Allison 250-C47B
Service difficulty reports · 1,403
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 = '250C47B' 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 = '250C47B' 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 HEEA080013Bleed Valve · failedHIGHER THAN NORMAL TOT. REPLACED WITH SERVICEABLE BLEED VALVE.SDR HEEA080014Valve · leakingLEAKS AND OPENS INTERMITTENTLY. REPLACED WITH SERVICEABLE VALVE.SDR HEEA080015Filter · bypassingENGINE OIL FILTER BYPASS INDICATOR OUT. REPLACED WITH SERVICEABLE FILTER.SDR HEEA080016Filter · bypassingCEFA LUBE SIDE BYPASS INDICATOR EXTENDED. REPLACED WITH SERVICEABLE FILTER.SDR HEEA080017Filter · bypassingBYPASS BUTTON POPPED. REPLACED WITH SERVICEABLE FILTER.SDR CA020605007Housing · mismanufactured(CAN) DURING AN OVERHAUL IT WAS FOUND THAT AN OIL PASSAGE WAS MISSING IN THE GEARBOX HOUSING BEARING BORE OF THE INPUT SHAFT DUPLEX BEARING. AFTER INVESTIGATION, IT WAS DETERMINED THAT ALL A/C FROM A/C S/N 53392 ARE AFFECTED AS ARE ALL SPARES SHIPPED SINCE AUGSDR JBZ2002F00000Head · damagedDURING INSPECTION, DAMAGE WAS NOTED ON TAIR ROTOR CROSSHEAD PITCH CHANGE ARMS CAUSED BY CONTACT WITH THE P/C LINKS.SDR HEEA079880Turbine Wheel · damagedENGINE REMOVED DUE TO VIBRATION AND MAKING LOUD NOISE. UPON INSPECTION OF TURBINE PARTS NOTED SULFIDATION ON NR 1 WHEEL LEADING EDGE BLADES. SCRAPPED PART.SDR HEEA079881Turbine Wheel · damagedENGINE REMOVED DUE TO NR 1 WHEEL DAMAGED. UPON INSPECTION OF TURBINE PARTS NOTED SULFIDATION ON NR 1 WHEEL LEADING EDGE BLADES. SCRAPPED PART.SDR HEEA079933Bleed Valve · failedENGINE PRODUCING HIGH MGT. REPLACED WITH SERVICEABLE BLEED VALVE.SDR HEEA079934Filter · bypassingENGINE OIL FILTER BYPASS POPPED. REPLACED WITH SERVICEABLE FILTER.SDR HEEA079935Filter · bypassingCEFA FILTER BUTTON BYPASSED. REPLACED WITH SERVICEABLE FILTER.SDR HEEA079937Ecu · damagedECU HAS A BROKEN CONNECTOR PIN.SDR HEEA079939Connector · corrodedFADEC FAULT AND FADEC DEGRADE LIGHT ILLUMINATED. ECU HAS CORROSION ON CONNECTOR AND HAD QUIET MODE SWITCH FAULT INDICATED. REPLACED WITH SERVICEABLE ECU.SDR HEEA079940Hmu · malfunctionedWHEN HMU IS PLACED IN MANUAL MODE, NG DECAYS TO 54.9 PERCENT WITH HORN COMING ON. REPLACED WITH SERVICEABLE HMU.SDR HEEA079955Fuel Nozzle · malfunctionedDELAYED LIGHT OFF. NOZZLE FLOW RATE TESTED AT THE MINIMUM FLOW RATE AT 125 PSIG. INSPECTED NOZZLE UNDER MAGNIFICATION, CHECK OK. RE-SHIMMED TO ADJUST FUEL RATE TO A HIGHER SETTING. UNIT TESTED SATISFACTORY.SDR CA041214010Combustion Liner · cracked(CAN) CRACK FOUND DURING REMOVAL FOR UNRELATED TURBINE CEB. NO CRACKS ALLOWED IN SUBJECT AREA.SDR ALGA079297Gear · spalledGEARBOX WAS REMOVED FOR CORRODED STUDS, DURING INSPECTION FOUND SPALLING ON PINION GEAR TEETH.SDR ALGA079294Pinion Gear · galledFOUND EXCESSIVE GALLING ON PINION GEAR, SPALLING AND GALLING ON T/M GEAR. BOTH GEARS HAVE VERY UNUSUAL WEAR PATTERN. ENTRY MADE BY RNBSDR ALGA079295Gear · galledFOUND EXCESSIVE GALLING ON PINION GEAR, SPALLING AND GALLING ON T/M GEAR. BOTH GEARS HAVE VERY UNUSUAL WEAR PATTERN. ENTRY MADE BY RNB.SDR ALGA079296Bearing · galledT/M JOURNAL AND INNER RACE FOUND EXCESSIVE GALLING, CAUSING METAL CONTAMINATION.SDR TI12002F00002Bearing · separatedAN ABNORMAL INTERMITTENT VIBRATION WAS FELT DURING CRUISE FLIGHT. THE CAUSE WAS DETERMINED TO BE THE OUTBOARD MAIN ROTOR GRIP ELASTOMERIC BEARING ON ONE BLADE GRIP TO HAVE SEPARATED. THE OTHER THREE ELASTOMERIC BEARING WERE INSPECTED, AND FOUND TO HAVE VARIOSDR HEEA078705Liner · crackedWORN NOZZLE FERRULE AND CRACKS IN VARIOUS WELDMENTS.SDR 2002FA0000706Gear · rough(TM GEAR) UPON VISUAL INSPECTION OF PART. FOUND EXTREMELY ROUGH GEAR TEETH EDGES AT RADIUS ON FORWARD TEETH. SENT FOR WARRANTY.SDR ALG2002F00035Bearing · galledENGINE WAS REMOVED DUE TO CHIP LIGHT. GEARBOX WAS DISASSEMBLED TO FIND SOURCE OF METAL. UPON REMOVAL OF T/M JOURNAL AND INNER RACE FOUND EXCESSIVE GALLING, CAUSING METAL CONTAMINATION. ASSURE BEARINGS AND INNER RACE CAN WITH STAND HIGH LOADING CAPACITY.SDR ALG2002F00039Pinion Gear · wornENGINE WAS REMOVED DUE TO CHIP LIGHT. GEARBOX WAS DISASSEMBLED TO FIND SOURCE OF METAL. FOUND EXCESSIVE GALLING ON PINION GEAR, SPALLING AND GALLING ON T/M GEAR. BOTH GEARS HAVE VERY UNUSUAL WEAR PATTERN. ASSURE PROPER MESHING AND MACHINING OF GEAR TEETH SDR ALG2002F00040Pinion Gear · wornENGINE WAS REMOVED DUE TO CHIP LIGHT. GEARBOX WAS DISASSEMBLED TO FIND SOURCE OF METAL. FOUND EXCESSIVE GALLING ON PINION GEAR, SPALLING AND GALLING ON T/M GEAR. BOTH GEARS HAVE VERY UNUSUAL WEAR PATTERN. ASSURE PROPER MESHING AND MACHINING OF GEAR TEETH ASDR ALG2002F00043Gear · galledENGINE WAS REMOVED DUE TO CHIP LIGHTS. UPON VISUAL INSPECTION FOUND CAUSE OF METAL DUE TO GALLING T/M AND PTO GEARS. DUE TO T/M JOURNAL SUPPORT STUDS BACKING OUT OF COVER AN UNUSUAL WEAR PATTERN OF SPALLING AND GALLING OCCURRED ON GEAR TEETH. THIS COULD HAVSDR ALG2002F00044Cover · wornENGINE HAD CHIP LIGHTS. UPON DISASSEMBLY OF GEARBOX FOUND T/M JOURNAL SUPPORT STUDS BACKED OUT OF COVER. FOUND T/M GEAR, BEARING JOURNAL SHAFT AND SUPPORT LOOSE IN COVER ASSEMBLY. FOUND ALL 4 STUDS ON JOURNAL SUPPORT PULLED OUT AND 1 EACH WITH NO THREADS LESDR AO52002F00000Float · corrodedFLOAT WAS INSPECTED, AND WAS DETERMINED TO BE EXTREMELY CORRODED AND IN AN IMMANENT FAILURE CONDITION.SDR ALG2002F00064Pinion Gear · failedUPON DISASSEMBLY OF GEARBOX DUE TO CHIP LIGHT. FOUND EXCESSIVE GALLIN ON PINION AND T/M GEARS. T/M GEAR HAD ROUGH EDGES CAUSING PINION GEAR TO GALL. ASSURE PROPER MACHINING AND MESHING OF GEAR TEETH AT FACTORY.SDR ALG2002F00047Pinion Gear · wornUPON DISASSEMBLY OF GEARBOX. UPON DISASSEMBLY OF GEARBOX FOUND EXCESSIVE GALLING AND SPALLING AND WEAR IN GEAR TEETH AND UNEVEN WEAR AND HEAVY SPALLING OF T/M GEAR TEETH. ASSURE PROPER MESHING OF GEAR TEETH.SDR ALG2002F00048Cover · stripped(GEARBOX COVER) UPON DISASSEMBLY OF GEARBOX, FOUND 1 EACH STRIPPED STUD AND 2 EACH LOOSE STUDS AT 2.5 BEARING CAGE MATING SURFACE, ALSO FOUND 2 EACH STUDS AT TM SUPPORT JOURNAL LOOSE. NOTE: AT LOCATION OF STRIPPED STUD ON T.5 BEARING CAGE SURFACE, FOUND NO TSDR ALG2002F00037Gear · spalledGEARBOX WAS RECEIVED FOR CORRODED STUDS. UPON INITIAL VISUAL INSPECTION FOUND SPALLING PINION GEAR TEETH. EXCESSIVE SPALLING AND LIGHT GALLING ON GEAR TEETH DUE TO IMPROPER MESHING OF TM AND PINION GEARS. ASSURE PROPER MESHING OF GEAR TEETH AT FACTORY.SDR AUS20020414Bolt · failed(AUS) MAIN DRIVESHAFT, FLEXOR BOLT MISSING. INVESTIGATION FOUND THAT THE BOLT HAD FRACTURED INTO TWO PIECES.SDR ALG2002F00041Pinion Gear · galledGEARBOX WAS REMOVED DUE TO FWU BORE DAMAGE. UPON INSPECTION OF CHIP DETECTORS, FOUND METAL ON BOTH PLUGS. AFTER DISASSEMBLY FOUND EXCESSIVE GALLING ON TM AND PINION GEARS CAUSE FOR METAL. METAL CONTAMINATION WAS GENERATED FROM UNFINISHED MACHINING OF TM GEASDR ALG2002F00042Gear · mismanufacturedGEARBOX WAS REMOVED DUE TO FWU BORE DAMAGE. UPON INSPECTION OF CHIP DETECTORS, FOUND METAL ON BOTH PLUGS. AFTER DISASSEMBLY FOUND EXCESSIVE GALLING ON TM AND PIINION GEARS CAUSE FOR METAL. METAL CONTAMINATION WAS GENERATED FROM UNFINISHED MACHINING OF TM GESDR R7M5342235164Indicator · inoperativeTORQUE INDICATOR UNIT INOPERATIVE. WILL NOT POWER DOWN CORRECTLY AND READS 5 PERCENT HIGHER THAN ECU. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR R7MR534223515Blade · out of balanceTAIL ROTOR BLADE HAS AN OUT OF BALANCE CONDITION. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR 2002FA0000708Gear · mismanufacturedUPON VISUAL INSPECTION OF NEW PARTS FROM STOCK, IMPROPER AND UNFINISHED MACHINING AND MESHING OF GEAR TEETH AT RADIUS.SDR R7M5344635168Bearing · debondedMAIN ROTOR BEARING DEBONDING. REPLACED WITH NEW UNIT, CORRECTED.SDR R7M5342235163Indicator · stuckTORQUE INDICATOR INOPERATIVE, INDICATOR STUCK AT 82 PERCENT, THEN WENT TO FULL DEFLECTION, THEN WENT DEAD. REPLACED WITH NEW UNIT, CORRECTED PROBLEM.SDR R7M5342235162Housing · frettedHOUSING TO ENGINE MOUNT IS EXCESSIVELY FRETTED. HOUSING MOUNT BOLTS WERE NOT LOOSE AS THOSE FOUND IN AC. REPLACED WITH NEW UNIT CORRECTED PROBLEM.SDR R7M2002F00013Gps · inoperativeGPS 430 UNIT INOPERATIVE. UNIT WILL NOT VDR LOCK IN VOR FREQUENCIES, ILS OR VOR STATIONS. MESSAGE INDICATES CDI INOPERATIVE WHEN SWITCHING TO VLOC MODE. ALSO, UNIT WILL NOT INDICATE GPS MODE ON THE SCREEN (LOWER LT CORNER). REPLACED WITH LOANER UNIT CORRESDR HEEA078512Harness · failedFADEC FAILURE DUE TO SHORT BETWEEN PINS U & V OF HMU CONNECTOR. REPLACED WITH SERVICEABLE HARNESS.SDR HEEA078513Harness · failedFADEC FAIL AND FADEC FAULT LIGHTS KEEP COMING ON. REPLACED WITH SERVICEABLE HARNESS. TO BE SENT TO BELL HELICOPTER TEXTRON FOR CREDIT.SDR HEEA078529Igniter · failedDELAYED STARTING. SCRAPPED LOCALLY DUE TO WORN BEYOND LIMITS.SDR ALG2002F00028Cowling · corrodedREBUILD. EXCESSIVE CORROSION, CRACKING AND WEAR ON COWLING AND INTAKE SHELF.SDR HEEA078252Engine · failedFADEC FAILURE ON ENG START. TOT MAXED AT 1063 DEGREES. RETURNED ENGINE TO ROLLS ROYCE FOR REPAIRSDR HEEA078254Ecu · failedFADEC FAILURE ON ENG. START. T.O.T. MAXED AT 1063 DEGREES. RETURNED TO ROLLS ROYCE
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