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 HEEA954746Ejector · crackedEJECTOR UNIT CRACKED.Apr 10, 1995 · N33008 · Bell 412 · Engine Collector/Tailpipe/NozzleSDR HEEA954742Indicator · defectiveHORIZONTAL POINTER WILL NOT GO FULL SCALE.Apr 10, 1995 · N2298Z · Bell 412 · Attitude Gyro and Indicating SystemSDR HEEA954739Computer · fails testFAILS TEST #15.2 ON SST; NO POWER OUTPUT.Apr 10, 1995 · N3893S · Bell 412 · Autopilot ComputerSDR HEEA954734Indicator · stuckHUNDREDS AND TENS ON COURSE SELECT STUCK.Apr 10, 1995 · N2298Z · Bell 412 · Integrated Flight SystemSDR HEEA954733Computer · fails testFAILED SAS ENGAGE LOGIC TEST 3.2 ON SST.Apr 10, 1995 · N22347 · Bell 412 · Autopilot ComputerSDR HEEA954731Tarsyn 333 · fails testVG HAS NOISY BEARING AND FAILS 6.7 TEST ON SST.Apr 10, 1995 · N2149S · Bell 412 · Autopilot SystemSDR HEEA954716Cvr · wont testCVR DOESN'T TEST CORRECTLY.Apr 7, 1995 · N3893P · Bell 412 · Audio/Video MonitoringSDR HEEA954715Indicator · defectiveINDICATOR COURSE DIGITAL OFF.Apr 7, 1995 · N2148K · Bell 412 · Integrated Flight SystemSDR HEEA954706Cvr · defectiveCVR TEST LIGHT COMES ON IN FLIGHT.Apr 7, 1995 · N2148K · Bell 412 · Audio/Video MonitoringSDR 95ZZZX2201Servo · defectiveRIGHT TAIL ROTOR PEDAL MOTORED INTERMITTENTLY. INSPECTED SYSTEM, CHECKED RIG. REPLACED SERVO. IPC 67-19-22.Apr 6, 1995 · N2298Z · Bell 412 · Rotorcraft Servo SystemSDR HEEA954684Fitting · crackedFITING CRACKED AT CENTER INBOARD EDGE AT RIVET HOLE OF ADEL WITH NO EDGE DISTANCE. REMOVED AND REPLACED FITTING AND SHIMS AS NEEDED. SUBMITTER SUGGESTS SHIM PROPERLY, ALLOW FOR PROPER EDGE DISTANCE, AND DEBURR ALL HOLES.Apr 5, 1995 · N22608 · Bell 412 · Fuselage Miscellaneous StructureSDR HEEA954679Longeron · corrodedLONGERON HAS DEEP CORROSION AT STATION 101.38 SPLICE AS SEEN IN UPPER R/H AFT CORNER OF BAGGAGE COMPARTMENT, JUST OUTBOARD OF WHERE THE BAGGAGE COMPARTMENT CEILING PANEL ATTACHES TO LONGERON. REPLACED WITH SERVICEABLE LONGERON ASSY AND RETURNED TO SERVICE.Apr 5, 1995 · N21498 · Bell 412 · Fuselage Main, Longeron/StringerSDR 95ZZZX2138Switch · defectiveIN THE TEST MODE OF THE CAUTION PANEL, NONE OF THE CAUTION LIGHTS ILLUMINATE EXCEPT FOR THE CAUTION PANEL LIGHT. WHEN AN ACTUAL MALFUNCTION EXISTS. GET LIGHT AND A MASTER CAUTION LIGHT. EVERYTHING WORKS NORMALLY EXCEPT FOR THE PRESS-TO-TEST-MODE. SUSPECT CAApr 1, 1995 · N4UV · Bell 412 · Central WarningSDR 95ZZZX2137Switch · defectiveIN THE TEST MODE OF THE CAUTION PANEL, NONE OF THE CAUTION LIGHTS ILLUMINATE EXCEPT FOR THE CAUTION PANEL LIGHT. WHEN AN ACTUAL MALFUNCTION EXISTS. GET LIGHT AND A MASTER CAUTION LIGHT. EVERYTHING WORKS NORMALLY EXCEPT FOR THE PRESS-TO-TEST-MODE. SUSPECT CAApr 1, 1995 · N4UV · Bell 412 · Central WarningSDR 95ZZZX2136Switch · defectiveIN THE TEST MODE OF THE CAUTION PANEL, NONE OF THE CAUTION LIGHTS ILLUMINATE EXCEPT FOR THE CAUTION PANEL LIGHT. WHEN AN ACTUAL MALFUNCTION EXISTS GET LIGHT A ND A MASTER CAUTION LIGHT. EVERYTHING WORKS NORMALLY EXCEPT FOR THE PRESS-TO-TEST-MODE. SUSPECT CAApr 1, 1995 · N4UV · Bell 412 · Central WarningSDR 95ZZZX2135Switch · defectiveIN THE TEST MODE OF THE CAUTION PANEL, NONE OF THE CAUTION LIGHTS ILLUMINATE EXCEPT FOR THE CAUTION PANEL LIGHT. WHEN AN ACTUAL MALFUNCTION EXISTS. GET LIGHT AND A MASTER CAUTION LIGHT. EVERYTHING WORKS NORMALLY EXCEPT FOR THE PRESS-TO-TEST-MODE. SUSPECT CAApr 1, 1995 · N4UV · Bell 412 · Central WarningSDR HEEA954666Damper Set · defectiveDAMPER SET CAUSING LEAD/LAG PROBLEMS. RADS READINGS SENT FOR YOUR CONVENIENCE OF TESTING. SEE MMIR # 4665 FOR ADDITIONAL DAMPER SETS REMOVED. S/N LK2922 & LK2914Mar 31, 1995 · N22347 · Bell 412 · Main Rotor HeadSDR HEEA954665Damper Set · defectiveDAMPER SET CAUSING LEAD/LAG PROBLEMS. SEE MMIR # 4666 FOR ADDITIONAL DAMPER SETS REMOVED. S/N LK2881 & LK2880Mar 31, 1995 · N22347 · Bell 412 · Main Rotor HeadSDR 95ZZZX2205Transducer · defectivePEDALS WOULD NOT RESPOND TO NORMAL INPUT. FOUND YAW CHANNEL CONTROL MOTION TRANSDUCER STICKING. CLEANED AND LUBED. FIGURE 67-15, ITEM 45.Mar 30, 1995 · N22608 · Bell 412 · Tail Rotor Control SystemSDR HEEA954647Governor Shaft · bindingFREE TURBINE GOV THROTTLE SHAFT BINDING.Mar 28, 1995 · N3911L · Bell 412 · Turbine GovernorSDR HEEA954641Bolt · coat flakeCARBIDE COATING FLAKING BEYOND LIMITS. BOLT S/N A81, A599, A566.Mar 28, 1995 · N22347 · Bell 412 · Main Rotor HeadSDR HEEA954640Cone · damagedLOWER CONE TEFLON DAMAGED.Mar 28, 1995 · N22347 · Bell 412 · Main Rotor HeadSDR 95ZZZX1927Panel · separationDURING MAJOR INSPECTION, FOUND PANEL OF BAGGAGE COMPARTMENT ROOF SEPARATED BEYOND LIMITS. STA 101 (AFT SEAM ON PANEL) IS A HIGHLY STRESSED AREA. SINCE THE ADDITION OF OUTSIDE DOUBLERS (ASB 412-90-49) THIS SEEMS TO BE A MORE COMMON PROBLEM.Mar 27, 1995 · N396AL · Bell 412 · Fuselage Miscellaneous StructureSDR 95ZZZX1851Boost Pump · failedDURING CRUISE FLIGHT NR 2, ENGINE FUEL BOOST PUMP PRESSURE FLUCTUATED AND THEN PRESSURE WENT TO ZERO. REPLACED BOOST PUMP. CAUSE UNKNOWN.Mar 27, 1995 · N397AL · Bell 412 · Fuel Boost PumpSDR HEEA954629Indicator · erraticNEEDLE HAS A ERRATIC OPERATION. TIME SINCE REPAIR 51:30.Mar 23, 1995 · N2261D · Bell 412 · Rate of Climb IndicatorSDR HEEA954619Motor Assy · failedWILL NOT RETRACT. VISUALLY INSPECTED AND BENCH CHECKED BY THE ACCESSORY SHOP AND FOUND UNIT INOPERATIVE. REMOVED MOTOR FROM UNIT. DEAD SPOT ON ARMATURE.Mar 23, 1995 · N22347 · Bell 412 · Entrance StairsSDR HEEA954615Transciever · defectiveBREAKS SQUELCH AND WILL NOT RE-SQUELCH. INSPECTED AND FOUND HEAVY CORROSION THROUGH MAIN BOARD NEAR CONNECTOR J5981. FOUND MAIN BOARD TO BE UNREPAIRABLE. REPLACED MAIN BOARD AND 2 EACH INSULATORS. ADJUSTED POWER OUT, SIDETONE, MODULATION, AND TRANSMIT COMPMar 23, 1995 · N7128R · Bell 412 · VHF Communications SystemSDR HEEA954614Battery · overheat lightBATTERY HOT LIGHT IN FLIGHT. REPLACED WITH SERVICEABLE BATTERY.Mar 23, 1995 · N7128R · Bell 412 · Battery/Charger SystemSDR HEEA954610Connector · shorted#2 ENGINE CHIP LIGHT IN FLIGHT. FOUND PINS IN CONNECTOR SHORTED. REPLACED CONNECTOR AND RETURNED TO SERVICE.Mar 23, 1995 · N22608 · Bell 412 · Turbine Engine Reduction GearSDR HEEA954608Transmission · chip warnTRANSMISSION CHIP LIGHT OUTBOUND. RETURNED TO BASE. CHIP LIGHT CAME FROM PLANETARY GEAR RING. CLEANED, PENALTY RUN OK AND RETURNED TO SERVICE.Mar 23, 1995 · N33008 · Bell 412 · Main Rotor GearboxSDR HEEA954598Shaft · rustedHEAT TEMP INDICATORS COMING UNBONDED AND RUSTING UNDERNEATH. REPLACED WITH SERVICEABLE MAIN DRIVE SHAFT.Mar 23, 1995 · N2258F · Bell 412 · Main Rotor Drive SystemSDR HEEA954589Control Unit · damagedBROKEN FACE PLATE AND INTERMITTENT THUMBWHEEL, ALSO UNIT GIVES ERRONEOUS TONE FREQUENCIES.Mar 23, 1995 · N23023 · Bell 412 · VHF Communications SystemSDR HEEA954588Indicator · inoperativeDISPLAY INOPERATIVE.Mar 23, 1995 · N2298Z · Bell 412 · DME/TACAN SystemSDR HEEA954587Cvr · inoperativeCVR WILL NOT START.Mar 23, 1995 · N2149S · Bell 412 · Audio/Video MonitoringSDR HEEA954586Loran · defectivePARTIAL LIGHT SEGMENT IN DISPLAY.Mar 23, 1995 · N22608 · Bell 412 · Long-Range Navigation (LORAN) SystemSDR HEEA954582Valve · inoperativeVALVE INOPERATIVE.Mar 23, 1995 · N2261D · Bell 412 · Fuel Transfer ValveSDR HEEA954580Indicator · defectiveHEADING CARD WILL NOT MOVE. TIME SINCE REPAIR 2:55.Mar 23, 1995 · N6559Z · Bell 412 · Integrated Flight SystemSDR HEEA954578Indicator · trips breaker#2 SIDE POPS CIRCUIT BREAKER.Mar 23, 1995 · N22608 · Bell 412 · Engine BMEP/Torque IndicatingSDR HEEA954569Transmitter · low outputLOW OUTPUT - READS 15 PSI LOW ON GAUGE.Mar 22, 1995 · N23023 · Bell 412 · Engine Oil PressureSDR ERAA9536Bearing · wornBEARINGS ARE WORN BEYOND LIMITS AND UNABLE TO TRACK.Mar 20, 1995 · N414EH · Bell 412 · Main Rotor HeadSDR HEEA954549Bearing · wornBEARING WORN BEYOND LIMITS.Mar 17, 1995 · N33008 · Bell 412 · Main Rotor Mast/SwashplateSDR HEEA954548Bearing · wornBEARING WORN BEYOND LIMITS.Mar 17, 1995 · N22347 · Bell 412 · Main Rotor Mast/SwashplateSDR HEEA954547Bearing · wornBEARING WORN BEYOND LIMITS.Mar 17, 1995 · N2148K · Bell 412 · Main Rotor Mast/SwashplateSDR HEEA954536Motor Assy · intermittentINTERMITTENT OPERATION. INSPECTED BY ACCESSORY SHOP AND FOUND UNIT INTERMITTENT. REMOVED MOTOR AND FOUND DEAD SPOT ON ARMATURE.Mar 15, 1995 · N3893N · Bell 412 · Entrance StairsSDR 95ZZZX2134Switch · defectiveIN THE TEST MODE OF THE CAUTION PANEL, NONE OF THE CAUTION LIGHTS ILLUMINATE EXCEPT FOR THE CAUTION PANEL LIGHT. WHEN AN ACTUAL MALFUNCTION EXISTS, GET LIGHT AND A MASTER CAUTION LIGHT. EVERYTHING WORKS NORMALLY EXCEPT FOR THE PRESS-TO-TEST MODE. SUSPECT CAMar 15, 1995 · N4UV · Bell 412 · Central WarningSDR 95ZZZX2088Nut · failedWHILE INSTALLING TAIL BOOM WHEN COMING UP TO REQUIRED TORQUE ON UPPER RT TAIL BOOM TO FUSELAGE ATTACHMENT BOLT PN NAS 628, A 'POP' NOISE WAS HEARD AND THE BOLT THREADS SEEMED TO BE STRIPPED. THE BOLT AND NUT WERE REMOVED AND THE NUT WAS FOUND SPLIT IN TWO PIEMar 15, 1995 · N2071S · Bell 412 · Rotorcraft Tail BoomSDR 95ZZZX1348Extinguisher · disc failedAIRCRAFT WAS PARKED. FIRE EXTINGUISHER DISCHARGED. UPON REMOVAL, FOUND FRANGIBLE DISC RUPTURED. THE SQUIB WAS NOT DISCHARGED. THE FRANGIBLE DISC FAILED. THE FIRE EXTINGUISHER WAS HYDROSTATICALLY TESTED AND SERVICED JANUARY, 1990.Mar 7, 1995 · N2FOR · Bell 412 · Fire Bottle, FixedSDR HEEA954488Bolt · defectiveCARBIDE COATING FLAKING BEYOND LIMITS.Mar 3, 1995 · N21498 · Bell 412 · Main Rotor HeadSDR HEEA954483Indicator · sticksNEEDLE STICKS AT 3000 FPM GOING UP SCALE. TIME SINCE REPAIR :40.Mar 2, 1995 · N2261D · Bell 412 · Rate of Climb IndicatorSDR HEEA954480Cvr · defectiveCVR LIGHT ILLUMINATES INTERMITTENTLY IN FLIGHT. TIME SINCE REPAIR 553:50.Mar 2, 1995 · N2148K · Bell 412 · Audio/Video Monitoring
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