Bell 206-L4

Service difficulty reports · 710

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 = '206L4'
  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 97ZZZX220Lever Assy · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH 206-010-338-003 BUSHINGS, 2 EACH NAS6605D64 BOLTS, 1 EACH 206-010-470-101 BEARING. NORMAL UNov 7, 1996 · N174AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 96ZZZX5841Blade · wornDURING NORMAL AIRCRAFT USAGE NEW YORK HELICOPTER HAS NOTED THE LEADING EDGE OF THE MAIN ROTOR BLADE IS EXPERIENCING ABNORMAL WEAR IN THE FORM OF SCALING/SPLINTERING ON A MODERATE LEVEL. NEW YORK HELICOPTER IS AWAITING RECOMMENDATIONS FROM BELL HELICOPTER TEXTOct 30, 1996 · N125NH · Bell 206L4 · Main Rotor BladesSDR 97ZZZX235Lever Assy · wornDAILY INSPECTION FOUND BEARINGS AND SPACERS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-01 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH NAS6605D64 BOLTS. NORMAL USE CAUSES PARTS TO WEAR OUT TOO SOON. WORN PARTS TT 310.3 HOURS.Oct 21, 1996 · N175AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 97ZZZX233Lever Assy · wornDAILY INSPECTION FOUND BEARINGS AND SPACERS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206010-337-001 BEARINGS, 2 EACH NAS6605D64 BOLTS. NORMAL USE CAUSES PARTS TO WEAR OUT TOO SOON. WORN PARTS TT 330.3 HOURS.Oct 21, 1996 · N173AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 97ZZZX232Lever Assy · wornDAILY INSPECTION FOUND BEARINGS AND SPACERS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH NAS6605D64 BOLTS. NORMAL USE CAUSES PARTS TO WEAR OUT TOO SOON. WORN PARTS TT 293.1 HOURS.Oct 21, 1996 · N171AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 97ZZZX2672Seal · leakingREPLACED FREE WHEELING UNIT TAIL ROTOR OUTPUT DRIVE SEAL DUE TO LEAKING OIL.Oct 11, 1996 · N696BA · Bell 206L4 · Engine/Transmission CouplingSDR HEEA968053Indicator · stuckNEEDLE STUCK ON ZERO AND WOULD NOT INDICATE. TIME SINCE REPAIR 138:20.Oct 3, 1996 · N7077B · Bell 206L4 · Engine EGT/TIT Indicating SystemSDR 96ZZZX5573Tail Boom · loose rivetsDURING 100-HOUR INSPECTION MECHANIC NOTED 9 EA RIVETS LOOSE BY THE TAIL ROTOR GEARBOX AT STATION 174.105.Sep 21, 1996 · N125NH · Bell 206L4 · Rotorcraft Tail BoomSDR 96ZZZX5513Lever Assy · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH 206-010-338-003 BUSHINGS, 2 EACH NAS6605D64 BOLTS, 1 EACH 206-010-470-101 BEARING. SUBMITTESep 17, 1996 · N177AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR CA960924022Blade · separation(CAN) SKIN SEPARATION FROM LEADING EDGE OF BOTH BLADES.Sep 16, 1996 · Bell 206L4 · Tail Rotor BladesSDR HEEA967800Stiffener · crackedSTIFFENER IS CRACKED. (CRACKED AT TOP IN BENT ARM 4 7/8 FROM TOP EDGE. REPLACED WITH SERVICEABLE STIFFENER.Sep 9, 1996 · N7077F · Bell 206L4 · Fuselage Miscellaneous StructureSDR HEEA967797Bulkhead Assy · crackedFORWARD BULKHEAD ASSY CRACKED AT 3 EACH ATTACHMENT SHIM LOCATIONS. FOUND CRACKS DURING COMPLIANCE OF T.B. 206L-94-169. ALSO FOUND SEVERAL LOOSE RIVETS ATTACHING TAIL ROTOR GEARBOX SUPPORT FITTING TO AFT END OF TAILBOOM ASSY AND SEVERAL LOOSE(WORKING) RIVETS Sep 9, 1996 · N7077B · Bell 206L4 · Fuselage Main, BulkheadSDR 97ZZZX234Blade · corrodedDURING DAILY INSPECTION FOUND BLADE SKIN CORROSION AND DELAMINATION AT BLADE TIP.Aug 28, 1996 · N174AL · Bell 206L4 · Main Rotor BladesSDR 96ZZZX5165Switch · failedPILOT REPORTED SEEING SMOKE APPEAR FROM THE AIR CONDITIONER VENTS AND BY GROUND PERSONNEL SEEING SMOKE APPEAR FROM TAILBOOM AND AIR CONDITIONER DUCT AREAS. INSPECTION OF THE AIR CONDITIONER SYSTEM REVEALED THE HIGH PRESSURE SWITCH FAILED CAUSING THE RECEIVER/Aug 22, 1996 · N123NH · Bell 206L4 · Cabin Cooling SystemSDR HEEA967676Clamp · failedDURING VISUAL CHECK OF START/GENERATOR FOUND HEAD OF "T" BOLT BROKEN OFF AND LAYING IN ENGINE PAN. CLAMP HAD REMAINED ON STARTER GEN BUT WAS UNCOUPLED. REPLACED WITH SERVICEABLE CLAMP.Aug 16, 1996 · N8094L · Bell 206L4 · Starter-GeneratorSDR 96ZZZX5512Link Idler · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH 206-010-338-003 BUSHINGS, 2 EACH NAS6605D64 BOLTS, 1 EACH 206-010-470-101 BEARING. SUBMITTEAug 15, 1996 · N175AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 96ZZZX5511Lever Assy · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH 206-010-338-003 BUSHINGS, 2 EACH NAS6605D64 BOLTS, 1 EACH 206-010-470-101 BEARING. SUBMITTEAug 15, 1996 · N175AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR HEEA967636Indicator · stuckTOT NEEDLE STUCK ON ZERO, WON'T INDICATE.Aug 8, 1996 · N62127 · Bell 206L4 · Engine EGT/TIT Indicating SystemSDR 96ZZZX3967Hub · stiffPILOT NOTED THAT WITH INCREASED RPM, TAIL ROTOR PEDALS BECAME STIFF. THE T/R BLADE FEATHERING BEARINGS WERE NOT FOUND TO BE CRACKED. TAIL ROTOR HUB ASSY WAS REMOVED AND VISUALLY INSPECTED IAW BELL 206L-4 MM. NO OBVIOUS DEFECTS HAVE BEEN NOTED. A THOROUGH TJul 23, 1996 · N123NH · Bell 206L4 · Tail Rotor HeadSDR 96ZZZX4842Drive Shaft · wornDURING DISASSEMBLY FOR OVERHAUL, FOUND WORN DRIVESHAFT SPLINES (SMALL END) AND WORN INTERNAL GEAR SPLINE. (PARTS SCRAPPED). SUSPECT IMPROPER LUBRICATION.Jul 19, 1996 · N170AL · Bell 206L4 · Engine Fuel PumpSDR CA960605006Door · cracked(CAN) DURING FLIGHT THE TWO REAR DOORS OPENED COMPLETELY. THE RIGHT REAR DOOR STARTED TO VIBRATE AND BROKE AT STATION 116 AT THE INTERIOR REINFORCEMENT.May 17, 1996 · Bell 206L4 · Passenger/Crew DoorsSDR 96ZZZX3413Bearing · failedTHE ENGINE CHIP DETECTOR LIGHT ILLUMINATED IN CRUISE FLIGHT OVER THE GULF OF MEXICO. THE PILOT LANDED THE HELICOPTER ON NEAREST OFFSHORE PLATFORM, APPROXIMATELY 7 MILES AWAY. MAINTENANCE INSPECTED THE CHIP DETECTOR PLUGS AND FOUND THE LOWER PLUG COVERED WITHMay 15, 1996 · N177AL · Bell 206L4 · Turbine Engine Reduction GearSDR HEEA967162Link Assy · rubber separateLINK ASSY RUBBER SEPARATION AT LOWER BEARING.May 8, 1996 · N62127 · Bell 206L4 · Main Rotor Transmission MountSDR 96ZZZX3162Transceiver · burned smellWHEN VHF CIRCUIT BREAKERS WERE PUSHED IN, THE FREQUENCY INDICATOR LIGHTS FLASHED ON/OFF. DURING HOVER TO THE MAINTENANCE PAD FROM THE BACK ROW, PILOT SMELLED FUMES. REMOVED VHF RADIO AND INSTALLED SERVICEABLE RADIO AND REMOVED BURNED SMELL. VISUALLY INSPECTMay 8, 1996 · N170AL · Bell 206L4 · VHF Communications SystemSDR 96ZZZX3412Fitting · crackedDURING SERVICE CHECK, NOTED FORWARD CROSSTUBE FITTING WAS CRACKED. FITTING WAS FOUND CRACKED IN THE SAME AREA AS REPORTED ON MDR SUBMITTED ON 2-7-94. THE FITTING WAS MANUFACTURED IN OCTOBER, 1992, WHICH IS DIFFERENT FROM THE PREVIOUSLY REPORTED CRACKED FITTIMay 1, 1996 · N174AL · Bell 206L4 · Main Landing Gear Strut/Axle/TruckSDR CA970513007Saddle · cracked(CAN) SKID GEAR SHIFTED LATERALLY ALLOWING SADDLE TO WEAR ON LUG ON SKID CROSS TUBE.Apr 30, 1996 · Bell 206L4 · Main Landing Gear Strut/Axle/TruckSDR 96ZZZX3019Fitting · chafedFORWARD CROSS TUBE STRAP ASSY WORN INTO RIGHT FORWARD CROSS TUBE FITTING. REPLACED FITTING PER PRODUCT SUPPORT WEAR LIMITS.Apr 30, 1996 · N108W · Bell 206L4 · Main Landing Gear Strut/Axle/TruckSDR 96ZZZX2934Seal · leakingDURING FLIGHT, THE TRANSMISSION PRESSURE CAUTION LIGHT ILLUMINATED. THE PRESSURE GAUGE INDICATED 30 PSI. DURING FINAL APPROACH, PRESSURE DROPPED TO 20 PSI AND TO 10 PSI DURING HOVER. UPON LANDING, PRESSURE RETURNED TO 25 PSI. AIRCRAFT WAS INSPECTED AND THEApr 23, 1996 · N177AL · Bell 206L4 · Turbine Engine Reduction GearSDR 96ZZZX2447Fitting · crackedDURING SERVICE CHECK, NOTED MLG FITTING WAS CRACKED. FITTING WAS FOUND CRACKED IN THE SAME AREA AS REPORTED ON MDR SUBMITTED ON 2-7-94. THE FITTING WAS MANUFACTURED IN OCTOBER, 1992, WHICH IS DIFFERENT FROM THE PREVIOUSLY REPORTED CRACKED FITTINGS.Apr 15, 1996 · N170AL · Bell 206L4 · Main Landing Gear Strut/Axle/TruckSDR 96ZZZX2192Exhaust Stack · crackedDURING A DAILY INSPECTION AT THE LAST FLIGHT OF THE DAY, THE MECHANIC NOTED THE ENGINE EXHAUST STACK WAS CRACKED. THE CRACK ORIGINATED AT THE CENTER WELDED SEAM APPROXIMATELY 2 INCHES FROM THE FLANGE ON THE FORWARD SIDE OF THE STACK. THE CRACK CONTINUED DOWNApr 11, 1996 · N123NH · Bell 206L4 · Engine Collector/Tailpipe/NozzleSDR 96ZZZX2201Link Idler · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH PN 206-010-338-001 SPACERS, 4 EACH PN 206-010-337-001 BEARINGS, 2 EACH PN 206-010-338-003 BUSHINGS, 2 EACH PN NAS6605D64 BOLTS, AND 1 EACH PN 206-010-470-101Mar 20, 1996 · N170AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 96ZZZX2200Lever Assy · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH PN 206-010-338-001 SPACERS, 4 EACH PN 206-010-337-001 BEARINGS, 2 EACH PN 206-010-338-003 BUSHINGS, 2 EACH PN NAS6605D64 BOLTS, AND 1 EACH PN 206-010-470-101Mar 20, 1996 · N170AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 96ZZZX2203Link Idler · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH PN 206-010-338-001 SPACERS, 4 EACH PN 206-010-337-001 BEARINGS, 2 EACH PN 206-010-338-003 BUSHINGS, 2 EACH PN NAS6605D64 BOLTS, AND 1 EACH PN 206-010-470-101Mar 12, 1996 · N173AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 96ZZZX2202Lever Assy · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH PN 206-010-338-001 SPACERS, 4 EACH PN 206-010-337-001 BEARINGS, 2 EACH PN 206-010-338-003 BUSHINGS, 2 EACH PN NAS6605D64 BOLTS, AND 1 EACH PN 206-010-470-101Mar 12, 1996 · N173AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 96ZZZX1592Wire Rope · brokenDURING A FUEL STOP ON A NORMAL WALK-AROUND, PILOT NOTICED SOMETHING HANGING DOWN BELOW THE CARGO HOOK. FURTHER INVESTIGATION FOUND THE CARGO HOOK EMERGENCY RELEASE CABLE BROKE COMPLETELY THROUGH 2 INCHES FROM CONNECTION ON CARGO HOOK.Mar 11, 1996 · N108W · Bell 206L4 · Cargo CompartmentsSDR 96ZZZX1810Tank Assy · wornWHILE PERFORMING A 100-HOUR INSPECTION, THE MECHANIC NOTED THE BOLTS SECURING THE ENGINE OIL TANK TO THE SUPPORT WERE FOUND WEARING INTO THE TANK FLANGE, ON THE FORWARD END OF TANK. SUBMITTER BELIEVES BOLTS SECURING THE TANK TO SUPPORT HAD WORN INTO THE FLANGFeb 14, 1996 · N123NH · Bell 206L4 · Engine Oil Storage (Airframe Furnished)SDR 96ZZZX2340Bearing · groovedAT 3,000-HOUR OVERHAUL, BEARING ROLLER FOUND TO HAVE DEEP GROOVE ON ONE ROLLER, SCRAPPED BEARING.Feb 6, 1996 · N171AL · Bell 206L4 · Engine/Transmission CouplingSDR 96ZZZX1813Bearing · pittedFOUND AT 3,000-HOUR OVERHAUL, MAST BEARING OUTER RACE THRUST AREA HAS PITTED AREA - SCRAPPED BEARING.Feb 6, 1996 · N171AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 96ZZZX2344Link Idler · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH 206-010-338-003 BUSHINGS, 2 EACH NAS6605D64 BOLTS, AND 1 EACH 206-010-470-101 BEARING. SUSPJan 29, 1996 · N175AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 96ZZZX2343Lever Assy · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH 206-010-338-003 BUSHINGS, 2 EACH NAS6605D64 BOLTS, AND 1 EACH 206-010-470-101 BEARING. SUSPJan 29, 1996 · N175AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR CA960129026Seal · leaking(CAN)SEAL LEAKING TO THE POINT WHERE OIL HAS TO BE ADDED DAILY.Jan 11, 1996 · Bell 206L4 · Tail Rotor GearboxSDR CA960129025Seal · leaking(CAN)SEAL LEAKING. OIL HAS TO BE ADDED AT THE RATE OF 1 QUART PER 30 HOURS OF OPERATION.Jan 11, 1996 · Bell 206L4 · Main Rotor GearboxSDR CA960129024Seal · leaking(CAN)SEAL LEAKING. OIL HAS TO BE ADDED DAILY.Jan 11, 1996 · Bell 206L4 · Tail Rotor GearboxSDR CA960129023Seal · leaking(CAN)SEAL LEAKING. REQUIRES OIL TO BE ADDED TO GEARBOX DAILY.Jan 11, 1996 · Bell 206L4 · Tail Rotor GearboxSDR CA960129022Seal · unseats(CAN)WHILE GREASING HEAD THE SEAL BECOME DISLODGED AND MOVE INBOARD, AND HAVE TO BE RESEATED.Jan 11, 1996 · Bell 206L4 · Main Rotor HeadSDR 96ZZZX2342Link Idler · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH 206-010-338-003 BUSHINGS, 2 EACH NAS6605D64 BOLTS, AND 1 EACH 206-010-470-101 BEARING. SUSPJan 10, 1996 · N174AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR 96ZZZX2341Lever Assy · wornDAILY INSPECTION FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH 206-010-338-003 BUSHINGS, 2 EACH NAS6605D64 BOLTS, AND 1 EACH 206-010-470-101 BEARING. SUSPJan 10, 1996 · N174AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR CA960111021Frame · cracked(CAN)CRACK FOUND ON TOP AFT RADIUS OF ANGLE P/N 206-032-308-005 ATTACHED TO STN 217.84 FRAME P/N 206-032-307-109.Jan 3, 1996 · Bell 206L4 · Fuselage Main, FrameSDR 96ZZZX300Pitch Horn · loose studDURING DAILY INSPECTION, FOUND THE PITCH LINK STUD ON THE PITCH HORN WAS LOOSE. SUSPECT CAUSE IS THE STUD WAS NOT PERMANENTLY SECURED AT THE FACTORY. ALSO, THE PITCH HORN WAS NOT PROPERLY TORQUED AT THE FACTORY CAUSING THE PITCH HORN TO BECOME LOOSE ON THE TDec 13, 1995 · N175AL · Bell 206L4 · Tail Rotor Control SystemSDR 96ZZZX281Link Idler · wornDURING DAILY INSPECTION, FOUND BUSHINGS AND BEARINGS WORN BEYOND LIMITS. PARTS REQUIRING REPLACEMENT: 4 EACH 206-010-338-001 SPACERS, 4 EACH 206-010-337-001 BEARINGS, 2 EACH 206-010-338-003 BUSHINGS, 2 EACH NAS6605D64 BOLTS, 1 EACH 206-010-470-101 BEARING. Dec 13, 1995 · N171AL · Bell 206L4 · Main Rotor Mast/Swashplate
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