Allison 250-C20B

Service difficulty reports · 1,981

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 engine_model_key = '250C20B'
  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 CA120807001Bearing · failed(CAN) DURING 100HR INSPECTION, METAL FOUND ON ALL 3 M/R TRANSMISSION MAGNETIC CHIP DETECTORS. NOT ENOUGH METAL FOR A COCKPIT CHIP INDICATION. METAL ALSO FOUND IN M/R GEARBOX OIL FILTER. TRANSMISSION ASSY AND MAST ASSY REMOVED FOR INSPECTION, M/R MAST BEARINJul 25, 2012 · Bell 206B · Main Rotor Mast/SwashplateSDR CA120727011Bearing · failed(CAN) DURING APPROACH TO A LANDING SITE, THE PILOT HEARD AN INCREASE IN NOISE FROM THE TURBINE AND EXPERIENCED A SLIGHT YAW TO THE RT. THE NR GUAGE WAS INDICATING 112 PERCENT. THE PILOT LOWERED THE COLLECTIVE AND TRIED TO CONTROL THE RPM WITH THE THROTTLE TOJul 24, 2012 · Bell 206B · Fuel Control/Turbine EnginesSDR CA120716014Strap · torn(CAN) THE VELCRO STRAP SECURING THE ELT TO THE BASE SHOWS UV DETERIORATION. STRAP WAS VERY WEAK, WITH RIPPING ACCOMPLISHED VERY EASY. THESE ELT`S ARE MOUNTED IN FULL VIEW OF THE SUN THROUGH THE BUBBLE. STRAP REPLACED WITH SERVICEABLE.Jul 9, 2012 · Hughes 369D · Emergency Locator BeaconSDR 2012FA0000452Mast · corrodedCORROSION FOUND ON AREA "E" OF MAIN ROTOR MAST, WITH PITTING BELOW THE THREADED AREA CAUSING THE MAST TO BE REMOVED FROM SERVICE. CORROSION FOUND WHILE PERFORMING A 3000 HR INSPECTION. TOTAL TIME AND CYCLES ON THIS MAST ARE UNKNOWN AT THE TIME OF THE REPORT.Jul 3, 2012 · N1078Q · Bell 206B1 · Main Rotor Mast/SwashplateSDR K2DA 20120502Discharge Tube · damagedPILOT NOTICED A SLOWLY INCREASING TURBINE OUTLET TEMPERATURE (TOT) DURING FLIGHT. PILOT PERFORMED A PRECAUTIONARY LANDING WHEN THE TEMPERATURE INCREASE CONTINUED. UPON LANDING AN EXCEEDANCE WAS RECORDED ON THE TEMPERATURE GUAGE. MX DISPATCHED FOR TROUBLESHOMay 25, 2012 · N1607A · Hughes 369E · Turbine Engine Compressor SectionSDR CA120517006Servo · leaking(CAN) LEFT HYDRAULIC SERVO FOUND LEAKING DURING 100 HR AIRFRAME INSPECTION. HYDRAULIC SERVO REPLACED.May 11, 2012 · Bell 206B · Rotorcraft Servo SystemSDR CA120424005Strut · broken(CAN) AFTER HELICOPTER WAS LOADED AND STARTED THE GEAR SPREAD AND A BANG WAS HEARD, UPON VISUAL INSPECTION, THE RT AFT STRUT WAS FOUND TO BE BROKEN WHERE THE DRAG BRACE ATTACHES TO THE LANDING GEAR STRUT. STRUT WAS REPLACED WITH NEW AND RETURNED TO SERVICE.Apr 18, 2012 · Hughes 369D · Nose/Tail Landing Gear Strut/AxleSDR CA120404005Line · cracked(CAN) WHILE MAINTENANCE WAS CARRYING OUT POWER ASSURANCE CHECK IT WAS NOTED THAT THE TORQUE WAS LOW. TROUBLESHOOTING WAS ACCOMPLISHED BY MAINTENANCE AND FOUND A DEFECTIVE ANTI-ICE VALVE. THE ANTI-ICE VALVE FOUND TO HAVE CRACKED WHERE IT ATTACHES TO THE COMPRMar 31, 2012 · Bell 206B · Ice/Rain Protection SystemSDR CA120305004Element · failed(CAN) HEATER SYS WAS PLUGGED IN AND A ODOR OF BURNING PLASTIC/WIRE WAS SMELLED AND THE 7.5A BREAKER POPPED. UNIT UNPLUGGED UPON RETURN THE NEXT DAY TO BASE THE TRANSMISSION PAD, PLUG WAS FOUND TO BE IN A MELTED STATE. THE ACFT WAS PLACARDED AS TANIS HEATER, Mar 5, 2012 · Bolkms BO105C · Heating SystemSDR CA120215011Bearing · worn(CAN) PILOT REPORTED SUDDEN HIGH FREQUENCY VIBRATION DURING FLIGHT. ABORTED FLIGHT, LANDED. INSPECTION REVEALED OIL COOLER BLOWER BEARING WITH EXCESS WEAR. BLOWER ASSY REPLACED. NO VIBRATION NOTED ON RETURN TO SERVICE.Feb 15, 2012 · Hughes 369D · Engine Fuel/Oil CoolerSDR CA120229001Blower · failed(CAN) BLOWER MOTOR BLEED AIR HEATER FAILED IN FLIGHT. BLOWER MOTOR REPLACED.Feb 10, 2012 · Bell 206B · Engine Bleed Air SystemSDR CA120305006Case · cracked(CAN) WHEN ELT WAS REMOVED FOR ANNUAL INSPECTION NUMEROUS CRACKS WERE NOTED AROUND THE CASE SCREWS. A SMALL AMOUNT OF FLUID, POSSIBLY HYDRAULIC, WAS FOUND ON THE ELT. CASE SCREW HAVE NOT BEEN ADJUSTED BY THE OPERATOR SINCE THE ELT WAS PURCHASED. POSSIBLY OVFeb 5, 2012 · Bell 206B · Emergency Locator BeaconSDR CA120229002Seal · leaking(CAN) DURING 24 MONTH INSPECTION THE MAIN ROTOR TRANSMISSION WAS FOUND TO HAVE AN INPUT SEAL LEAK. TRANSMISSION REPLACED.Jan 25, 2012 · Bell 206B · Main Rotor GearboxSDR CA120105004Gearbox · leaking(CAN) INTERMITTENT REDUCTION GEARBOX OIL VENTING AND ERRATIC OIL PRESSURE DROP OUT TO ZERO FOR 15 SECONDS. SUSPECT INTERNAL DEFECT.Jan 4, 2012 · Bell 206B · Turbine Engine Reduction GearSDR CA120104010Fcu · failed(CAN) PILOT WAS APPROACHING LANDING AREA, NOTICED N2 WAS INCREASING, SO USED THE LINEAR ACTUATOR TO REDUCE N2 SPEED. N2 ADJUSTMENT FAILED TO REDUCE N2 SPEED WHILE IN THE AIR, SO PILOT CONTINUED TO ATTEMPT TO SLOW N2 SPEED THROUGH LINEAR ACTUATOR ADJUSTMENT UNDec 14, 2011 · Bell 206B · Fuel Control/Turbine EnginesSDR CA120104001Actuator · binding(CAN) PILOT NOTED STICKY TAIL ROTOR PEDALS ON FINAL APPROACH. TAIL ROTOR SERVO ACTUATOR REPLACED.Dec 5, 2011 · Bell 206B · Rotorcraft Servo SystemSDR CA111201007Bracket · broken(CAN) BRACKET ASSY CAP WHICH IS A MATCHING PART WAS INSTALLED WITHOUT THE NECESSARY SHIMMING IN PLACE. SO INCORRECT ASSY AND THE POSSIBILITY OF THE COLLECTIVE POLE BEING SNAPPED UP WITH NO BLADES INSTALLED OVER ITS LIFE MAY HAVE LED TO THE BREAKING OF THE BEANov 30, 2011 · Hughes 369D · Rotorcraft Flight ControlSDR CA111129011Bushing · elongated(CAN) M/R BLADE INSPECTED FOR INSTALLATION ONTO A BELL 206B. THE BLADE WAS PURCHASED THRU A BHT APPROVED SUPPLIER IN THE USA, STERLING HELICOPTERS IN A USED SERVICEABLE CONDITION. THE MAIN BLADE HAD BEEN REPAIRED 37 HOURS EARLIER WITH A REPLACEMENT BLADE BOLNov 29, 2011 · Bell 206B · Main Rotor BladesSDR CA111107002Strip · debonded(CAN) DURING VISUAL INSPECTION OF MAIN ROTOR SYS PRIOR TO ACFT DEPARTURE. THE ENGINEER WAS TAKING A VISUAL LOOK DOWN THE LENGTH OF THE BLADES WHILE STANDING ON THE MX STEP. DUE TO THE ANGLE OF THE SUN ON THE ROTOR BLADES, NOTICED A STRANGE SHADOW ON THE UPPERNov 7, 2011 · Bolkms BO105S · Main Rotor BladesSDR CA111109010Freewheel Unit · making metal(CAN) METAL SLIVERS FOUND ON CHIP PLUG DURING DAILY INSPECTION. REMOVED FREEWHEEL UINT AND SEVERAL MORE SLIVERS WERE FOUND IN THE FREEWHEEL HSG. FREEWHEEL UNIT SENT TO MFG SERVICE CENTER FOR DISASSEMBLY AND INVESTIGATION. METAL SLIVERS WERE MAX .5" BY .005".Oct 31, 2011 · Bell 206B · Engine/Transmission CouplingSDR K2DA2012F00002Trim Switch · stuckELECTRICAL TRIM FAILURE IN FLIGHT RESULTING IN A FULL RT DEFLECTION ON THE TRIM ACTUATOR. PRECAUTIONARY LANDING CONDUCTED AT AIRPORT OF ORIGIN. ACFT TOWED TO MX FACILITY. INSPECTION REVEALED THAT THE TRIM SWITCH LOCATED ON THE CYCLIC HAD BECOME STUCK IN THEOct 23, 2011 · N500PH · Hughes 369E · Elevator Control SystemSDR 2011FA0000784Shaft · seizedGOVERNOR SHAFT SEIZED. OVERHAUL TEARDOWN REVEALED MOST INTERNAL PARTS WORN EXCESSIVELY.Oct 16, 2011 · N9159F · Hughes 369D · Turbine GovernorSDR 3HCR20110928001Bearing · missingREMOVED GOVERNOR FOR ENGINE SURGING. TESTED AS RECEIVED. FAILED TEST POINT 4.020-4.050. INSPECTED AND FOUND BEARING NOT INSTALLED ON CAM FOLLOWER LEVER.Sep 28, 2011 · N239RA · Bell 206B3 · Turbine GovernorSDR CA110930012Blade · missing(CAN) TWO STATOR BLADES FOUND MISSING ON THE 6TH STAGE OF THE COMPRESSOR HALVES.Sep 27, 2011 · Bell 206L · Turbine Engine Compressor SectionSDR CA110923008Gear · broken(CAN) ACFT MAIN ROTOR TRANSMISSION LOW OIL PRESSURE LIGHT ILLUMINATED IN FLIGHT & PILOT PERFORMED AN UNSCHEDULED LANDING. UPON INSPECTION BY A MECHANIC METAL WAS FOUND ON THE M/R TRANSMISSION CHIP PLUGS. CHIP LIGHT DID NOT ILLUMINATE. TRANSMISSION, PN 369D2Sep 21, 2011 · Hughes 369D · Main Rotor GearboxSDR CA110913002Warning Light · illuminated(CAN) ENGINE CHIP LIGHTS DURING FLIGHT. ACFT LANDED, CHIP PLUGS WERE CLEANED, THE FLIGHT WAS RESUMED, CHIP LIGHTS REOCCURRED, THE ACFT LANDED. THE ACFT WAS RECOVERED BY TRUCK BACK TO THE MAIN MX FACILITY WHERE IT WAITS FOR INVESTIGATION AS TO CAUSE.Sep 9, 2011 · Hughes 369D · Turbine Engine Oil SystemSDR 2011FA0000599Counterweight · departedAT APPROXIMATELY 21:15 THE EVENING OF 31 AUG 2011, DEPARTED THE COUNTY RAMP IN FOR A NIGHT VISION GOGGLE TRAINING MISSION WITH A CONTRACT INSTRUCTOR PILOT. WEATHER AT THE TIME WAS VFR. ALL PRE-FLIGHT CHECKS WERE NORMAL, AS WAS TAKEOFF AND CLIMB HEADING SOUTAug 31, 2011 · N56AL · Bell 206B · Tail Rotor BladesSDR CA110928016Servo · leaking(CAN) HYDRAULIC SERVO FOUND LEAKING DURING ACFT INSPECTION. HYDRAULIC SERVO REPLACED.Aug 29, 2011 · Bell 206B · Rotorcraft Servo SystemSDR YTRA20110827241Engine · flamed outIN CRUSIE FLIGHT, THE ENGINE FLAMED OUT. PROBABLE CAUSE WAS FUEL STARVATION.Aug 27, 2011 · N83AL · Bell 206B3 · Engine (Turbine/Turboprop)SDR 2011FA0000554Combustion Case · crackedOUTER COMBUSTION CASE CRACKED IN RT ARMPIT AREA ALONG SPLITLINE WELD. THIS AREA HAD THE BRAZED REINFORCEMENT.Aug 24, 2011 · N369AW · Hughes 369D · Turbine Engine Combustion SectionSDR CA110810011Bearing · spalledM/R TRANSMISSION CHIP LIGHT ILLUMINATED DURING FLIGHT. EVIDENCE OF METAL FOUND ON CHIP PLUGS. DURING TRANSMISSION DISASSEMBLY, REASON FOR METAL GENERATION WAS FOUND TO BE T/R O/P PINION ROLLER BEARING INNER RACE WHICH WAS CRACKED AND BADLY SPALLED.Aug 10, 2011 · Hughes 369D · Main Rotor GearboxSDR CA110808006Bearing · failedTHE TRANSMISSION HAS BEEN INSPECTED FOR "MAKING METAL", UPON FURTHER INSP THE BEARING, PN 206-040-038-101 SN MB 4790, WAS DEEMED TO BE THE SOURCE. THE BEARING WAS INSTALLED CORRECTLY AS INDICATED, HOWEVER THE BEARING ITSELF WAS ASSEMBLED INCORRECTLY WITH THE IAug 5, 2011 · Bell 206B · Main Rotor GearboxSDR CA110727006Fcu · failedFCU INSTALLED IN ACFT WITH 585.2 HRS TSO AND 0.0 HRS TSI. FCU WOULD NOT SPOOL UP FROM GROUND IDLE TO FLIGHT IDLE.Jul 26, 2011 · Bell 206B · Fuel Control/Turbine EnginesSDR CA110727002Compressor · failedENGINE FAILURE OCCURED. PRELIMINARY INSPECTION REVEAL COMPRESSOR FAILURE.Jul 23, 2011 · Bell 206B · Turbine Engine Compressor SectionSDR CA110803026Governor · malfunctionedROTOR DROOPING TO 94 PERCENT AND WOULD NOT RECOVER. GOVERNOR REPLACED.Jul 19, 2011 · Bell 206B · Turbine GovernorSDR CA110714008Brush Block · failedUNIDENTIFIED METAL PARTICLES FOUND IN ENGINE COMPARTMENT. DURING A ROUTINE BRUSH INSP OF THE STARTER GENERATOR, PN 23032-018, SN 14011, A SCREW WAS FOUND TO HAVE BEEN MAKING CONTACT WITH WHAT LOOKED TO BE AN IMPROPER OR IMPROPERLY INSTALLED SPRING WHICH IS USEJul 13, 2011 · Bell 206B · Starter-GeneratorSDR CA110720007Governor · malfunctioned(CAN) ROTOR RPM DROOPING TO 94 PERCENT. GOVENOR REPLACED.Jul 2, 2011 · Bell 206B · Main Rotor ControlSDR CA111006003Tube · chafed(CAN) TUBE ASSY WAS FOUND TO HAVE CHAFING DAMAGE. CLAMP SETUP FOUND ON ADJACENT TUBE ASSY MIGRATED ALONG THEIR TUBES AND CAME IN CONTACT WITH THE SUBJECT TUBE ASSY. CONTACT CAUSED CHAFING TO OCCUR. CLAMPS ON THE ADJACENT TUBE HAD LOST THE CLAMPUP, WHICH ALLOJun 29, 2011 · Bell 206B · Engine (Turbine/Turboprop)SDR CA110620011Shaft · shearedPILOT WAS IN A HOVER, NOTICED THAT THE NR/N2 RPM HAD INCREASED BY 3 PERCENT, BEEPED RPM DOWN AND CONTINUED HOVERING OPERATION AND THE RPM INCREASED AGAIN. ELECTED TO LAND AND UPON LANDING THE ENGINE STARTED TO OVERSPEED SO THE PILOT ROLLED THROTTLE OFF IMMEDJun 18, 2011 · Hughes 369D · Turbine GovernorSDR 2011F00140Oil Filter · unknownSCAVENGE OIL FILTER END CAP REMAINED IN FILTER HOUSING DURING ROUTINE SCHEDULED FILTER CHANGE. FILTER PN P1050.Jun 8, 2011 · N12AT · Bell 206B · Turbine Engine Oil SystemSDR CA110516012Brushes · wornTHIS STARTER/GENERATOR WAS INSTALLED ON THE ACFT AT THE TIME OF PURCHASE. STARTER BRUSHES WORN.May 13, 2011 · Bell 206B · Starter-GeneratorSDR CA110603003Elt · crackedDURING ANNUAL ELT INSPECTION, UNIT WAS FOUND TO HAVE 28 CRACKS IN THE HOUSING. THE UNIT WAS FOUND TO HAVE SOME OIL CONTAMINATION ON THE HOUSING. ALL CRACKS WERE FOUND NEAR THE COVER SCREWS SUGGESTING THAT THE SCREWS MAY HAVE BEEN OVER-TORQUED. THE COVER SCREWMay 11, 2011 · Bell 206B · Emergency Locator BeaconSDR HXF2011F00000Governor · malfunctionedPILOT WAS HOVERING, WHEN SUDDENLY THE RPM STARTED TO OVERSPEED. RPM CONTROL WAS MINIMIZED WITH THROTTLE INPUT UNTIL AN UNEVENTFUL LANDING WAS AFFECTED IN A NEARBY BALLFIELD. REPLACED GOVERNOR WITH A SERVICEABLE UNIT AND RECTIFIED THE PROBLEM.May 8, 2011 · N371EE · Hughes 369E · Turbine GovernorSDR CA110511006Transponder · intermittentATC TRANSPONDER INTERMITTENTLY TRANSMITTING WRONG MODE A CODE. MODE A CODE SELECTOR SWITCHES INTERMITTENT. TRANSPONDER IN SERVICE FOR 5 DAYS SINCE LAST RECERTIFICATION. TRANSPONDER REPLACED.Apr 30, 2011 · Bell 206B · ATC Transponder SystemSDR CA110426006Disc Pack · cracked(CAN) CRACKED DISC SEGMENT.Apr 26, 2011 · Bell 206B · Tail Rotor Drive ShaftSDR CA110427017Strut · crackedWHILE PERFORMING THE 12 MONTH INSPECTION, A CRACK WAS NOTED IN THE LT REAR STRUT. THIS CRACK WAS 7" LONG RUNNING ROUGHLY MIDPOINT AND UP UNDER THE STEP. THE CRACK DID NOT START OR END AT ANY BOLT HOLES. THE CRACK WAS PERPENDICULAR TO THE BOLT HOLES AND RAN PAApr 20, 2011 · Hughes 369D · Main Landing Gear Strut/Axle/TruckSDR CA080317008Recorder · malfunctioned(CAN) ON INSPECTION THE RECENTLY ACTIVATED DATA ACQUISITION UNIT INFORMATION WAS DOWNLOADED. THE DATA REVEALED AN OVERTORQUE SITUATION OF 129 PERCENT FOR 3 SECONDS WAS EXPERIENCED ON 30TH OF NOVEMBER, 2007. THE LAST REPORT WAS DOWNLOADED ON THE 29TH OF NOV WMar 12, 2011 · Bell 206B · Data Recorders (Flight/Maintenance)SDR 2011FA0000163Engine · making metalDURING TAKEOFF THE PILOT EXPERIENCED AN ENGINE CHIP LIGHT AND RETURNED FOR LANDING. MX FOUND SMALL CHIPS ON THE LOWER ENGINE PLUG AND A SLIVER ON THE UPPER PLUG. THE ENGINE WAS REMOVED FROM THE ACFT AND SENT TO SERVICE FOR MX.Mar 8, 2011 · N842LA · Hughes 369E · Engine (Turbine/Turboprop)SDR 2011FA0000150Oil System · warning lightDURING A TOUR FLIGHT, THE PILOT GOT A ENGINE CHIP LIGHT INDICATION. THE PILOT PERFORMED AN UNEVENTFUL UNSCHEDULED LANDING. THE MX DEPARTMENT WAS DISPATCHED AND FOUND A METAL SLIVER ON THE UPPER ENGINE CHIP PLUG THAT WAS CAUSING THE LIGHT. BOTH UPPER AND LOWEMar 2, 2011 · N842LA · Hughes 369E · Turbine Engine Oil SystemSDR CA110307009Pump · leaking(CAN) HYDRAULIC PUMP LEAKING AT TACH GENERATOR. HYDRAULIC PUMP REPLACED.Feb 27, 2011 · Bell 206B · Hydraulic Pump (Electric/Engine), Main
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