Bell 412EP

Service difficulty reports · 181

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 = '412EP'
  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 2025FA0000642Static Inverter · overheatedTHE CREW CAME OUT FOR A TRAINING FLIGHT, STARTED THE AIRCRAFT JUST FINE AND IDLED ON DECK FOR A FEW MINUTES. UPON TAKE OFF THE #1 INVERTER SWITCH TURNED ITSELF OFF AND SUBSEQUENTLY LOST AUTOPILOT. WHEN THE INVERTER SWITCH WAS SWITCHED BACK TO ON THAT IS WHEN TSep 12, 2025 · N282SD · Bell 412EP · AC InverterSDR 2023FA0000361Fitting · shearedDURING CRUISE FLIGHT EXPERIENCED A TOTAL LOSS OF ALL MAIN ROTOR TRANSMISSION FLUID DUE TO FAILURE OF 1 ELBOW FITTING (P/N: AS1040W0404). EMERGENCY LANDING PERFORMED WITH NO DAMAGE TO AIRCRAFT OR INJURY TO ANY OCCUPANTS. DURING CONVERSATIONS WITH THE OEM (BELL Mar 27, 2023 · N412VC · Bell 412EP · Main Rotor GearboxSDR RV1R2020010800019Elastomer · failedFAILED ELASTOMER FOUND DURING REMOVAL FOR MAST SEAL REPLACEMENT. THIS PART CAN ONLY BE INSPECTED WITH MR HUB DISASSEMBLED AND THE ONLY REQUIREMENT FOR THIS INSPECTION IS LOCATED IN THE 2500 HOUR AIRFRAME INSPECTION. THE AIRCRAFT IN QUESTION ONLY HAS 1800 HOUSep 30, 2019 · N962KW · Bell 412EP · Main Rotor HeadSDR RV1R20191002466Bearing · separatedCOMPLETE SEPERATION OF THE PIVOT BEARING ELASTOMER FROM THE BASE. NOT VISABLE WITH THE BLADES INSTALLED, TOTAL FAIURE HAD NOT TAKEN PLACE 7.0 HOURS AGO.THIS ITEM HAS A FIRST INSPECTION INTERVAL AT 2500 HOURS, AIRCRAFT ONLY HAS 1800 BUT IS 13 + YEARS OLD RECOMESep 30, 2019 · N962KW · Bell 412EP · Main Rotor HeadSDR 2019FA0000239Bellcrank · looseTHE HELICOPTER EXPERIENCED A TORQUE AND RPM FLUCTUATION SHORTLY AFTER TAKE-OFF. A FAULTY AUTOMATIC FUEL CONTROL UNIT WAS REPLACED. DURING THE ENGINE RIGGING PROCESS, EXCESSIVE PLAY WAS NOTED IN THE DROOP COMPENSATOR ROD ASSEMBLY. FURTHER INSPECTION REVEALEDAug 1, 2019 · N223JC · Bell 412EP · Aircraft Fuel Filter/StrainerSDR CA190604022Cable · out of rig(CAN) ON INSPECTION, FACTORY LEAD SEAL BROKEN AND LIFE RAFT ACTUATING CABLES WERE FOUND TO BE OUT OF RIG I.A.W. MANUFACTURES ICA DIMENSIONS (PARA 4.4.6 & 4.4.7) AT THE MULTI CABLE BOX. EXCESSIVE FREE PLAY FOUND IN CONSOLE TO BOX CABLE WHICH WOULD HAVE PREVENTEJun 4, 2019 · Bell 412EP · Life RaftSDR CA190510007Cable · out of rig(CAN) AFTER A SUCCESSFUL FLOAT DEPLOYMENT AND INFLATION FROM COCKPIT DURING THE 36 MONTH INSPECTION, THE LIFE RAFT DEPLOYMENT HANDLE WAS CYCLED NUMEROUS TIMES BUT FAILED TO DEPLOY/INFLATE THE LIFE RAFTS. LIFE RAFTS WERE SUCCESSFULLY DEPLOYED USING THE EXTERIORMay 9, 2019 · Bell 412EP · Emergency Flotation SectionSDR 2018FA0000303Bevel Gear · wornDURING ROUTINE MAINTENANCE / MODIFICATION IT WAS VISUALLY NOTED THAT THERE WAS AN ABNORMAL WEAR PATTERN ON THE SPIRAL BEVEL GEAR INSIDE THE MAIN ROTOR TRANSMISSION ASSY P/N 412-040-007-101 S/N BH282157. TECHNICAL SUPPORT WAS CONTACTED, AND VERIFIED THE ABNORMAJul 25, 2018 · N549RQ · Bell 412EP · Main Rotor GearboxSDR CA180510007Wire · chafed(CAN) PART NUMBERS: D38999/26WA98SN AND 30-269-1P09N05 WIRING THROUGH EMI CONNECTOR CONTACTS AND CHAFES ON BACKSHELL 90 DEGREE BEND AND SHORTS TO GROUND GIVING ERRONEOUS CREW ALERTING SYSTEM MESSAGES. IN THIS CASE IT WAS ON THE TRANSMISSION FULL FLOW DEBRIS MMay 10, 2018 · Bell 412EP · Main Rotor System WiringSDR 2017FA0000222Windscreen · crackedEN ROUTE TO HOMEBASE, PILOT NOTICED WINDSCREEN WAS CRACKEDMay 30, 2017 · N241FA · Bell 412EP · Windshield/Door Rain/Ice RemovalSDR QMLA2016072516085Windshield · crackedON NR 1 ENGINE START UP THE CO-PILOT WINDSCREEN CRACKED APPROX. 28" ALONG THE LOWER EDGE. THE PILOT SHUT DOWN THE ENGINE AND WROTE UP THE DISCREPANCY. MECHANICS REPORTED THE DISCREPANCY TO MCAS AND THE AIR CRAFT WAS TAKEN OOS. A REQUEST FOR A SPECIAL FERRY PERJul 25, 2016 · N87AM · Bell 412EP · Flight Compartment WindowsSDR CA150911005Engine · power loss(CAN) WHILE ON APPROACH THE ACFT LOST POWER FROM NR 2ENGINE. CREW MADE A EMERGENCY CALL OUT AND TOOK APPROPRIATE EMERGENCY ACTION TO STABILIZE THE FLIGHT FOR SINGLE ENGINE OPERATIONS AND DIVERTED. WHILE ENROUTE, THE CREW SUCCESSFULLY RESTARTED NR 2 ENGINE UTISep 2, 2015 · Bell 412EP · Engine (Turbine/Turboprop)SDR CA150727014Clutch · slipped(CAN) ON HOIST OPERATION, THE RESCUE SPECIALIST REPORTED A SLIPPAGE FROM THE HOIST CABLE WHILE DESCENDING ON THE SITE. THE UNIT IS NOT INCLUDED IN THE LIST OF AFFECTED HOISTS CALLED ASB 44301-10-15 AND BY AD 2013-06-51. THE HOIST HAS ACCUMULATED A TOTAL OF 15Jul 24, 2015 · Bell 412EP · Emergency EquipmentSDR CA150709001Bearing · separated(CAN) THE QUALITY OF RIDE IN THE HELICOPTER DEGRADED AND THE HUMS SYSTEM ALSO HAD INDICATED AN ISSUE. DURING THE INVESTIGATION, IT WAS FOUND THAT THE PIVOT BEARING HAD SEPARATED FROM THE SPINDLE ASSY. THE SPINDLE ASSY WAS REMOVED AND AN O/H ASSY INSTALLED. SJun 26, 2015 · Bell 412EP · Main Rotor HeadSDR CA150602010Engine · overtemp(CAN) REPORTED THAT DURING A TRAINING FLIGHT, ENGINE NR 1 OVERTEMPED WHEN GOVERNOR WAS SWITCHED FROM AUTO TO MAN WITH N1 AT 70 PERCENT. GROUND INSPECTION PERFORMED AND DEBRIS FOUND AT ENGINE NR 1 EXHAUST AREA WITH DENTS NOTED IN THE EXHAUST DUCTS, FIELD SERVIMay 16, 2015 · Bell 412EP · Engine (Turbine/Turboprop)SDR CA141202002Engine · making metal(CAN) BEFORE TAKEOFF, PILOT REPORTED THAT THE CHIP DETECTOR CAUTION LIGHT WAS ILLUMINATED, THUS THE PILOT PROCEEDED TO SHUTDOWN THE ENGINE AND THE FLIGHT WAS ABORTED. METAL FLAKES FOUND ON THE CHIP DETECTOR WERE SENT TO THE LAB FOR ANALYSIS.Nov 3, 2014 · Bell 412EP · Engine (Turbine/Turboprop)SDR 9EKA20141030012Oil Cooler · crackedDURING 1000 HOUR INSPECTION OF OIL COOLERS MULTIPLE CRACKS ON VANE WELDS WERE FOUND.Oct 29, 2014 · N414EV · Bell 412EP · Engine Fuel/Oil CoolerSDR CA141003002Wire · smoke(CAN) WHEN STARTING ENGINE NR 1 WITH BATTERY POWER IN AUTO MODE, AND UPON REACHING 61 PERCENT NG, ELECTRICAL SMOKE WAS NOTICED COMING OUT FROM UNDER THE COPILOTS INSTRUMENT PANEL. PRIOR TO REACHING 61 PERCENT NG, A NOTICEABLE TICKING/PULSING NOISE COULD BE HEOct 2, 2014 · Bell 412EP · Electrical Power System WiringSDR CA140908028Yoke · unserviceable(CAN) DURING THE DAILY INSPECTION IT WAS NOTICED THAT 1 TAIL ROTOR YOKE FEATHERING BEARING OUTER RACE STAKE HAD FAILED. UPON FURTHER INVESTIGATION ALL 4 TAIL ROTOR YOKE FEATHERING BEARING OUTER RACE STAKES HAD FAILED.Sep 4, 2014 · Bell 412EP · Tail Rotor HeadSDR CA140813006Blade · delaminated(CAN) MAIN ROTOR BLADE DELAMINATION FOUND DURING INSPECTION. LOCATION WAS INBD OF THE INBD TRIM TAB. THE MAIN ROTOR BLADE IS ON CONDITION. BLADE REPLACED AND ACFT RETURNED TO SERVICE.Aug 2, 2014 · Bell 412EP · Main Rotor BladesSDR CA131118023Clevis · cracked(CAN) DURING 2500HR INSPECTION OF A THE MAIN ROTOR HEAD, ONE DROOP RESTRAINT CLEVIS WAS FOUND TO HAVE A LENGTHWISE CRACK RUNNING ENTIRE LENGTH OF CLEVIS.Nov 18, 2013 · Bell 412EP · Main Rotor HeadSDR CA131118006Gear · failed(CAN) THE ACFT RETURNED TO BASE WITHOUT COMPLETING ITS MISSION DUE TO ENGINE NR 2 CHIP WARNING. THE AFFECTED POWER SECTION WAS APPARENTLY SHUTDOWN. POST FLIGHT INSPECTION REVEALED SIGNIFICANT METAL DEBRIS IN THE NR 2 POWER SECTION RGB CHIP DETECTOR. THE RGB Nov 5, 2013 · Bell 412EP · Turbine Engine Reduction GearSDR CA130701009Oil System · low pressure(CAN) THE PILOT SHUTDOWN THE ENGINE NR 1 DUE TO OIL PRESSURE LOST.Jun 14, 2013 · Bell 412EP · Engine Oil System (Airframe Furnished)SDR CA130416012Engine · shutdown(CAN) IN PREPARATION OF THE ENGINE SHUTDOWN, ENGINES THROTTLES WERE BROUGHT DOWN TO FLIGHT IDLE, APPROXIMATELY 80 PERCENT NR, ALLOWING FOR COOLING PERIOD. ALL OF A SUDDEN AND COMPLETELY UNEXPECTED, THERE WAS AN OVERSPEED OF THE ENGINE NP 1 NR AND N2 OF UP TOApr 4, 2013 · Bell 412EP · Engine (Turbine/Turboprop)SDR CA121022005Line · broken(CAN) THIS HELICOPTER HAS EXPERIENCED ITS SECOND BROKEN P3 AIR LINE, IN 600 HOURS ON ENGINE NR 1. THE PREVIOUS EVENT WAS WITH PS TH0727 IN THE SAME POSITION ON THE ACFT.Sep 27, 2012 · Bell 412EP · Engine Bleed Air SystemSDR ALGA2012061804Support Case · crackedCRACKED SUPPORT CASE BEYOND LIMITS.Jun 18, 2012 · Bell 412EP · Main Rotor GearboxSDR ALGA2012061406Crosstube · corrodedCROSSTUBE, CORROSION BEYOND LIMITS.Jun 14, 2012 · N9YONE · Bell 412EP · Main Landing GearSDR ALGA2012061307Crosstube · corrodedCROSSTUBE, CORROSION BEYOND LIMITS.Jun 13, 2012 · N9YONE · Bell 412EP · Main Landing GearSDR ALGA2012052216Crosstube · corrodedCROSSTUBE HAS CORROSION BEYOND LIMITS IN ZONE 2.May 22, 2012 · N9YBRS · Bell 412EP · Main Landing GearSDR ALGA2012052215Crosstube · corrodedCROSSTUBE HAS CORROSION BEYOND REPAIR LIMITS IN ZONE 1 & 2.May 22, 2012 · N9YBRS · Bell 412EP · Main Landing GearSDR ALGA2012051401Crosstube · corrodedCROSSTUBE CORRODED BEYOND REPAIRABLE LIMITS.May 14, 2012 · N9YBRS · Bell 412EP · Main Landing GearSDR ALGA2012051103Blower · wornOIL COOLER BLOWER WORN, REPLACED ONE BEARING, PN 47-134-2 AND 1 EA BEARING, PN 47-146-1 BOTH DUE TO WEAR BEYOND REPAIRABLE LIMITS. REPLACED 1 EA GUIDE VANE PN 2660-1534-01 DUE TO CORROSION BEYOND LIMITS.May 11, 2012 · N9YBRS · Bell 412EP · Engine Oil CoolerSDR ALGA2012050202Skin · corrodedLOWER SKIN CORRODED BEYOND LIMITS AT STA 69.00.May 2, 2012 · Bell 412EP · Aerodynamic FairingsSDR ALGA2012050201Web · corrodedBOTTOM FLANGE ON WEB CORRODED BEYOND LIMITS FROM LBL 12.68 TO RBL12.68 ST. 69.00.May 2, 2012 · N9YBRS · Bell 412EP · Fuselage Miscellaneous StructureSDR ALGA2012041801Shaft · shearedOIL COOLER BLOWER HAS A SHEARED SHAFT.Apr 18, 2012 · N9YBCO · Bell 412EP · Engine Oil CoolerSDR ALGA2012032602Panel · corrodedPANEL HAS CORROSION AND SEPARATION BEYOND LIMITS.Mar 26, 2012 · N9YTNT · Bell 412EP · Fuselage Main, Plate/SkinSDR ALGA2012321000004Bearing · wornMAIN ROTOR DRIVE LINK BEARING WORN BEYOND LIMITS.Mar 21, 2012 · N9YTNT · Bell 412EP · Main Rotor SystemSDR ALGA2012032100003Bearing · wornMAIN ROTOR DRIVE LINK BEARING WORN BEYOND LIMITS.Mar 21, 2012 · N9YBCO · Bell 412EP · Main Rotor SystemSDR ALGA2012032100002Bearing · wornMAIN ROTOR DRIVE LINK BEARING WORN BEYOND LIMITS.Mar 21, 2012 · N9YBCO · Bell 412EP · Main Rotor SystemSDR ALGA2012032100001Bearing · wornMAIN ROTOR DRIVE LINK BEARING WORN BEYOND LIMITS.Mar 21, 2012 · N9YBOB · Bell 412EP · Main Rotor SystemSDR ALGA201203121202Skin · corrodedDOOR HAS CORROSION BEYOND REPAIRABLE LIMITS.Mar 12, 2012 · N9YTNT · Bell 412EP · Passenger/Crew DoorsSDR ALGA3121201Skin · corrodedCREW DOOR SKIN HAS CORROSION BEYOND REPAIR LIMITS.Mar 12, 2012 · N9YTNT · Bell 412EP · Passenger/Crew DoorsSDR ALGA20122281205Sleeve · corrodedTRANSMISSION SLEEVE CORRODED BEYOND LIMITS.Feb 28, 2012 · N9YBOB · Bell 412EP · Main Rotor GearboxSDR ALGA20122281204Case · corrodedTRANSMISSION CASE CORRODED BEYOND LIMITS.Feb 28, 2012 · N9YBOB · Bell 412EP · Main Rotor GearboxSDR ALGA20122281203Cover · corrodedTRANSMISSION CORRODED BEYOND LIMITS.Feb 28, 2012 · N9YBOB · Bell 412EP · Main Rotor GearboxSDR ALGA20122281202Case · corrodedCORRODED BEYOND LIMITS.Feb 28, 2012 · N9YBOB · Bell 412EP · Main Rotor GearboxSDR ALGA20122281201Support Case · corrodedTRANSMISSION SUPPORT CASE CORRODED BEYOND LIMITS.Feb 28, 2012 · N9YBOB · Bell 412EP · Main Rotor Transmission MountSDR ALGA20122271211Panel · corrodedPANEL ON TAILBOOM CORRODED BEYOND LIMITSFeb 27, 2012 · N9YTNT · Bell 412EP · Rotorcraft Tail BoomSDR ALGA20122271210Support · crackedSUPPORT CRACKED BEYOND LIMITS.Feb 27, 2012 · N9YTNT · Bell 412EP · Fuselage Miscellaneous StructureSDR ALGA20122271209Structure · separatedENGINE DECK STRUCTURE HAS SEPARATION BEYOND LIMITS.Feb 27, 2012 · N9YTNT · Bell 412EP · Fuselage Main, Structure
Back to Bell 412EP