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 KBM2004F00212Probe · fluctuatesENGINE OIL, TEMPERATURE FLUCTUATES INFLIGHT. REMOVED AND REPLACED TEMP OIL PROBE.Jun 2, 2004 · N751H · Snias AS350B2 · Engine Oil TemperatureSDR KBM2004F00170Line · leakingHYDRAULIC LINE CHAFED AND LEAKING. REMOVED AND REPLACED.Jun 1, 2004 · N667JM · Bell 206B · Hydraulic System, MainSDR KBM2004F00175Pitch Link · crackedT/R PC LINK HAS RADIAL PLAY (.008) IN THE SPHERICAL BEARING AND A CRACK IN THE SILENT BUSH. REMOVED AND REPLACED.May 29, 2004 · N751H · Snias AS350B2 · Tail Rotor Drive ShaftSDR KBM2004F00174Landing Light · inoperativeLANDING LIGHT INOPERATIVE. REMOVED AND REPLACED.May 19, 2004 · N751H · Snias AS350B2 · Exterior LightingSDR ERAA097088Fuel Control · malfunctionedON START WOULD ACELERATE TO 62 TO 65 THEN ADVANCING THROTTLE WOULD STILL BLEED OFF. OVERHAULED IAW HONEYWELL OHM FORM 15-6026.May 14, 2004 · N423EH · Bell 412 · Fuel Controlling SystemSDR 109050504Engine · smokeAFTER LANDING AT A REMOTE FIRE STATION TO PICK UP A PATIENT, THE CREW CHIEF NOTICED HEAVY WHITE SMOKE COMING FROM THE NR 1 ENGINE EXHAUST. THE AIRCRAFT WAS SHUT DOWN AND REMAINED ON SIGHT OVERNIGHT. THE FOLLOWING DAY MAINTENANCE CONFIRMED THE PROBLEM AND THE EMay 5, 2004 · N21RX · Agusta A109 · Engine (Turbine/Turboprop)SDR KBM2004F00173Indicator · fluctuatesNG GAUGE FLUCTUATES BY I 0.5. REMOVED AND REPLACED.May 4, 2004 · N751H · Snias AS350B2 · Engine RPM Indicating SystemSDR ERAA096620Governor · splitTORQUE SPLITS GOVERNOR READS VERY FAST NR 2 ENGINE GOVERNOR COULDN'T KEEP UP. REPAIRED AND TESTED IAW HONEYWELL OHM FORM 15-1095A.May 2, 2004 · N294EH · Bolkms BO105S · Turbine GovernorSDR AC2A094952Governor · loosePOTTING COMPOUND IS BROKEN LOOSE AT SHAFT. REPLACED WITH SERVICEABLE GOVERNOR.Apr 30, 2004 · N50588 · Bolkms BO105S · Turbine GovernorSDR R322004F00000Blade · debondedTAIL ROTOR BLADES, NO MECHANICAL DIFFICULTIES NOTED ON PREFLIGHT. UPON LANDING, SHUTDOWN AIRCRAFT. AFTER EXITING AIRCRAFT, NOTICED TAIL ROTOR BLADE (C5-4834) HAD DEBONDED FROM SKIN. DEFECT IN MFG PROCESS.Apr 27, 2004 · N206TH · Bell 206B · Tail Rotor BladesSDR ERAA098180Fuel Control · stalledHAS COMPRESSOR STALL OFF IDLE WHILE ADVANCING THROTTLE TO FULL FCU TESTED WITHIN SERVICE LIMITS. FCU TESTED IAW HONEYWELL OHM FORM 15-602E AND RESET TO NOMINAL LIMITS.Apr 18, 2004 · N125EH · Bolkms BO105S · Fuel Control/Turbine EnginesSDR AUS20040289Bearing · lack of lube(AUS) COLLECTIVE JACKSHAFT SUPPORT BEARING FAULTY. INVESTIGATION FOUND THAT THE BEARING LUBRICANT HAD DRIED OUT.Apr 16, 2004 · Bell 206B3 · Main Rotor ControlSDR CA040420001Structure · damaged(CAN) THE COLLECTIVE FRICTION ASSEMBLY WAS REPORTED FEELING LOOSE. LOOSENESS WAS TRACED TO THE BRAKE BOX, WHICH WAS MOUNTED WITH 6MM BOLTS IN 10MM HOLES.Apr 15, 2004 · Bolkms BO105S · Main Rotor BrakeSDR ERAA096619Governor · splitCAUSING TORQUE SPLITS. INPUT LEVER STIFF. REPAIRED AND TESTED IAW HONEYWELL OHM FORM 15-1095A.Apr 10, 2004 · N294EH · Bolkms BO105S · Turbine GovernorSDR BAQA094292Pump · inoperativeFUEL PUMP INOPERATIVE. REPLACED WITH SERVICABLE UNIT. 04/29/2004Apr 6, 2004 · N109CJ · Agusta A109A2 · Engine Fuel PumpSDR ALG2004F00018Fuel Cap · missingAFTER APPROX 5 MINUTES OF FLIGHT AFTER TAKE OFF FROM EC-160, PILOT NOTICED A STRONG ODOR OF FUEL AND GAUGE WAS FUNCTIONING PROPERLY. RETURNED TO EC-106, SHUT DOWNED AND INSPECTION OF AIRCRAFT SHOWED MISING FUEL CAP. FUEL CAP HAD BEEN REPLACED AFTER REFUELINGApr 3, 2004 · N116AL · Bell 206B · Fuel StorageSDR CA040405005Release Cable · failed(CAN) WHILE SLINGING OPERATIONS WERE BEING CONDUCTED, THE LOAD WAS INADVERTENTLY RELEASED DUE TO FAILURE OF THE RELEASE CABLE ASSEMBLY SWAGING AT THE LOWER END.Mar 30, 2004 · Bolkms BO105S · Cargo CompartmentsSDR ERAA097505Governor · bindingGOVERNOR HAS BINDING ARM. UNABLE TO TEST AS RECEIVED DUE TO SEIZED THROTTLE. BUSHING SEIZED, INTERNAL BEARINGS FOUND ROUGH/DRY. REPAIRED AND TESTED IAW HONEYWELL OHM FORM 15-1095A.Mar 30, 2004 · N133EH · Bolkms BO105S · Turbine GovernorSDR ALG2004F00019Skin · crackedWHILE PERFORMING AN INSPECTION, CRACK IN LOWER SKIN AT T/B STA 153. STARTING AT EDGE OF SKIN, MEASURING 2.5 INCHES LONG, RUNNING THE CIRCUMFERENCE DIRECTION , POSSIBLY CAUSED BY ROUGH EDGE IN SKIN OR MAYBE A VIBRATION.Mar 28, 2004 · N198H · Bell 206B · Rotorcraft Tail BoomSDR CA040324005Lever · misinstalled(CAN) THE CAM LEVER WAS INSTALLED INCORRECTLY. THE LEVER CAN BE INSTALLED POINTING EITHER UP OR DOWN (THE ORIENTATION OF THE LEVER ON THE PT6 IS OPPOSITE TO THAT OF ROLLS ROYCE). THE CALIBRATION PROCESS DONE DURING THE OVERHAUL IS UNAFFECTED BY THE ORIENTATIMar 24, 2004 · Turbine GovernorSDR AUS20040236Shaft · worn(AUS) POWER TURBINE GOVERNOR DRIVESHAFT FAILED. INVESTIGATION FOUND THE DRIVESHAFT COUPLING SPINNING FREELY ON THE DRIVESHAFT.Mar 17, 2004 · Hughes 369D · Turbine GovernorSDR CA040405004O-Ring · leaking(CAN) FUEL WAS OBSERVED LEAKING FROM THE CONNECTOR ON TOP OF THE FUEL FILTER ASSEMBLY. REMOVAL OF THE CONNECTOR PLUG REVEALED FUEL CONTAMINATION INSIDE THE PLUG. THE O-RING LOCATED INSIDE THE CONNECTOR HOUSING WAS DAMAGED CAUSING LEAKAGE.Mar 16, 2004 · Bolkms BO105S · Aircraft Fuel Filter/StrainerSDR EOO2004F00003Support · crackedFRONT SUPPORT ON COMPRESSOR FOUND CRACKED. REMOVED ENGINE FOR COMPRESSOR CASE HALF INSPECTION. FOUND FRONT SUPPORT CRACKED AT THE LT ANTI-ICE FITTING ABOUT 65 PERCENT AROUND THE CIRCUMFERENCE OF THE BRAZEO FLANGE JUST BEYOND THE BRAZE. REPLACED UNIT.Mar 10, 2004 · N90431 · Hughes 369D · Engine Mount SectionSDR ALG2004F00012Warning Light · illuminatedAT TAKE OFF, DURING CLIMP OUT ENGINE CHIP LIGHT FLUCUATED ON AND OFF. MAINTENANCE REMOVED BOTH CHIP PLUGS, FOUND NOTHING ON EITHER. CLEANED CONNECTORS, REINSTALLED AND COMPLIED WITH OPERATIONAL GROUND RUN CHECK, CHECKED GOOD.Mar 9, 2004 · N3912Q · Bell 206B · Antenna/Radome Anti-Ice/De-Ice SystemSDR AUS20040166Fitting · separated(AUS) ENGINE TURBINE OIL PRESSURE FITTING PN AN833-4J SEPARATED FROM GEARBOX COVER PN 6898569 ALLOWING ENGINE OIL TO BE PUMPED OVERBOARD. SUSPECT CAUSED BY B NUT VIBRATING LOOSE ALLOWING THE FITTING TO FRET IN THE COVER. REDUCED OIL FLOW (AND COOLING) TO THE Mar 8, 2004 · Bell 206B3 · Turbine Engine Oil SystemSDR ALG2004F00010Servo · bindingWHILE PICKING UP TO A HOVER. FIRST FLIGHT OF THE DAY, WHILE PICKING UP TO A HOVER FELT BINDING IN CYCLIC. SET AIRCRAFT DOWN AND CHECKED FRICTION AND HYDRAULIC SWITCH, MADE SECOND ATTEMPT TO PICKUP TO A HOVER WITH SAME STIFFNESS IN CYCLIC. SHUTDOWN AND NOTIFFeb 29, 2004 · N198H · Bell 206B · Rotorcraft Servo SystemSDR KBM2004F00172Pressure Switch · inoperativeFUEL PUMP LIGHT WILL NOT EXTINGUISH. REMOVED AND REPLACED FUEL PRESSURE SWITCH.Feb 26, 2004 · N73DP · Bell 206B · Aircraft Fuel Distribution SystemSDR CA040302005Cable · frayed(CAN) PILOT HAD UNCOMMANDED LOAD RELEASE. INVESTIGATION REVEALED THAT THE MANUAL RELEASE CABLE HAD FRAYED WHERE THE CABLE GOES INTO THE CARGO HOOK. THIS CAUSED THE HOOK TO RELEASE. THIS IS A ONBOARD SYSTEMS KEEPERLESS HOOK.Feb 25, 2004 · Hughes 369D · Aerial Tow EquipmentSDR KBM2004F00169Radio · stuckVHF IS STUCK ON SQUALCH NR 2. REMOVED AND REPLACED.Feb 23, 2004 · N667JM · Bell 206B · VHF Communications SystemSDR CA040225013Bearing · failed(CAN) DURING FLIGHT PILOT COULD SMELL SOMETHING ABNORMAL, HE LOOKED AT CB PANEL AND NOTICED HELICRAFT HEATER CB SWITCH HAD TRIPPED. HE THEN TURNED OFF BLEED AIR TO PREVENT HEAT DAMAGE, ONCE BLOWER WAS REMOVED IT WAS DETERMINED THAT THE BEARINGS HAD FAILED.Feb 18, 2004 · Bell 206B · Heating SystemSDR 2004F00079Bracket · crackedRIVETED BRACKET, CONTAINING AIRCRAFT ATTACHING STUD, FOUND CRACKED IN BEND RADIUS.Feb 16, 2004 · N518Z · Bell 206B · Fuselage Miscellaneous StructureSDR 2004F00080Bracket · crackedRIVETED BRACKET, CONTAINING AIRCRAFT ATTACHING STUD, FOUND CRACKED IN BEND RADIUS.Feb 16, 2004 · N518Z · Bell 206B · Fuselage Miscellaneous StructureSDR ERAA094436Governor · malfunctionedTORQUE SPLITS; GOVERNOR LAGS. WARRANTY REPAIR ACTION TAKEN: SENT FOR REPAIR. REPAIRED AND TESTED IAW MFG OHM FORM 15-1095A.Feb 15, 2004 · N294EH · Bolkms BO105S · Fuel Controlling SystemSDR CA040302004Cable · frayed(CAN) PILOT HAD UNCOMMANDED LOAD RELEASE. INVESTIGATION DETERMINED THAT A FRAYED MANUAL RELEASE CABLE HAD CAUSED THIS PROBLEM. IT WAS BADLY FRAYED WHERE THE CABLE WENT INTO THE CARGO HOOK.Feb 14, 2004 · Hughes 369D · Aerial Tow EquipmentSDR CA040217009Connector · burned(CAN) BURNED CABLE CONNECTORS AT FUSELAGE GROUND CONNECTION. LOOSE/CORRODED CONNECTION. CABLE ASSEMBLY REPLACED. THIS MAY HAVE CONTRIBUTED TO EARLIER PROBLEMS WITH RCR /VOLT.REG. (CABLE K5B8N AND K5D8N)Feb 10, 2004 · Bell 206B · Electrical Power System WiringSDR CA040211004Drive Shaft · corroded(CAN) DURING A SCHEDULED INSPECTION THE MAIN ROTOR DRIVESHAFT WAS REMOVED AND INSPECTED. THE DRIVE SPLINES SHOWED EVIDENCE OF CORROSION UNDER THE COATING ON THE SPLINES. ALL SPLINES SHOWED BLACK FLAKES OF THE COATING COMING OFF AND YOU COULD SEE CORROSION UNFeb 10, 2004 · Hughes 369D · Engine/Transmission CouplingSDR CA040209005Nozzle · missing(CAN) UNIT INSTALLED IN A/C AFTER REPLACEMENT OF CRACKED CASE BY CUSTOMER US REPAIR FACILITY. AFTER INITIAL TEST RUNS IT WAS REPORTED TO HAVE VERY LOW OIL PRESSURE, AFTER NUMEROUS HOURS OF TROUBLESHOOTING (PRESSURE PUMP, SWITCH, GAUGE REPLACEMENT AND WIRING CHFeb 8, 2004 · Hughes 369D · Main Rotor GearboxSDR KBM2004F00134Structure · crackedTAILBOOM FOUND CRACK AT AFT LT TAIL ROTOR GEAR BOX MOUNT HOLE. REMOVED AND REPLACED.Feb 6, 2004 · N188TV · Bell 206B · Rotorcraft Tail BoomSDR KBM2004F00171Actuator · intermittentENGINE ANTI-ICE MOTOR INTERMITTENT. REMOVED AND REPLACED.Feb 6, 2004 · N73DP · Bell 206B · Engine Anti-Icing SystemSDR ALG2004F00003Tach Generator · inoperativeDURING TAKE OFF FROM VENICE ROTOR TACH WENT TO ZERO, LOW ROTOR LIGHT ILLUMINATED WITH LOW ROTOR HORN. RETURNED TO VENICE, LANDED AND NOTIFIED MAINTENANCE AND CUSTOMER. MAINTENANCE REMOVED AND REPLACED ROTOR TACH GENERATOR. AC GROUND RUN LEAK CHECKED AND OPSFeb 4, 2004 · N2201W · Bell 206B · Rotor Drive Indicating SystemSDR ALG2004F00006Tach Generator · failedDURING TAKE OFF, TACH WENT TO ZERO, LOW ROTOR LIGHT ILLUMINATED WITH LOW ROTOR HORN. RETURNED, LANDED AND NOTIFIED MAINTENANCE AND CUSTOMER. MAINTENANCE REMOVED AND REPLACED ROTOR TACH GENERATOR. AIRCRAFT GROUND RUN LEAK CHECKED AND OPS CHECKED GOOD.Feb 4, 2004 · N2201W · Bell 206B · Rotor Drive Indicating SystemSDR CA040302003Starter Gen · burned(CAN) WHILE IN FLIGHT PILOT NOTICED NR BEGIN TO DROP. HE INITIATED AN AUTOROTATION, HEARD A LOUD BANG, AND THE RPM CAME BACK UP. UPON LANDING FLAMES AND SMOKE WERE NOTICED IN THE ENGINE BAY. PILOT EXTINGUISHED FIRE AND DETERMINED IT WAS THE STARTER GENERATOR. Jan 31, 2004 · Hughes 369D · Starter-GeneratorSDR CA040203014Bearing Race · spalled(CAN) BEARING SPALLED AND CAUSED A CAUTION LIGHT TO COME ON.Jan 28, 2004 · Bell 206B · Main Rotor GearboxSDR CA040127002Lever · cracked(CAN) PILOT REPORTED THAT THE INLET ANTI-ICE SYSTEM WAS UNSERVICEABLE. THE ANTI-ICE VALVE WOULD NOT TO CLOSE. THE CIRCUIT BREAKER FOR THE SYSTEM ALSO TRIPPED. UPON INSPECTION MAINTENANCE FOUND THAT THE ANTI-ICE LEVER WAS CRACKED AND ELONGATED WHERE IT ATTACHESJan 26, 2004 · Bolkms BO105S · Ice/Rain Protection SystemSDR ERAA092666Case Half · damagedCOMPRESSOR CASE REC'D ON EXCHANGE WITH DAMAGED 6TH STAGE VANES. AS PER MR. GEORGE HICKS OF ALCOR, RETURNING REQUESTING WARRANTY EXCHANGE. RETURNING ON REPAIR ORDER RW-897299Jan 13, 2004 · N134EH · Bolkms BO105S · Turbine Engine Compressor SectionSDR KBM2004F00082Magnetic Seal · leakingMO 5 OUTPUT SHAFT MAGNETIC SEAL IS LEAKING OIL. REMOVED AND REPLACED.Jan 9, 2004 · N751H · Snias AS350B2 · Turbine Engine Oil SystemSDR BAQA091886Governor · inoperativeGOVERNOR HAS SLUGGISH RESPONSE IN FLIGHT. 8130 ENCLOSED PART REPLACED WITH SERVICABLE UNIT 01/09/2004.Jan 5, 2004 · N5797X · Aerosp AS355F1 · Turbine GovernorSDR ERAA093693Float Valve · leakingFORWARD COMPARTMENT LEAKING AROUND TOP OFF VALVE REC'D FROM STOCK IN REPAIRED CONDITION. LEAK FOUND DURING INFLATION. REPAIRED IAW OHSO 100-1 AMD CW INSPECTION IAW 25-60-95.Jan 5, 2004 · Bolkms BO105A · Emergency Flotation SectionSDR AUS20040107Skin · cracked(AUS) TAILBOOM CRACKED IN LOWER SKIN TO UPPER SKIN ATTACHMENT RIVET LINE LOCATED ON AFT RT SIDE.Jan 2, 2004 · Bell 206B · Rotorcraft Tail BoomSDR CA040127022Housing · cracked(CAN) ALTHOUGH NOT REQUIRED AT THIS TIME, DUE TO THE ABNORMAL WEAR ON THE IP GEAR LARGE BEARING JOURNAL THE HOUSING WAS SENT OUT FOR ALIGNMENT AND NDT INSPECTION. THE RESULTS WERE RECEIVED RECENTLY FROM TRANSPORT APPROVAL FACILITY THAT THE GEARBOX HOUSING WASDec 23, 2003 · Hughes 369D · Tail Rotor Gearbox
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