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 CA080611002Bearing Race · fractured(CAN) THE PUSH-PULL CONTROL ASSY CENTER RACE FRACTURED AS A RESULT OF FATIQUE. THE FRACTURE OCCURED NEAR WHERE THE ASSY WAS LOCATED IN AN INSTALLATION-INDUCED BEND RADIUS.Mar 18, 2008 · Bell 206L4 · Main Rotor HeadSDR CA080122010Bearing · chafed(CAN) DURING A PHASE INSP, MECHANIC FOUND A CHAFED AREA ON TOP OF THE COLLECTIVE LEVER BEARING EAR P/N 206-010-447-109. FURTHER INSP REVEALED CHAFING AT BOTTOM OF BOTH SWASHPLATE ROTATING RING BEARING EARS. CHAFED AREAS APPROX 0.020-0.040 INCH DEPTH. MECHANICJan 11, 2008 · Bell 206L4 · Main Rotor Mast/SwashplateSDR CA071023004Nut · failed(CAN) WHILE INVESTIGATION MAST BEARING PLAY, UNABLE TO REMOVE NUT (BEARING TORQUE). MAST ASSEMBLY SENT TO MFG FOR INVESTIGATION. NEW MAST ASSEMBLY PROVIDED BY MFG. (TC NR 20071023004)Oct 22, 2007 · Bell 206L4 · Main Rotor Mast/SwashplateSDR CA071023002Nut · loose(CAN) WHILE INVESTIGATING MAST BEARING PLAY. UNABLE TO REMOVE NUT (BEARING TORQUED). MAST ASSY SENT TO MFG FOR INVESTIGATION. NEW MAST ASSY PROVIDED BY MFG (TC NR 20071023002).Oct 22, 2007 · Bell 206L4 · Main Rotor Mast/SwashplateSDR CA071001002Tube · leaking(CAN) HELICOPTER DEVELOPED FUEL LEAK SITTING IN HANGER. BONDING MATERIAL BETWEEN ALUMINUM FLANGE AND RUBBER TUBE IS ALMOST NON-EXISTENT. THE RUBBER ALSO SEEMS TO HAVE SWELLED. (TC NR 20071001002)Jul 12, 2007 · Bell 206L4 · Aircraft Fuel Distribution SystemSDR YTRR116570Governor · fluctuatesAIRCRAFT EXPERIENCED TORQUE FLUCTUATIONS OF 10 PERCENT TO 15 PERCENT DURING CRUISE FLIGHT.Jul 11, 2007 · N852RL · Bell 206L4 · Turbine GovernorSDR HEER117209Fitting · crackedUPPER LT TAILBOOM ATTACH FITTING CRACKED. REPLACED FITTING.Jul 6, 2007 · N266P · Bell 206L4 · Rotorcraft Tail BoomSDR CA070626001Hose · debonded(CAN) FUEL HOSE ASSY DEBONDED CAUSING FUEL LEAK FROM FWD TANKS. THE RUBBER BELLOW PART OF THE TUBE ASSEMBLY DEBONDED FROM THE ALUMINUM TUBING. THIS HOSE ASSEMBLY IS LOCATED ON THE LT SIDE FWD FUEL TANK. REFER TO HELICOPTER IPB FIGURE 28-3 ITEM NR 57. (TC NR 2Jun 22, 2007 · Bell 206L4 · Aircraft Fuel Distribution SystemSDR YTRR114335Attach Fitting · crackedON PREFLIGHT PILOT FOUND TAILBOOM MOVEMENT EXCESSIVE. ON INSPECTION FOUND TAILBOOM ATTACH FITTING CRACKED.Mar 2, 2007 · N410RL · Bell 206L4 · Rotorcraft Tail BoomSDR CA070216001Housing · damaged(CAN) BYPASS INDICATOR BORE MISSING ONE 0.062 INCH DIA OIL PASSAGE AT BOTTOM OF BORE BREAKING THROUGH THE SMALLEST RECESSED BORE DIAMETER OF .375 INCH. PICTURE OF PART WITH THE MISSING HOLE ATTACHED. (TC NR 20070216001)Feb 14, 2007 · Bell 206L4 · Aircraft Fuel Distribution SystemSDR CA070126006Tail Boom · damaged(CAN) UPON CHANGING FORMER P/N 206-020-113-093 ON VERTICAL FIN, DAMAGE/GOUGING DETECTED ON THE IB FIN SKIN WITHIN CLOSE PROXIMITY TO VERTICAL FIN MOUNTING HOLE. IT IS SUSPECTED THAT WHEN ORIGINALLY FITTING THE COWLS THAT THE FORMER WAS TRIMMED AND THAT AT THISJan 21, 2007 · Bell 206L4 · Rotorcraft Tail BoomSDR CA061208004Pump · lack of lube(CAN) GREASE FOUND WASHED OUT CAUSING PREMATURE WEAR OF DRIVE SPLINES LEADING TO HYDRAULIC SYSTEM FAILURE. 198.3 HRS SINCE PREVIOUS LUBRICATION. (TC NR 20061208004)Dec 5, 2006 · Bell 206L4 · Hydraulic Pump (Electric/Engine), MainSDR CA061208003Tach Generator · worn(CAN) GREASE FOUND WASHED OUT CAUSING PREMATURE WEAR OF DRIVE SPLINES LEADING TO HYDRAULIC SYSTEM FAILURE. 298.7 HRS SINCE PREVIOUS LUBRICATION. (TC NR 20061208003)Dec 5, 2006 · Bell 206L4 · Rotor Drive Indicating SystemSDR CA061109006Skin · cracked(CAN) CRACK FOUND IN SKIN UNDER FWD BEARING OIL COOLER SUPPORT RT STA 192.00 BUTT 4.0. REPAIR WAS MADE IAW BHT-206-SRM-4-2 (TC NR 20061109006)Nov 9, 2006 · Bell 206L4 · Fuselage Main, Plate/SkinSDR CA061011012Gland Nut · cracked(CAN) DURING THE FIRST OVERHAUL OF THREE SERVO ACTUATORS 2 WERE FOUND TO HAVE CRACKS ON THE GLAND THAT RETAINS THE PISTON SEAL. BOTH SERVO ACTUATOR GLAND ASSEMBLIES WERE CRACKED IN THE SAME AREA. (TC NR 20061011012)Oct 10, 2006 · Bell 206L4 · Rotorcraft Servo SystemSDR ALGR111218Panel · crackedROOF PANEL CRACKED 2 PLACES ON LT AFT TRANSMISSION MOUNT.Sep 25, 2006 · N414LV · Bell 206L4 · Fuselage Main, Plate/SkinSDR ALGR111208Panel · crackedROOF PANEL CRACKED APPROX. 1.6.Sep 9, 2006 · N76AL · Bell 206L4 · Fuselage Main, Plate/SkinSDR ALGR111207Panel · crackedROOF PANEL CRACKED APPROX 6.3.Aug 26, 2006 · N267AL · Bell 206L4 · Fuselage Main, Plate/SkinSDR ALGR110830Coupling · mismanufacturedON INSPECTION OF FLEX COUPLING, FOUND PART TO BE MISMANUFACTURED ON END FACE SPLINES. REPLACED PART W/SERVICEABLE PART.Aug 18, 2006 · N275AL · Bell 206L4 · Main Rotor GearboxSDR YTRR109168Gearbox · crackedDURING ROUTINE 100-HOUR AIRFRAME INSPECTION, FOUND TAIL ROTOR GEARBOX CASTING CRACKED.May 4, 2006 · N410RL · Bell 206L4 · Tail Rotor GearboxSDR ALG2006F00037Relay · failedIN LEVEL FLIGHT, BATTERY RELAY ILLUMINATED. MAINTENANCE ACTION: REPLACED RELAY. (K)Mar 4, 2006 · N280AL · Bell 206L4 · DC Generating SystemSDR YTRR108175Indicator · failedENGINE OIL TEMPERATURE INDICATOR FAILED IN-FLIGHT.Feb 14, 2006 · N317RL · Bell 206L4 · Engine Oil TemperatureSDR ALG2006F00007Volt Regulator · malfunctionedGENERATOR FAIL LIGHT ILLUMINATED ON TAKEOFF. ATTEMPTED RESET AND SMELLED ACRID BURNING SMELL. LANDED AIRCRAFT AT THE NEAREST SAFEST PLACE. REMOVED AND REPLACED VOLTAGE REGULATOR WITH SERVICEABLE UNIT. ALL IAW MM. (K)Jan 24, 2006 · N173AL · Bell 206L4 · DC RegulatorSDR CA051220003Skin · damagedDURING A SCHEDULED DESTRUCTIVE TEST, FOUND SOME STABILIZER SKINS DAMAGED WITH TOOL MARKS AT SOME INSERT HOLES.Dec 16, 2005 · Bell 206L4 · Vertical Stabilizer, Plate/SkinSDR ALG2005F00122Actuator · out of adjustON TAKEOFF, RPM ROSE TO 104 PERCENT, THE PILOT WAS UNABLE TO BEEP DOWN TO NORMAL RANGE, RETURNED TO DEPARTURE. THE MECHANIC FOUND THE LINEAR ACTUATOR RANGE WAS SET TOO HIGH, HE ADJUSTED THE BEEP RANGE TO WITHIN THE LIMITS AND THE AC WAS RETURNED TO SERVICE. Dec 6, 2005 · N175AL · Bell 206L4 · Engine RPM Indicating SystemSDR ALG2005F00102Starter Gen · failedSTARTER/ GENERATOR FAILED ENROUTE TO WC 586, RETURNED TO BASE. REMOVED AND REPLACED STARTER/GENERATOR. (K)Nov 28, 2005 · N271AL · Bell 206L4 · Starter-GeneratorSDR ALG2005F00101Starter Gen · failedSTARTER/GENERATOR FAILED ENROUTE TO WC 586. RETURNED TO BASE. REMOVED AND REPLACED STARTER/GENERATOR. (K)Nov 28, 2005 · N271AL · Bell 206L4 · Starter-GeneratorSDR ALG2005F00106Warning System · false indicationDURING START TOT PEAKED AT 770 FOR ONE SECOND. MAINTENANCE WAS NOTIFIED. PERFORMED INSPECTION OF TOT INSTRUMENT IAW MM AND FOUND INSTRUMENT SERVICEABLE. PERFORMED HOT END INSPECTION IAW MM AND FOUND NO DEFECTS. REINSTALLED SAME AS REMOVED AND RELEASED AIRCNov 19, 2005 · N170A1 · Bell 206L4 · Engine Indicating SystemSDR ALG2005F00108Engine · noisyLOUD HOWLING NOISE AT FLIGHT IDLE FROM THE ENGINE TRANSMISSION AREA. REPLACED ENGINE ASSEMBLY. (K)Nov 15, 2005 · N176AL · Bell 206L4 · Engine (Turbine/Turboprop)SDR ALG2005F00117Starter Gen · noisyPILOT HEARD LOUD NOISE FROM THE ENGINE COMPARTMENT. REMOVED STARTER GEN AND INSTALLED A SERVICEABLE TSO GENERATOR. RAN AC FOR 30 MINUTES AT GROUND IDLE AND 100 PERCENT RPM FOR 10 MINUTES WITH NO NOISE OCCURRING. REMOVED AND INSPECTED ENGINE CHIP PLUGS, CHECNov 14, 2005 · N176AL · Bell 206L4 · Starter-GeneratorSDR ALG2005F00089Engine · making metalIN FLIGHT, ENGINE CHIP LIGHT ILLUMINATED. AFTER LANDING, NOTIFIED MAINTENANCE. THE ENGINE CHIP PLUG WAS FOUND TO HAVE METAL FLAKES. REMOVED AND REPLACED ENGINE WITH SERVICEABLE UNIT, IAW MM. (K)Oct 30, 2005 · N272AL · Bell 206L4 · Engine (Turbine/Turboprop)SDR ALG2005F00079Caliper · looseDURING DAILY INSPECTION THE MECHANIC FOUND ROTOR BRAKE BOLTS LOOSE AND A PAD WAS MISSING, REMOVED AND REPLACED BOTH CALIPERS WITH SERVICEABLE SET AND THE AC WAS RETURNED TO SERVICE. (K)Oct 15, 2005 · N265AL · Bell 206L4 · Main Rotor BrakeSDR ALG2005F00083Blade · damagedDURING THE DAILY MAINTENANCE INSPECTION, IT WAS DETERMINED THE TAIL ROTOR BLADE TIP WAS DAMAGED BY STRIKING AN UNDETERMINED OBJECT. COMPLIED WITH THE CONDITIONAL INSPECTION, 5-28 SUDDEN STOPPAGE/ACCELERATION-TAIL ROTOR. (K)Oct 6, 2005 · N275AL · Bell 206L4 · Tail Rotor BladesSDR CA050916004Filter · improper part(CAN) A PHYSICAL DIFFERENCE WAS NOTICED ON FILTERS 50-075-1. A SCREEN HOLE PATTERN WAS FOUND TO BE OUT OF SPECIFICATION. ATTACHED PICTURE SHOWING DIFFERENCES BETWEEN ACCEPTABLE AND NON-CONFORMING PARTS.Sep 14, 2005 · Bell 206L4 · Main Rotor GearboxSDR ALG2005F00066Bolt · defectiveDURING MAINTENANCE SERVICE CHECK, THE LT ROTOR BRAKE CALIPER WAS FOUND TO BE DEFECTIVE. THE FOLLOWING ITEMS WERE REMOVED AND REPLACED WITH SERVICEABLE COMPONENTS: ROTOR BRAKE DISK, BOLTS AND 2 ROTOR BRAKE CALIPERS. IAW MM. (K)Aug 21, 2005 · N265AL · Bell 206L4 · Main Rotor BrakeSDR ALGA105863Bearing · failedTRANSMISSION ASSY MAKING METAL, DISASSEMBLED AND FOUND DUPLEX BEARING BREAKING DOWN. REMOVED AND REPLACED DUPLEX BEARING.Aug 20, 2005 · N175AL · Bell 206L4 · Main Rotor GearboxSDR ALG2005F00063Transmission · failedTRANSMISSION CHIP LIGHT ILLUMINATED IN HOVER. MAINTENANCE REMOVED TRANSMISSION, MAST, AND OIL COOLER. A SERVICEABLE TRANSMISSION, MAST AND OIL COOLER WERE INSTALLED. FLUSHED TRANSMISSION OIL SYSTEM. IAW MM. GROUND AND LEAK CHECK, OK. (K)Aug 19, 2005 · N175AL · Bell 206L4 · Main Rotor GearboxSDR CA060322005Spline · wornTHE ENGINE LOST POWER BECAUSE THE ENGINE DRIVEN FUEL PUMP FAILED. THE CAUSE OF THE PUMP FAILURE WAS DISENGAGEMENT OF THE DRIVE SHAFT SPLINES FROM THE DRIVER GEAR SPLINES DUE TO EXCESSIVE WEAR.Aug 10, 2005 · Bell 206L4 · Engine Fuel PumpSDR ALG2005F00041Engine · oil consumptionDURING HOT REFUELING AT BASE, THE PILOT WAS INFORMED THAT SMOKE COMING FROM THE EXHAUST STACK, HE SHUT THE AIRCRAFT DOWN. POST INSPECTION REVEALED THAT ENGINE OIL LEVEL WAS LOW (TWO LEVEL MARKS). THE MECHANIC REMOVED AND REPLACED THE ENGINE ASSY AND THE AIRCJul 14, 2005 · N180AL · Bell 206L4 · Turbine Engine Oil SystemSDR ALG2005F00042Igniter · inoperativeDURING START, THE ENGINE FLAMED OUT. SECOND ATTEMPT WAS UNSUCCESSFUL. UPON INSPECTION, THE MECHANIC REMOVED AND REPLACED THE IGNITER PLUG AND THE AC WAS RETURNED TO SERVICE. (K)Jul 11, 2005 · N188AL · Bell 206L4 · Spark Plug/IgniterSDR CA050720005Blade · delaminatedAFTER DISCUSSION WITH A FSR FROM BHTC, LEARNED THAT THE TAIL ROTOR ON THIS AIRCRAFT HAD BEEN DAMAGED IN 2004. THE TECHNICAL LOG OF THE AIRCRAFT DID NOT DEMONSTRATE THAT THE PROPER INSPECTION WAS CARRIED OUT AS PER MM CHAP 5-28. BHTC CONFIRMED THAT THE PREVIOJul 6, 2005 · Bell 206L4 · Tail Rotor BladesSDR ALGA104359Sleeve · wornBEARING AXIAL PLAY BEYOND MAX. INSTALLED NEW BEARINGS AND SLEEVES BY O/H SHOPMay 24, 2005 · N176AL · Bell 206L4 · Tail Rotor BladesSDR ALGA104358Bearing · wornBEARING AXIAL PLAY BEYOND MAX. INSTALLED NEW BEARINGS AND SLEEVES BY O/H SHOP.May 24, 2005 · N176AL · Bell 206L4 · Tail Rotor BladesSDR ALGA104360Bearing · wornBEARING AXIAL PLAY BEYOND MAX. INSTALLED NEW BEARINGS AND SLEEVES BY O/H SHOP.May 1, 2005 · N176AL · Bell 206L4 · Tail Rotor BladesSDR ALGA104357Sleeve · wornBEARING AXIAL PLAY BEYOND MAX. INSTALLED NEW BEARINGS AND SLEEVES BY O/H SHOP.May 1, 2005 · N176AL · Bell 206L4 · Tail Rotor BladesSDR 2005F00049Engine · malfunctionedDURING TAKEOFF, WITH POWER ABOVE 80 PERCENT TORQUE AIRCRAFT BEGINS VIBRATIONS INCREASING TO SEVERE WITH OSCILLATION BETWEEN 20-30 PERCENT ON TORQUE GAUGE. MAINTENANCE REMOVED AND REPLACED ENGINE ASSY WITH SERVICABLE SERIAL NUMBER CAE-890158. WORK DONE IAW BEJan 21, 2005 · N69AL · Bell 206L4 · Engine (Turbine/Turboprop)SDR CA050125002Indicator · inoperative(CAN) AFTER THE AIRCRAFT WAS COLD SOAKED FOR OVER AN HOUR, THE GAGE RESPONSE WAS VERY SLOW WHILE THE ENGINE OIL TEMP WAS ALLOWED TO STABALIZE AT 60 DEG.Jan 21, 2005 · Bell 206L4 · Engine BMEP/Torque IndicatingSDR 2005FA0000377Fuel Cell · damagedDURING A SCHEDUALED 12 MONTH FUEL SYSTEM INSPECTION IAW MM, THE DEFECT WAS NOTED ON A CUSTOMERS AIRCRAFT. THE BOTTOM INSIDE OF THE AFT FUEL CELL WAS BLISTERED WITH .2500 INCH BLISTER IN DIAMETER, SPACED FROM .5000 INCH TO .2500 INCH APART. THE BLISTERS CONTIJan 6, 2005 · N206GH · Bell 206L4 · Fuel StorageSDR ALG2005F00002Filter · dirtyWHILE LIFTING UP TO A HOVER TO DEPART, N2 RPM BLED OFF TO BELOW 90 PERCENT AND WOULD RECOVER, THROTTLE WAS FULL OPEN AND MAX BEEP WOULD NOT INCREASE THE RPM. MAINTENANCE REMOVED THE P/C, CLEANED AND DID A SYSTEM AIR LEAK CHECK. REINSTALLED SAME P/C FILTER ANDec 4, 2004 · N269AL · Bell 206L4 · Engine Fuel and ControlSDR ALGA098856Meter · spalledMETAL ON BOTH PLUGS, FOUND TORQUE METER AFT BEARING BREAKING DOWN, HEAVY SPALLING OUTER EDGES OF ROLLERS AND INNER RACE. REPLACED BEARING AND REPAIRED GEAR BOX.Nov 13, 2004 · N5NBFH · Bell 206L4 · Engine (Turbine/Turboprop)
Back to Bell 206-L4