odorFUEL SMELL IN CABIN. AIRCRAFT WAS INSPECTED AND NO FAULTS WERE NOTED. AIRCRAFT WAS RETURNED TO SERVICE.Jun 9, 2021 · N649AE · Bell 407 · Air Distribution SystemSDR HDNA2021051410004Monitoring Unit · failedREPORTED SMOKE BILLOWING OUT OF THE TOP LEFT CORNER CABIN RIGHT ABOVE THE IRIS CAMERA AND BELOW THE GREENHOUSE. CREW SITTING IN AFT RIGHT FORWARD FACING SEAT SAW SMOKE COMING OUT OF THE MEDICAL ELECTRICAL MONITOR PLUG WHICH OPERATES ON 115V. CREW QUICKLY UNPMay 14, 2021 · N613PA · Bell 407 · Cabin Equipment/FurnishingsSDR QMLA2021022420009Deck Plate · crackedONE INCH CRACK FOUND IN AVIONICS DECK, FUSELAGE STATION 204.00, BUTTOCK LINE LEFT -13 INCHES, WATER LINE 59 INCHES.Feb 24, 2021 · N773AL · Bell 407 · Fuselage Main, StructureSDR QMLA2021021820007Indicator · inoperativePILOT NOTED NO TRANSMISSION OIL PRESSURE INDICATION ON THE TRANSMISSION OIL PRESSURE GAUGE. THE CAWS PANEL TRANSMISSION WARNING LIGHT WAS NOT ILLUMINATED INDICATING THAT THERE WAS INDEED TRANSMISSION OIL PRESSURE. DURING TROUBLESHOOTING TRANSMISSION PRESSUREFeb 15, 2021 · N407VV · Bell 407 · Main Rotor GearboxSDR 2VKA 0012021Control Panel · inoperativeTHE SCREEN ON OUTERLINK DIALER (SATELLITE RADIO) FROZE, THE PILOT COULD NOT COMMUNICATE OR CHANGE CHANNELS ON THE DIALER.Jan 4, 2021 · N793SF · Bell 407 · Communications SystemSDR M3XA20201222007Turbine · overtempPILOT PERFORMED A PL WITH A PATIENT ON BOARD FOR AN MGT EXCEEDANCE INDICATION ILLUMINATED DURING FLIGHT. PATIENT WAS TRANSPORTED BY GROUND. INSTRUMENTS DOWNLOADED AND REVEALED A PEAK OF 737 DEG TEMP EXCEEDANCE. ENGINE INSPECTED IAW ENGINE INSPECTION TABLEDec 23, 2020 · N470YB · Bell 407 · Engine (Turbine/Turboprop)SDR QMLA2020121620067Fuel Line · looseFUEL SMELL WAS NOTED BY CREW IN FLIGHT AND LANDED AT HOSPITAL PAD IN FREDERICKSBURG, TX. AFTER SHUTDOWN THE PILOT OPENED ENGINE COWLS TO INVESTIGATE AND FOUND WET LIQUID ON THE OUTBOARD SIDE OF HMU AT B-NUT. THE PILOT TOOK AIRCRAFT OUT OF SERVICE AND REPORTEDec 14, 2020 · N696AM · Bell 407 · Engine Fuel DistributionSDR QMLA2020111620063Transducer · unserviceableENGINE HAD FLUCTUATIONS IN MGT AND TQ DURING FLIGHT. SUSPECT MOTION CONTROL TRANSDUCERS UNDER COPILOT SEAT.Nov 15, 2020 · N420GA · Bell 407 · Engine Fuel and ControlSDR QMLA2020111620064Cartridge · failedEN ROUTE TO SCENE CALL, APPROXIMATELY 2 NM OUT (1 MIN), LEFT FUEL BOOST ILLUMINATED, CIRCUIT BREAKERS VERIFIED IN POSITION. SWITCHES VERIFIED IN ON POSITION. DETERMINED TO RETURN TO RTB. R & R BOOST PUMP CARTRIDGE TO FIX PROBLEM.Nov 15, 2020 · N229AM · Bell 407 · Fuel Boost PumpSDR QMLA2020111620062Transmission · usedWHILE ENROUTE TO THE HOSPITAL FROM A SCENE CALL, THE XMSN CHIP LIGHT ILLUMINATED. IMMEDIATE PRECAUTIONARY LANDING WAS CONDUCTED WITHOUT INCIDENT. MAINTINENCE FOUND SMALL METALLIC PARTICLES ON THE LOWER CHIP DETECTOR. GEARBOX OIL AND FILTER WERE DRAINED AND Nov 13, 2020 · N407VV · Bell 407 · Main Rotor GearboxSDR QMLA2020111120061Pump · inoperativePILOT REPORTED FADEC DEGRADE AND THAT RT BOOST PUMP SWITCH WOULD NOT STAY IN THE ON POSITION. TROUBLESHOT PROBLEM AND FOUND THAT RT FUEL BOOST PUMP WAS INOPERABLE WHEN SWITCH WAS FLIPPED. OVERDRAW FROM THE FAILED PUMP CAUSED THE SWITCH TO FLIP FROM THE ON TONov 10, 2020 · N409LM · Bell 407 · Fuel Boost PumpSDR QMLA2020110520058Blade · brokenPILOT REPORTED THAT VIBRATIONS AND GRINDING NOISES WERE FELT IN FLIGHT WITH THE AIR CONDITIONER RUNNING. FOUND THE CONDENSER FAN BLADE HUB BROKEN AWAY FROM THE REST OF THE BLADE ASSEMBLY. IT WAS GRINDING ITSELF UP WHEN RUNNING. INSPECTED T/R DRIVE SYSTEM, TNov 4, 2020 · N189AM · Bell 407 · Cabin Cooling SystemSDR EVCA202011031Combustion Liner · crackedDURING HOT SECTION INSPECTION FOLLOWING TOT EXCEEDANCE, CRACKS IN THE COMBUSTION LINER WERE FOUND.Oct 31, 2020 · N489AE · Bell 407 · Turbine Engine Combustion SectionSDR EVCA202010212Fuel Nozzle · corrodedDURING ROUTINE MAINTENANCE, CORROSION AND PITTING WAS DISCOVERED ON THE FUEL NOZZLE SHROUD.Oct 20, 2020 · N512MT · Bell 407 · Fuel Injector NozzleSDR QMLA2020101520054Fuel Cap · leakingFUEL SMELL IN CABIN DURING CLIMB PHASE OF FLIGHT. FUEL CAP WAS FOUND TO BE LEAKING FUEL. NEW FUEL CAP PN 206-362-002-103 IS BEING INSTALLED.Oct 14, 2020 · N404LL · Bell 407 · Fuel StorageSDR QMLA2020101620055Engine · making metalENROUTE TO PICK UP PATIENT, PILOT GOT AN ENGINE CHIP INDICATION AND LANDED AIRCRAFT IN NEAREST SAFE LAND SPOT POSSIBLE, IN A PASTURE. MECHANIC WAS DISPATCHED TO AIRCRAFT. MECHANIC FOUND METALLIC PARTICLES ON LOWER ENGINE CHIP PLUG EXCEEDING RR MM GUIDELINES.Oct 14, 2020 · N193AM · Bell 407 · Engine (Turbine/Turboprop)SDR QMLA2020093020050Fuel Filter · leakingFUEL FILTER ASSY DEVELOPED A LEAK. WAS CHANGED OUT THEN THE SERVICEABLE ONE INSTALLED. OPS CHECK GOOD FOR MAINTENANCE, BUT THE NEXT DAY ON PREFLIGHT INSPECTION BY THE PILOT THE FILTER "BYPASS" WARNING LIGHT BUTTON ON THE ASSY WOULD NOT OPERATE CORRECTLY. PASep 26, 2020 · N408GA · Bell 407 · Aircraft Fuel Distribution SystemSDR EVCA202009181Fuel Nozzle · corrodedDURING ROUTINE MAINTENANCE, CORROSION WAS VISUALLY DISCOVERED ON THE ENGINE FUEL NOZZLE SHROUD FACE.Sep 17, 2020 · N491AE · Bell 407 · Fuel Injector NozzleSDR QMLA2020090820046Motor · odorDURING A RETURN-TO-BASE LEG IN LEVEL CRUISE THE MED CREW NOTED A MILD BURNT ELECTRICAL SMELL COMING FROM THE AIR-CONDITIONER VENTS. THE PILOT TURNED OFF THE AIR-CONDITIONER AND THE SMELL DISSIPATED. UPON EVALUATION BY MAINTENACE THE AFT BLOWER MOTOR WAS INOPSep 7, 2020 · N941AM · Bell 407 · Air Distribution FanSDR QMLA2020082020040Hmu · unserviceableAFTER ESTABLISHING CRUISE FLIGHT ON THE WAY TO A SCENE LOCATION AND NOT UTILIZING REMAINING POWER AVAILABLE PILOT PULLED MORE COLLECTIVE TO EXPEDITE EN-ROUTE TIME. ONCE REACHING APPROXIMATELY 85% TRQ, TRQ DROPPED WITHOUT PILOT MANIPULATION, OVERCORRECTED AND TAug 18, 2020 · N408LN · Bell 407 · Fuel Controlling System
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