Bell UH-1H

Service difficulty reports · 93

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 = 'UH1H'
  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 AGQA065691Bearing · leakingBEARING IS LEAKING.Jan 28, 2000 · N53AG · Bell UH1H · Main Rotor Drive SystemSDR AGQA065689Support · crackedSUPPORT IS CRACKED.Jan 28, 2000 · N53AG · Bell UH1H · Fuselage Miscellaneous StructureSDR AGQA065679Coupling · chippedCOUPLING HAS CHIPPED TOOTH.Jan 28, 2000 · N53AG · Bell UH1H · Tail Rotor GearboxSDR 99ZZZX4090Stud · failedMOUNTING STUDS, 6 EACH, FAILED SUB-SURFACE AT 90 DEGREE GEARBOX MOUNTING FLANGE (APPARENT TENSILE FAILURE). SUBMITTER SUSPECTED PREVIOUS VIBRATORY OR OVER-TORQUE DAMAGE TO MOUNTING STUDS.Sep 21, 1999 · N32800 · Bell UH1H · Tail Rotor GearboxSDR 99ZZZX3932Switch · malfunctionedTRANSMISSION OIL HOT LIGHT COMES ON INTERMITTENTLY WITH TEMPERATURE IN GREEN. REMOVED AND REPLACED.Sep 8, 1999 · N51AG · Bell UH1H · Main Rotor GearboxSDR 99ZZZX3908Pump · malfunctionedFUEL BOOST PUMP INTERMITTENTLY COMES ON AND OFF. REMOVED AND REPLACED.Sep 8, 1999 · N52AG · Bell UH1H · Fuel Boost PumpSDR 99ZZZX3907Valve · leakingLEAKING FROM BREAK-AWAY VALVE ON CENTER FUEL CELL AT 'T' ON CROSS FEED LINE. REMOVED AND REPLACED.Sep 8, 1999 · N52AG · Bell UH1H · Aircraft Fuel Filter/StrainerSDR 99ZZZX3891Indicator · malfunctionedINDICATING FALSE AIRSPEED, SLOW TO CHANGE INDICATION. REMOVED AND REPLACED.Sep 8, 1999 · N51AG · Bell UH1H · Airspeed/Mach IndicatorSDR 99ZZZX3889Indicator · malfunctionedINDICATING FALSE AIRSPEED. SLOW TO CHANGE INDICATION. REMOVED AND REPLACED.Sep 8, 1999 · N51AG · Bell UH1H · Airspeed/Mach IndicatorSDR 99ZZZX3890Pump · malfunctionedHEARD NOISE FROM LEFT FUEL CELL. CHECKED PRESSURE ON BOOST PUMP, FOUND TO BE LOW. REMOVED AND REPLACED PUMP.Sep 7, 1999 · N51AG · Bell UH1H · Fuel Boost PumpSDR 99ZZZX3548Indicator · erraticINDICATOR IS ERRATIC AND UNRELIABLE. REMOVED AND REPLACED.Aug 31, 1999 · N52AG · Bell UH1H · Engine Fuel Indicating SystemSDR 99ZZZX3565Light · failedRADIO TRANSMIT LIGHT WILL NOT ILLUMINATE. REMOVED AND REPLACED.Aug 24, 1999 · N52AG · Bell UH1H · Communications SystemSDR 99ZZZX3547Ics Box · malfunctionedKCS BOX HAS NO SIDE TONE. REMOVED AND REPLACED.Aug 24, 1999 · N52AG · Bell UH1H · Interphone/Passenger Announcement (PA) SystemSDR 99ZZZX2766Damper · contaminatedSIGHT GLASS CLOUDY. REMOVED AND REPLACED.Jul 9, 1999 · N52AG · Bell UH1H · Main Rotor HeadSDR 99ZZZX2764Caution Panel · malfunctionedTRANSMISSION OIL HOT LIGHT CAME ON, TEMPERATURE GAUGE IS NORMAL. REMOVED AND REPLACED.Jul 9, 1999 · N51AG · Bell UH1H · Central WarningSDR 99ZZZX2606Volt Regulator · failedVOLTAGE REGULATOR WILL NOT PRODUCE POWER. REMOVED AND REPLACED.Jun 25, 1999 · N52AG · Bell UH1H · AC RegulatorSDR 99ZZZX2751Pump · damagedFUEL PUMP SOUNDS REAL ROUGH LIKE BEARINGS GROWLING. REMOVED AND REPLACED.Jun 17, 1999 · N53AG · Bell UH1H · Fuel Boost PumpSDR 99ZZZX2497Transceiver · failedTRANSCEIVER WOULD NOT TRANSMIT. REMOVED AND REPLACED.Jun 10, 1999 · N51AG · Bell UH1H · VHF Communications SystemSDR 99ZZZX2493Skid Tube · dentedSKID TUBE DENTED. REMOVED AND REPLACED.Jun 10, 1999 · N51AG · Bell UH1H · Emergency Flotation SectionSDR 99ZZZX2492Skid Tube · dentedSKID TUBE DENTED. REMOVED AND REPLACED.Jun 10, 1999 · N51AG · Bell UH1H · Emergency Flotation SectionSDR 99ZZZX2245Altimeter · malfunctionedALTIMETER HAD EXCESSIVE FRICTION. FAILED CERTIFICATION. REMOVED AND REPLACED.May 12, 1999 · N51AG · Bell UH1H · Airspeed/Mach IndicatorSDR 99ZZZX2244Audio Panel · malfunctionedAUDIO PANEL CAUSES STATIC IN PILOT'S HEAD SET.Apr 29, 1999 · N51AG · Bell UH1H · Entertainment SystemSDR 99ZZZX2243Bearing · roughROUGH GRIP BEARING. REMOVED AND REPLACED.Apr 29, 1999 · N53AG · Bell UH1H · Main Rotor HeadSDR GJQA061540Bearing · galledPILOT REPORTED MAIN ROTOR TRANSMISSION CHIP LIGHT. CLEANED AND INSPECTED. TRANSMISSION OIL MONITOR PLUG. FOUND SMALL AMOUNT OF MAGNETIC CHIPS. RE-INSTALLED CHIP DETECTOR AND WILL MONITOR. AT 100 HOUR INSPECTION, AT AIRFRAME HOURS 1,058.3, EVIDENCE OF MINOR Apr 2, 1999 · N98W · Bell UH1H · Main Rotor GearboxSDR GJQA061537Motor · malfunctionedPILOT'S WINDSHIELD WIPER MOTOR ERRATIC-WIPER BLADE INTERMITTENTLY OFF SIDE OF WINDSHIELD. REPLACED WIPER MOTOR, RIGGED BLADE, SWEEP AND GROUND CHECKED OKAY.Apr 1, 1999 · N98W · Bell UH1H · Windshield/Door Rain/Ice RemovalSDR 99ZZZX241Universal · damagedBEARING HAS BECOME UNSTAKED. REMOVED AND REPLACED.Dec 22, 1998 · N53AG · Bell UH1H · Main Rotor Drive SystemSDR 98ZZZX4348Volt Regulator · failedVOLTAGE REGULATOR WILL NOT PRODUCE VOLTAGE.Oct 23, 1998 · N53AG · Bell UH1H · DC Generating SystemSDR 98ZZZX3860Transponder · failedTRANSPONDER WOULD NOT TEST. SENT FOR REPAIR.Sep 23, 1998 · N51AG · Bell UH1H · ATC Transponder SystemSDR 98ZZZX3633Encoder · failedENCODER TRIPS CIRCUIT BREAKER. REMOVED AND REPLACED.Sep 14, 1998 · N51AG · Bell UH1H · Altimeter, Barometric/EncoderSDR 98ZZZX3637Regulator · failedWILL NOT REGULATE VOLTAGE. REPLACED.Sep 10, 1998 · N51AG · Bell UH1H · DC RegulatorSDR 98ZZZX3551Damper · damagedSIGHT GLASS CLOUDY. REMOVED AND REPLACED.Jul 10, 1998 · N53AG · Bell UH1H · Main Rotor HeadSDR 98ZZZX3550Gear · wornGEAR ON MOTOR SHAFT HAS WORN BUSHING ALLOWING GEAR TO DIS-ENGAGE FROM LIGHT GEAR. REMOVED AND REPLACED.Jul 10, 1998 · N53AG · Bell UH1H · Exterior LightingSDR 98ZZZX3549Damper · damagedSIGHT GLASS CLOUDY. REMOVED AND REPLACED.Jul 10, 1998 · N53AG · Bell UH1H · Main Rotor HeadSDR 98ZZZX3548Driveshaft · damagedBALANCED WEIGHT NOT INSTALLED. DRIVESHAFT WAS REPLACED.Jul 10, 1998 · N51AG · Bell UH1H · Engine/Transmission CouplingSDR 98ZZZX2789Indicator · failedATTITUDE INDICATOR WILL NOT CAGE. REMOVED FROM AIRCRAFT.Jul 1, 1998 · N51AG · Bell UH1H · Attitude Gyro and Indicating SystemSDR HAIGJQR0199Blade · mismanufacturedNEW BLADE INSTALLED 6/2/97. BEST TRACK OBTAINED 1.0 IPS VERTICAL AT 80 KNOTS. TRIED TO GET BLADES TO FLY TOGETHER FOR 1,128 HRS. PULLED BLADE AND PUT ANOTHER BLADE ON SHIP, TRACE NORMAL. INSTALLED BLADE S/N AFS-11686 ON ANOTHER SHIP TO TRY TO USE - COULD NJun 11, 1998 · N83NW · Bell UH1H · Main Rotor BladesSDR 98ZZZX2100Regulator · failedVOLTAGE REGULATOR WILL NOT HOLD A VOTLAGE SETTING, KEEPS FLUCTUATING. SENT FOR REPAIR. REF: CONTROL NR 98-5-8.May 13, 1998 · N51AG · Bell UH1H · DC RegulatorSDR 98ZZZX1876Valve · leaksLEFT SERVO VALVE LEAKS AT CAP, P/N 42596-2B. CONTROL NR 98-5-1.May 5, 1998 · N52AG · Bell UH1H · Rotorcraft Servo SystemSDR 98ZZZX1738Regulator · failedVOLTAGE REGULATOR WILL NOT STAY ON LINE AND CANNOT BE ADJUSTED. REMOVED AND REPLACED AND SENT FOR REPAIR. CONTROL NR 98-4-11.Apr 24, 1998 · N51AG · Bell UH1H · DC RegulatorSDR 97ZZZX3496Driveshaft · failedDRIVESHAFT CAUSED HIGH FREQUENCY VIBRATION DURING EXTERNAL LOAD OPERATIONS. DRIVESHAFT FAILED COMPLETELY AFTER APPROXIMATELY ONE MINUTE WHILE AIRCRAFT WAS RETURNING TO ITS LANDING AREA. AIRCRAFT SUSTAINED HARD LANDING WITH NO PILOT INJURIES.Jun 3, 1997 · N85NW · Bell UH1H · Engine/Transmission CouplingSDR 96ZZZX3912Hose · chafedDURING STRAIGHT AND LEVEL FLIGHT, PILOT NOTICED FLIGHT CONTROLS STARTING TO FEEL STIFF. THIS WAS IMMEDIATELY FOLLOWED BY A DROP IN HYDRAULIC PRESSURE. PILOT LANDED ACFT SAFELY IN A FIELD. MECHANIC WAS DISPATCHED AND FOUND A HYDRAULIC LINE HAD RUPTURED DUE TJul 25, 1996 · N51AG · Bell UH1H · Hydraulic System, MainSDR 96ZZZX2587Bolt · defectiveDURING C/W ARMY BULLETIN 95-ASAM-05 ON STABILIZER BAR PIVOT BOLTS, THE NUTS WERE FOUND BOTTOMED OUT ON THE BOLT SHANK. NEW PARTS IAW ARMY PART MANUAL DID NOT PROPERLY SOLVE THE PROBLEM, HOWEVER, INSTALLATION OF BELL'S COMMERCIAL 205 BOLTS 20-057-10S27D AND SPEMar 27, 1996 · N398M · Bell UH1H · Horizontal Stabilizer StructureSDR 95ZZZX2301Bolt · failedPILOT REPORTED SEVERE MAIN ROTOR VIBRATION DURING FLIGHT. AIRCRAFT LANDED WITHOUT FURTHER INCIDENT. INSPECTION REVEALED PILLOW BLOCK BOLT HAD FAILED. MAIN ROTOR HEAD PILLOW BLOCK HAD LIFTED .1250 INCH ABOVE MAIN ROTOR HEAD YOKE AND PILLOW BLOCK BUSHING HADMar 14, 1995 · N98NW · Bell UH1H · Main Rotor Head
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