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 HEEA966959Indicator · failedOIL TEMP WOULD NOT INDICATE.Apr 8, 1996 · N2298Z · Bell 412 · Engine Oil TemperatureSDR HEEA966955Valve · leakingVALVE LEAKING FUEL AFTER SHUTDOWN.Apr 8, 1996 · N2149S · Bell 412 · Fuel Transfer ValveSDR HEEA966951Altimeter · erraticENCODER HAS ERRATIC OUTPUT. SENT TO B.F. GOODRICH AEROSPACE FOR WARRANTY REPAIR. TIME SINCE REPAIR0:00.Apr 8, 1996 · N21498 · Bell 412 · Altimeter, Barometric/EncoderSDR HEEA966949Motor Assy · weakACTUATOR IS VERY SLOW. INSPECTED BY ACCESSORY SHOP AND FOUND MOTOR IS WEAK, SLOW AND NOISY.Apr 8, 1996 · Bell 412 · Entrance StairsSDR HEEA966948Altimeter · erraticALTIMETER ERRATIC IN FLIGHT.Apr 8, 1996 · N108X · Bell 412 · Altimeter, Barometric/EncoderSDR HEEA966942Indicator · defective#2 ENG. N2 NEEDLE STAYS BELOW #1 ENG AND ROTOR NEEDLES. SENT TO B.F. GOODRICH AEROSPACE FOR INSPECTION AND REPAIR.Apr 8, 1996 · N33008 · Bell 412 · Engine RPM Indicating SystemSDR HEEA966937Indicator · precessingPRECESSING IN PITCH AND ROLL. SENT TO TIME SINCE REPAIR 58:30.Apr 8, 1996 · N107X · Bell 412 · Attitude Gyro and Indicating SystemSDR HEEA966924Control · defectiveSELECTOR KNOB ROTATES 350 DEGREES. REPLACED SELECTOR KNOB P/N 073-0548-05. REPAIRED. TESTED UNIT AND CHECKED LIGHTING. BENCH CHECK GOOD.Apr 4, 1996 · N2148K · Bell 412 · Automatic Direction Finder (ADF) SystemSDR HEEA966912Cvr · defectiveCVR PINGER MOUNT NUT PLATES MISSING.Apr 2, 1996 · N21498 · Bell 412 · Audio/Video MonitoringSDR HEEA966908Control Box · defectiveCONTROL BOX SEGMENTS OUT ON DISPLAY.Apr 2, 1996 · N2148K · Bell 412 · Dependent Position Determining SystemSDR HEEA966902Indicator · defectiveINDICATOR HAS HORIZONTAL LINES AND BLUE SCREEN, ALSO FOUND LOW VOLTAGE POWER SUPPLY BAD. REPLACED TRANSISTOR (Q4). REPAIRED POWER SUPPLY. UNIT STILL HAS BLUE SCREEN.Apr 2, 1996 · N3893P · Bell 412 · Weather Radar SystemSDR HEEA966900Control Unit · defectiveTEST IS INTERMITTENT. REPLACED SWITCH S101 P/N 133-0135-00. REPAIRED. CLEANED UNIT AND TOUCHED UP FACEPLATE. BENCH CHECK GOOD.Apr 2, 1996 · N108X · Bell 412 · Visual Omnirange (VOR) SystemSDR HEEA9668957000 Cdu · defectiveLORAN LED INOPERATIVE.Apr 2, 1996 · N3893P · Bell 412 · Long-Range Navigation (LORAN) SystemSDR HEEA966893Indicator · defectiveTRIPLE TACH NEEDLE SPLIT. TIME SINCE REPAIR 6:35.Apr 2, 1996 · N33008 · Bell 412 · Engine RPM Indicating SystemSDR HEEA966891Control Display · defectiveLIGHTS TOO DIM. REPLACED PHOTOCELL V101 P/N 134-5005-02. REPAIRED. CLEANED AND TESTED UNIT. TOUCHED UP FACEPLATE. BENCH CHECK GOOD.Apr 2, 1996 · N22347 · Bell 412 · ATC Transponder SystemSDR HEEA966887Crosstube · brokenCROSSTUBE BROKEN AT R/H SIDE OF THE CENTER SUPPORT BEAM ASSEMBLY CLAMP.Mar 29, 1996 · N3911L · Bell 412 · Main Landing Gear Strut/Axle/TruckSDR 96ZZZX1977Coupling · pittedINSPECTION FOUND COUPLING TEETH PITTED. REPLACED WITH NEW COUPLING.Mar 25, 1996 · N92115 · Bell 412 · Tail Rotor Drive ShaftSDR 96ZZZX1976Coupling · pittedINSPECTION FOUND COUPLING TEETH PITTED. REPLACED WITH NEW COUPLING.Mar 25, 1996 · N92115 · Bell 412 · Tail Rotor Drive ShaftSDR 96ZZZX1975Coupling · pittedINSPECTION FOUND COUPLING TEETH PITTED. REPLACED WITH NEW COUPLING.Mar 25, 1996 · N92115 · Bell 412 · Tail Rotor Drive ShaftSDR 96ZZZX1974Boot · debondedINSPECTION FOUND BOOT DEBONDED. REPLACED WITH NEW BOOT.Mar 25, 1996 · N92115 · Bell 412 · Tail Rotor Drive ShaftSDR 96ZZZX1593Cross Tube · failedAIRCRAFT PARKED ON RAMP WHEN AFT CROSS TUBE FAILED ON RT SIDE OF CENTER SUPPORT BEAM ASSEMBLY CLAMP. THE AIRCRAFT IMPACTED THE GROUND RUPTURING RIGHT EXTERNAL STC FUEL CELL.Mar 25, 1996 · N3911L · Bell 412 · Main Landing Gear Strut/Axle/TruckSDR HEEA966883Radar Rt · defectiveFOUND RT UNIT TO BE INTERMITTENT, UNIT CUTS OFF DURING OPERATION. FOUND BROKEN WIRE ON CONNECTOR J5001. RESOLDERED WIRE. DID NOT CURE PROBLEM, UNIT STILL INTERMITTENT.Mar 22, 1996 · N3911L · Bell 412 · Weather Radar SystemSDR HEEA966879Receiver · intermittentINTERMITTENT OPERATION ON FLIGHT LINE.Mar 22, 1996 · N107X · Bell 412 · Visual Omnirange (VOR) SystemSDR HEEA966878Indicator · defectiveINDICATOR UNREADABLE.Mar 22, 1996 · N3893N · Bell 412 · DME/TACAN SystemSDR HEEA966875Control · defectiveVOLUME CONTROL IS NOT LINEAR AND DISPLAY FLASHES ON AND OFF. COULD NOT DUPLICATE PROBLEM. TESTED UNIT AND FOUND TRANSFER SWITCH BAD. REPLACED SWITCH S102 P/N 031-0399-01. REPAIRED. ALSO PERFORMED HEADER MOD. REPLACED HEADER P201 P/N 030-2368-16. TOUCHED Mar 22, 1996 · N108X · Bell 412 · VHF Communications SystemSDR HEEA966873Blade · defectiveREMOVE EXCESS WEIGHT AND PAINT AND REFINISH BLADES AND SEAL THE EDGE OF THE INBOARD TRIM TAB ON BLADE S/N A94.Mar 22, 1996 · N107X · Bell 412 · Main Rotor BladesSDR HEEA966872Blade · defectiveREMOVE EXCESS WEIGHT AND PAINT AND REFINISH BLADES AND SEAL THE EDGE OF THE INBOARD TRIM TAB ON BLADE S/N A94.Mar 22, 1996 · N107X · Bell 412 · Main Rotor BladesSDR HEEA966857Mast Assy · corrodedCORROSION BEYOND LIMITS IN BORE IN AREA "T". REPLACED MAST ASSEMBLY.Mar 13, 1996 · N3893N · Bell 412 · Main Rotor Mast/SwashplateSDR HEEA966852Loran · defectiveLOCKS UP AND DISPLAYS WARNING CODES.Mar 13, 1996 · N22608 · Bell 412 · Long-Range Navigation (LORAN) SystemSDR HEEA966851Loran · defectiveSEVERAL LED'S ARE INOPERATIVE.Mar 13, 1996 · N22608 · Bell 412 · Long-Range Navigation (LORAN) SystemSDR HEEA966850Altimeter · errorREADS LOWER THAN ACTUAL ALTITUDE AND ERRATIC. FOUND PRECISION EQUIPMENT VOLTAGE TO EITHER DOUBLE OR HALF WHEN AMPLITUDE IS CHANGED. FOUND PROBLEM TO BE ON CAL/LOOP BOARD. REPLACED INTEGRATED CIRCUITS I501,I502,I503,I504,I505,I507,I508, TRANSISTORS Q501 THROUMar 13, 1996 · N21498 · Bell 412 · Ground Proximity SystemSDR HEEA966849R/T Unit · defectiveNO NOISE BAND IN TEST, ALSO FOUND RECEIVER SENSITIVITY VERY WEAK.Mar 13, 1996 · N2149S · Bell 412 · Weather Radar SystemSDR HEEA966842Altimeter · defectiveBENCH CHECK REQUIRED. FOUND PH LIGHT DOES NOT DIM. REPLACED PHOTOCELL V101. REPAIRED. PERFORMED COMPLETE CALIBRATION AND ALIGNMENT. BENCH CHECK GOOD.Mar 8, 1996 · N21498 · Bell 412 · Ground Proximity SystemSDR HEEA966841Altimeter · fluctuatesIN FLIGHT 200 FEET NEEDLE FLUCTUATES. INSTALLED MOD 10 AS PER SERVICE BULLETIN KING KRA-405-10. PERFORMED COMPLETE CALIBRATION AND ALIGNMENT. BENCH CHECK GOOD.Mar 8, 1996 · N21498 · Bell 412 · Ground Proximity SystemSDR HEEA966840Altimeter · fluctuatesNEEDLE FLUCTUATES. REPLACED RESISTOR R518,R519,R534 AND R260 TO INCORPORATE MOD 10 AS PER KING SERVICE BULLETIN KRA-405-10. BENCH CHECK GOOD.Mar 8, 1996 · N2149S · Bell 412 · Ground Proximity SystemSDR ERAA96210Bearing · excess playBEARING HAS EXCESSIVE RADIAL & AXIAL PLAY.Mar 8, 1996 · N167EH · Bell 412 · Main Rotor Mast/SwashplateSDR ERAA96209Lower Cone Seat · pittedLOWER CONE SEAT THAT WAS OVERHAULED WITH ZERO T.S.O. REC'D IN WITH PITTING AROUND DRIVE PIN HOLES.Mar 6, 1996 · Bell 412 · Main Rotor HeadSDR HEEA966822Bearing · defectiveBEARING SHIELD ROTATING.Mar 4, 1996 · N3893P · Bell 412 · Tail Rotor Drive ShaftSDR 96ZZZX1342Gyro · defectiveATTITUDE GYRO DEFECTIVE. REPLACED WITH NEW FIXTURE.Mar 4, 1996 · N32936 · Bell 412 · Attitude Gyro and Indicating SystemSDR HEEA966804Antenna · defectiveLORAN SLOW TO ACQUIRE STATIONS AND GIVE READOUTS.Feb 28, 1996 · N22608 · Bell 412 · Long-Range Navigation (LORAN) SystemSDR HEEA966790Valve · inoperativeVALVE INOPERATIVE. WILL NOT ACTUATE.Feb 28, 1996 · N2261D · Bell 412 · Fuel Transfer ValveSDR HEEA966784Fuel Control · defective10% TORQUE SPLIT WITH #1 HIGH AT 90% TORQUE. DURING TROUBLESHOOTING, IDLE SHIFTED TO 74% N1 AND THROTTLE WOULD SELF ADVANCE.Feb 28, 1996 · N22347 · Bell 412 · Fuel Control/Turbine EnginesSDR HEEA966781Valve · defectiveVALVE WILL NOT OPEN, OVERHEATS AND POPS CIRCUIT BREAKER.Feb 28, 1996 · N107X · Bell 412 · Air Distribution SystemSDR HEEA966768Indicator · stuckINDICATOR STUCK AT 15 DEGREES IN ROLL.Feb 28, 1996 · N7128R · Bell 412 · Attitude Gyro and Indicating SystemSDR HEEA966764Ejector Assy · defectiveRT EJECTOR DRAIN FITTING BROKEN.Feb 28, 1996 · N2261D · Bell 412 · Engine Collector/Tailpipe/NozzleSDR HEEA966762Altimeter · erraticERRATIC FROM 500 FEET AND UPWARDS.Feb 28, 1996 · N108X · Bell 412 · Ground Proximity SystemSDR HEEA966758Gearbox · making metalMETAL GENERATION FROM #1 POWER SECTION COMBINING GR BOX.Feb 28, 1996 · N2261D · Bell 412 · Turbine Engine Reduction GearSDR HEEA966746Loran · defectiveADVISORY LIGHT STAYS ON AT ALL TIMES.Feb 28, 1996 · N22608 · Bell 412 · Long-Range Navigation (LORAN) SystemSDR ERAA96201Indicator · defectiveNO TEXTFeb 26, 1996 · N177EH · Bell 412 · Main Rotor GearboxSDR 96ZZZX1389Indicator · wire chafedPILOTS ATTITUDE INDICATOR STARTED SPINNING, SMOKE DETECTED IN COCKPIT. FOUND PILOTS ATTITUDE INDICATOR ISOLATION AMP FAILED AND SOURCE OF SMOKE. FOUND WIRING AT ATTITUDE INDICATOR HAD CHAFED ON DEFOGGER MOUNTING BOLT SHORTING AMP SIGNAL TO GROUND AND CAUSINGFeb 23, 1996 · N412DE · Bell 412 · Attitude Gyro and Indicating System
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