Bell 412

Service difficulty reports · 4,516

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 aircraft_model_key = '412'
  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 HAIHEEA9393Receiver · inoperativeDME INOPERATIVE WILL NOT RECEIVE STATIONS. SENT TO COLLINS AVIONICS FOR EXCHANGE.Apr 16, 1997 · N1202T · Bell 412 · DME/TACAN SystemSDR HAIHEEA9382Altimeter · failedRADAR ALT NEEDLE GOES TO MAX ALTITUDE WHEN TESTED.Apr 16, 1997 · N2148K · Bell 412 · Ground Proximity SystemSDR HAIHEEA9381Altimeter · erraticRADAR ALT ERRATIC ABOVE 1000 FEET.Apr 16, 1997 · N2148K · Bell 412 · Ground Proximity SystemSDR HAIHEEA9376Bearing · failedBEARING CAGE DRAGGING ON INNER RACE. REMOVED FROM YV-0-CVG-11. REPLACED WITH SERVICEABLE BEARING.Apr 16, 1997 · Bell 412 · Main Rotor GearboxSDR HAIHEEA9374Indicator · defectiveATTITUDE INDICATOR PRECESSES AND LIGHT INOPERATIVE.Apr 16, 1997 · N1202T · Bell 412 · Attitude Gyro and Indicating SystemSDR HAIHEEA9373Indicator · defectiveINDICATOR LIGHT INOPERATIVE.Apr 16, 1997 · N1202T · Bell 412 · Attitude Gyro and Indicating SystemSDR HAIHEEA9371Indicator · defectiveR/T FLAG INTERMITTENTLY STICKS IN VIEW. TIME SINCE REPAIR 11:55.Apr 16, 1997 · N2149S · Bell 412 · Attitude Gyro and Indicating SystemSDR HAIHEEA9370Control · defectiveAUTOPILOT HPI STAYS ON.Apr 16, 1997 · N3893P · Bell 412 · Autopilot SystemSDR HAIHEEA9363Altimeter · light dimRADAR ALT DEC LIGHT VERY DIM.Apr 15, 1997 · N2148K · Bell 412 · Ground Proximity SystemSDR HAIHEEA9362Receiver · defectiveADF AUDIO SCRATCHY ON ALL FREQUENCIES.Apr 15, 1997 · N2014K · Bell 412 · Automatic Direction Finder (ADF) SystemSDR HAIHEEA9358Blade · defectiveUNABLE TO TRACK BLADE.Apr 15, 1997 · N21498 · Bell 412 · Main Rotor BladesSDR HAIHEEA9357Blade · defectiveUNABLE TO TRACK BLADE.Apr 15, 1997 · N21498 · Bell 412 · Main Rotor BladesSDR HAIHEEA9355Blade · cover missingSHORTLY AFTER TAKEOFF, AIRCRAFT DEVELOPED SEVERE VIBRATION. LANDED IMMEDIATELY WITHOUT INCIDENT. FOUND TIP COVER MISSING FROM ONE T/R BLADE.Apr 15, 1997 · N293CA · Bell 412 · Tail Rotor BladesSDR HAIHEEA9354Transceiver · malfunctionWILL NOT TRANSMIT. WHILE TRANSMITTING BACKGROUND NOISE PRESENT. PERFORMED PRELIMINARY INSPECTION AND FOUND PHOTOCELL LENS MISSING AND TRANSFER SWITCH S102 BAD; ALSO FOUND HEADER MOD NOT PERFORMED. REPLACED PHOTOCELL LENS, S102 TRANSFER SWITCH AND P201 HEADERApr 15, 1997 · N107X · Bell 412 · VHF Communications SystemSDR HAIHEEA9353Comm Control · defectiveDISPLAY INTERMITTENT, BLINKS ON AND OFF. PERFORMED PRELIMINARY INSPECTION. FOUND DISPLAY DIM. REPLACED PHOTOCELL V101. REPAIRED. CHECKED 28V LIGHTING. BENCH CHECK GOOD.Apr 15, 1997 · N107X · Bell 412 · VHF Communications SystemSDR HAIHEEA9350Control · inoperativeXPONDER CONTROL INOPERATIVE; SMOKED.Apr 15, 1997 · N107X · Bell 412 · ATC Transponder SystemSDR HAIHEEA9348Nav Control · defectiveDIGITS WILL NOT DIM. FOUND DISPLAY TO BE VERY DIM. REPLACED PHOTOCELL V101. REPAIRED. WHEN INNER INC/DEC KNOB IS PULLED OUT, FOUND SEGMENTS IN "STBY" LIT UP IN WRONG PLACES. FOUND CORROSION ON DISPLAY PINS AND ON BOARD. CLEANED CORROSION ON DISPLAY BOARDAApr 15, 1997 · N7128R · Bell 412 · Visual Omnirange (VOR) SystemSDR HAIHEEA9343Blade · out of specBLADE IS TOO HEAVY AT THE TIP. THE OUTBOARD LEADING EDGE STRIP WAS CHANGED AT COMPOSITE TECHNICS. THE BLADE COULD NOT BE PUT INTO RANGE.Apr 15, 1997 · Bell 412 · Main Rotor BladesSDR HAIHEEA9335Spindle · separationDAMPER SEPARATED, SHIMS EXPOSED (RUBBER SEPARATION)Apr 15, 1997 · N21498 · Bell 412 · Main Rotor HeadSDR HAIHEEA9329Indicator · defectiveLIGHTS FLICKER CONSTANTLY. PERFORMED PRELIMINARY INSPECTION. TROUBLESHOT AND REPLACED V901 PHOTOCELL. BENCH CHECK GOOD.Apr 15, 1997 · N3893P · Bell 412 · DME/TACAN SystemSDR HAIHEEA9324Indicator · failedROTOR WILL NOT SPIN.Apr 15, 1997 · N107X · Bell 412 · Attitude Gyro and Indicating SystemSDR AU970444Bearing · spalled(AUS) ENGINE REDUCTION GEARBOX HAD EXCESSIVE METAL CONTAMINATION - CHIP DETECTOR LIGHT ILLUMINATED - INVESTIGATION FOUND LH AND RH NO10 BEARINGS SPALLEDApr 14, 1997 · Bell 412 · Turbine Engine Reduction GearSDR HAIHEEA9309Indicator · failedROTOR NEEDLE STAYS AT 50 TO 70% AT ENGINE 100%.Apr 1, 1997 · N3911L · Bell 412 · Main Rotor Indicating SystemSDR HAIHEEA9308Yaw Control · failedACTUATOR FULLY EXTEND WILL NOT RETRACT.Apr 1, 1997 · N2014K · Bell 412 · Tail Rotor Control SystemSDR HAIHEEA9306Indicator · reads highAIR SPEED INDICATOR 10 KNOTS HIGH AT 50 KNOTS.Apr 1, 1997 · N108X · Bell 412 · Airspeed/Mach IndicatorSDR HAIHEEA9301Indicator · precessingCOCKPIT ATTITUDE INDICATOR PRECESSING.Apr 1, 1997 · N107X · Bell 412 · Attitude Gyro and Indicating SystemSDR HAIHEEA9285Transponder · corrodedTRANSPONDER HAS CORROSION IN UNIT. PERFORMED PRELIMINARY INSPECTION AND CLEANED EXCESSIVE CORROSION ON CHASSIS. REPLACED BUSHING AND INSULATOR FOR TRANSISTOR Q104 DUE TO CORROSION. FOUND UNIT WENT OFF LINE. FOUND UNIT TO BE STAYING IN TEST MODE. REPLACED Mar 31, 1997 · Bell 412 · ATC Transponder SystemSDR HAIHEEA9279Pump · inoperativePUMP INOPERATIVE.Mar 31, 1997 · N21498 · Bell 412 · Fuel Boost PumpSDR HAIHEEA9273Battery · failedBATTERY UNIT FAILED DIELECTRIC TEST. INSULATION MELTING.Mar 31, 1997 · N2298Z · Bell 412 · Battery/Charger SystemSDR HAIHEEA9269Fuel Cell · crackedFUEL CELL CRACKED AND UNBONDED SEAMS.Mar 31, 1997 · N3911L · Bell 412 · Fuel StorageSDR HAIHEEA9262Cell Assy · crackedCELL ASSY DOUBLER SEAMS CRACKED.Mar 31, 1997 · N107X · Bell 412 · Fuel StorageSDR HAIHEEA9261Skidtube · corrodedSKID TUBE CORRODED.Mar 31, 1997 · N3893P · Bell 412 · Main Landing Gear Strut/Axle/TruckSDR HAIHEEA9260Skidtube · corrodedSKID TUBE CORRODED BEYOND LIMITS.Mar 31, 1997 · Bell 412 · Main Landing Gear Strut/Axle/TruckSDR HAIHEEA9259Skidtube · corrodedSKID TUBE CORRODED BEYOND LIMITS.Mar 31, 1997 · N3893L · Bell 412 · Main Landing Gear Strut/Axle/TruckSDR HAIHEEA9255Tach Generator · shaft shearedSHAFT SHEARED. INSPECTED BY ACCESSORY OVERHAUL AND FOUND NO PROBLEM WITH TACH. GEN THAT WOULD HAVE CAUSED SHAFT TO SHEAR.Mar 31, 1997 · N3893S · Bell 412 · Engine RPM Indicating SystemSDR 98ZZZX1267Line · chafedLOST PRESSURE TO NR 2 HYDRAULIC SYSTEM IN-FLIGHT. LANDED ON AN OFFSHORE PLATFORM WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND HYDRAULIC LINE CHAFED AND LEAKING. APPEARED TO HAVE CHAFED ON ADJACENT FLEX HOSE. REF: 412 IPC, CHAPTER 29-99-00, PAGE 36, FIGURE Mar 25, 1997 · N3893N · Bell 412 · Hydraulic System, MainSDR CZMA061409Motor · wornMOTOR TEMPERATURE CONTROL INOPERATIVE.Mar 17, 1997 · N911BE · Bell 412 · Cabin Temperature Control SystemSDR CZMA061345Controller · wornSERVO INOPERATIVE.Mar 17, 1997 · N911BE · Bell 412 · Air Distribution SystemSDR HEEA979211Actuator Rotary · bindingROTARY ACTUATOR CAUSING BINDING IN CYCLIC.Mar 12, 1997 · N33008 · Bell 412 · Main Rotor ControlSDR HEEA979204Battery Pack · failedBATTERY PACK FAILED CAPACITY TEST.Mar 12, 1997 · N2014K · Bell 412 · Battery/Charger SystemSDR HEEA979199Ejector Assy · crackedCRACKED. SENT TO LORI FOR INSPECTION AND REPAIR.Mar 12, 1997 · N2148K · Bell 412 · Engine Collector/Tailpipe/NozzleSDR HEEA979197Ejector Assy · defectiveEJECTOR ASSY LOOSE RIVETS AND CRACKED.Mar 12, 1997 · N2261D · Bell 412 · Engine Collector/Tailpipe/NozzleSDR HEEA979192Altimeter · sticksSTICKS AND IS OFF 40 FEET STATIC.Mar 12, 1997 · N108X · Bell 412 · Altimeter, Barometric/EncoderSDR HEEA979182Transciever · defectiveLOOSE PARTS INSIDE. FOUND COIL L505 BROKEN AND LOOSE ON TRANSMITTER BOARD. REPLACED L505 COIL. PERFORMED SERVICE BULLETIN NO. KTR908-2 TO INCREASE RELIABILITY OF MODULATOR CIRCUITRY. ADJUSTED POWER OUT, MODULATION, SIDETONE, SQUELCH AND CARRIER. UNIT BENCHMar 12, 1997 · Bell 412 · VHF Communications SystemSDR HEEA979177Blade · not drilledRECEIVED FROM THE VENDOR WITH A NEW LEADING EDGE ABRASION STRIP INSTALLED BUT THE HOLES WERE NEVER DRILLED FOR THE WEIGHT POCKET.Mar 12, 1997 · N23023 · Bell 412 · Main Rotor BladesSDR HEEA979175Receiver · failedRECEIVER INOPERATIVE AUDIO; DOES NOT HOLD MEMORY.Mar 12, 1997 · N22347 · Bell 412 · Automatic Direction Finder (ADF) SystemSDR HEEA979173Transceiver · failedRADIO TRANSMITS BUT DOES NOT RECEIVE. TIME SINCE REPAIR 1:15.Mar 12, 1997 · N3893S · Bell 412 · VHF Communications SystemSDR HEEA979172Transceiver · weakRECEIVER WEAK.Mar 12, 1997 · N3911L · Bell 412 · VHF Communications SystemSDR HEEA979171Tarsyn · malfunctionD.G. WILL NOT BECOME VALID ON SST.Mar 12, 1997 · N3893S · Bell 412 · Autopilot SystemSDR 97ZZZX2757Afcu · tornDURING REPAIR OF AFCU, FOUND DIAPHRAGM TORN AND ABOUT TO RUPTURE.Mar 12, 1997 · N2071S · Bell 412 · Fuel Controlling System
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