Bell 407

Service difficulty reports · 6,813

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 = '407'
  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 HEEA0012446Hmu · failedFADEC DEGRADE AND RESTART FAULT LIGHT ON IN FLIGHT. REPLACEMENT S/N ALM0437.Jan 5, 1998 · N417PH · Bell 407 · Fuel Controlling SystemSDR HEEA0012417Fin Assembly · looseFIN ASSY HAS LOOSE STRINGER.Dec 31, 1997 · N467PH · Bell 407 · Vertical StabilizerSDR HEEA0012415Mast Assy · leakingMAST ASSY SEAL LEAKING. REPAIRED BY PHI.Dec 31, 1997 · N141MA · Bell 407 · Main Rotor Mast/SwashplateSDR HEEA0012411Receiver · failedGPS RECEIVER CONTINUES TO READ "ANTENNA FAULT" AFTER BAD ANTENNA WAS REPLACED.Dec 31, 1997 · N403PH · Bell 407 · Global Positioning SystemSDR HEEA0012405Transceiver · defectiveNOT ALL DISPLAY NUMBERS ARE VISIBLE. REPLACED INTEGRATED CIRCUITS I505 AND I506. REPAIRED. FOUND AUDIBLE TONE WHEN CHECKING MODULATION PERCENTAGE WITHOUT KEYING TRANSMITTER. FOUND LEG OF TRANSISTOR Q119 TO JUST ABOUT BE BROKEN WHEN REMOVED FOR CHECKING. REDec 31, 1997 · N403PH · Bell 407 · VHF Communications SystemSDR HEEA0012388Bearing · corrodedBEARING WORN AND CORRODED.Dec 22, 1997 · N57416 · Bell 407 · Tail Rotor BladesSDR 98ZZZX244Disk Pack · crackedDISCOVERED DURING 25 HOUR INSPECTION, T/R DRIVE SHAFT NR 5 DISK PACK CRACKED ON AFT SIDE IN 2 PLACES.Dec 22, 1997 · N437AL · Bell 407 · Tail Rotor Drive ShaftSDR 98ZZZX736Indicator · failedTORQUE INDICATOR WILL LOSE ALL POWER AT TIMES (INTERMITTENT). REPLACED INDICATOR.Dec 20, 1997 · N58236 · Bell 407 · Engine BMEP/Torque IndicatingSDR HEEA0012350Hub · defectiveGRIPS AND LOWER CONE SEAT RETIRE. SCRAPPED PARTS.Dec 15, 1997 · N57416 · Bell 407 · Main Rotor HeadSDR CA971231006Bolt · worn(CAN) AFTER BELL ADVISORY, ROTOR BRAKE ASSY CHECKED AND ALL 4 CALIPER TO ROTOR BRAKE PAD THRU BOLTS WERE FOUND WORN 1/3 TO 1/2 WAY THROUGH. WILL CHECK EVERY 200 HOURS.Dec 11, 1997 · Bell 407 · Main Rotor BrakeSDR HEEA0012334Oil Tube · gougedOIL TUBE FLARE HAS DEEP GOUGE.Dec 9, 1997 · N447PH · Bell 407 · Engine Oil Distribution (Airframe Furnished)SDR 98ZZZX262Bracket · wornSCHEDULED MAINTENANCE FOUND NR 2 TAIL ROTOR DRIVESHAFT FORWARD BRACKET UPPER BOLT HOLE WORN ELLIPTICAL.Dec 9, 1997 · N407AL · Bell 407 · Tail Rotor Drive ShaftSDR 98ZZZX261Bearing · wornSCHEDULED MAINTENANCE FOUND TAIL ROTOR DRIVESHAFT NR 2 HANGER BEARING ROUGH AND WORN, AXIAL PLAY.Dec 9, 1997 · N407AL · Bell 407 · Tail Rotor Drive ShaftSDR 98ZZZX260Bolt · wornSCHEDULED MAINTENANCE FOUND TAIL ROTOR DRIVESHAFT NR 2 BOLT WORN OR STEPPED, FRETTING.Dec 9, 1997 · N407AL · Bell 407 · Tail Rotor Drive ShaftSDR HEEA0012260Link · wornLINK HAS WORN BEARINGS. SERIAL NUMBERS REMOVED ARE NHFS2242 AND NHFS2275.Dec 5, 1997 · N417PH · Bell 407 · Tail Rotor Control SystemSDR HEEA0012256Torque Gauge · erraticTORQUE GAUGE READING ERRATIC.Dec 5, 1997 · N57416 · Bell 407 · Engine BMEP/Torque IndicatingSDR HEEA0012255Indicator · failedNG INDICATOR QUIT INDICATING.Dec 5, 1997 · N417PH · Bell 407 · Engine RPM Indicating SystemSDR HEEA0012254Rotor Brake · defectiveROTOR BRAKE PUCKS MISSING.Dec 5, 1997 · N437PH · Bell 407 · Main Rotor BrakeSDR HEEA0012253Indicator · failedFUEL PRESSURE INTERMITTENTLY GOES TO ZERO.Dec 5, 1997 · N417PH · Bell 407 · Fuel Pressure IndicatorSDR HEEA0012252Pump · leakingTRANSMISSION OIL PUMP LEAKING.Dec 5, 1997 · N427PH · Bell 407 · Main Rotor GearboxSDR HEEA0012247Pitch Link · bentON DAILY INSPECTION FOUND PITCH LINK TUBE PORTION WAS BENT AT UPPER END.Dec 5, 1997 · N427PH · Bell 407 · Main Rotor ControlSDR 98ZZZX83Frahm Asy · defectiveINSPECTION FOUND M/R FRAHM ASSY HAD LOOSE SPRINGS. REPLACED WITH NEW FRAHM FROM BELL HELICOPTER.Dec 5, 1997 · N407AP · Bell 407 · Main Rotor HeadSDR CA971223015Disk Pack · corroded(CAN) ALL 8 THOMAS COUPLINGS OF TAIL ROTOR DRIVE SHAFT FOUND CORRODED.Dec 4, 1997 · Bell 407 · Tail Rotor Drive ShaftSDR CA971219038Hose · chafed(CAN) HOSE WAS FOUND CHAFED NEAR ENGINE COWLING.Dec 3, 1997 · Bell 407 · Engine Oil Distribution (Airframe Furnished)SDR HEEA0012235Transmission · making metalTRANSMISSIONMAKING METAL.Dec 3, 1997 · N404PH · Bell 407 · Main Rotor GearboxSDR HEEA0012197Engine · contaminatedPOSSIBLE SALTWATER INGESTION.Dec 3, 1997 · N467PH · Bell 407 · Engine (Turbine/Turboprop)SDR HEEA0012179Transponder · weakTRANSPONDER WEAK OUTPUT.Dec 3, 1997 · N404PH · Bell 407 · ATC Transponder SystemSDR HEEA0012178Top Case · damagedFOUND EXCESSIVE MECHANICAL DAMAGE NEAR THE PYLON MOUNT AREA, WHERE THE SHIMS OF THE SUPPORT BEAMS MADE CONTACT. REPLACED WITH SERVICEABLE PART.Dec 3, 1997 · N407PH · Bell 407 · Main Rotor GearboxSDR HEEA0012177Filter Element · defectiveENGINE BYPASS INDICATION. REPLACED OIL FILTER.Dec 3, 1997 · N447PH · Bell 407 · Engine Oil Indicating SystemSDR HEEA0012170Blade · wornTAIL ROTOR BLADE BEARING WORN. PARTS AND LABOR WILL BE INVOICED...WO#9700658-99.Dec 2, 1997 · N417PH · Bell 407 · Tail Rotor BladesSDR 98ZZZX623Disk Pack · corrodedINSPECTING HELICOPTER PER AD 97-22-15, FOUND TWO T/R DRIVE DISC PACKS BEYOND DAMAGE LIMIT. DAMAGE WAS DUE TO CORROSION. REPLACED DAMAGED PARTS.Dec 2, 1997 · N58236 · Bell 407 · Tail Rotor Drive ShaftSDR HEEA0012169Bearing · roughROUGH BEARING. SERIAL NUMBERS REMOVED ARE C97-1888 AND K96-2112. SCRAPPED BEARINGS.Dec 1, 1997 · N141MA · Bell 407 · Rotorcraft Cooling Fan SystemSDR HEEA0012168Bearing · roughROUGH BEARING. SERIAL NUMBERS REMOVED ARE C97-1859 AND C97-1844. SCRAPPED BEARINGS.Dec 1, 1997 · N407PH · Bell 407 · Rotorcraft Cooling Fan SystemSDR HEEA0012166Bearing · roughROUGH BEARING. SERIAL NUMBERS REMOVED ARE K96-0116 AND K96-0134.Dec 1, 1997 · N447PH · Bell 407 · Rotorcraft Cooling Fan SystemSDR HEEA0012165Link · wornFOUND LINK BEARINGS WORN. SERIAL NUMBERS REMOVED ARE NHFS-2945 AND NHFS-2931.Nov 28, 1997 · N437PH · Bell 407 · Tail Rotor Control SystemSDR HEEA0012163Puck · unbondedROTOR BRAKE PUCK CAME UNBONDED.Nov 28, 1997 · N457PH · Bell 407 · Main Rotor BrakeSDR HEEA0012161Transmitter · failedTORQUE INDICATOR ERRATIC.Nov 28, 1997 · N57416 · Bell 407 · Rotor Drive Indicating SystemSDR HEEA0012160Shutoff Valve · failedHEATER SYSTEM WOULD NOT COME ON.Nov 28, 1997 · N407MM · Bell 407 · Heating SystemSDR HEEA0012158Transponder · inoperativeTRANSPONDER INOPERATIVE. FOUND UNIT TO HAVE LOW POWER OUT. REPLACED WEAK V101 CAVITY OSCILLATOR. REPAIRED. ADJUSTED AS NEEDED. BENCH CHECK GOOD.Nov 28, 1997 · N417PH · Bell 407 · ATC Transponder SystemSDR HEEA0012128Filter Element · trippedENGINE EXTERNAL OIL FILTER BYPASS BUTTON POPPED. REPLACED WITH SERVICEABLE FILTER.Nov 28, 1997 · N407MM · Bell 407 · Turbine Engine Oil SystemSDR 98ZZZX264Disk Pack · crackedIN C/W AD 97-24-17 DURING PHASE 6, FOUND ONE CRACKED LAMINATE OF TAIL ROTOR DRIVESHAFT DISK PACK AT NR 7 HYDRAULIC FORWARD LAMINATE.Nov 27, 1997 · N407AL · Bell 407 · Tail Rotor Drive ShaftSDR HEEA0012120Hub · damagedT/R HUB AND BLADE SUSPECT POSSIBLE CONTACT WITH STATIC STOP.Nov 21, 1997 · N407PH · Bell 407 · Tail Rotor HeadSDR 98ZZZX248Disk Pack · crackedFOUND DURING 25 HOUR AD INSPECTION, T/R DRIVESHAFT DISK PACK NR 5 HAS CRACKED COUPLING. CRACKED ON AFT SIDE OF COUPLING. PACK CONSISTS OF 1 DISK.Nov 21, 1997 · N437AL · Bell 407 · Tail Rotor Drive ShaftSDR 98ZZZX240Blade · crackedDAILY INSPECTION FOUND CRACK AT ROOT END OF T/R BLADE ON THE INSIDE OF THE LEADING EDGE. SUSPECT CAUSE IS HIGH STRESS AREA. PART IS UNSERVICEABLE. INSTALLED BEEF-UP STRESS BLOCK IN LEADING EDGE AT ROOT END OF BLADE.Nov 21, 1997 · N407AL · Bell 407 · Tail Rotor BladesSDR 97ZZZX5210Switch · no clearancePILOT UNABLE TO MOVE CYCLIC AFT AFTER TAKEOFF. APPROXIMATELY 40 POUNDS FORCE-FREED CYCLIC. CYCLIC CENTERING SWITCH HAD CONTACTED TARGET PLATE. LEAD SEAL FROM MANUFACTURER STILL INTACT. FLEET INSPECTIONS FOUND ONE OTHER AIRCRAFT HAVING CLEARANCE BELOW THE .Nov 21, 1997 · N406PH · Bell 407 · Main Rotor ControlSDR CA971210019Bracket · cracked(CAN) COMPLYING WITH AD CF-97-19, FORWARD BEARING STARTED TO MAKE NOISE. WHILE REPLACING BEARING, THE BRACKET WAS FOUND CRACKED. PART TC: 630.Nov 20, 1997 · Bell 407 · Tail Rotor Drive ShaftSDR 98ZZZX296Switch · misriggedPILOT REPORTED AT 1320, UNABLE TO MOVE CYCLIC STICK AFT AFTER TAKEOFF FROM PLATFORM. PILOT EXERTED APPROXIMATELY 40 POUNDS PRESSURE, CYCLIC FREED UP. LANDED ON WC-522. AFTER LANDING, CYCLIC AGAIN COULD NOT BE MOVED AFT. FOUND CYCLIC CENTERING SWITCH CONTACTNov 20, 1997 · N406PH · Bell 407 · Main Rotor ControlSDR 98ZZZX263Blower Housing · crackedBLOWER REMOVED BECAUSE OF ROUGH BEARINGS. HOUSING ALSO CRACKED. SHEET METAL HOUSING CRACKED AT RIVETED EDGE WHERE HOUSING ATTACHES TO 407-062-021-101 OIL COOLER DUCT ASSEMBLY. SUBMITTER SUGGESTED THAT POSSIBLY A POOR FIT PUTTING STRAIN ON SHEET METAL WHEN ANov 18, 1997 · N417AL · Bell 407 · Rotorcraft Cooling Fan SystemSDR 98ZZZX740Frahm · failedAIRCRAFT TT: 198.7 HOURS. THE RUBBER BOOT CAME LOOSE AND SPRING ROTATED. UNABLE TO BALANCE HELICOPTER. REPLACED FRAHM AND BALANCED HELICOPTER.Nov 17, 1997 · N96335 · Bell 407 · Main Rotor HeadSDR 98ZZZX739Regulator · failedAIRCRAFT TT: 100.5 HOURS. AFTER ONE HOUR OF FLIGHT, THE VOLTAGE INCREASED FROM 28.5 TO 30.5 VOLTS AND STABILIZES AT 30.5 VOLTS. REMOVED AND REPLACED VOLTAGE REGULATOR WITH NEW.Nov 17, 1997 · N96335 · Bell 407 · DC Regulator
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