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 HEEA107321Tube · chafedNR 2 ENGINE OIL PRESSURE BEGAN TO FLUCTUATE AND SLOWLY DECREASED. WHEN GAUGE READING APPROACHED THE LOWER LIMIT THE MASTER CAUTION LIGHT BEGAN TO FLICKER. ENGINE WAS SHUTDOWN AND AIRCRAFT RETURNED TO BASE. MAINTENANCE FOUND A HOLE CHAFED IN THE OIL TO FUEL Nov 1, 2005 · N2148K · Bell 412 · Engine Oil PressureSDR YTRR106610Bearing · wornROD END BEARING FOUND WORN. REPLACED ASSEMBLY.Nov 1, 2005 · N4125C · Bell 412 · Main Rotor ControlSDR YTRR106609Bearing · wornROD END BEARING FOUND WORN. REPLACED ASSEMBLY.Nov 1, 2005 · N4125C · Bell 412 · Main Rotor ControlSDR YTRR106608Bearing · wornBEARING FOUND WORN. REPLACED ROD END ASSY.Nov 1, 2005 · N4125C · Bell 412 · Main Rotor ControlSDR CA051104009Tube · leaking(CAN) THE ENGINE WAS REPORTED TO HAVE FLAMED OUT IN FLIGHT RESULTING IN AN UNSCHEDULED LANDING. SUBSEQUENT INSPECTION REVEALED AN ENGINE FUEL DELIVERY TUBE LEAK. THE ENGINE EXHAUST DUCT WAS ALSO FOUND CRACKED.Oct 24, 2005 · Bell 412 · Engine Fuel DistributionSDR ALGA106433Bearing · failedTRANSMISSION ASSY MAKING METAL, DISSEMBLED FOUND ROTOR BRAKE QUILL DUPLEX BEARING BEARING BREAKING DOWN. / REMOVEN AND REPLACED DUPLEX BEARING P/N 222-342-420-101Sep 22, 2005 · Bell 412 · Main Rotor BrakeSDR HEEA107327Indicator · fluctuatesWHILE PERFORMING CRUISE CHECKLIST, NOTED C-BOX OIL PRESSURE LOW AND FLUCTUATING. MAINTENANCE REPLACED INDICATOR.Sep 8, 2005 · N3893P · Bell 412 · Rotor Drive Indicating SystemSDR HEEA107323Tube · failedIN CRUISE FLIGHT AT 1200' AT 70% TORQUE, OBSERVED LARGE TORQUE SPLIT. NR 1 HIGH, NR 2 HAD DROPPED TO ZERO. N1 ON NR 2 WAS NOTED AT 58%. IDENTIFIED NR 2 ENGINE GOVERNOR FAILURE. SELECTED NR 2 ENGINE MANUAL THROTTLE, DIVERTED TO MANASSAS. LANDED WITH NO INCAug 22, 2005 · N2258F · Bell 412 · Turbine GovernorSDR YTRR105444Servo · leakingON ROUTINE INSPECTION FOUND HYDRAULIC SERVO LEAKING BEYOND ACCEPTABLE LIMITS.Aug 19, 2005 · N4125C · Bell 412 · Hydraulic System, MainSDR YTRR105445Spindle · debondedON ROUTINE INSPECTION FOUND ELASTOMERIC PIVOT BEARING DEBONDED BEYOND LIMITS.Aug 13, 2005 · N4125C · Bell 412 · Main Rotor HeadSDR HEEA107345O-Ring · leakingDURING PATIENT TRANSFER LOW HYDRAULIC PRESSURE WARNING LIGHT ILLUMINATED, SECURED NR 2 HYDRAULIC SWITCH AND LANDED AT NEAREST AIRPORT WITHOUT INCIDENT. MAINTENANCE FOUND ACCUMULATOR O-RING LEAKING. REPLACED O-RING.Apr 23, 2005 · N412SM · Bell 412 · Hydraulic System, MainSDR 04210533060Pump · noisyTHE AIRCRAFT WAS DECLARED OUT OF SERVICE AFTER LANDING, BECAUSE OF AN UNUSUAL NOISE DURING SHUTDOWN. ANOTHER COMPANY AIRCRAFT WAS DISPATCHED TO COMPLETE THE TRANSPORT. NR 2 HYDRAULIC PUMP MAKING LOUD NOISE. REPLACED NR 2 HYDRAULIC PUMP. OPS CHECK GOOD, FLIGApr 21, 2005 · N401MA · Bell 412 · Hydraulic Pump (Electric/Engine), MainSDR ALGA100793Drive Gear · failedTRANSMISSION DISASSEMBLED FOR METAL, FOUND DUPLEX BEARING BREAKING DOWN. REMOVED AND REPLACED DUPLEX BEARING P/N 205-040-245-001.Mar 9, 2005 · N5NBCZ · Bell 412 · Main Rotor GearboxSDR CA050307010Nut · incorrect(CAN) CAD PLATED NUT NAS1022AX8 INSTALLED INSTEAD OF DRY FILM LUBED NAS10222A8. THE NAS1022AX8 NUT FAILED DURING TORQUE UP, PART CRACKED.Feb 24, 2005 · Bell 412 · Main Rotor HeadSDR HEEA107360Indicator · failedCOPILOT NR 1 TORQUE INDICATOR FAILED IN FLIGHT. MAINTENANCE REPLACED THE TORQUE INDICATOR.Feb 16, 2005 · N2261D · Bell 412 · Rotor Drive Indicating SystemSDR ALGA100083Bearing · debondedELASTOMERIC BEARING COMPLETELY UNBONDED FROM SPINDLE / REPLACED WITH NEW/SERVICEABLE PART BY FIELD MAINTENANCE.Feb 5, 2005 · N5NBGS · Bell 412 · Main Rotor HeadSDR HEEA098914Transistor · burned outIN CRUISE FLIGHT, NOTED ELECTRICAL BURNING SMELL. RETURNED TO BOOTHVILLE. MAINTENANCE FOUND TRANSISTOR 8Q2 FOR INSTRUMENT LIGHTS HAD SHORTED AND CAUSED RESISTOR 8R12 TO BURN OUT. REPLACED TRANSISTOR 8Q2, RESISTOR 8R12 AND RHEOSTAT 8R5.Dec 31, 2004 · N2149S · Bell 412 · Instrument PanelSDR CA041208003Fuel Cell · contaminated(CAN) WHILE TROUBLE SHOOTING A FUEL INDICATION PROBLEM, TWO RED PLASTIC PROTECTIVE CAPS WERE FOUND IN THE LT UPPER AFT TANK.Dec 6, 2004 · Bell 412 · Fuel StorageSDR CA041203003Bearing · failed(CAN) IN FLIGHT NOISE WAS HEARD AND SMALL AIRFRAME VIBRATION. A/C LANDED AS PRECAUTION AT AIRPORT. AIRCRAFT INSPECTED AND PROBLEM NOT DETECTED. COULD NOT DUPLICATE NO ISE OR VIBRATION. A/C FLOWN TO BASE AIRPORT. UPON FURTHER INVESTIGATION BEARING IN SPEED REDUDec 2, 2004 · Bell 412 · Cabin Cooling SystemSDR ERAA098188Skid · crackedFLOAT/SKID ASSY HAS CRACKED SADDLE. AFT SADDLE ON SKID TUBE CRACKED IAW RING HAS DAMAGED THREADS. REMOVED ALL FLOAT/COVER ASSEMBLIES, HOSES, PASSENGER STEP, SKID SHOES AND HARDWARE FROM UNSERVICEABLE SKID TUBE AND RE-INSTALLED EVERYTHING (SAME AS REMOVED) ONOct 26, 2004 · N164EH · Bell 412 · Wheel/Ski/FloatSDR ERAA098186Blade · vibrationVIBRATION AFTER 3 DAYS OF HEAVY RAIN. NO BALANCE WEIGHTS ON BALANCE BRACKETS. REMOVED T/R BLADE A-10206 AND SENT TO CTI FOR EVALUATION. REMOVED T/R BLADES, VISUALLY INSPECTED ALL COMPONENTS, INSTALLED SERVICEABLE T/R BLADES, LUBED TRUNNION, MARVEL BALANCED,Oct 9, 2004 · N421EH · Bell 412 · Tail Rotor BladesSDR ERAA097498G Switch · intermittentG SWITCH IS TOO SENSITIVE AND IT WORKS INTERMITTENTLY SUB ASSEMBLY AND TOP COVER CRACKED/BROKEN. REPLACED SUB ASSEMBLY AND TOP COVE, G SWITCH. REPLACED AS PART OF SUBASSEMBLY.Sep 16, 2004 · N412EH · Bell 412 · Emergency Locator BeaconSDR ERAA097517Saddle · brokenFORWARD SADDLE ON SKID TUBE BROKEN. FWD SADDLE ON SKID TUBE BROKEN. PERFORMED INSPECTION OF ALL FLOATS, COVERS AND HOSES IAW ERA 412 CAMP-1, INSPECTION GUIDE AND BHT-412-SI-2. ALL COMPONENTS FOUND TO BE IN SERVICEABLE CONDITION. REMOVED ALL COMPONENTS FROMAug 31, 2004 · Bell 412 · Wheel/Ski/FloatSDR ERAA097514Oil Cooler · damagedOIL COOLER CORE LEAKING EXCESSIVE OIL. UNIT EXHIBITED EXCESSIVE CORE DAMAGE, DIRTY CORE, DAMAGED FINE, EXCESSIVE CARBON AND DIRT AND WORN SEALS. A MATRIX CORE WAS INSTALLED, CLEANED, FLUSHED, OVERHAULED, WORN SEALS REPLACED, TESTED AND INSPECTED IAW DAR-8500Aug 24, 2004 · N421EH · Bell 412 · Tail Rotor GearboxSDR ERAA097098Skid · corrodedSKID TUBE CORRODED AND AFT SADDLE CRACKED. FORWARD, MIDDLE AND AFT FLOAT COVERS AND END CAPS WORN AND TORN SKID TUBE CORRODED BEYOND LIMITS. AFT FLOAT BAG (SN 0372) HAS AN EXCESSIVE NUMBER OF HOLES. MIDDLE FLOAT BAG (SN 0628) HAS ONE HOLE. PASSENGER STEP AJul 30, 2004 · N164EH · Bell 412 · Wheel/Ski/FloatSDR ERAA097518Skid · corrodedSKID TUBE SEVERELY CORRODED. SKID TUBE CORRODED BEYOND LIMITS. ALL FLOAT AG COVERS WORN AND TORN. AFT FLOAT BAG HAS EXCESSIVE NUMBERS OF HOLES. FWD FLOAT BAG AS 2 HOLES. ALL RUBBER BANDS AND RETAINERS ON FLOAT COVES IN NEED OF REPLACEMENT. ALL 8 BUSHINGSJul 29, 2004 · N164EH · Bell 412 · Wheel/Ski/FloatSDR ERAA098196Transmitter · crackedFUEL QUANTITY FLUCTUATES. FOUND CASE CRACKED. REPLACED CASE ASSEMBLY. UNIT THEN FUNCTIONALLY TESTED GOOD.Jul 23, 2004 · N423EH · Bell 412 · Fuel Quantity SensorSDR ERAA097094Rotor Head · out of balanceUNABLE TO BALANCE HIGH FREQ, TRUNNION HAS PLAY. PITCH HORN BUSHINGS MISSING, NO PLAY IN YOKE BRHS, TRUNNION FEELS GOOD, NO DETECTABLE PLAY. TRUNNION SPLINES ARE WEAR STEPPED. SCRAPPED TRUNNION. DISASSEMBLED T/R ASSY, REPAIRED T/R BLADE A-10206, INSTALLED NJul 22, 2004 · N164EH · Bell 412 · Tail Rotor HeadSDR ERAA097095Blade · damagedSET SCREW MISSING IN TIP CAP SUSPECT FACTORY BALANCE WEIGHTS MISSING. INSPECTED, PERFORMED 2500 HOUR INSPECTIONS PER BHT-412-MM CHAPTER 5; REPLACED INBOARD AND CENTER TRIM TABS PER 204-099-223 APPENDIX B SECTION 2 PARAGRAPH 2.7REV L; REPAIRED SKIN ON UPPER SUJul 12, 2004 · N417EH · Bell 412 · Main Rotor BladesSDR ALGA095994Mast · corrodedFOUND CORROSION PITTING ON MAST. REPLACED WITH NEW PART.Jul 7, 2004 · Bell 412 · Main Rotor Mast/SwashplateSDR ALGA095993Nut · corrodedFOUND CORROSION PITTING ON MAST NUT. REPLACED WITH NEW PART.Jul 7, 2004 · Bell 412 · Main Rotor Mast/SwashplateSDR ALGA095992Mast · corrodedFOUND CORROSION PITTING ON MAST. REPLACED WITH NEW PART.Jul 7, 2004 · Bell 412 · Main Rotor Mast/SwashplateSDR ALGA095990Nut · corrodedFOUND CORROSION PITTING ON MAST NUT. REPLACED WITH NEW PART.Jul 7, 2004 · Bell 412 · Main Rotor Mast/SwashplateSDR ERAA097100Bearing · failedSTARTER GEN HAS BEARING FAILURE. OVERHAULED AND TESTED.Jun 29, 2004 · N169EH · Bell 412 · Starter-GeneratorSDR HEEA096491Window · separatedDURING APPROACH TO LAND, A PASSENGER LEANED AGAINST THE WINDOW ON THE RT SIDE SLIDING DOOR AND THE WINDOW RELEASED AND WAS LOST. AIRCRAFT LANDED WITH NO FURTHER OR OTHER DAMAGE AND NO INJURIES.Jun 25, 2004 · N108X · Bell 412 · Door WindowsSDR HEEA096017Window · departedDURING APPROACH TO LAND, A PASSENGER LEANED AGAINST THE WINDOW ON THE RT SIDE SLIDING DOOR AND THE WINDOW RELEASED AND WAS LOST. AIRCRAFT LANDED WITH NO FURTHER OR OTHER DAMAGE AND NO INJURIES.Jun 25, 2004 · N108X · Bell 412 · Passenger Compartment WindowsSDR HEEA096019Fuel Control · malfunctionedIN CRUISE FLIGHT, THE NR 1 ENGINE OUT LIGHT CAME ON, TORQUES SPLIT WITH NR 1 ENGINE LOW, RPM LIGHT CAME ON, LOW AUDIO CAME ON, CYCLIC CENTERING LIGHT CAME ON, AND NR 1 ENGINE N1 WENT TO 40 PERCENT. FOLLOWED CHECK LIST FOR LOW SIDE FUEL CONTROL FAILURE AND LAJun 21, 2004 · N1202T · Bell 412 · Fuel Control/Turbine EnginesSDR ERAA097500G Switch · inoperativeFOUND G SWITCH INOPERABLE. FOUND G SWITCH INOP. SENT UNIT TO ARTEX FOR REPAIR.Jun 17, 2004 · N169EH · Bell 412 · Emergency Locator BeaconSDR ALGA096466Ring · crackedFOUND OUTER RING CRACKED. REPLACED WITH SERVICEABLE PART.Jun 12, 2004 · Bell 412 · Main Rotor Mast/SwashplateSDR ERAA097097Bearing · damagedPIVOT BEARING BROKEN IN HALF. CAME IN CONTACT WITH M/R FITTING WHEN PIVOT BEARING BROKE. NO DEFECTS NOTED ON SPINDLE. PIVOT BEARING BROKEN. REMOVED PITCH HORN FROM SPINDLES BROKEN PIVOT BEARING, CLEANED AND INSPECTED PARTS. C/W NDT OF SPINDLE AND REASSEMBJun 7, 2004 · N164EH · Bell 412 · Main Rotor HeadSDR ERAA097112Altimeter · failed200 FT DIFFERENCE ON MODE C. UNIT FAILED SCALE ERROR TEST. TESTED UNIT. FAILED SEND TO ANCHORAGE FOR REPAIR.Jun 1, 2004 · N423EH · Bell 412 · Altimeter, Barometric/EncoderSDR ERAA097096Blade · debondedMID LEADING EDGE SCARF JOINT DEBONDED, LEADING EDGE BOND LINE VOIDED NEAR TIP AND UNDER SIDE OF BLADE DETERIORATED. SENT TO CTI FOR REPAIR. INSPECTED PERFORMED 2500 HOUR INSPECTION AND REPAIRED.May 20, 2004 · N169EH · Bell 412 · Main Rotor BladesSDR ERAA096625Oil Cooler · dirtyHIGH OIL TEMP. TOO MUCH PAINT ON FIN; TOO LITTLE AIR FLOW. DIRTY AND BLOCKED CORE. UNIT WAS CLEANED, FLUSHED, OVERHAULED, TESTED AND INSPECTED.May 20, 2004 · N164EH · Bell 412 · Engine Oil CoolerSDR ERAA097088Fuel Control · malfunctionedON START WOULD ACELERATE TO 62 TO 65 THEN ADVANCING THROTTLE WOULD STILL BLEED OFF. OVERHAULED IAW HONEYWELL OHM FORM 15-6026.May 14, 2004 · N423EH · Bell 412 · Fuel Controlling SystemSDR HEEA096023Pump · failedDURING FLIGHT THE NR 1 BOOST PUMP FAILED. MAINTENANCE REPLACED THE NR 1 BOOST PUMP.May 12, 2004 · N108X · Bell 412 · Fuel Boost PumpSDR HEEA096022Power Supply · burnedDURING FLIGHT THERE WAS A BURNING ODOR IN COCKPIT AND CIRCUIT BREAKER POPPED. MAINTENANCE FOUND THE INSTRUMENT LIGHTS POWER SUPPLY HAD BURNED. REPLACED BURNED INSTRUMENT LIGHTS POWER SUPPLY.May 12, 2004 · N21498 · Bell 412 · Instrument PanelSDR ERAA096626Blower · damagedOIL COOLER BLOWER DUE OVERHAUL. IMPELLER HAS TWO CRACKED BLADES. SPACER BETWEEN BRGS MECHANICALLY DAMAGED. KEY MECHANICALLY DAMAGED. JC/W PRELIMINARY INSPECTION. DISASSEMBLED, STRIPPED PRIMER, SCRAPPED IMPELLER, BRG SPACER AND KEY. FPI AND MPI'D PARTS ASMay 9, 2004 · N167EH · Bell 412 · Engine Oil CoolerSDR ERAA096627Blade · damagedT/R BLADE HAS VOID AT OUTBOARD TIP, SKIN LIFTING. SENT TO CTI FOR REPAIR. INSPECTED PER 204-099-223 VOLUME X SECTION 1.1 AND 1.2 REV 1; COMPLIED WITH ASB 412-00-106; REPAIRED SKIN DAMAGE AT TIP FWD EDGE ON BOTH SURFACES PER 212-64-10-002 AND 8110-38497; REPMay 4, 2004 · N168EH · Bell 412 · Tail Rotor BladesSDR HEEA094283Indicator · fluctuatesSHORTLY AFTER TAKEOFF, THE NR 1 ITT INDICATOR FLUCTUATED. RETURNED. MAINTENANCE REPLACED ITT INDICATOR.Apr 19, 2004 · N108X · Bell 412 · Engine EGT/TIT Indicating SystemSDR ERAA094434Blade · peelingT/R BLADE SENT FOR REPAIR 5/29/2003. BLADE HAS ONLY 110.2 HRS SINCE REPAIR AND IS PEELING. RETURNING ON REPAIR ORDER RW-898678 REQUESTING WARRANTY REPAIR.Apr 17, 2004 · N421EH · Bell 412 · Tail Rotor Blades
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