Allison 250-C20J
Service difficulty reports · 58
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 = '250C20J' 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 = '250C20J' 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 99ZZZX746Governor · leakingFUEL LEAKING FROM GOVERNOR DRAIN PORT BEYOND LIMITS. SENT FOR REPAIR. S/N 8ACK585. CONTROL NR 98-3-7.SDR 97ZZZX5131Drain Valve · crackedDURING 100-HOUR INSPECTION, BURNER DRAIN VALVE WAS FOUND CRACKED UNDER O-RING BOSS AREA.SDR 97ZZZX3835Combustion Case · crackedPILOT REPORTED HIGH TOT, LOW POWER. INSPECTED COMBUSTION CASE, FOUND CRACK ALONG SEAM WHERE HALVES WERE WELDED TOGETHER. THIS AREA IS ALSO REINFORCED WITH WIRE MESH BRAZED FOR SUPPORT. THE CRACK WAS BEHIND WIRE MESH. A LARGER REINFORCEMENT PATCH MIGHT HELPSDR 97ZZZX954Fuel Control · stuckDURING AUTOROTATION FLIGHT TRAINING, INSTRUCTER ROLLED THROTTLE TO IDLE. N1 WENT PAST 60 PERCENT N1 IDLE SPEED TO 52 PERCENT. FOUND PR/PG SHAFT NOT WORKING. SHAFT WOULD NOT FOLLOW CAM ON SHAFT TO ALLOW PR/PG VALVE TO OPEN OR PREVENT UNDERSHOOTING IDLE. RPMSDR 96ZZZX4868Governor · malfunctionENGINE RPM BLEEDS OFF. UNABLE TO ADJUST, DROOPS IN-FLIGHT. REPLACED GOVERNOR.SDR 96ZZZX2606Seal · leakUPON LANDING FOR STUDENT CHANGE, SMOKE WAS SEEN COMING FROM ENGINE COMPARTMENT. REPLACED NR 6 AND NR 7 ENGINE OIL JET SEAL.SDR 96ZZZX433Fuel Control · defectivePILOT ABORTED START WHEN TOT WENT PAST 850 DEGREES RAPIDLY DURING START ATTEMPT. TROUBLESHOOTING REVEALED FAULTY FUEL CONTROL. REPLACED FUEL CONTROL IAW ALLISON AND BELL MM. LEAK AND FUNCTIONAL CHECKS GOOD.SDR 95ZZZX6325Engine · making metalPILOT REPORTED ENGINE CHIP LIGHT. PRECAUTIONARY LANDING COMPLETED OK. EVALUATION OF ENGINE REVEALED EXCESSIVE METAL IN SCREEN AND CHIP PLUG.
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