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 HEEA080549Battery Pack · dischargedMAIN AIRCRAFT BATTERY PACK WEAK.Jul 29, 2002 · N7128R · Bell 412 · Battery/Charger SystemSDR HEEA080548Indicator · reads lowALL NEEDLES ON TRIPLE TACH READ 200 LOW.Jul 29, 2002 · N6559Z · Bell 412 · Engine RPM Indicating SystemSDR HEEA080547Indicator · fluctuatesFLUCTUATES ABOUT 50 POUNDS. REPLACED WITH SERVICEABLE PART.Jul 29, 2002 · N3893N · Bell 412 · Fuel Quantity IndicatorSDR HEEA080546Switch · malfunctionedWHEN SELECTING RIGHT POSITION GAUGE WILL NOT ALWAYS RETURN TO THE PREVIOUS GAUGE READING. IT MAY BE 100 LBS. LESS THEN IT MAY BE 50 LBS. LESS. SOMETIMES IT WILL SLOWLY CREEP BACK TO THE PREVIOUS FUEL INDICATION. IT CAUSES THE GAUGE TO READ 300 LBS. LOW. SENJul 29, 2002 · N5759N · Bell 412 · Fuel Quantity IndicatorSDR HEEA080545Switch · reads lowREADS LOWER THAN IS ACTUALLY IN FUEL TANKS WHEN TESTING LEFT OR RIGHT.Jul 29, 2002 · N5759N · Bell 412 · Fuel Indicating SystemSDR HEEA080544Fuel Control · damagedLEAKING AT DOME WEEP HOLE. SPLIT UNIT AND INSPECTED TORQUE TUBE BORE. FOUND TORQUE TUBE BORE COATING FLAKING OFF. SENT MAIN BODY TO VENDOR FOR REPAIR. REASSEMBLED UNIT AFTER REPAIR AND FOUND NO LEAKING. UNIT TESTED SATISFACTORY.Jul 29, 2002 · N2148K · Bell 412 · Fuel Controlling SystemSDR HEEA080543Servo Valve · leakingCAUSES TORQUE SPLITS AND ERRATIC CONTROL. ENGINES SURGING. FOUND SERVO VALVES LEAKING. REPLACED SERVO VALVES AND SERVO VALVE LEVERS. UNIT TESTED SATISFACTORY.Jul 29, 2002 · N2148K · Bell 412 · Fuel Control/Turbine EnginesSDR HEEA080542Servo Valve · leakingENGINE SURGE. FOUND SERVO VALVES LEAKING. PERFORMED 2500 HOUR INSPECTION. POLISHED SERVO VALVES AND RE-CALIBRATED UNIT. TESTED SATISFACTORY.Jul 29, 2002 · N6559Z · Bell 412 · Fuel Control/Turbine EnginesSDR HEEA080541Servo Valve · leakingLARGE TORQUE OSCILLATION. FOUND SERVO VALVES AND LEVER LEAKING AIR. CLEANED VALVES AND LEVER, RESET UNIT AND TESTED SATISFACTORY.Jul 29, 2002 · N3893N · Bell 412 · Fuel Control/Turbine EnginesSDR HEEA080540Control Unit · oscillatesBOTH ENGINES OSCILLATING TOGETHER 3 TO 4 PERCENT. REPLACED WITH SERVICEABLE PART.Jul 29, 2002 · N2148K · Bell 412 · Fuel Control/Turbine EnginesSDR HEEA080539Servo Valve · leakingTORQUE SPLIT. TESTED UNIT AND FOUND SERVO VALVES LEAKING. REPLACED SERVO VALVE AND SERVO LEVER WITH REWORKED PART. UNIT TESTED SATISFACTORY.Jul 29, 2002 · N2148K · Bell 412 · Fuel Control/Turbine EnginesSDR HEEA080538Arm · bindingFLIGHT CONTROL ARM BINDING AND CANNOT SET. SCRAPPED AND REPLACED WITH SERVICEABLE PART.Jul 29, 2002 · N3893L · Bell 412 · Rotorcraft Flight ControlSDR HEEA080537Tach Generator · failedTACH GENERATOR FAILED TO FUNCTION. REPLACED WITH SERVICEABLE PART.Jul 29, 2002 · N6559Z · Bell 412 · Engine RPM Indicating SystemSDR HEEA080534Filter · dirtyCOMBINING GEARGOX FILTER DIRTY. REPLACED WITH SERVICEABLE FILTER.Jul 29, 2002 · N1202T · Bell 412 · Engine/Transmission CouplingSDR HEEA080533Filter · contaminatedWHITE GLUE LIKE SUBSTANCE IN FILTER. SCRAPPED AND REPLACED WITH SERVICEABLE PART.Jul 29, 2002 · N3893L · Bell 412 · Engine/Transmission CouplingSDR HEEA080531Element · damagedCAUSING BYPASS TO POP. SCRAPPED AND REPLACED WITH SERVICEABLE PART.Jul 29, 2002 · N2148K · Bell 412 · Engine/Transmission CouplingSDR HEEA080530Element · damagedCAUSED C-BOX FILTER TO BYPASS. SCRAPPED AND REPLACED WITH SERVICEABLE PART.Jul 29, 2002 · N1202T · Bell 412 · Engine/Transmission CouplingSDR HEEA080529Filter · damagedP3 FILTER HAS A BENT BYPASS SPRING. REPLACED WITH SERVICEABLE PART.Jul 29, 2002 · N2148K · Bell 412 · Engine Oil Distribution (Airframe Furnished)SDR HEEA080528Compensator · failedTRIM COMPENSATOR GIVES NO ITT INDICATION.Jul 29, 2002 · N2149S · Bell 412 · Engine EGT/TIT Indicating SystemSDR HEEA080527Compensator · inaccurateTRIM COMPENSATOR GIVING INACCURATE READING.Jul 29, 2002 · N2149S · Bell 412 · Engine EGT/TIT Indicating SystemSDR HEEA080526Compensator · damagedENGINE TRIM COMPENSATOR WILL NOT ADJUST.Jul 29, 2002 · N2148K · Bell 412 · Engine EGT/TIT Indicating SystemSDR HEEA080525Compensator · damagedADJUSTMENT PIN LOOSE IN HOUSING.Jul 29, 2002 · N2148K · Bell 412 · Engine EGT/TIT Indicating SystemSDR HEEA080524Compensator · fluctuatesITT FLUCTUATING. SENT TO SEMCO INSTRUMENT COMPANY FOR INSPECTION AND REPAIR.Jul 29, 2002 · N2149S · Bell 412 · Engine EGT/TIT Indicating SystemSDR HEEA080522Tube · damagedAIR PRESSURE TUBE IS DAMAGED AT FLARE. SCRAPPED.Jul 29, 2002 · N2149S · Bell 412 · Engine Air Intake SystemSDR HEEA080521Fireseal · crackedENGINE FIRESEAL CRACKED. REPLACED WITH SERVICEABLE PART.Jul 29, 2002 · N6559Z · Bell 412 · Engine FiresealsSDR HEEA080519Battery · dischargedMAIN BATTERY WEAK. WON'T CHARGE. REPLACED WITH SERVICEABLE BATTERY.Jul 29, 2002 · N5759N · Bell 412 · Battery/Charger SystemSDR HEEA080518Battery · dischargedMAIN BATTERY DEAD. REPLACED WITH SERVICEABLE BATTERY.Jul 29, 2002 · N107X · Bell 412 · Battery/Charger SystemSDR HEEA080517Oil Cap · stickingOIL FILLER CAP DIFFICULT TO REMOVE. SCRAPPED.Jul 29, 2002 · N5759N · Bell 412 · Engine Oil Storage (Airframe Furnished)SDR HEEA080512Bleed Valve · malfunctionedBLEED VALVE PRODUCING OSCILLATION IN HOVER.Jul 29, 2002 · N2148K · Bell 412 · Compressor Bleed ValveSDR HEEA080511Bleed Valve · malfunctionedBLEED VALVE PRODUCING CONSTANT TORQUE SURGES IN FLIGHT.Jul 29, 2002 · N2148K · Bell 412 · Compressor Bleed ValveSDR HEEA080510Bleed Valve · malfunctionedBLEED VALVE PRODUCING ENGINE SURGE.Jul 29, 2002 · N2148K · Bell 412 · Compressor Bleed ValveSDR HEEA080509Bleed Valve · failedBLEED VALVE PRODUCING HIGH ITT (100 DEGREES HIGHER) AND ENGINE N1 FLUCTUATIONS.Jul 29, 2002 · N2258F · Bell 412 · Compressor Bleed ValveSDR HEEA080508Bleed Valve · oscillatesBLEED VALVE DELIVERS ENGINE OSCILLATIONS.Jul 29, 2002 · N3893N · Bell 412 · Compressor Bleed ValveSDR HEEA080507Bleed Valve · oscillatesBLEED VALVE HAS INTERMITTENT OSCILLATION.Jul 29, 2002 · N6559Z · Bell 412 · Compressor Bleed ValveSDR CA020724014Nut · loose(CAN) ON REMOVAL OF MAST LOWER MAST BEARING RETENSION NUT FOUND WITH NO TORQUE. BEARING RACE NOT SEATED.Jul 23, 2002 · Bell 412 · Main Rotor Mast/SwashplateSDR CA020724013Bearing · spalled(CAN) MAST REMOVED FOR TRANSMISSION CHIP INDICATIONS. BEARING FOUND SPALLED ON REMOVAL.Jul 23, 2002 · Bell 412 · Main Rotor Mast/SwashplateSDR ERAA080477Mast · making metalMAKING METAL. MAST BEARING BREAKING DOWN. REMOVED MAST BEARING VISUALLY INSPECTED, EXPOSED COMPONENTS. INSTALLED SWITCH, BEARING, NEW SEAL AND SLEEVE, REASSEMBLED. MAST ASSY REPAIRED IAW BHT 412 CR&O 63. COMPLIED WITH TB 412-98-150Jul 17, 2002 · N418EH · Bell 412 · Main Rotor Mast/SwashplateSDR ERAA080469Indicator · contaminatedINOPERABLE; UNIT WOULD NOT POWER UP. FOUND MAJOR WATER DAMAGE. ACTION TAKEN: REPLACED ALL BAD PARTS, REM'D CORROSION, REPAIRED BROKEN WIRES, RE-SOLDERED COLD SOLDER JOINTS, ALIGNED AND TESTED. NSJul 15, 2002 · N418EH · Bell 412 · Weather Radar SystemSDR ERAA080468Indicator · contaminatedUNIT DROPS OFF LINE, SLOW TO COME ON. WATER DAMAGE, BAD LOW VOLTAGE, VIDEO SWEEP; DATA PROCESSING ON CONTROL LOGIC CARTS. ACTION TAKEN: REMOVED CORROSION, REPLACED BAD COMPONENTS ON ALL BAD CARDS, ALIGNED AND TESTED.Jul 15, 2002 · N419EH · Bell 412 · Weather Radar SystemSDR HEEA080438Connector · dirtyCOMBINING BOX OIL PRESSURE FLUCTUATING. FOUND CONNECTOR PLUG AT OIL PRESSURE TRANSMITTER DIRTY AND THE COMBINING BOX VEN PLUG. CLEANED PLUG AND VENT.Jul 8, 2002 · N22347 · Bell 412 · Engine/Transmission CouplingSDR AUS20020706Heater · leaking(AUS) FUEL/OIL HEATER LEAKING OIL FROM WELD LINE ON MAIN BODY.Jul 1, 2002 · Bell 412 · Fuel HeaterSDR AUS20020663Tach Generator · faulty(AUS) TACHOMETER GENERATOR FAILED.Jun 28, 2002 · Bell 412 · Engine RPM Indicating SystemSDR HEEA080290Blade · damagedTHE TWO LOWER FRETTING PADS ARE SEPARATED. TO BE SENT TO VENDOR FOR REPAIR.Jun 27, 2002 · N2298Z · Bell 412 · Main Rotor BladesSDR HEEA080289Blade · damagedOUTBOARD ABRASION STRIP HAS SEVERAL HOLES. TO BE SENT TO VENDOR FOR REPAIR.Jun 27, 2002 · N22347 · Bell 412 · Main Rotor BladesSDR HEEA080158Bushing · wornBEARINGS AND BUSHINGS WORN. REPAIRED.Jun 26, 2002 · N3893N · Bell 412 · Tail Rotor Control SystemSDR HEEA080154Float · leakingEMERGENCY FLOAT BAG LEAKING.Jun 26, 2002 · N3893N · Bell 412 · Emergency Flotation SectionSDR HEEA080153Brake Assy · wornBRAKE ASSY PUCKS WORN. REPLACED WITH SERVICEABLE PART.Jun 26, 2002 · N6559Z · Bell 412 · Main Rotor BrakeSDR HEEA080152Control Unit · failedGENERATOR WENT OFF LINE AND WON'T RESET.Jun 26, 2002 · N1202T · Bell 412 · AC Generation SystemSDR HEEA080151Gyro · malfunctionedTAKES A LOT OFF AMPS TO TEST. REPLACED WITH SERVICEABLE PART.Jun 26, 2002 · N2149S · Bell 412 · Attitude Gyro and Indicating SystemSDR HEEA080150Signal Cond Unit · malfunctionedNR 1 FUEL TRANSFER LIGHT COMING ON IN FLIGHT.Jun 26, 2002 · N2149S · Bell 412 · Fuel Indicating System
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