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 QMLA2024081220098Unknown · odorELECTRICAL SMOKE SMELL IN CABIN DURING CLIMB, INSPECTED FOLLOWING AREAS: BAGGAGE BIN, AREA ABOVE BAGGAGE BIN, HATRACK MED MODULE, AREA BEHIND HATRACK, ENGINE COMPARTMENT, TRANSMISSION COMPARTMENT. CREW SAID SMELL WAS COMING FROM BACK. NO FAULTS FOUND, GROUND RAug 11, 2024 · N292AM · Bell 407 · Air Distribution SystemSDR QMLA2024081220097Oil Cooler · failedDURING TAKEOFF AND INITIAL CLIMB FROM KFMM, THE ENGINE OIL TEMPERATURE EXCEEDED ITS MAXIMUM LIMIT OF 107°C, REACHING A PEAK OF 116°C. THE EXCEEDANCE WAS IDENTIFIED SHORTLY AFTER TAKEOFF, PRIOR TO TRANSITIONING TO CRUISE FLIGHT. UPON OBSERVING THE ABNORMAL TEMAug 8, 2024 · N370AM · Bell 407 · Engine Oil CoolerSDR 2024FA0000524Washer · crackedWHILE CHANGING TRANSMISSION ASSEMBLY TECHNICIAN FOUND PYLON RETAINING BOLT WASHER PN:140-007-25S22E6 CRACKED ACROSS ONE SIDE ALL THE WAY THROUGH.Jul 23, 2024 · N390SF · Bell 407 · Fuselage Main, StructureSDR QMLA2024072220089Oil System · overtempFOUR MINUTES AFTER TAKEOFF WHILE CLIMBING TO CRUISE ALTITUDE, ENGINE OIL TEMPERATURE INDICATED 109C AND INCREASING (MAX 107C). HELICOPTER LANDED 2 MINUTES LATER AND ENGINE OIL TEMPERATURE HAD REACHED 133C. REMOVED AND REPLACED ENGINE IAW BH 407GX MM 407-A-71-Jul 21, 2024 · N293AM · Bell 407 · Engine Oil TemperatureSDR QMLA2024070520084Hmu · faultedRESTART FAULT LIGHT ILLUMINATED IN FLIGHT. FUEL METERING VALVE POTENTIOMETER FAULT. WFMV FAULT & WFMV RATE FAULT RECORDED ON FADEC.Jul 4, 2024 · N150AM · Bell 407 · Fuel Controlling SystemSDR QMLA2024070520083Unknown · odorLANDING AT THE HOSPITAL IN LAS VEGAS AND AFTER DROPPING OFF THE PATIENT, THE CREW INFORMED ME THERE WAS A FUEL ODOR IN THE CABIN. I WROTE UP THE DISCREPANCY AND INFORMED THE MAINTENANCE TEAM. AMT INSPECTED AIRCRAFT NO ISSUES FOUND, RTS.Jul 2, 2024 · N404LL · Bell 407 · Air Distribution SystemSDR QMLA2024062620074Engine · making metalENGINE CHIP LIGHT ON TAKE OFF. ENGINE CHANGE INITIATED.Jun 26, 2024 · N697AM · Bell 407 · Engine (Turbine/Turboprop)SDR QMLA2024062520070Unknown · odorFUEL SMELL IN CABIN DURING FLIGHT, AWAITING RESOLUTION DETAILS FROM AMTJun 23, 2024 · N101HF · Bell 407 · Air Distribution SystemSDR QMLA2024062220066Fuel Cell · overservicedDURING FLIGHT MEDCREW REPORTED FUEL SMELL. PILOT NOTED THAT AIRPORT AIRCRAFT FUELER OVER FILLED TANK.Jun 22, 2024 · N113AM · Bell 407 · Fuel StorageSDR QMLA2024062620073Connector · contaminatedWHEN EN ROUTE BACK FROM LANDER TO THE HOSPITAL IN CASPER WITH THE PATIENT, TRANSMISSION PSI GAUGE BEGAN TO FLUCTUATE STARTING AT AROUND 10 PSI WORKING ITS WAY UP TO 20 PSI OF FLUCTUATIONS. CLOSE TO CAPER ABOUT 2 MILES TO THE WEST, DECIDED TO MAKE OUR WAY BJun 22, 2024 · N941AM · Bell 407 · Main Rotor Drive System WiringSDR QMLA2024062520068Servo · noiseLOUD WHINING NOISE COMING FROM ABOVE AND AFT OF THE REAR FORWARD FACING SEATS. IT OCCURRED DURING A CLIMB AT MCP AND 60 KNOTS. AFTER TURNING AROUND AND LOWERING POWER TO RETURN TO BASE, THE NOISE SUBSIDED. REPLACED TR SERVO, RTS.Jun 21, 2024 · N911AL · Bell 407 · Tail Rotor Drive SystemSDR QMLA2024062520067Seal Ring · crackedDURING FIRST GROUND RUN FOLLOWING TURBINE ASSEMBLY REPLACEMENT, OIL WAS FOUND LEAKING FROM THE GAS PRODUCER TURBINE PRESSURE OIL NOZZLE. THIS IS NOT SOMETHING WE HAD TOUCHED. UPON INSPECTION IT WAS FOUND THAT THE SEALING RING UNDER THE NOZZLE HAD BEEN CRACKED,Jun 12, 2024 · N184AM · Bell 407 · Engine (Turbine/Turboprop)SDR QMLA2024060620060Engine · overtempFLOAT PILOT OVER TEMP THE MGT IN FLIGHT. MGT EXCEEDANCE OF 741 FOR 3 SECONDS. PERFORMED SPECIAL INSPECTION OF TURBINE AND FIRST STAGE TURBINE WHEEL, TURBINE NOZZLE AND SHIELD. NO DEFECTS NOTED. REASSEMBLED TURBINE, OPS CHECK GOOD.Jun 6, 2024 · N189AM · Bell 407 · Engine (Turbine/Turboprop)SDR 2024FA0000415Flex Line · crackedAIR COMM AIR CONDITIONING SYSTEM HIGH PRESSURE LINE LOCATED AT COMPRESSOR TO ENGINE DECK CONTINUOUSLY LEAKING AND HAVING TO REPLACE. THIS LINE DOES NOT LEAK AT THE SAME POINT ALL THE TIME BUT AT DIFFERENT LOCATIONS. WE HAVE REPLACED 4 LINES NOW IN 221.4 HRS OFMay 31, 2024 · N30HF · Bell 407 · Cabin Cooling SystemSDR QMLA2024052720056Fuel Sys · low pressurePILOT REPORTED PRECAUTIONARY LANDING AT ALBUQUERQUE DOUBLE EAGLE AIRPORT DUE TO A ZERO FUEL PRESSURE INDICATION WHILE IN FLIGHT. AFTER RESPONDING ALSO DISCOVERED THERE WAS AN EXCEEDANCE ON THE MGT RECORDED AT 798 FOR 15 SECONDS WHICH WILL REQUIRE ADDITIONAL INMay 27, 2024 · N408LL · Bell 407 · Aircraft Fuel SystemSDR QMLA2024052420054Fadec · faultedFADEC RESTART FAULT ILLUMINATED IN FLIGHT. NO OTHER ABNORMALITIES. DIVERTED TO NEARBY AIRPORT WHERE MAINTENANCE COULD BE PERFORMED. FOUND WFMV FAULT CODE. CLEARED FAULT CODE. PERFORMED NORMAL START UP AND RETURNED TO BASE.May 24, 2024 · N150AM · Bell 407 · Engine ControlsSDR QMLA2024051720052Unknown · odorMED CREW DETECTED A FUEL SMELL COMING FROM THE AIR CONDITIONING VENTS IN THE CABIN WHILE FLYING. AIRCRAFT IS CURRENTLY OUT OF SERVICE FOR TROUBLESHOOTING THIS FUEL SMELL. SUP INFO: INSPECTED AIRCRAFT AND PERFORMED A CHECK FLIGHT FOR ONE HOUR. FOUND NO EVIDENMay 16, 2024 · N101HF · Bell 407 · Air Distribution SystemSDR 2024FA0000335Flt Controls · unknownPIC ADVISED THAT WHILE ENROUTE TO SENDING FACILITY, HE RAN INTO AN ISSUE WITH FLIGHT CONTROLS. HE ADVISED HE HAD NO AUTHORITY IN THE RIGHT CYCLIC AND STARTED TO VEER OFF COURSE, EVEN WITH AUTOPILOT ENGAGED. HE THEN MADE THE DECISION TO RETURN TO BASE. AIRCRAFTApr 25, 2024 · N616PA · Bell 407 · Rotorcraft Flight ControlSDR QMLA2024042220040Transmission · making metalMAIN TRANSMISSION CHIP LIGHT ILLUMINATED IN FLIGHT DURING CLIMB SHORTLY AFTER TAKEOFF. PILOT ABORTED FLIGHT AND RETURNED TO THE BASE. MECHANIC PERFORMED UNWANTED PARTICLE INSPECTION AND FOUND ONE SLIVER. NORMAL FINDINGS AFTER MAJOR MAINTENANCE (MAST REPLACEMEApr 13, 2024 · N697AM · Bell 407 · Main Rotor GearboxSDR 2024F00097Unknown · odorWITHIN 5 MINUTES OF LANDING AT BASE LOCATION A FUEL SMELL WAS NOTED IN AFT CABIN BY MEDICAL CREW MEMBERS. DIVERTED TO NEAREST AIRPORT, APROX 2 MINUTES AWAY, AND LANDED.Mar 25, 2024 · Bell 407 · Air Distribution SystemSDR QMLA202402292022Unknown · odorPILOT REPORTED FUEL ODOR IN COCKPIT/CABIN. I INSPECTED ALL FUEL LINES AND FITTINGS IN ENGINE COMPARTMENT NO DEFECTS NOTED. INSPECTED FUEL SUMPS AND CAVITY DRAINS NO DEFECTS NOTED. INSPECTED AFT COMPARTMENT ( BAGGAGE AREA SIDE WALL PANEL ) AND AFT AVIONICS BAY.Feb 29, 2024 · N404LL · Bell 407 · Aircraft Fuel SystemSDR QMLA2024021920018Seal · wornCREW REPORTED STRONG SMELL OF EXHAUST FUMES ON PATIENT FLIGHT, ON GROUND AND DURING FORWARD FLIGHT WITH TAIL WIND. REPLACED SLIDING WINDOW SEALS ON BOTH AFT CREW DOORS. WENT ON MAINTENANCE FLIGHT, COULD NOT DETECT ANY EXHAUST FUME SMELL IN AFT CABIN ON GROUND Feb 19, 2024 · N911CN · Bell 407 · Flight Compartment WindowsSDR EVCA2024021900242Combust Chamber · crackedAIRCRAFT INDICATED ABNORMALLY HIGH OPERATING TEMPERATURE. VISUAL INSPECTION FOUND COMBUSTION CAN CRACKED NEAR FUEL NOZZLE MOUNTING POINTFeb 17, 2024 · N660AE · Bell 407 · Turbine Engine Combustion SectionSDR 7ALA202407240174Washer · crackedDURING TRANSMISSION CHANGE TECHNICIANS FOUND THREE PYLON RETAINING BOLT WASHERS PN:140-007-25S22E6 ALL CRACKED ACROSS ONE SIDE ALL THE WAY THROUGH.Jan 24, 2024 · N314SF · Bell 407 · Main Rotor GearboxSDR QMLA2024012120006Unknown · odorFUEL SMELL NOTICED BY CREW MEMBER SITTING IN FORWARD FACING PILOT SIDE SEAT DURING TAKEOFF AND CRUISE. WHEN THE AIRCRAFT WAS SLOWED BELOW 60 KNOTS, THE SMELL DISSAPATED AND THE CREWMEMBER REPORTED NO SMELL IN A HOVER. SMELL SEEMS TO ONLY BE PRESENT IN CABIN Jan 21, 2024 · N374AL · Bell 407 · Air Distribution SystemSDR HEFR202401160002Shaft · crackedTURBINE UNIT WAS RECEIVED FOR LOUD NOISE DURING IDLE AND BAD VIBRATIONS. DURING OVERHAUL INSPECTION THE PT OUTER SHAFT WAS IDENTIFIED WITH A CRITICAL ISSUE, A VISIBLE CRACK IN THE COMPONENT.Jan 16, 2024 · N812LH · Doug 600N · Turbine SectionSDR QMLA2024010620242Unknown · unknownMEDICAL CREW MEMBER SEATED IN AFT RIGHT HAND SEAT REPORTED FUEL SMELL IN CABIN DURING RETURN FLIGHT TO BASE. PILOT REPORTED CREW MEMBER STARTED MENTIONING SMELL AFTER REFUELING AIRCRAFT.Jan 4, 2024 · N911CN · Bell 407 · Air Distribution SystemSDR QMLA2023123020122Battery · inoperativeON 12/29/2023 AT 2025 HOURS, I WAS ATTEMPTING AN ENGINE START AFTER DROPPING OFF A PATIENT AT THE UNIVERSITY OF COLORADO HOSPITAL IN DENVER, CO. AFTER INITIAL STARTER WIND-UP AND INTRODUCTION OF FUEL, I COULD HEAR THAT THE START WAS SLOWER THAN NORMAL. AS I Dec 29, 2023 · N941AM · Bell 407 · Battery/Charger SystemSDR 2VKA40712252023Control Panel · smokePILOT REPORTED SMOKE COMING FROM CAUTION PANEL IN FLIGHT.Dec 25, 2023 · N407SF · Bell 407 · Central WarningSDR QMLA2023122620120Engine · failedDURING RETURN FLIGHT FROM PATIENT DROP OFF ENGINE CHIP WARNING LIGHT ILLUMINATED. LANDED WITHOUT ISSUE. MECHANIC REMOVED CHIP DETECTOR AND FOUND MULTIPLE METAL PARTICLES AND PARTICLES IN FILTER. PERFORMED DRAIN AND FLUSH AND ATTEMPTED 30 MIN PENALTY RUN. ENGINDec 24, 2023 · N697AM · Bell 407 · Engine (Turbine/Turboprop)SDR QMLA2023122120116Engine · warning lightENGINE CHIP LIGHT ILLUMINATED DURING TAKE OFF, RETURNED TO LANDING AREADec 20, 2023 · N776AL · Bell 407 · Engine (Turbine/Turboprop)SDR QMLA2023122120117Unknown · unknownINLET BARRIER FILTER LIGHT ILLUMINATED IN FLIGHT BY PILOT 18926. PROBLEM DETERMINED TO BE DUE TO A PARTIALLY CLOGGED FILTER. PILOT RETURNED TO BASE AFTER SEEING THE AFS FILTER LIGHT DURING HIGH POWER SETTINGS. LIGHT EXTINGUISHED AFTER POWER WAS REDUCED. INSPECDec 20, 2023 · N408LL · Bell 407 · Engine Bleed Air SystemSDR QMLA2023120220112Unknown · unknownFLIGHT CREW REPORTED FUEL ODOR IN REAR CABIN. I INSPECTED FUEL BOOST PUMP COVERS AND CAVITY DRAINS NO LEAKS NOTED. INSPECTED ALL FUEL LINES INCLUDING VENT LINES IN AFT BAGGAGE AREA LO LEAKS OR DEFECTS NOTED. HAD PILOT RUN ENGINE AT 100% AND INSPECTED ALL FUEL Dec 2, 2023 · N404LL · Bell 407 · Aircraft Fuel SystemSDR JAPA2023112200771Deck Plate · crackedCRACK IN THE BOTTOM ENGINE DECK WHERE THE AIR-CONDITIONING LINES COME THROUGH. REPAIR MADE WITH BELL DATA.Nov 22, 2023 · N407SL · Bell 407 · Fuselage Main, StructureSDR QMLA2023111620106Engine · making metalENGINE CHIP LIGHT ILLUMINATED IN FLIGHT.Nov 16, 2023 · N776AL · Bell 407 · Engine (Turbine/Turboprop)SDR QMLA2023122220119Frame · unknownSUSPECTED A CRACK IN THE TAILBOOM ATTACH POINT FRAME ASSY. CONFIRMED PART WAS ACTUALLY CRACKED (AFTER DETAILED VISUAL INSPECTION) AT THE UPPER RH BOLT HOLE AREA AFTER PART REMOVAL . REPLACED FRAME WITH A NEW UNIT AT THAT POINT. P/N OFF SUSPECTED P/N 206-032-Nov 14, 2023 · N150AM · Bell 407 · Fuselage Main, FrameSDR QMLA2023111420104Unknown · unknownDURING RETURN FLIGHT TO BASE, CREW SMELLED A HOT BRAKE BURNING SMELL, THEN IT QUICKLY DISSIPATED. NO OTHER INDICATIONS WERE NOTED. PILOT SEEMED TO FEEL A LIGHT AMOUNT OF RESISTANCE ON CYCLIC CONTROL. LANDED BACK AT BASE WITH NO ISSUE AND CALLED MECHANIC TO Nov 13, 2023 · N408LL · Bell 407 · DoorsSDR QMLA2023101920094Unknown · unknownFADEC FAULT AND RESTART FAULT LIGHTS ILLUMINATED DURING FLIGHT WHILE CIRCLING TO LAND AT A SCENE CALL. TROUBLESHOT FADEC SYSTEM USING FADEC FAULT ISOLATION MANUAL 73-25-04-110. INSPECTED CONNECTORS AND RE-SEATED THEM. OHMED OUT THERMOCOUPLES AND THEY HAVE POct 18, 2023 · N224AM · Bell 407 · Central WarningSDR QMLA202310190095Unknown · unknownDURING CRUISE FLIGHT THE MASTER WARNING LIGHT AND AUDIO ALERTED. WHEN SCANNING THE GAUGES, I NOTICED THE TRANSMISSION PRESSURE DROP BELOW LIMITS. BRIEFED THE CREW WHAT WAS HAPPENING AND TOLD THEM WE HAVE TO FIND A PLACE TO LAND NOW. WE AREN'T GOING TO MAKE IT Oct 17, 2023 · N693AM · Bell 407 · Central WarningSDR QMLA2023101220088Unknown · unknownENGINE OIL PRESSURE LIGHT ILLUMINATED SHORTLY AFTER TAKE OFF. LIGHT FLICKERED A COUPLE OF TIMES, THAN STAYED ILLUMINATED AS AIRCRAFT TURNED BACK TOWARDS BASE, THAN EXTINGUISHED ON DECENT INTO BASE. OIL PRESSURE LIGHT WAS NOT ILLUMINATED UPON SHUTDOWN. AIRCRAFTOct 12, 2023 · N776AL · Bell 407 · Engine Oil System (Airframe Furnished)SDR QMLA2023101020086Unknown · unknownFLIGHT CREW NOTICED AN ACRID SMELL IN THE CABIN AREA RESEMBLING BURNING RUBBER / PLASTIC. NO VISIBLE CUES NOTED. ALL FLIGHT AND ENGINE GAGES NORMAL. OPENED UP AREAS INSIDE THE UPPER AFT HELL HOLE AREA AND INSPECTED, ALSO CHECKED THE ENGINE BAY FOR AIR CONDITOct 10, 2023 · N407TX · Bell 407 · Air Distribution SystemSDR EVCA202310020001Support · crackedA CRACK WAS LOCATED IN THE L/H FLANGE SUPPORT FOR THE OIL COOLER COWLING DURING INSPECTIONS.Sep 28, 2023 · N481AE · Bell 407 · Fuselage Miscellaneous StructureSDR QMLA2023092720078Unknown · unknownDURING FLIGHT, (SEVERAL LEGS) AN ODOR OF FUEL (JET A) WAS PRESENT. AS THE FLIGHT CONTINUED THE ODOR BECAME MORE INTENSE, AS REPORTED BY MED CREW. THIS HAS BEEN OBSERVED BEFORE ON PREVIOUS DATES AND HAS BEEN REPORTED IN THE AIRCRAFT MAINTENANCE LOGBOOK, REPAIRESep 23, 2023 · N696AM · Bell 407 · Aircraft Fuel SystemSDR QMLA2023081920065Gearbox · unknownMAINTENANCE PERFORMED 60 MONTH INSPECTION ON THE TAIL ROTOR ASSEMBY AND REPLACED THE TAIL ROTOR GEARBOX FROM AN OVERHAULED ONE SENT FROM FAA REPAIR STATION J80R365Y EASA.145.5160 ARIZONA. ON 19 AUGUST APPROXIMATELY 0620 CREW EXPERIENCED AN INTERMITTENT T/R CHIAug 19, 2023 · N372AM · Bell 407 · Tail Rotor GearboxSDR QMLA2023082120066Fuel Nozzle · unknownFUEL NOZZLE CAUSED FADEC DEGRADE & ENGINE RESTART FAULT LIGHTS TO ILLUMINATE IN FLIGHT (CREW ALSO REPORTED AUDABLE TONE CHANGE OF THE START), CONFIRMED FAILURE WHEN INSTALLED NEW FUEL NOZZLE DESCREPANCIES CLEARED.Aug 18, 2023 · N184AM · Bell 407 · Engine Fuel and ControlSDR QMLA2023072820053Blower Motor · failedCREW SMELLED ELECTRICAL SMELL IN THE PASSENGER COMPARTMENT.Jul 27, 2023 · N901NM · Bell 407 · Air Distribution FanSDR QMLA2023072520055Transmission · making metalXMSN CHIP LIGHT CAME ON DURING CRUISE FLIGHT.Jul 25, 2023 · N223AM · Bell 407 · Main Rotor Drive SystemSDR QMLA2023071320052Unknown · unknownPASSENGER SICK, AIR LIFE REPORTING PROCESS REPORTED FUEL SMELL IN CABIN, PER PILOT THE PASSENGER WAS SICK UNRELATED TO ANY SMELL'S IN THE CABIN. TWO (22) ADDITIONAL MAINTENANCE FLIGHT COMPLETED WITH NO NOXIOUS SMELLS NOTED.Jul 13, 2023 · N779AL · Bell 407 · Engine Bleed Air SystemSDR 2023FA0000324Vane · separatedOPERATOR NOTICE LOSS IN ENGINE POWER. KEYSTONE TESTED THE ENGINE TO VERIFY POWER NUMBERS. TECHNICIAN INSPECTED THE COMPRESSOR TO DISCOVER DIFFUSER VANE ASSEMBLY HAD VANES SEPARATING FROM AFT PLATE. PART PREVIOUSLY OVERHAULED FROM APPROVED VENDOR.Jun 21, 2023 · Turbine Engine Compressor SectionSDR QMLA2023042520033Transmission · unknownWHILE IN CRUISE FLIGHT, TRANSMISSION CHIP DETECTOR LIGHT ILLUMINATED ALONG WITH A CAUTION LIGHT AND AUDIBLE ALERT.LANDED IMMEDIATELY AND MX INSPECTED CHIP DETECTORS. FOUND FERROUS METAL FLAKE MATERIAL ON MGB CHIP PLUG (LOWER) AND DETERMINED TO BE SIGN OF NORMAApr 24, 2023 · N208AM · Bell 407 · Main Rotor Drive System
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