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 ERAA095244Boot · damagedBOOT HAS ONLY 91.4 HOURS AND WAS INSTALLED 2/2004 AND IS ALREADY DEBONDING ON TORE INBOARD AREA. RETURNING TO BELL ON ERA PACK SLIP 5944 REQUESTING CREDIT.Apr 16, 2004 · N169EH · Bell 412 · Engine/Transmission CouplingSDR HEEA094229Generator · inoperativeON SHORT FINAL TO GC-158, THE NR 1 GENERATOR KICKED OFF LINE, HAD LIGHT SMOKE IN THE CABIN, AND SEVERAL CIRCUIT BREAKERS POPPED. FOUND SEVERAL CHAFED WIRES AT THE TOP OF THE WINDSHIELD CENTER POST WHERE THE BUNDLE SPLITS TO GO THE CIRCUIT BREAKER PANEL.Apr 12, 2004 · N108X · Bell 412 · AC Generation SystemSDR ERAA097503G Switch · failedFAILED G SWITCH TEST. DAMAGED MOUNTING TRAY AND END CAP. REPLACED G SWITCH, MOUNTING TRAY AND END CAP. TESTED AS NECESSARY.Apr 9, 2004 · N422EH · Bell 412 · Emergency Locator BeaconSDR ERAA094433Armature · chafedARMATURE THAT HAS SIGNS OF RUBBING AND GOT EXCESSIVELY HOT. RETURNING ON REPAIR ORDER NR RW-898494 REQUESTING WARRANTY EXCHANGE.Apr 5, 2004 · Bell 412 · Starter-GeneratorSDR ERAA098187Bushing · vibrationROTOR BRAKE QUILL HAS VIBRATION AND BEARING PLAY. BEARINGS SPINNING IN SLEEVE LINER, SPACER SET DAMAGED, BEARING RETAINER PLATE SCRAPPED. DISASSEMBLED, CLEANED AND VISUALLY INSPECTED ALL PARTS. INSPECTED, REPAIRED AND REASSEMBLED IAW BHT 412 CR/O CH 63. INMar 31, 2004 · N167EH · Bell 412 · Main Rotor BrakeSDR ERAA096628Blade · crackedM/R BLADE HAS CRACKS, VOIDS AT STA 90. SENT TO CTI FOR REPAIR INSPECTED, PERFORMED 2500 HOUR INSPECTIONS AND REPAIRED.Mar 24, 2004 · N417EH · Bell 412 · Main Rotor BladesSDR ERAA094441Cover · leakingFLOAT BAG HAS LEAK IN FORWARD CELL AT BLACK SEAM ACTION TAKEN: SENT TO OFFSHORE HELICOPTERRS FOR REPAIR. 14 HOLES FOUND 1 MISSING RELIEF VALVE. PATCHED 14 HOLES, REPLACE 1 MISSING RELIEF VALVE. C/W 6 MONTH INSPECTION IAW 41-SI-2.Mar 17, 2004 · N167EH · Bell 412 · Emergency Flotation SectionSDR AUS20040155Oil Cooler · leaking(AUS) ENGINE/TRANSMISSION OIL COOLER INTERNAL LEAK. THE LEAK ALLOWED TRANSMISSION OIL TO ENTER THE COMBINING GEARBOX OIL SYSTEM UNDERPRESSURE AND OVERFILL THE COMBINING GEARBOX WHICH THEN VENTED THROUGH THE BREATHER.Mar 3, 2004 · Bell 412 · Engine Oil CoolerSDR AUS20040143Gearbox · contaminated(AUS) COMBINING GEARBOX CHIP DETECTOR METAL CONTAMINATION.Mar 1, 2004 · Bell 412 · Turbine Engine Reduction GearSDR HEEA093677Pressure Switch · fluctuatesDURING CRUISE FLIGHT THE COMBINING GEARBOX OIL PRESSURE FLUCTUATED, LANDED. MAINTENANCE REPLACED THE OIL PRESSURE TRANSDUCER.Feb 27, 2004 · N2261D · Bell 412 · Rotor Drive Indicating SystemSDR ERAA094442Cover · leakingFLOAT BAG HAS PIN HOLES ALL OVER AFT COMPARTMENT ACTION TAKEN: SENT TO OFFSHORE HELICOPTERS. FLOAT WAS REPAIRED IAW OHSS 100-1 AND C/W INOPERATIVE IAW 412-01-2.Feb 20, 2004 · N412EH · Bell 412 · Emergency Flotation SectionSDR N401MAIsolation Mount · debondedENROUTE TO THE HOSPITAL FOR PATIENT PICKUP. STRONG 2 PER REV VIBRATION EXPERIENCED. LANDED AT PSP AIRPORT. CONTACTED MAINTENANCE FOR REPAIRS. AFTER TROUBLESHOOTING FOUND LATERAL ISOLATION MOUNT DEBONDED. REMOVED AND INSTALLED SERVICEABLE UNIT.Feb 14, 2004 · N401MA · Bell 412 · Engine (Turbine/Turboprop)SDR ERAA097513Blade · erodedTIP RIVETS ERRODED. TIP RIVETS OF BLADE A11405 ERRODED, TRUNNION ROUGH, FEATHER BEARINGS HAVE PLAY ONE BEARING GALLED, T/R BLADES. REMOVED TO F.O.M. REMOVED YOKE BEARINGS, TRUNNION ASSY, NDT INSPECTED, BEARING BORES, INSTALLED NEW BEARINGS, STAKED IAW 412 CJan 25, 2004 · N169EH · Bell 412 · Tail Rotor BladesSDR AUS20040052Hose · leaking(AUS) MAIN TRANSMISSION OIL HOSE LEAKING. FURTHER INVESTIGATION FOUND THE HOSE WAS CHAFING IN THE AREA UNDER THE IDENTIFICATION TAG.Jan 25, 2004 · Bell 412 · Main Rotor GearboxSDR ERAA092668Sun Gear · corrodedUPPER SUN GEAR WITH ONLY 143.1 HRS HAS NITRITING BREAKING DOWN, TEETH FRETTING AND PITTING. RETURNING ON ERA MMIR NR ERAA0001972 REQUESTING CREDIT.Jan 20, 2004 · N169EH · Bell 412 · Main Rotor GearboxSDR ERAA092667Spider Gear · corrodedSPIDER GEAR WITH ONLY 143.1 HRS HAS NITRITING BREAKING DOWN. TEETH FRETTING AND PITTING. RETURNING ON ERA PACK SLIP NR 5936 REQUESTING CREDIT.Jan 20, 2004 · N169EH · Bell 412 · Main Rotor GearboxSDR ERAA093702Transmission · making metalTRANSMISSION MAKING METAL. LOCK MISSING FROM BEARING RETENTION NUT ON ACCY AND T/R DRIVE QUILL. CLIP WAS THE CAUSE OF METAL. PIECES OF FAME SPRAY FROM PREVIOUS CASE REPAIR ALSO IN OIL FILTER BUT WAS NOT CAUSE FOR CHIP LIGHT. UPPER SUN GEAR AND SPIDER GEAR Jan 13, 2004 · Bell 412 · Main Rotor GearboxSDR ERAA094444Servo · leakingSERVO LEAKING AND INPUT LEVER LOOSE. MAJOR SCORING ON UPPER PISTON UPPER PISTON SEVERELY SCORED, RUN OUT CHECK EXCEEDS ALL LIMITS .280. PERFORMED OVERHAUL INSPECTION TIMED AND TESTED. POST ASSEMNBLY RUN OUT CHECK .106.Jan 11, 2004 · N164EH · Bell 412 · Rotorcraft Servo SystemSDR AUS20031299Gearbox · contaminated(AUS) ENGINE COMBINING GEARBOX METAL CONTAMINATION.Dec 29, 2003 · Bell 412 · Turbine Engine Reduction GearSDR ERAA093712Bearing · defectiveBAD BEARING FROM STOCK. REMOVED DEFECTIVE BEARING FROM BELLCRANK. INSTALLED NEW BEARING IAW MFG-ALL-SPM.Dec 21, 2003 · Bell 412 · Tail Rotor Control SystemSDR HEEA092086Packing · leakingDURING CRUISE FLIGHT THE NR 1 ENGINE OIL PRESSURE DROPPED BELOW RED LINE. SHUT DOWN ENGINE AND RETURNED TO BASE.Dec 7, 2003 · N2149S · Bell 412 · Engine Oil Distribution (Airframe Furnished)SDR AUS20031221Engine · noisy(AUS) ENGINE POWER SECTION REMOVED DUE TO UNKNOWN NOISE.Nov 28, 2003 · Bell 412 · Turbine SectionSDR ERAA091801Engine · making metalENGINE MAKING METAL. HEAVY WEAR ON TORQUE METER GEAR AND PINION. INSTALLED SERVICEABLE GEARBOX. COMPLIED WITH E CHECK.Nov 24, 2003 · N423EH · Bell 412 · Engine (Turbine/Turboprop)SDR AUS20031191Gyro · failed(AUS) COPILOT TARSYN GYRO FAILED.Nov 22, 2003 · Bell 412 · Attitude Gyro and Indicating SystemSDR ERAA092654Blower · damagedOIL COOLER BLOWER DUE 1500 HR OVERHAUL. NO DEFECTS NOTED. DURING NDT CHECK NOTED ON BLADE OF IMPELLER AND RIM OF CASING ASSY. DISASSEMBLED, CLEANED AND VISUALLY INSPECTED ALL PARTS. C/W NDT OF REQUIRED PARTS. OVERHAULED IAW ERA CAMP PROGRAM AND BHT 412-COct 26, 2003 · N164EH · Bell 412 · Engine Oil Distribution (Airframe Furnished)SDR ERAA091807Float · leakingFORWARD CHAMBER HAS LEAK / CHAFING. FLOAT INSPECTION COMPLIED WITH. ALL SERVICEABLE IAW 412-SI-2.Oct 20, 2003 · N417EH · Bell 412 · Emergency Flotation SectionSDR ERAA091806Float · leakingMLG FLOAT BAG LEAKS DOWN. FLOAT WAS INSPECTED. REPAIRED AND TESTED SERVICEABLE IAW 412-SI-2.Oct 20, 2003 · N417EH · Bell 412 · Emergency Flotation SectionSDR ERAA097086Switch · stuckG SWITCH WAS STUCK, NOW IS TOO SENSITIVE. BATTERY EXPIRED ACTION TAKEN, REPLACED G SWITCH, REPLACED BATTERY PACK. REPLACED G SWITCH. REPLACED BATTERY PACK, TESTED ELT IAW ARTEX PROCEDURES.Oct 16, 2003 · N167EH · Bell 412 · Emergency Locator BeaconSDR ERAA093706Quill Assy · wornQUILL ASSY HAS VERTICAL PLAY IN SHAFT. SPACER SET DAMAGED FROM APPARENT BEARING ROTATION IN LINER OF SLEEVE. DISASSEMBLED, CLEANED AND VISUALLY INSPECTED ALL PARTS. CHECKED SHIMMING AND REASSEMBLED, TORQUED AND SAFTIED IAW BHT 412-CR, 0 CHAPTER 63 INSTALLINGOct 1, 2003 · Bell 412 · Main Rotor GearboxSDR HEEA090474Governor · failedDURING CRUISE FLIGHT NR 1 ENGINE ITT WENT TO 970 DEGREES AND NR 2 ENGINE TORQUE WENT TO ZERO. PLACED NR 1 ENGINE GOVERNOR IN MANUAL AND LANDED AT NEAREST AIRPORT. REPLACED THE NR 1 ENGINE AND AFCU DUE TO HIGH SIDE GOVERNOR FAILURE. REPLACED THE NR 1 ENGINE Sep 30, 2003 · N412SM · Bell 412 · Turbine GovernorSDR HEEA090148Engine · malfunctionedIN FLIGHT NR 1 ENGINE ITT WENT TO 970 DEGREES, NR 2 ENGINE TORQUE DROPPED TO ZERO. APPEARED TO BE NR 1 ENGINE GOVERNOR HIGH SIDE FAILURE. RETURNED NR 1 ENGINE THROTTLE TO IDLE, SWITCHED NR 1 ENGINE THROTTLE TO MANUAL AND FLEW TO NEAREST AIRPORT IN MANUAL THRSep 30, 2003 · N412SM · Bell 412 · Engine (Turbine/Turboprop)SDR ERAA094443Mast · making metalTRANSMISSION MAKING METAL ACTION TAKEN: DISASSEMBLED, CLEANED AND VISUALLY INSPECTED ALL PARTS AND BEARINGS FOR METAL CONTAMINATION. INSPECTED AND REASSEMBLED IAW 412 CR AND O CHAPTER 63, T.B. 412-96-137 AND T.B. 412-98-150 INSTALLING NEW MAST POLE, NEW BEARSep 17, 2003 · N419EH · Bell 412 · Main Rotor Mast/SwashplateSDR HEEA090147Servo · bindingFIVE MILES SOUTH OF MORGAN CITY STARTED HAVING TROUBLE WITH THE TRIM. LANDED AT MORGAN CITY. MAINTENANCE FOUND THE TAIL ROTOR SERVO BINDING. REPLACED SERVO.Sep 16, 2003 · N33008 · Bell 412 · Rotorcraft Servo SystemSDR ALGA089171Spider · crackedTRANSMISSION DISASSEMBLED FOR METAL IN OIL, FOUND LOWER PLANETARY SPIDER CRACKED.REMOVED AND REPLACED LOWER PLANETARY SPIDER.Sep 12, 2003 · Bell 412 · Main Rotor GearboxSDR ERAA093707Blade · pin holeDURING INSPECTION FOUND PIN HOLDS IN LEADING EDGE BEYOND LIMITS. SENT FOR REPAIR, INSPECTED PERFORMED 2500 HOUR INSPECTIONS IAW MFG 412 MM CHAPTER 5; REPLACED IB AND OB SPLICE COVERS IAW MFG 412 CR AND O PAGE 86B; TRIMMED IB ABRASION STRIP TANG IAW MFG 204-09Sep 10, 2003 · N169EH · Bell 412 · Main Rotor BladesSDR HEEA088947Panel · mismanufacturedPANEL MISMANUFACTURED. WHEN WE STARTED TO DRILL FASTENER HOLES INTO TRIMMED PANEL AT AFT CENTER EDGE, PANEL SEPERATED AND A CLEAR HARD SUBSTANCE CAME OUT OF PANEL. PANEL REPAIRED BY ACI.Aug 26, 2003 · N2258F · Bell 412 · Fuselage Main, Plate/SkinSDR HEEA088927Control Stick · mismanufacturedCONTROL STICK BOLT HOLE FOR ELBOW IS MISALIGNED. BOLT WILL NOT GO THROUGH.Aug 22, 2003 · Bell 412 · Rotorcraft Flight ControlSDR HEEA088926Control Stick · mismanufacturedSTICK BOLT HOLE FOR ELBOW IS MISALIGNED. BOLT WILL NOT GO THROUGH.Aug 22, 2003 · Bell 412 · Rotorcraft Flight ControlSDR ERAA091800Fuel Control · leakingFUEL CONTROL LEAKING AT MAX FUEL FLOW ADJUSTMENT. DRIVESHAFT AND GOVERNOR WEIGHS QUITE OLD. OVERHAULED IAW MFG OHM FORM 15-602E. CEB'S 1357R1, 136719, 1382R1 AND SIL 26 EMBODIED.Aug 13, 2003 · N423EH · Bell 412 · Fuel Controlling SystemSDR HEEA089034Odor · detectedENROUTE FROM MORGAN CITY TO GC-158, CREW SMELLED BURNING ELECTRICAL INSULATION. NO SMOKE REPORTED. MADE PRECAUTIONARY LANDING AT GC-65.Aug 12, 2003 · N800Y · Bell 412 · Air Distribution SystemSDR HEEA088918Signal Cond Unit · intermittentSIGNAL COND UNIT HAS INTERMITTENT LOW LEVEL LIGHT.Aug 12, 2003 · N6559Z · Bell 412 · Fuel Indicating SystemSDR HEEA088917Amplifier · inaccurateISOLATION AMPLIFIER CAUSES ADI TO TILT 30 DEGREES LEFT QUADRANT.Aug 12, 2003 · N3893P · Bell 412 · Autopilot SystemSDR AUS20030816Ring · loose(AUS) SWASHPLATE INNER RING LOOSE. INVESTIGATION FOUND GIMBAL BOLTS PNO 212-011-463-001 STEPPED AND BUSHING PNO 204-010-496-003 MOVING IN INNER RING HOLE. HOLE HAD BEEN ENLARGED BY APPROXIMATELY 0.762MM(0.030IN). SUSPECT CAUSED BY EXCESSIVE USE OF SEALANT ON BAug 11, 2003 · Bell 412 · Main Rotor Mast/SwashplateSDR HEEA088609Crosstube · corrodedCROSSTUBE CORRODED BEYOND LIMITS IN ZONE C-3. SCRAPPED.Aug 6, 2003 · N142PH · Bell 412 · Main Landing Gear Strut/Axle/TruckSDR HEEA088605Blade · crackedMAIN ROTOR BLADE CRACKED. SHOP REPAIR.Aug 6, 2003 · N3911L · Bell 412 · Main Rotor BladesSDR HEEA088603Check Valve · leakingCHECK VALVE SEEPING FROM WEEP HOLE. SHOP REPAIR.Aug 6, 2003 · N3893P · Bell 412 · Hydraulic System, MainSDR HEEA088602Hanger Assy · damagedHUMS, READINGS WERE HIGH. REPLACED PART.Aug 6, 2003 · N2149S · Bell 412 · Tail Rotor Drive ShaftSDR HEEA088571Actuator · inoperativePARTICLE ACTUATOR MOTOR DOES NOT EXTEND OR RETRACT.Aug 6, 2003 · Bell 412 · Engine Air Intake SystemSDR HEEA088570Indicator · intermittentINDICATOR STICKS INTERMITTENTLY.Aug 6, 2003 · Bell 412 · Hydraulic Pressure IndicatorSDR HEEA088567Bleed Valve · failedENGINE COMPRESSOR BLEED VALVE FAILED TO REMAIN CLOSED AT HIGH ENG OUTPUT CAUSING COMPRESSOR SURGES. REPLACED.Aug 5, 2003 · N142PH · Bell 412 · Compressor Bleed Valve
Back to Bell 412