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 HEEA084733Interphone · weakAUDIO FADES IN AND OUT. FOUND R72 VOLUME POT BAD, FACEPLATE UNREADABLE AND SELECTOR KNOB CRACKED. REPLACED. REPAIRED. BENCH CHECK GOOD.Feb 17, 2003 · N107X · Bell 412 · Interphone/Passenger Announcement (PA) SystemSDR HEEA084732Switch · looseNR 2 COMM SWITCH IS LOOSE. FOUND LIGHT PANEL AND SELECTOR KNOB BAD, SWITCH S1 NOISY AND SWITCH S2 LOOSE. CLEANED SWITCH S1, TIGHTENED SWITCH S2, REPLACED SELECTOR KNOB AND LIGHT PANEL. REPAIRED. BENCH CHECK GOOD.Feb 17, 2003 · N2148K · Bell 412 · Interphone/Passenger Announcement (PA) SystemSDR HEEA084731Mixer Box · malfunctionedMIXER BOX HAS BLEED OVER. REPLACED BAD S1 SELECTOR SWITCH AND KNOB AND ALSO BAD FACEPLATE. REPAIRED. BENCH CHECK GOOD.Feb 17, 2003 · N1202T · Bell 412 · Interphone/Passenger Announcement (PA) SystemSDR HEEA084730Mixer Box · failedICS MIXER BOX HAS NO SOUND. FOUND ICS AUDIO INTERMITTENTLY CUTTING OUT. CLEANED REAR CONNECTOR AND S1 SWITCHES. RESOLDERED WIRES TO CIRCUIT BOARD AND R72 VOLUME CONTROL. REPAIRED. BENCH CHECK GOOD.Feb 17, 2003 · N1202T · Bell 412 · Interphone/Passenger Announcement (PA) SystemSDR HEEA084729Transmitter · fluctuatesOIL PRESSURE FLUCTUATION. REPAIRED.Feb 17, 2003 · N2148K · Bell 412 · Engine Oil PressureSDR HEEA084728Skid Shoe · wornMLG SKID SHOE IS WORN. REPAIRED.Feb 17, 2003 · N6559Z · Bell 412 · Wheel/Ski/FloatSDR HEEA084727Skid Shoe · wornMLG SKID SHOE WORN. REPAIRED.Feb 17, 2003 · N2148K · Bell 412 · Wheel/Ski/FloatSDR HEEA084726Skid Shoe · wornMLG SKID SHOE WORN. REPAIRED.Feb 17, 2003 · N1202T · Bell 412 · Wheel/Ski/FloatSDR HEEA084725Skid · gougedGOUGED NEAR AFT CROSSTUBE SADDLE AND HAS CORROSION IN VARIOUS PLACES.Feb 17, 2003 · N22347 · Bell 412 · Wheel/Ski/FloatSDR HEEA084724Siren · inoperativeINTERNAL PA INOPERATIVE.Feb 17, 2003 · N2261D · Bell 412 · Interphone/Passenger Announcement (PA) SystemSDR HEEA084723Switch · brokenPA SIREN POWER SWITCH BROKEN. FUSE F101 BAD. REPLACED POWER SWITCH AND FUSE. REPAIRED. BENCH CHECK GOOD.Feb 17, 2003 · N2261D · Bell 412 · Interphone/Passenger Announcement (PA) SystemSDR HEEA084722Siren · malfunctionedAFTER OPERATING FOR 15 MINUTES, SYSTEM QUITS WORKING, AFTER UNIT COOLS DOWN IT WILL WORK AGAIN.Feb 17, 2003 · N3893P · Bell 412 · Interphone/Passenger Announcement (PA) SystemSDR HEEA084721Cvr · malfunctionedCVR TEST STAYS ON CONSTANTLY.Feb 17, 2003 · N1202T · Bell 412 · Audio/Video MonitoringSDR HEEA084720Brake Assy · wornMAIN ROTOR BRAKE HAS WORN PUCKS. REPAIRED.Feb 17, 2003 · N142PH · Bell 412 · Main Rotor BrakeSDR HEEA084719Brake Assy · wornMAIN ROTOR BRAKE HAS WORN PUCKS. REPAIRED.Feb 17, 2003 · N6559Z · Bell 412 · Main Rotor BrakeSDR HEEA084718Brake Assy · wornMAIN ROTOR BRAKE HAS WORN PUCKS. REPAIRED.Feb 17, 2003 · N5759N · Bell 412 · Main Rotor BrakeSDR HEEA084717Brake Assy · wornMAIN ROTOR BRAKE WORN, SLOW STOPPING UPON APPLICATION OF BRAKE. FOUND LININGS WORN. REPLACED LININGS. TESTED GOOD.Feb 17, 2003 · N1202T · Bell 412 · Main Rotor BrakeSDR HEEA084716Control Unit · intermittentINTERMITTENTLY LOCKS UP AND WILL NOT CHANGE FREQUENCIES. REPLACED DEFECTIVE TRANSFER SWITCH, DEFECTIVE PHOTOCELL AND FADED LENS. REPAIRED. BENCH CHECK GOOD.Feb 17, 2003 · N2148K · Bell 412 · Visual Omnirange (VOR) SystemSDR HEEA084713Control Box · damagedADF CONTROL BOX DAMAGED, CAN'T CHANGE FREQUENCY. FOUND DISPLAY DS302, PHOTOCELL V301, PHOTOCELL LENS BAD AND SWITCH SPOOL NOT PROPERLY ALIGNED WITH SWITCH S304. REPLACED DISPLAY, PHOTOCELL, PHOTOCELL LENS AND ALIGNED SWITCH. REPAIRED. BENCH CHECK GOOD.Feb 17, 2003 · N142PH · Bell 412 · Automatic Direction Finder (ADF) SystemSDR HEEA084712Servo · contaminatedIN CRUISE FLIGHT, PILOT NOTED HIGH FREQUENCY VIBRATION IN TAIL ROTOR PEDALS AND UNCOMMANDED MOVEMENT IN T/R PEDALS. FOUND MOISTURE IN TAIL ROTOR SERVO PILOT VALVE AREA AND PILOT VALVE BOLTS STIFF TO ROTATE. DRIED AREA AND FREED BOLTS. TEMPERATURE DURING FLIGFeb 17, 2003 · N412SM · Bell 412 · Tail Rotor Control SystemSDR HEEA0029620Valve · leakingVALVE, LEAKING. REPLACED WITH SERVICEABLE PART.Feb 16, 2003 · N2149S · Bell 412 · Engine Oil Distribution (Airframe Furnished)SDR HEEA084646Transponder · inoperativeTRANSPONDER INOPERATIVE. FOUND HEADER P305, TRANSISTOR Q206, DISPLAY DS103 AND PHOTOCELL V101 BAD. ALSO FOUND CARBON UNDER P305 BETWEEN PINS 12 AND 13. REPLACED HEADER, TRANSISTOR, DISPLAY AND PHOTOCELL AND REMOVED CARBON. REPAIRED. BENCH CHECK GOOD.Feb 14, 2003 · N22347 · Bell 412 · ATC Transponder SystemSDR HEEA084645Amplifier · corrodedNR 2 KDA CONNECTOR FROZE ON BOX. FOUND UNIT EXCESSIVELY CORRODED. CLEANED CORROSION AND REPLACED 18 HEADER PINS DUE TO CORROSION. BENCH CHECK GOOD.Feb 14, 2003 · N2258F · Bell 412 · Visual Omnirange (VOR) SystemSDR HEEA084643Receiver · damagedVOR STAYS INVALID. REPAIRED BROKEN FOIL ON NAV RECEIVER BOARD. BENCH CHECK GOOD.Feb 14, 2003 · N107X · Bell 412 · Visual Omnirange (VOR) SystemSDR HEEA084642Receiver · inoperativeVHF NAVIGATION RECEIVER INOPERATIVE. POWER SUPPLY VOLTAGES ARE BAD. REPLACED BURNED RESISTORS R791, R792, R793 AND R794. ALSO REPLACED IC I101, TRANSISTOR Q718, Q719 AND Q103. REPAIRED PROBLEM. BENCH CHECK GOOD.Feb 14, 2003 · N107X · Bell 412 · Visual Omnirange (VOR) SystemSDR HEEA084641Transponder · inoperativeTRANSPONDER WILL NOT COME ON. LOWER CHASSIS CORRODED. CLEANED CORROSION FROM UNIT. REPLACED Q104, Q501, Q502 TRANSISTORS, REPLACED 3 EACH WASHERS AND 3 EACH INSULATORS. BENCH CHECK GOOD.Feb 14, 2003 · N22608 · Bell 412 · ATC Transponder SystemSDR HEEA084640Transponder · inoperativeTRANSPONDER INOPERATIVE. CLEANED CORROSION FROM UNIT. REPLACED THE INSULATORS AND SPACER ON Q501 TRANSISTOR WHICH WERE DETERIORATED. FOUND MTL AND FREQUENCY OUT OF SPECS. ADJUSTED. BENCH CHECK GOOD.Feb 14, 2003 · N2149S · Bell 412 · ATC Transponder SystemSDR HEEA084639Transponder · weakTRANSPONDER WEAK AND INTERMITTENT REPORTING. SENT TO HONEYWELL, IN. FOR INSPECTION AND REPAIR.Feb 14, 2003 · N2258F · Bell 412 · ATC Transponder SystemSDR HEEA084638Transponder · intermittentTRANSPONDER OUTPUT IS INTERMITTENT. FOUND CORROSION ON Q104, Q501 AND Q502 (ALL TRANSISTORS) AND CHASSIS. CLEANED CORROSION, REPAIRED. BENCH CHECK GOOD.Feb 14, 2003 · N107X · Bell 412 · ATC Transponder SystemSDR HEEA084637Transponder · erraticTRANSPONDER OUTPUT IS ERRATIC ON TEST SET (DIGITS). CLEANED EXCESSIVE CORROSION FROM UNIT. MTL2 TRANSMIT POWER WEAK. ALIGNED RECEIVER AND TRANSMITTER. BENCH CHECK GOOD.Feb 14, 2003 · N107X · Bell 412 · ATC Transponder SystemSDR HEEA084636Transponder · malfunctionedTRANSPONDER CAUSES TCAS TO DISPLAY ITSELF (NO SUPPRESSION PULSE). CLEANED CORROSION FROM UNIT. REPLACED WASHER AND 3 INSULATORS. BENCH CHECK GOOD.Feb 14, 2003 · N2149S · Bell 412 · ATC Transponder SystemSDR HEEA084635Indicator · malfunctionedDISPLAY TOO DIM. REPLACED V901 PHOTOCELL, REPAIRED. CLEANED BOARDS AND CONNECTORS. BENCH CHECK GOOD.Feb 14, 2003 · N142PH · Bell 412 · DME/TACAN SystemSDR HEEA084632Indicator · inoperativeDISPLAY IS INOPERATIVE. REPLACED PHOTOCELL, LENS, DISPLAY AND C909 CAPACITOR. REPAIRED. BENCH CHECK GOOD.Feb 14, 2003 · N5759N · Bell 412 · DME/TACAN SystemSDR HEEA084631Indicator · failedDISPLAY UNREADABLE. REPLACED DISPLAY CONNECTOR. REPAIRED. BENCH CHECK GOOD.Feb 14, 2003 · N2149S · Bell 412 · DME/TACAN SystemSDR HEEA084630Transceiver · inoperativeADF TRANSCEIVER INOPERATIVE NO AUDIO. FOUND UNIT -15 VOLTS MISSING. FOUND POWER SUPPLY TRANSISTOR Q105, IC I101 AND RESISTOR R104 ALL BAD. REPLACED PARTS. REPAIRED. BENCH CHECK GOOD.Feb 14, 2003 · N5759N · Bell 412 · Automatic Direction Finder (ADF) SystemSDR HEEA084629Transceiver · noisyADF TRANSCEIVER HAS CONTINUOUS NOISE IN BACKGROUND. REPAIRED.Feb 14, 2003 · N22608 · Bell 412 · Automatic Direction Finder (ADF) SystemSDR HEEA084628Transceiver · weakADF TRANSCEIVER WEAK AND UNRELIABLE. REPAIRED.Feb 14, 2003 · N22608 · Bell 412 · Automatic Direction Finder (ADF) SystemSDR HEEA084627Transceiver · malfunctionedADF TRANSCEIVER DOES NOT RECEIVE. REPAIRED.Feb 14, 2003 · N3893N · Bell 412 · Automatic Direction Finder (ADF) SystemSDR HEEA084626Receiver · failedRECEIVER FAILED OUTER MARKER LIGHT INOPERATIVE. CLEANED EXCESSIVE CORROSION. BENCH CHECK GOOD.Feb 14, 2003 · N2298Z · Bell 412 · Marker Beacon SystemSDR HEEA084625Receiver · malfunctionedRECEIVER CAUSES MARKER BEACON CIRCUIT BREAKER TO OPEN. REMOVED CORROSION FROM CIRCUIT BOARDS. REPAIRED BURNT FOIL ON POWER SUPPLY BOARD. FOUND UNIT DRAWING EXCESSIVE CURRENT. REPLACED BAD FLEX CABLE AND BAD C209 CAPACITOR. REPAIRED PROBLEM. ADJUSTED HIGH Feb 14, 2003 · N3893P · Bell 412 · Marker Beacon SystemSDR HEEA084624Transceiver · damagedVHF TRANSCEIVER RF CONNECTOR LOOSE. TIGHTENED CONNECTOR AND RESOLDERED LOOSE WIRE ON CONNECTOR. REPAIRED. REMOVED CORROSION FROM CHASSIS. REPLACED BAD TRANSISTOR INSULATORS ON Q108, Q109 AND Q110 TRANSISTORS. REPLACED BAD Q110 TRANSISTOR SOCKET, REPAIRED. Feb 14, 2003 · N2149S · Bell 412 · VHF Communications SystemSDR HEEA084623Transceiver · damagedVHF TRANSCEIVER BNC CONNECTOR PULLED OUT. REPLACED BROKEN J9082 RF CONNECTOR. REPAIRED PROBLEM. ALSO REPLACED BAD Q102 TRANSISTOR INSULATOR. ADJUSTED CARRIER SQUELCH, MIC GAIN, TRANSMIT COMPRESSOR AND SIDETONE. BENCH CHECK GOOD.Feb 14, 2003 · N22347 · Bell 412 · VHF Communications SystemSDR HEEA084622Control Unit · malfunctionedAIR COLLISION AVOIDANCE SYSTEM SHOWS RS232 NR 2 FAIL - ERROR CODE 13 AT STARTUP. TO BE SENT TO VENDOR FOR REPAIR.Feb 14, 2003 · N1202T · Bell 412 · Air Collision Avoidance SystemSDR HEEA084621Transceiver · failedVHF TRANCEIVER WILL NOT TRANSMIT. REPLACED BAD Q109 AND Q110 TRANSISTORS. REPAIRED PROBLEM. ALIGNED TRANSMITTER AND ADJUSTED C/N SQUELCH AND CARRIER SQUELCH. REPLACED BAD RF CONNECTOR. REMOVED CORROSION FROM CHASSIS. BENCH CHECK GOOD.Feb 14, 2003 · N2149S · Bell 412 · VHF Communications SystemSDR HEEA084614Transceiver · malfunctionedVHF TRANSCEIVER HAS SCRATCHY SIDETONE. REPLACED Q109 AND Q110 TRANSISTORS AND Q110 TRANSISTOR SOCKET. REPAIRED. ALIGNED TRANSMITTER AND ADJUSTED CARRIER SQUELCH. REMOVED LIGHT CORROSION FROM UNIT. BENCH CHECK GOOD.Feb 14, 2003 · N142PH · Bell 412 · VHF Communications SystemSDR HEEA084613Transceiver · malfunctionedVHF TRANSCEIVER BREAKS SQUELCH, POSSIBLE WATER DAMAGE. FOUND NO SIGNS OF WATER DAMAGE. FOUND RECEIVER AND TRANSMITTER WEAK AT 118 MHZ. ALIGNED RECEIVER. REPAIRED. REPLACED C531 CAPACITOR AND Q504 TRANSISTOR. REPAIRED. BENCH CHECK GOOD.Feb 14, 2003 · N2149S · Bell 412 · VHF Communications SystemSDR HEEA084612Transceiver · inoperativeTRANSCEIVER INOPERATIVE. REPLACED BAD I309 IC CHIP. REPAIRED. ADJUSTED C/N SQUELCH, CARRIER SQUELCH, MIC GAIN, TRANSMIT COMPRESSOR AND SIDETONE. BENCH CHECK GOOD.Feb 14, 2003 · N22608 · Bell 412 · VHF Communications SystemSDR HEEA084611Transceiver · inoperativeTRANSCEIVER WILL NOT TRANSMIT. REMOVED CORROSION FROM UNDER VCO SHIELD AND APPLIED HUMISEAL TO AREA FOR CORROSION CONTROL. ALSO REMOVED CORROSION FROM CHASSIS. REPLACED 2 BAD FLEX CABLES ON SERIAL BOARD. ADJUSTED CARRIER SQUELCH, TRANSMIT COMPRESSOR AND SIDFeb 14, 2003 · N2298Z · Bell 412 · VHF Communications SystemSDR HEEA084610Transceiver · weakTRANSCEIVER WEAK. REMOVED CORROSION FROM CHASSIS. ADJUSTED VCO VOLTAGE AND ALIGNED RECEIVER. REPAIRED WEAK RECEIVER. ADJUSTED MIC GAIN, TRANSMIT COMPRESSOR, POWER OUTBACK AND SIDETONE. BENCH CHECK GOOD.Feb 14, 2003 · N22608 · Bell 412 · VHF Communications SystemSDR HEEA084609Pump · leakingFUEL PUMP SEAL LEAKING AT AFCU. POLISHED GEAR SET AND RETESTED UNIT. UNIT TESTED SATISFACTORY.Feb 14, 2003 · N142PH · Bell 412 · Engine Fuel Pump
Back to Bell 412