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 HEEA968180Control · intermittentINTERMITTENT AND HALF OF DISPLAY NOT USUABLE. PERFORMED PRELIMINARY INSPECTION, FOUND PHOTOCELL (V301) DIMMING. REPLACED PHOTOCELL (V301), ALSO FOUND LIGHTING INOPERATIVE. REPLACED 28V BULB. REPAIRED. BENCH CHECK GOOD.Oct 10, 1996 · N107X · Bell 412 · Automatic Direction Finder (ADF) SystemSDR 96ZZZX5729Yoke · req replacementCOMPLY WITH ASB412-96-89 INSPECTION OF T/R YOKE. YOKE REPLACED.Oct 9, 1996 · Bell 412 · Tail Rotor HeadSDR HEEA968135Bearing · looseBEARING UNSTAKED. PART SCRAPPED LOCALLY.Oct 4, 1996 · N108X · Bell 412 · Main Rotor HeadSDR HEEA968134Bearing · looseBEARING UNSTAKED. PART SCRAPPED LOCALLY.Oct 4, 1996 · N108X · Bell 412 · Main Rotor HeadSDR HEEA968105Antenna · defectiveLORAN ANTENNA CAUSING SYSTEM TO BE INTERMITTENT.Oct 4, 1996 · N2261D · Bell 412 · Long-Range Navigation (LORAN) SystemSDR HEEA968101Indicator · sticksNEEDLE ON DC SIDE INTERMITTENTLY STICKS. TIME SINCE REPAIR 186:45.Oct 3, 1996 · N2261D · Bell 412 · DC Indicating SystemSDR HEEA968100Transmitter · faultyREPORTED C/BOX PRESSURE RUNS AT MINIMUM GREEN (MFG DATE 6-96)Oct 3, 1996 · N3893N · Bell 412 · Engine Oil PressureSDR HEEA968097Receiver · malfunctionCUTS IN AND OUT FREQUENCY AND CHANGES FREQUENTLY TO 808. WHEN UNIT IS VIBRATED, AUDIO CUTS OUT. FOUND VCO COVER BENT IN AND TAPPING ON COVER CUTS AUDIO OUT. REMOVED COVER AND STRAIGHTENED OUT. REPAIRED. VIBRATED AND COULD NOT GET AUDIO OUT AGAIN. FOUND BFOct 3, 1996 · N7128R · Bell 412 · Automatic Direction Finder (ADF) SystemSDR HEEA968096Control Box · defectiveFREQUENCY CHANGE BUTTOM STICKS. REPLACED S301 TRANSFER SWITCH P/N 031-0399-01. REPAIRED. BENCH CHECK GOOD.Oct 3, 1996 · N107X · Bell 412 · Dependent Position Determining SystemSDR HEEA9680917000 Rcu · failedWON'T RECEIVE STATIONS.Oct 3, 1996 · N3893P · Bell 412 · Long-Range Navigation (LORAN) SystemSDR HEEA968088Indicator · defectiveFOUND CYCLIC BUTTON ON FRONT PANEL NOT LIGHTING.Oct 3, 1996 · N3893N · Bell 412 · Weather Radar SystemSDR HEEA968076Tarsyn Gyro · precessesCOPILOTS GYRO COMPASS PRECESSES. TIME SINCE REPAIR 839:15.Oct 3, 1996 · N3893P · Bell 412 · Autopilot SystemSDR HEEA968073Case Assy · corrodedCORROSION ON LUG OF IDLER CLEVIS ALL AROUND BOLT HOLE ON O.D. OF CLEVIS. REPLACED WITH SERVICEABLE PART.Oct 3, 1996 · N21498 · Bell 412 · Tail Rotor GearboxSDR HEEA968072Sleeve Assy · corrodedSLEEVE ASSY IS CORRODED. (FOUND EXCESSIVE CORROSION SLEEVE IN AREA "A") REPLACED WITH SERVICEABLE PART.Oct 3, 1996 · N21498 · Bell 412 · Tail Rotor GearboxSDR HEEA968070Shaft · corrodedSHAFT IS CORRODED. (CORROSION IN BASE OF SPLINES AND BEHIND LAST SET OF SPLINES) REPLACED WITH SERVICEABLE PART.Oct 3, 1996 · N2298Z · Bell 412 · Tail Rotor GearboxSDR HEEA968069Gear Box · corrodedGR BOX IS CORRODED. (CLEVIS ON CASE HAS CORROSION COMPLETELY AROUND BOLT HOLE. REPLACED WITH SERVICEABLE PART.Oct 3, 1996 · N2298Z · Bell 412 · Tail Rotor GearboxSDR HEEA968060Cvr · inoperativeCVR INOPERATIVE.Oct 3, 1996 · N108X · Bell 412 · Audio/Video MonitoringSDR HEEA968052Blade · dentedBLADE IS DENTED. (FOUND .040 DENT ON LEADING EDGE.Oct 3, 1996 · Bell 412 · Tail Rotor BladesSDR HEEA968035Extinguisher · dischargedDISCHARGED. SENT TO HRD AERO SYSTEMS FOR OVERHAUL.Oct 3, 1996 · N2261D · Bell 412 · Fire Bottle, FixedSDR HEEA968026Spindle · unbondedBEARING UNBONDED.Oct 3, 1996 · N3893P · Bell 412 · Main Rotor HeadSDR HEEA968025Engine · failedCOMPRESSOR FAILURE CAUSING MAJOR ENGINE DAMAGE.Oct 3, 1996 · N3911L · Bell 412 · Turbine Engine Compressor SectionSDR HEEA968024Engine · rumbleWHEN ENGINE IS HOT, THERE IS A RUBBING SOUND IN ENGINE. RUMBLE SOUND WITH HIGH FREQUENCY WHEN RUNNING.Oct 3, 1996 · N3893S · Bell 412 · Turbine SectionSDR HEEA968023Indication · fluctuationPRESSURE FLUCTUATION.Oct 3, 1996 · N2261D · Bell 412 · Fuel Pressure IndicatorSDR HEEA968021Indicator · failedNO TEMP INDICATION.Oct 3, 1996 · N7128R · Bell 412 · Engine Oil TemperatureSDR HEEA968018Indicator · defectiveINDICATOR IS CAUSING NUMBER 1 TORQUE CIRCUIT BREAKER TO POP.Oct 3, 1996 · N3893S · Bell 412 · Engine BMEP/Torque IndicatingSDR HEEA968017Indicator · defectiveTORQUE METER #2 WILL NOT GO BELOW 35%.Oct 3, 1996 · N107X · Bell 412 · Engine BMEP/Torque IndicatingSDR HEEA967998Inverter · malfunctionFUEL QUANTITY FLUCTUATES. TIME SINCE REPAIR 214:55.Oct 2, 1996 · N22608 · Bell 412 · AC InverterSDR CZMA061343Baffle · defectiveCREDIT FOR REPLACEMENT PART REPLACED PART WITH NEW FROM BHT.Sep 19, 1996 · N911BE · Bell 412 · Main Rotor HeadSDR HEEA967803Indicator · defective#2 NEEDLE WILL NOT GO TO ZERO AND #1 NEEDLE INDICATES LOW.TIME SINCE REPAIR 108:20.Sep 9, 1996 · N3893P · Bell 412 · Engine RPM Indicating SystemSDR HEEA967802Blade · crackedBLADE IS CRACKED. (BLADE HAS A CRACK IN THE OUTBOARD LEADING EDGE ABRASION STRIP AT STATION 185" COMPLETE CHORDWISE.Sep 9, 1996 · N22347 · Bell 412 · Main Rotor BladesSDR HEEA967793Receiver · inoperative#1 VOR DOES NOT RECEIVE USABLE SIGNAL INOPERATIVE.Sep 9, 1996 · N108X · Bell 412 · Visual Omnirange (VOR) SystemSDR ERAA96305D.C. Controller · failed#1 GENERATOR INOP WITH THIS REGULATOR INSTALLED. CHANGED REGULATOR AND GENERATOR WORKED FINE. UNIT WAS PURCHASED AS EXCHANGE AND ONLY HAD 4 HRS ON IT.Sep 5, 1996 · N422EH · Bell 412 · DC RegulatorSDR ERAA96304Armature · failed tir inspUNIT REPAIRED AND HAS NOT BEEN INST'D ON A/C SINCE RETURNING FROM REPAIR. FAILED T.I.R. INSPECTION AND DRAGS ON STATOR.Sep 5, 1996 · N414EH · Bell 412 · Starter-GeneratorSDR HEEA967763Loran · defective1 1/2 MILES OFF; SIGNAL WEAK AND BUTTONS ARE INTERMITTENT.Sep 3, 1996 · N108X · Bell 412 · Long-Range Navigation (LORAN) SystemSDR HEEA967761Control · knob defectiveHF CONTROL ON/OFF KNOB COMES OFF. SENT TO ALLIED SIGNAL AVIONICS FOR INSPECTION AND REPAIR.Sep 3, 1996 · N293CA · Bell 412 · HF Communications SystemSDR HEEA967760Transceiver · defectiveRX WEAK AND TRANSMITTER INOPERATIVE. SENT TO ALLIED SIGNAL AVIONICS FOR INSPECTION AND REPAIR.Sep 3, 1996 · N107X · Bell 412 · DME/TACAN SystemSDR HEEA967754Case Asy · port missingT/R GEARBOX REMOVED DUE TO METAL IN OIL. FOUND OUTPUT DUPLEX BEARING P/N 212-040-456-001, S/N J6885, T.T. 1669:25 SPALLED. LUBRICATION PORT TO FEED BEARING NOT PRESENT IN ABOVE MENTIONED CASE ASSEMBLY CAUSING BEARING FAILURE. REPAIRED GEARBOX WITH NEW PART.Sep 3, 1996 · N3893P · Bell 412 · Tail Rotor GearboxSDR HEEA9677497000 Rcu · inoperativeUNIT WENT OFF LINE. LOST ALL LIGHTS ON CDU.Sep 3, 1996 · N22608 · Bell 412 · Long-Range Navigation (LORAN) SystemSDR HEEA9677487000 Cdu · failedUNIT WENT OFF LINE. LOST ALL LIGHTS ON CDU AND PUSHBUTTON SWITCHES UNREADABLE.Sep 3, 1996 · N22608 · Bell 412 · Long-Range Navigation (LORAN) SystemSDR HEEA967742Transceiver · inoperativeRECEIVER INOPERATIVE. SENT TO ALLIED SIGNAL AVIONICS FOR INSPECTION AND REPAIR.Sep 3, 1996 · N2261D · Bell 412 · VHF Communications SystemSDR HEEA967741Control Box · failedDOES NOT CHANNEL FREQUENCIES CORRECTLY AND KNOBS CHANGE WRONG DIGITS INTERMITTENTLY. VERIFIED, CLEANED WAFERS AND CONTACTS. NO HELP. REPLACED SWITCH S304 AND RIVETS 2 EACH P/N 092-5009-04. ALSO REPLACED RETAINING RING P/N 090-0036-04. NO HELP. REPLACED DESep 3, 1996 · N108X · Bell 412 · Dependent Position Determining SystemSDR HEEA967740Transponder · intermittentTRANSPONDER INTERMITTENTLY INOPERATIVE.Sep 3, 1996 · N22608 · Bell 412 · ATC Transponder SystemSDR HEEA967739Transceiver · defectiveVHF BREAKS SQUELCH WITH NO SIGNAL. ADJUSTED SQUELCH. REPAIRED. REPLACED HEADER J304 AND APPLIED HUMISEAL TO HEADER FOR CORROSION CONTROL. INSTALLED MOD 2 AS PER KING SERVICE BULLETIN KTR908-2. ADJUSTED MOD., POWER OUT AND SIDETONE. BENCH CHECK GOOD.Sep 3, 1996 · N108X · Bell 412 · VHF Communications SystemSDR HEEA967732Control Unit · malfunctionSQUELCH IS CONSTANTLY DISABLED (BY VIBRATION OR SIGNAL RECEPTION)Aug 30, 1996 · N108X · Bell 412 · VHF Communications SystemSDR HEEA967731Control · malfunction#2 VOR SWITCHES BETWEEN FREQUENCIES ON IT'S OWN. COULD NOT DUPLICATE PROBLEM, BUT FOUND PHOTOCELL (V101) NOT DIMMING. REPLACED V101 PHOTOCELL. REPAIRED. BENCH CHECK GOOD.Aug 30, 1996 · N107X · Bell 412 · Visual Omnirange (VOR) SystemSDR HEEA967730Altimeter · failedRADAR ALTIMETER DOES NOT TEST OR INDICATE ALTITUDE. FOUND STRIPLINE ASSY TO BE BAD CAUSING RESISTOR R708 ON OSCILLATOR CIRCUIT REGULATOR ASSY TO BURN. ALSO FOUND WHEN UNIT IS VIBRATED, NEEDLE FLUCTUATES. FOUND CAL/LOOP BOARD TO BE BAD.Aug 30, 1996 · N2261D · Bell 412 · Ground Proximity SystemSDR HEEA967729Receiver · malfunctionRECEIVER INOPERATIVE. WEAK RECEIVE IN ANTENNA MODE.Aug 30, 1996 · N2258F · Bell 412 · Automatic Direction Finder (ADF) SystemSDR HEEA967728Altimeter · wont testWILL NOT TEST CORRECTLY. REPLACED CAL/LOOP BOARD. REPAIRED. INSTALLED MOD 10 AS PER KING SERVICE BULLETIN KRA405-10. ADJUSTED 500 FOOT TRIP. BENCH CHECK GOOD.Aug 30, 1996 · N2148K · Bell 412 · Ground Proximity SystemSDR HEEA967726Transceiver · failedNO DISPLAY ON #1 OR #2 DME.Aug 30, 1996 · N22347 · Bell 412 · DME/TACAN SystemSDR HEEA967724Transceiver · weakRECEIVE WEAK.Aug 30, 1996 · N3893N · Bell 412 · VHF Communications System
Back to Bell 412