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 AU970750Bearing · spalled(AUS) RH REDUCTION GEARBOX NR10 BEARING SPALLED ON BALLS AND INNER ANDOUTER RACES - LH REDUCTION GEARBOX NR10 BEARING HAD SLIGHT SPALLING ON THE INNER RACE AND DENTS ON THE BEARING SPLIT LINEEDGEApr 25, 1997 · Bell 412 · Turbine Engine Reduction GearSDR HAIHEEA9599Indicator · trips breakerATTITUDE INDICATOR POPS CIRCUIT BREAKER.Apr 24, 1997 · N2149S · Bell 412 · Attitude Gyro and Indicating SystemSDR HAIHEEA9596Engine · low powerENGINE LOW POWER AND TORQUE OSCILLATIONS.Apr 24, 1997 · N3893N · Bell 412 · Turbine SectionSDR HAIHEEA9586Elt · malfunctionELT TRANSMITTER ACTIVATES INTERMITTENTLY.Apr 24, 1997 · N7128R · Bell 412 · Emergency Locator BeaconSDR HAIHEEA9576Ejector Assy · crackedRT EJECTOR ASSY CRACKED MOUNT. EJECTOR CRACKED BEYOND LIMITS.Apr 24, 1997 · N22347 · Bell 412 · Engine Collector/Tailpipe/NozzleSDR HAIHEEA9568Spindle · bearing failedBEARING SEPARATED FROM SPINDLE.Apr 24, 1997 · N2261D · Bell 412 · Main Rotor HeadSDR HAIHEEA9567Spindle · bearing failedBEARING SEPARATED FROM SPINDLE.Apr 24, 1997 · N7128R · Bell 412 · Main Rotor HeadSDR HAIHEEA9560Transmitter · defectiveTRANSMITTER DRAWS EXCESSIVE CURRENT.Apr 24, 1997 · N3893P · Bell 412 · Directional Gyro and Indicating SystemSDR HAIHEEA9555Altimeter · reads lowALTIMETER READS 2000 FEET LOW. TIME SINCE REPAIR 8:30.Apr 24, 1997 · N7128R · Bell 412 · Altimeter, Barometric/EncoderSDR HAIHEEA9547Elt · corrodedCORROSION ON OUTER CASE.Apr 23, 1997 · N7128R · Bell 412 · Emergency Locator BeaconSDR HAIHEEA9545Ejector Assy · damagedEJECTOR ASSY DAMAGED BEYOND REPAIRS AT THIS STATION.Apr 23, 1997 · N3911L · Bell 412 · Engine Collector/Tailpipe/NozzleSDR HAIHEEA9538Gearbox · pressure fluxLOW AND FLUCTUATING OIL PRESSURE. SENT TO PRATT & WHITNEY FOR INSPECTION.Apr 23, 1997 · N3893N · Bell 412 · Turbine Engine Reduction GearSDR HAIHEEA9537Indicator · defectiveONE ELEMENT INOPERATIVE ON CENTER DIGIT OF FUEL GAUGE.Apr 23, 1997 · N107X · Bell 412 · Fuel Quantity IndicatorSDR HAIHEEA9536Engine · debondingCOATING COMING OFF POWER TURBINE SECTION WHERE IT MATES TO COMBINING GEARBOX, CAUSING LEAK BETWEEN ENGINE AND GEARBOX, OVERHAUL DUE. SENT TO PRATT & WHITNEY FORApr 23, 1997 · N3893N · Bell 412 · Turbine SectionSDR HAIHEEA9523Actuator Rotary · intermittentROTARY ACTUATOR INTERMITTENT OPERATION.Apr 23, 1997 · N3893P · Bell 412 · Main Rotor ControlSDR HAIHEEA9513Bleed Valve · failedBLEED VALVE WAS OVERHAULED 2-14-97 . BLEED VALVE CAUSED #2 ENGINE TO OSCILLATE BETWEEN 20 AND 40% TORQUE. REMOVED FROM A/C YV-0-CVG-11 AND ENGINE S/N CPPS62930, T.T. 3604.20. REMOVED BLEED VALVE AND FOUND UNSERVICEABLE AND REPLACED WITH SERVICEABLE BLEED VAApr 23, 1997 · Bell 412 · Compressor Bleed ValveSDR HAIHEEA9512Indicator · defectiveWHEN UNIT WAS FIRST CHECKED #1 NEEDLE AND #2 NEEDLE HAD 10% SPLIT THROUGHOUT SCALE. AFTER SEVERAL MINUTES OF OPERATION, THE SPLIT BETWEEN #1 AND #2 NEEDLE LESSENED TO 4% AND ONLY ABOVE 70% RPM. TIME SINCE REPAIR 100:10.Apr 23, 1997 · N3893P · Bell 412 · Engine RPM Indicating SystemSDR HAIHEEA9497Ejector Assy · crackedSIDE EJECTOR MOUNT FITTING INSTALLED TOO HIGH. AFT END OF DUCT TOO LARGE (11 1/2" TALL) SENT TO ALPINE AEROTECH LTD. FOR INSPECTION AND REPAIR.Apr 23, 1997 · N7128R · Bell 412 · Engine Collector/Tailpipe/NozzleSDR HAIHEEA9496Radar Rt · failedUNIT SHUTS DOWN AFTER TURNED ON. MODULATOR ASSEMBLY BAD.Apr 23, 1997 · N2261D · Bell 412 · Weather Radar SystemSDR HAIHEEA9495Radar Rt · failedUNIT SHUTS DOWN AFTER TURNED ON. MODULATOR ASSEMBLY BAD.Apr 23, 1997 · N2298Z · Bell 412 · Weather Radar SystemSDR HAIHEEA9489Altimeter · defectiveWILL NOT GO ABOVE 500 FEET UNTIL AT 2000 FEET.Apr 23, 1997 · N7128R · Bell 412 · Ground Proximity SystemSDR HAIHEEA9488Altimeter · errorsENCODER READS 0 FEET AT 500 FEET ALTITUDE. SENT TO ALLIED SIGNAL AVIONICS FOR WARRANTY REPAIR.Apr 23, 1997 · N2149S · Bell 412 · Altimeter, Barometric/EncoderSDR HAIHEEA9487Blade · errodedEROSION HOLES THROUGH THE OUTBOARD LEADING EDGE ABRASION STRIP.Apr 23, 1997 · N2148K · Bell 412 · Main Rotor BladesSDR HAIHEEA9486Ejector · crackedINSPECTED EJECTOR AND FOUND MOUNTING BRACKET CRACKED. REMOVED EXISTING SKIN AND FOUND CRACKED BEYOND LIMITS.Apr 23, 1997 · N2298Z · Bell 412 · Engine Collector/Tailpipe/NozzleSDR HAIHEEA9485Blade · separationBLADE HAS SKIN SEPARATION ON UPPER AND LOWER SURFACES STARTING AT STATION 172 AND ENDING AT STATION 196. SENT TO COMPOSITE TECHNICS FOR INSPECTION AND REPAIR.Apr 23, 1997 · N2258F · Bell 412 · Main Rotor BladesSDR HAIHEEA9484Spindle · bearing failedSPINDLE BEARINGS SEPARATED AND SHIMS EXPOSED.Apr 23, 1997 · N1202T · Bell 412 · Main Rotor HeadSDR HAIHEEA9483Spindle · corrodedSPINDLE BEARINGS SEPARATED AND METAL SHIMS EXPOSED.Apr 23, 1997 · N1202T · Bell 412 · Main Rotor HeadSDR HAIHEEA9482Spindle · corrodedSPINDLE REMOVED FROM SERVICE AS PER ASB412-88-37.Apr 23, 1997 · N1202T · Bell 412 · Main Rotor HeadSDR HAIHEEA9481Spindle · corrodedCORROSION ON PIN AREA UNDER PITCH HORN.Apr 23, 1997 · N1202T · Bell 412 · Main Rotor HeadSDR HAIHEEA9480Transceiver · faultyTRANSCEIVER WILL NOT TRANSMIT.Apr 23, 1997 · N2258F · Bell 412 · VHF Communications SystemSDR HAIHEEA9471Gearbox · clutch slipGEARBOX CLUTCH MISENGAGEMENT WITHOUT AUDIBLE OR PHYSICAL (HELICOPTER JOLT) INDICATIONS. DURING START IT SLIPPED AT 20% N1 ENGAGED AT 30% N1 MOMENTARILY SLIPPED AT 50% N1.Apr 23, 1997 · N107X · Bell 412 · Turbine Engine Reduction GearSDR HAIHEEA9470Engineon · malfunction#1 ENGINE HIGH ITT.Apr 23, 1997 · N33008 · Bell 412 · Engine (Turbine/Turboprop)SDR HAIHEEA9469Combining Grbox · making metalCONTAMINATION ON GEARBOX CHIP PLUG AND FILTER.Apr 23, 1997 · N22608 · Bell 412 · Turbine Engine Reduction GearSDR HAIHEEA9468Combining Grbox · making metalCOMBINING GEARBOX MAKING METAL - SIGNIFICANT FERROUS.Apr 23, 1997 · N2298Z · Bell 412 · Turbine Engine Reduction GearSDR HAIHEEA9467Engine · making metalENG POWER SECTION MAKING METAL ON BOTH CHIP PLUGS.Apr 23, 1997 · N2261D · Bell 412 · Turbine Engine Reduction GearSDR HAIHEEA9463Altimeter · intermittentALTIMETER INTERMITTENT. TIME SINCE REPAIR 441:00.Apr 23, 1997 · N5759N · Bell 412 · Ground Proximity SystemSDR HAIHEEA9459Transceiver · inoperativeINOPERATIVE; UNIT DOES NOT TRANSMIT.Apr 23, 1997 · N3893P · Bell 412 · VHF Communications SystemSDR HAIHEEA9438Brake Assy · defectiveBRAKE ASSY DEFECTIVE, COULD NOT ROTATE ARM.Apr 19, 1997 · N3911L · Bell 412 · Main Rotor BrakeSDR HAIHEEA9437Brake Assy · defectiveBRAKE ASSY RATCHETY AND BINDING.Apr 19, 1997 · N107X · Bell 412 · Main Rotor BrakeSDR HAIHEEA9434Indicator · precessesADI PRECESSES.Apr 19, 1997 · N23023 · Bell 412 · Attitude Gyro and Indicating SystemSDR HAIHEEA9433Indicator · inoperativeATTITUDE INDICATOR INOPERATIVE AND HELI PILOT WILL NOT COME ON LINE. UNIT FAILED GYRO VALID TEST ON SST.Apr 19, 1997 · N3893S · Bell 412 · Attitude Gyro and Indicating SystemSDR HAIHEEA9431Indicator · failedATTITUDE INDICATOR STAYS IN 45 DEGREE R/H TURN.Apr 19, 1997 · N7128R · Bell 412 · Attitude Gyro and Indicating SystemSDR HAIHEEA9404Relay · inoperativeRELAY IS INOPERATIVE. SENT TO BELL HELICOPTER TEXTRON FOR INSPECTION AND REPAIR.Apr 16, 1997 · N2148K · Bell 412 · DC Power Distribution SystemSDR HAIHEEA9402Duct Assy · crackedCRACKED BOTTOM SIDE EXIT EDGE.Apr 16, 1997 · N3893N · Bell 412 · Engine Collector/Tailpipe/NozzleSDR HAIHEEA9401Brake Assy · failedBRAKE WON'T LOCK.Apr 16, 1997 · N22347 · Bell 412 · Rotorcraft Flight ControlSDR HAIHEEA9400Controller · failedAIR DISTRIBUTION SERVO CONTROLLER INTERMITTENT AND STOPS BROKEN.Apr 16, 1997 · N2148K · Bell 412 · Air Distribution SystemSDR HAIHEEA9399Valve · failedSPRING VALVE WILL NOT SHUT.Apr 16, 1997 · N33008 · Bell 412 · Engine Oil Shutoff ValveSDR HAIHEEA9397Indicator · sticksROTOR AND #1 NEEDLES STICK EXCESSIVELY AND #2 NEEDLE INDICATES HIGH OUT OF TOLERANCE AT 100% RPM.Apr 16, 1997 · N3893N · Bell 412 · Engine RPM Indicating SystemSDR HAIHEEA9395Control · defective#2 VHF CONTROL HEAD HAS SEVERAL DIGITAL LIGHTS OUT.Apr 16, 1997 · N1202T · Bell 412 · VHF Communications SystemSDR HAIHEEA9394Control · malfunctionNUMBER STORED IN MEMORY WILL NOT COME UP. SENT TO COLLINS AVIONICS FOR EXCHANGE.Apr 16, 1997 · N1202T · Bell 412 · DME/TACAN System
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