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.
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
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR KBM2004F00212Probe · fluctuatesENGINE OIL, TEMPERATURE FLUCTUATES INFLIGHT. REMOVED AND REPLACED TEMP OIL PROBE.SDR KBM2004F00170Line · leakingHYDRAULIC LINE CHAFED AND LEAKING. REMOVED AND REPLACED.SDR KBM2004F00175Pitch Link · crackedT/R PC LINK HAS RADIAL PLAY (.008) IN THE SPHERICAL BEARING AND A CRACK IN THE SILENT BUSH. REMOVED AND REPLACED.SDR KBM2004F00174Landing Light · inoperativeLANDING LIGHT INOPERATIVE. REMOVED AND REPLACED.SDR ERAA097088Fuel Control · malfunctionedON START WOULD ACELERATE TO 62 TO 65 THEN ADVANCING THROTTLE WOULD STILL BLEED OFF. OVERHAULED IAW HONEYWELL OHM FORM 15-6026.SDR 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 ESDR KBM2004F00173Indicator · fluctuatesNG GAUGE FLUCTUATES BY I 0.5. REMOVED AND REPLACED.SDR ERAA096620Governor · splitTORQUE SPLITS GOVERNOR READS VERY FAST NR 2 ENGINE GOVERNOR COULDN'T KEEP UP. REPAIRED AND TESTED IAW HONEYWELL OHM FORM 15-1095A.SDR AC2A094952Governor · loosePOTTING COMPOUND IS BROKEN LOOSE AT SHAFT. REPLACED WITH SERVICEABLE GOVERNOR.SDR 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.SDR 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.SDR AUS20040289Bearing · lack of lube(AUS) COLLECTIVE JACKSHAFT SUPPORT BEARING FAULTY. INVESTIGATION FOUND THAT THE BEARING LUBRICANT HAD DRIED OUT.SDR 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.SDR ERAA096619Governor · splitCAUSING TORQUE SPLITS. INPUT LEVER STIFF. REPAIRED AND TESTED IAW HONEYWELL OHM FORM 15-1095A.SDR BAQA094292Pump · inoperativeFUEL PUMP INOPERATIVE. REPLACED WITH SERVICABLE UNIT. 04/29/2004SDR 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 REFUELINGSDR 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.SDR 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.SDR 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.SDR 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 ORIENTATISDR AUS20040236Shaft · worn(AUS) POWER TURBINE GOVERNOR DRIVESHAFT FAILED. INVESTIGATION FOUND THE DRIVESHAFT COUPLING SPINNING FREELY ON THE DRIVESHAFT.SDR 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.SDR 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.SDR 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.SDR 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 SDR 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 NOTIFSDR KBM2004F00172Pressure Switch · inoperativeFUEL PUMP LIGHT WILL NOT EXTINGUISH. REMOVED AND REPLACED FUEL PRESSURE SWITCH.SDR 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.SDR KBM2004F00169Radio · stuckVHF IS STUCK ON SQUALCH NR 2. REMOVED AND REPLACED.SDR 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.SDR 2004F00079Bracket · crackedRIVETED BRACKET, CONTAINING AIRCRAFT ATTACHING STUD, FOUND CRACKED IN BEND RADIUS.SDR 2004F00080Bracket · crackedRIVETED BRACKET, CONTAINING AIRCRAFT ATTACHING STUD, FOUND CRACKED IN BEND RADIUS.SDR ERAA094436Governor · malfunctionedTORQUE SPLITS; GOVERNOR LAGS. WARRANTY REPAIR ACTION TAKEN: SENT FOR REPAIR. REPAIRED AND TESTED IAW MFG OHM FORM 15-1095A.SDR 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.SDR 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)SDR 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 UNSDR 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 CHSDR KBM2004F00134Structure · crackedTAILBOOM FOUND CRACK AT AFT LT TAIL ROTOR GEAR BOX MOUNT HOLE. REMOVED AND REPLACED.SDR KBM2004F00171Actuator · intermittentENGINE ANTI-ICE MOTOR INTERMITTENT. REMOVED AND REPLACED.SDR 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 OPSSDR 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.SDR 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. SDR CA040203014Bearing Race · spalled(CAN) BEARING SPALLED AND CAUSED A CAUTION LIGHT TO COME ON.SDR 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 ATTACHESSDR 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-897299SDR KBM2004F00082Magnetic Seal · leakingMO 5 OUTPUT SHAFT MAGNETIC SEAL IS LEAKING OIL. REMOVED AND REPLACED.SDR BAQA091886Governor · inoperativeGOVERNOR HAS SLUGGISH RESPONSE IN FLIGHT. 8130 ENCLOSED PART REPLACED WITH SERVICABLE UNIT 01/09/2004.SDR 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.SDR AUS20040107Skin · cracked(AUS) TAILBOOM CRACKED IN LOWER SKIN TO UPPER SKIN ATTACHMENT RIVET LINE LOCATED ON AFT RT SIDE.SDR 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 WAS
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