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 KBM2006F00006Radio · malfunctionedNR 1 COM KNOB WILL NOT TURN POWER OFF, REMOVED AND REPLACED. (K)Dec 21, 2005 · N188TV · Bell 206B · VHF Communications SystemSDR AU510002066Washer · failed(AUS) TAIL ROTOR FORK ASSEMBLY NUT TABWASHER FAILED ALLOWING THE NUT TO WORK LOOSE. AIRCRAFT THEN SUFFERED A LOSS OF TAIL ROTOR CONTROL WHICH RESULTED IN A FORCED LANDING WITH MINOR AIRCRAFT DAMAGE. INVESTIGATION FOUND A BROKEN INTERNAL TAB ON THE TABWASHER.(Dec 12, 2005 · Hughes 369E · Tail Rotor HeadSDR AU510002144Gearbox · making metal(AUS) TAIL ROTOR GEARBOX METAL CONTAMINATION. INVESTIGATION FOUND THE INPUT SHAFT REAR BEARING PN 369D25417 TO BE UNSERVICEABLE. INPUT SHAFT PN 369D25434 CRACKED IN AREA UNDER BEARING. (CASA NR 510002144)Dec 12, 2005 · Hughes 369D · Tail Rotor GearboxSDR KBM2006F00035Battery · dischargedBATTERY, REMOVED DUE TO SLOW START. REMOVED AND REPLACED. (K)Dec 5, 2005 · N73DP · Bell 206B · Battery/Charger SystemSDR KBM2005F00357Cage · damagedFOUND OIL COOLER IMPELLER DAMAGED. REMOVED AND REPLACED BLOWER CAGE ASSY. (K)Dec 2, 2005 · N73DP · Bell 206B · Engine Oil CoolerSDR ALG2005F00098Cap · leakingAFTER OPS CHECK FLIGHT, AN OIL LEAK WAS NOTED. FOUND OIL LEAKING FROM ENGINE RESERVOIR CAP STEM. REPLACED CAP ASSEMBLY. (K)Dec 1, 2005 · N3896W · Bell 206B · Turbine Engine Oil SystemSDR ALG2005F00095Starter Gen · failedGENERATOR STOPPED CHARGING ON SHORT FINAL. REMOVED AND REPLACED STARTER/ GENERATOR AND BATTERY. (K)Nov 30, 2005 · N3912Q · Bell 206B · Starter-GeneratorSDR CA051205004Module · corrodedCORROSION WAS FOUND ON A RELAY SOCKET AND ASSOCIATED WIRING CAUSING SYSTEM FAILURE. MOISTURE HAD MIGRATED INTO THE NOSE COMPARTMENT CAUSING CORROSION ON THE DIMMING MODULE COMPONENTS.Nov 30, 2005 · Bolkms BO105S · Instrument PanelSDR CA051117004Mount Bracket · cracked(CAN) DURING SCHEDULED 300 HOUR AIRFRAME INSPECTION, A CRACK WAS FOUND IN THE COOLING FAN MOUNT. PART WAS REMOVED AND NEW PART WAS ORDERED ON MHI PO NR 204119. UNSERVICEABLE PART IS AVAILABLE IF REQUIRED. (TC 20051117004)Nov 17, 2005 · Hughes 369D · Engine Oil CoolerSDR YTRR106611Indicator · out of toleranceTOT INDICATOR WOULD NOT CHECK OT DURING CALIBRATION CHECK.Nov 4, 2005 · N2043B · Bell 206B3 · Engine EGT/TIT Indicating SystemSDR YTRR106627Fuel Control · hot startFUEL CONTROL FAILED TO HIGH-SIDE DURING LIGHT OFF. REPLACED FUEL CONTROL ASSEMBLY.Nov 3, 2005 · N2043B · Bell 206B3 · Fuel Controlling SystemSDR KBM2005F00343Actuator · inoperativeACTUATOR, UNIT INOPERATIVE, REMOVED AND REPLACED. (K)Nov 3, 2005 · N73DP · Bell 206B · Engine Anti-Icing SystemSDR CA051109001Compressor · damagedFOLLOWING A REPORT OF HIGHER THAN NORMAL TOT ON NR 2 ENGINE A POWER CHECK WAS CONDUCTED AND TROUBLESHOOTING LED TO SPLITTING THE COMPRESSOR FOR INSPECTION. SUBSTANTIAL DAMAGE WAS FOUND ON THE 5TH AND 6TH ROW STATOR VANES AND 6TH STAGE ROTOR BLADES. NO DAMAGEOct 29, 2005 · Bolkms BO105S · Turbine Engine Compressor SectionSDR CA061004002Window · separated(CAN) AIRCRAFT HAD DEPARTED FROM HELICOPTER PAD AND WAS TRANSITING TO WEST COAST. SHORTLY AFTER TAKE-OFF AND ALMOST IN CRUISE, THE PASSENGER SITTING IN THE LT CREW SEAT HEARD A NOISE. AT THAT TIME HE NOTICED THAT THE WIND DEFLECTOR HAD BECOME SEPARATED AT THOct 28, 2005 · Bolkms BO105S · Passenger Compartment WindowsSDR AOC05002Nozzle · departedUPON INSPECTION OF THE TURBINE ASSEMBLY, THE NOZZLE SHIELD DOME WAS FOUND TO BE COMPLETELY DETACHED FROM THE NOZZLE ASSEMBLY. APPEARS THAT NOZZLE SHIELD WAS NOT PROPERLY BRAZED IN PLACE AT MANUFACTURE. THIS NOZZLE ASSEMBLY NOT INCLUDED IN CEB-A-1370R2, WHICHOct 25, 2005 · N541 · Hughes 369D · Turbine SectionSDR ALG2005F00084Volt Regulator · failedIN CRUISE FLIGHT, BATTERY TEMP LIGHT ILLUMINATED. BATTERY SWITCH WAS TURNED OFF IAW EMERGENCY PROCEDURES. BATTERY HOT LIGHT ILLUMINATED A SHORT TIME AFTERWARDS. AIRCRAFT WAS LANDED A SHORT TIME AFTERWARDS AND MAINTENANCE NOTIFIED. REMOVED AND REPLACED AIRCOct 21, 2005 · N116AL · Bell 206B · DC RegulatorSDR 2005FA0001404Beam · crackedAN INSPECTION WAS CONDUCTED ON THE UPPER BOX BEAM OF THE CABIN. UPON REMOVAL OF THE INSULATION BLANKET, MULTIPLE CRACKS TO THE BOX BEAM ASSY WAS DISCOVERED. THE AC HAS BEEN INVOLVED IN 2 INCIDENTS.Oct 11, 2005 · N2763N · Bell 206B · Fuselage Main, StructureSDR 2006FA0000115Combust Chamber · crackedDURING AN INSPECTION FOR HIGH TOT THE OUTER COMBUSTION CAN WAS FOUND TO BE CRACKED IN THE LEFT (ARM PIT). (K)Oct 6, 2005 · Hughes 500N · Turbine Engine Combustion SectionSDR 2006FA0000113Line · leakingPILOT SAW TORQUE PRESS FLUCTUATE. TORQUE PRESS LINE TO GAUGE LEAKED AND ENGINE WAS STARVED OF OIL. THE AIRCRAFT HAD MADE A NORMAL LANDING AND SHUTOFF ENGINE SEIZED UP ON COASTDOWN, REPLACED ENGINE. (K)Oct 5, 2005 · Hughes 369D · Engine (Turbine/Turboprop)SDR CA051017010Idler Gear · fracturedAIRCRAFT NOTED AS SMOKING ON TAXI BY TOWER. TAKEOFF WAS ABORTED AND INSUFFICIENT OIL PUMP SCAVENGE NOTED AS SOURCE OF TURBINE SMOKING PROBLEM. WHEN DISMANTLED FOR REPAIR AND INSPECTION, FOUND ONE SCAVENGE ELEMENT GEAR HAD A BROKEN TOOTH. PART IS 3812.7 HOURSep 29, 2005 · Turbine Engine Oil SystemSDR 2005FA0001523Stud · brokenFOUND THE LOWER RT COMPRESSOR STUD BROKEN OFF. DURING INSPECTION PROCESS FOR COMPRESSOR CASE HALVES. IT WAS NOTICED THAT THE RT LOWER COMPRESSOR STUD WAS MISSING (THAT IS THE NUT AND STUD WERE NOT VISABLE ON THE COMPRESSOR FLANGE). REPLACED UNIT. (K)Sep 26, 2005 · N511SB · Hughes 369D · Turbine Engine Compressor SectionSDR CA060208005Coupling · defectiveSAGS WAS REPLACED DUE TO PITTING AND SPALLING DURING THIS SHOP VISIT. ON JUNE 29, 2005, NEW SAGS, 2 ½ BEARING AND RETAINING RING WERE SENT TO CUSTOMER FOR REPLACEMENT DUE TO SAGS DAMAGE. AFTER 191.4 HOURS USAGE, ON SEP 18, 2005, CAC-33575 WAS SENT IN AGAIN FSep 18, 2005 · Turbine Engine Compressor SectionSDR CA061002008Bearing · spalled(CAN) M/R TRANSMISSION CHIP DETECTOR FOUND TO HAVE A LARGE AMOUNT OF METAL. SOURCE FOUND TO BE THE T/R O/P PINION ROLLER BEARING INNER RACE. THE INNER RACE WAS FOUND TO HAVE HEAVY SPALLING IN A LARGE AREA. (APPROXIMATELY .550 INCH X .200 INCH) (TC NR 200610Sep 15, 2005 · Hughes 369D · Main Rotor GearboxSDR CA050830008Skid · corroded(CAN) TAIL SKID BROKEN DUE TO CORROSION.Aug 30, 2005 · Agusta A109A2 · Auxiliary Gear (Tail Skid)SDR CA050831003Connector · broken(CAN) WHEN THE PILOT WAS CONDUCTING HIS PREFLIGHT CHECK HE NOTICED THAT THE THROTTLE LEVER FOR NR 2 ENGINE WAS ROUGH BETWEEN SHUTOFF AND GROUND IDLE. UPON INVESTIGATION OF THE THROTTLE LINKAGE, IT WAS DISCOVERED THAT ONE OF THE LOCK TANGS ON THE THROTTLE TELEFAug 29, 2005 · Bolkms BO105S · Engine Fuel System WiringSDR 2005FA0001320Bearing · failedENGINE CHIP LIGHTS FOLLOWED BY ENGINE NOISE. (K)Aug 25, 2005 · N8357F · Hughes 369D · Engine (Turbine/Turboprop)SDR 2005FA0001336Governor · stiffON INSPECTION THE GOV LOOKED TO BE OUT OF RIG. WHEN THE ARM WAS REMOVED IT WAS DISCOVERED THAT THE SHAFT WAS EXTREMELY STIFF. REPLACED GOVERNOR. (K)Aug 15, 2005 · Hughes 369D · Turbine GovernorSDR CA051123006Tip Cap · damaged(CAN) A/C HAD A BLADE REPLACED DUE TO A CRACK. NEW BLADE WAS VERY DIFFICULT TO BALANCE, SEEMED HEAVIER THAN THE OTHERS. BALANCING OF BLADES MET CRITERIA AND IT WAS RELEASED FOR SERVICE. SWEEPING OF BLADES WAS USELESS IN ACHIEVING BALANCE. SECOUND DAY OF THE JAug 14, 2005 · Hughes 369D · Main Rotor ControlSDR ALG2005F00068Switch · failedON INBOUND FLIGHT, TRANSMISSION TEMPERATURE LIGHT ILLUMINATED. TRANSMISSION TEMPERATURE GAUGE REMAINED NORMAL. MAINTENANCE NOTIFIED. REMOVED AND REPLACED TEMPERATURE SWITCH. LEAK CHECK AND GROUND RUN C/W, NO DEFECTS NOTED. ALL WORK IAW MM. (K)Aug 13, 2005 · N116AL · Bell 206B · Rotor Drive Indicating SystemSDR 2005FA0001337Motor · inoperativeON APPROACH TO LANDING THE LONG TRIM MOTOR QUIT WORKING. REPLACED UNIT. (K)Aug 13, 2005 · Hughes 369A · Rotorcraft Flight ControlSDR YTRR105443Governor · malfunctionedUNDER HEAVY LOAD IN CRUISE FLIGHT ENGINE WOULD OSCILLATE AND NOT RECOVER. R/R GOVERNOR AND PROBLEM DISAPPEAREDAug 11, 2005 · N2043B · Bell 206B3 · Turbine GovernorSDR HDNR200500002Turbine Wheel · separatedENGINE LOST POWER IN FLIGHT. UPON INSPECTION OF THE TURBINE, THE 2ND STAGE TURBINE WHEEL WAS FOUND TO HAVE 1 BLADE MISSING WHICH SUBSEQUENTLY CAUSED SIGNIFICANT FOD DAMAGE TO THE 2ND, 3RD AND 4TH STAGE NOZZLES AND THE 3RD AND 4TH STAGE STAGE WHEELS AS WELL ASAug 9, 2005 · N911WK · Bolkms BO105CBS · Turbine SectionSDR 2005FA0001338Motor · inoperativePILOT BEEPED THE N2 UP AND WAS UNABLE TO BEAP DOWN, THEN LATER GOT IT DOWN WITH NUMEROUS ATTEMPTS AND FLEW IT BACK. UNIT WAS CHANGED. (K)Aug 9, 2005 · Hughes 369D · Turbine GovernorSDR HDNR200500001Housing · debondedOIL NOT SCAVENGING. OIL EMPTIED FROM AIRCRAFT TANK TO ENGINE GEARBOX DURING GROUND OPERATION. FOUND THAT THE SEALANT THAT SOME OVERHAUL VENDORS PUT IN THE BACK OF THE LOWER RIGHT COMPRESSOR MOUNT INSERT, INSIDE THE GEARBOX HOUSING, HAD FALLEN OUT AND PLUGGEDAug 4, 2005 · N911E · Bolkms BO105CBS · Turbine Engine Accessory DriveSDR KBM2005F00188Relay · inoperativeBATTERY RELAY INOPERATIVE, REMOVED AND REPLACED. (K)Jul 28, 2005 · N73DP · Bell 206B · Battery/Charger SystemSDR YTRR104953Bleed Valve · defectiveENGINE POWER TREND CHECK GOING DOWN ON CHART. REPLACED BLEED-VALVE ON ENGINE.Jul 25, 2005 · N255RA · Bell 206B3 · Compressor Bleed ValveSDR ALG2005F00053Fuel Control · out of rigDURING RUN UP THE ENGINE FLAMED OUT, THE PILOT NOTIFIED MAINTENANCE. THE MECHANIC UPON TROUBLESHOOTING FOUND THE FUEL CONTROL OUT OF RIG. HE RIGGED THE FUEL CONTROL IAW MM AND AC WAS RETURNED TO SERVICE UPON COMPLETION OF FUNCTION CHECKS. (K)Jul 25, 2005 · N35WH · Bell 206B · Fuel Control/Turbine EnginesSDR CA050725002Blade · damaged(CAN) MAIN ROTOR BLADES P/N 206-010-200-133 S/N A6716 AND A6778 WILL NOT FLY LOWEST IPS WAS 1.7 WITH MAXIMUM TABING. THESE ARE NEW BLADES WITH AN APPARENT MANUFACTURING DEFECT.Jul 24, 2005 · Bell 206B · Main Rotor BladesSDR ALG2005F00051Relay · faultyDURING THE SECOND TOUCH DOWN OF THE DAY, FLOATS INFLATED WITHOUT ANY INPUT FROM THE PILOT. THE MECHANIC REMOVED AND REPLACED THE FAULTY RELAY AND THE AC WAS RETURNED TO SERVICE UPON COMPLETION OF SYSTEM CHECKS. (K)Jul 23, 2005 · N1078Y · Bell 206B · Emergency Flotation SectionSDR CA051117006Blade · cracked(CAN) DURING TRAINING FOR TORQUE EVENT INSPECTION (AWD2003-24-01) A POSSIBLE CRACK WAS FOUND. THE M/R BLADE WAS REMOVED FOR A BETTER VISUAL LOOK WITH THE 10X GLASS. THE BLADE WAS ALSO INSPECTED BY COUGAR NDE LTD. AND CONFIRMED THE CRACK. MHI PO NR 20385. TJul 21, 2005 · Hughes 369D · Main Rotor BladesSDR KBM2005F00159Igniter Box · failedIGNITER BOX, UNIT POPPED WHEN STARTER BUTTON PRESSED. (K)Jul 20, 2005 · N188TV · Bell 206B · Ignition Power SupplySDR KBM2005F00160Igniter Box · inoperativeIGNITER BOX, UNIT POPS CIRCUIT BREAKER, REMOVED AND REPLACED. (K)Jul 19, 2005 · N188TV · Bell 206B · Ignition Power SupplySDR CA050913010Bearing · unserviceable(CAN) ROD END BEARING WORN BEYOND SERVICEABLE LIMITS PREMATURELY. MANUFACTURER OF RODEND BEARING. WARRANTY ON THIS BEARING AND PREVIOUS PREMATURELY WORN BEARINGS REJECTED. SUSPECT SUBSTANDARD PARTS DUE TO HIGH WEAR RATE, CONFIRMED BY OTHER OPERATORS.Jul 11, 2005 · Hughes 369D · Main Rotor HeadSDR CA050718007Mount · unserviceablePILOT REPORTED OF AN UNUSUAL VIBRATION THROUGH THE AIRFRAME AFTER SHUTDOWN. A/C INSPECTED AND FOUND ONE SPHERICAL BEARING HAD LOST ITS STAKING AND WAS FREE TO MOVE. RESTRAINT REPLACED AND A/C RETURNED TO SERVICEJul 7, 2005 · Bell 206L · Main Rotor Transmission MountSDR AU510001652Leg Assy · cracked(AUS) LT REAR LANDING GEAR LEG CRACKED FROM CROSS BRACE LOWER BOLT HOLE. CRACK LENGTH APPROXIMATELY 9.525MM (0.375IN). SEE ATTACHMENT FOR IPC REFERENCE. (OTHER CAUSE: AGE, MATERIAL, OPERATES ON FIXED FLOATS ) (CASA NR 510001652)Jul 7, 2005 · Hughes 369E · Landing Gear Retraction/Extension SystemSDR CA050817001Window · failed(CAN) RETAINER FOR SHOOTING WINDOW FAILED AND VERTICAL SLIDER DEPARTED THE AIRCRAFT. WINDOW REPLACED, A/C INSPECTED, NO FURTHER DAMAGE FOUND.Jun 28, 2005 · Bell 206L · Flight Compartment WindowsSDR KBM2005F00123Pump · leakingFUEL PUMP, UNIT LEAKING AT VENT SEAL. REMOVED AND REPLACED. (K)Jun 12, 2005 · N188TV · Bell 206B · Engine Fuel PumpSDR CA050614006Blade · failed(CAN) BLADE WAS DECLARED BEYOND SALVAGE 'SCRAP' ON 12-09-04 AND FOUND WITH SERVICEABLE TAG ON 04-17-05.Jun 10, 2005 · Bell 206B · Main Rotor BladesSDR CA050610003Gearbox · making metal(CAN) ON INSPECTION A SMALL BUT SIGNIFICANT QUANTITY OF FUZZ WITH SOME SMALL FLAKES WAS FOUND ON THE MAGNETIC CHIP DETECTOR. THE SAME HAD BEEN NOTICED ON THE PREVIOUS100 HOUR INSPECTION. NO CHIP LIGHT HAD BEEN REPORTED. THE OIL WAS DRAINED ON THE PREVIOUS INSPJun 9, 2005 · Bolkms BO105S · Tail Rotor GearboxSDR CA050610004Pin · cracked(CAN) WHEN REMOVING THE REAR FLANGE ON THE LONG TAIL ROTOR DRIVE SHAFT FOR REPLACEMENT OF THE BEARING SLEEVES, TWO OF THE THREE SILVER PLATED SPRING PINS WERE FOUND CRACKED. ONE WAS CRACKED ALONG IT S FULL LENGTH, THE OTHER EXTENDED FROM THE BEVELED END OF THEJun 9, 2005 · Bolkms BO105S · Tail Rotor Drive Shaft
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