Allison 250-C30P
Service difficulty reports · 646
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 = '250C30P' 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 = '250C30P' 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 98ZZZX819Scroll · crackedDURING SCHEDULED 100-HOUR INSPECTION, DISCOVERED COMPRESSOR SCROLL CRACKED IN ABOUT 2 O'CLOCK AREA OF RIGHT SHOULDER IN THE CURVATURE NEAR THE MATING SURFACE TO THE COMPRESSOR. THIS WAS A REPAIRED SCROLL THAT HAD BEEN INSTALLED DUE TO A PREVIOUSLY CRACKED SCRSDR HEEA0012376Coupling · wornENGINE REMOVED DUE TO TURBINE OVERHAUL. UPON INSPECTION OF TURBINE PARTS NOTED: INTERNAL SPLINES BELOW SERVICEABLE LIMITS ON N1 COUPLING (FAILED NO-GO GAUGE) INSTALLED A NEW N1 COUPLING.SDR HEEA0012372Metering Valves · unbondedMETERING VALVE SLEEVE ASSEMBLY UNBONDED. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.SDR HEEA0012373Bellows · defectiveACCELERATION BELLOWS DEFECTIVE. INOPERATIVE. SCRAPPED PART. REPLACED WITH SERVICEABLE PART.SDR HEEA0012374Exhaust Collecto · crackedENGINE REMOVED DUE TO NR3 & NR4 WHEEL CYCLES. UPON INSPECTION OF TURBINE PARTS NOTED: COATING FLAKING FROM EXHAUST COLLECTOR LAB SEAL FLANGE AND CRACKED BEYOND SERVICEABLE LIMITS. INSTALLED A STANDARD AERO OVERHAULED EXHAUST COLLECTOR.SDR HEEA0012174Fuel Control · failedWOULD NOT WORK IN CUTOFF MODE. FUEL ALWAYS AVAILABLE TO ENGINE. REPLACED WITH SERVICEABLE FUEL CONTROL.SDR HEEA0012189Pump · wornFOUND DRIVE SHAFT SPLINES AND PUMP GEAR SPLINES WORN EXCESSIVELY.SDR HEEA0012191Pump · failedFUEL PUMP FAILED SPLINE BACK LASH TEST, AS PER CEB A73-3091.SDR HEEA0012192Pump · failedFUEL PUMP FAILED SPLINE BACK LASH TEST, AS PER CEB A73-3091.SDR HEEA0012193Pump · leaksRAN UNIT ON BENCH AS RECEIVED. FOUND EXCESSPUMP HAS EXCESSIVE SEAL DRAIN LEAKAGE.SDR 98ZZZX1274Garlock Seal · leakingNEW PTO SEALS INSTALLED IN REPAIRED GEARBOX ON 9-23-97. ENGINE WAS ASSEMBLED AND TESTED ON 11-07-97. DURING TEST RUN, FOUND FORWARD PTO SEAL LEAKING. NEW PTO SEALS ARE LARGER IN DIAMETER THAN (RED) PTO SEALS PN 524919. UPON INSTALLATION, SEALS ARE EXTREMELSDR HEEA0011187Actuator · failedACTUATOR WILL NOT MOTOR IN EITHER DIRECTION.SDR HEEA0011194Exciter · intermittentEXCITER INTERMITTENT SPARK.SDR AU971392Fitting · cracked(AUS) AFT FUSELAGE LONGERON FITTING CRACKED.SDR HEEA0011031Turbine · defectiveENGINE REMOVED DUE TO HIGH OIL CONSUMPTION. INSTALLED A SERVICEABLE TURBINE.SDR 97ZZZX4426Scavenge Tube · chafedUPON DISASSEMBLY OF ENGINE FOR T/C, FOUND SCAVENGE TUBE HAD EXCESSIVE CHAFING FROM CONTACT WITH COMPRESSOR SCROLL. EXCESSIVE CHAFING ON TUBE DUE TO MISALIGNMENT CAUSING CONTACT WITH SCROLL. SUBMITTER STATED ENSURE PROPER CLEARANCE BETWEEN NR 1 SCAVENGE TUBE SDR HEEA0010553Bearing Housing · mis mfgRECEIVING INSPECTION REVEALED; PIN SLOT WALL THICKNESS MEASURES .030 - .040 OVER SPECS (.070 - .060) ON #1 BEARING HOUSING. INSTALLED A SERVICEABLE #1 BEARING HOUSING.SDR HEEA0010538Coupling · damagedENGINE REMOVED DUE TO TURBINE OVERHAUL. UPON INSPECTION OF TURBINE PARTS NOTED: MFG. TOOLING DAMAGED BEYOND SERVICEABLE LIMITS ON N1 COUPLING INTERNAL SPLINES. INSTALLED NEW N1 COUPLING.SDR 97ZZZX3430Bearing · failedBEARING FAILED IN-FLIGHT, CAUSED CHIP LIGHT. OIL FLOWED ALL NOZZLES AND OIL LINES AT DISASSEMBLY. ALL CLEAR. ALL OTHER BEARINGS, VISUAL OK.SDR 97ZZZX3538Coupling · failed testN2 COUPLING FAILED SPLINE TEST.SDR HEEA0010512Fuel Nozzle · errodedFUEL NOZZLE REMOVED DUE TO ENGINE NOT STARTING. INSPECTION OF FUEL NOZZLE PARTS REVEALED: ERODED BEYOND SERVICEABLE LIMITS ON FUEL NOZZLE INNER SPRAY TIP. INSTALLED A PHI OVERHAULED FUEL NOZZLE S/N 0729.SDR 97ZZZX3664Fuel Control · malfunctionDELAYED STARTS, FAST TOT RISE, NO MODULATE OR RE-LIGHT. REMOVED AND REPLACED FCU.SDR HEEA0010112Gearshaft · stepwearENGINE REMOVED DUE TO 2000 HOUR TURBINE OVERHAUL AND N1 SHAFTING INSPECTION. UPON INSPECTION OF COMPRESSOR PARTS NOTED: STEP WEAR BEYOND SERVICEABLE LIMITS ON SPUR GEARSHAFT AFT SPLINES. INSTALLED A NEW SPUR GEARSHAFT.SDR HEEA0010002Nozzle · defectiveTURBINE DISASSEMBLED DUE TO N1 DRAG ON TEST CELL. UPON INSPECTION OF TURBINE PARTS NOTED: LIFTING ON #2 NOZZLE 2ND STAGE TIP PATH. INSTALLED AN OVERHAULED #2 NOZZLE.SDR HAIHEEA9426Nozzle · seal faultyRECEIVING INSPECTION REVEALED: #2 SEAL SEPARATING ON #2 NOZZLE AS MARKED.SDR 98ZZZX1268Engine · malfunctionPILOT REPORTED THAT AIRCRAFT YAWED IN CRUISE FLIGHT AND THE ROTOR RPM DROPPED AND RECOVERED TO 96 PERCENT. RETURNED TO OFFSHORE PLATFORM WITH 96 PERCENT ROTOR RPM. AFTER LANDING AND EXERCISING COLLECTIVE, THE ROTOR RPM RETURNED TO 100 PERCENT. MAINTENANCE CSDR 97ZZZX2123Compressor · crackedDURING ROUTINE VISUAL INSPECTION FOUND COMPRESSOR SCROLL CRACKED AT 7:00 O'CLOCK POSITION LOOKING FORWARD.SDR HAIHEEA9217Gearshaft · stepwearENGINE REMOVED DUE TO #1 BEARING FAILURE. UPON INSPECTION OF COMPRESSOR PARTS NOTED: STEP WEAR BEYOND SERVICEABLE LIMITS ON SPUR ADAPTER GEARSHAFT AFT SPLINES. INSTALLED A NEW SPUR ADAPTER GEARSHAFT.SDR NYBA9710Engine Assy · defectiveUNABLE TO START ENGINE. REPLACED FCU/FUEL NOZZLE / COMBUSTION LINERSDR NYBA9715Turbine Assy · defective# 8 BEARING HEAT SHIELD MISSING A LARGE PORTION. REPLACED TURBINE ASSYSDR 97ZZZX1239Compressor · crackedDURING DAILY INSPECTION OF ENGINE ASSY, A CRACK WAS DISCOVERED ON THE RIGHT UPPER SIDE OF THE SCROLL, 1.50 INCHES IN LENGTH.SDR CA970310002Nodal Beam · damaged(CAN) PURGE VALVE CANNON PLUG FOUND TRAPPED BETWEEN NODAL BEAM AND UP STOP. NODAL BEAM AND STOP DAMAGED BEYOND MANUFACTURERS LIMITS.SDR CA970304002Battery · dead(CAN) BATTERY WOULD NOT ACCEPT CHARGE.SDR HEEA979120Shield · crackedRECEIVING INSPECTION REVEALED: CRACKES ON #3 NOZZLE SHIELD AS MARKED.SDR HEEA978904Nozzle · out of specRECEIVING INSPECTION REVEALED: INNER AIRFOIL RING PARENT METAL OUT OF SPECS PER AMC-OIL 17 AND APERATURE CARDS ON #1 NOZZLE AS MARKED. ACTUAL .023 - .087 (B.P. SPECS .0495 - .0515) INSTALLED A NEW NOZZLE.SDR 97ZZZX521Energy Ring · worn tangsTHE 4 TANGS ON THE ENERGY ABSORBING RING ARE WORN ON WIDTH AND ONE IN HEIGHT AND WORN INTO THE PT SUPPORT. SUBMITTER STATES THIS HAPPENS ON ALL C30 TURBINES. NEEDS MORE SUPPORT.SDR 97ZZZX522Bearing · wornINSP FOUND OD OF BEARING BELOW MIN DIMENSION AND INTERNAL CLEARANCE TOO MUCH. 0.0034 INCH MAX AND BEARING WAS 0.00364 INCH. ALLOWED STATOR SEAL TO BE RUBBED BY 35/37 ROTATING SEAL.SDR HEEA968773Support · mismanufacturedRECEIVING INSPECTION REVEALED: I.D. MEASURED .049-.071 BELOW SPECS ON G.P. SUPPORT AT #2 NOZZLE TANG SLOTS. SPECS (7.63) #2 NOZZLE WILL NOT FIT INTO SUPPORT. INSTALLED DALLAS AIRMOTIVE OVERHAULED G.P. SUPPORT.SDR 97ZZZX937Drive Shaft · wornDURING 1500 HOUR FUEL PUMP DRIVE SHAFT INSPECTION FOUND P/N 216002 DRIVE SHAFT WORN AND P/N 215988-1 GEAR WORN BEYOND LIMITS. THIS UNIT WOULD PROBABLY NOT HAVE MADE OVERHAUL WITHOUT RAILING.SDR 97ZZZX936Fuel Control · leakEN ROUTE, STRONG SMELL OF FUEL WAS NOTICED IN THE COCKPIT. INITIALLY SUSPECTED ONE OF THE PASSENGERS WHO HAD PREVIOUSLY REFUELED AIRCRAFT HAD GOTTEN FUEL ON HIS CLOTHING. AFTER LANDING, FUEL WAS OBSERVED COMING FROM FUEL CONTROL UNIT. FOUND FUEL CONTROL LEASDR HEEA968711Shroud Housing · over specsRECEIVING INSPECTION REVEALED: AFT PILOT MEASURE .004 TO .006 OVERSPECS ON SHROUD HOUSING. (SPEC 10.199 - 10.200)SDR HEEA968602Shroud Housing · under sizeRECEIVING INSPECTION REVEALED; UNDERSIZED THROAT CLEARANCE ON SHROUD HOUSING. INSTALLED A NEW SHROUD HOUSING.SDR HEEA968603Comb Liner · mis mfgWHILE INSTALLING NEW COMBUSTION LINER FOR TROUBLESHOOTING TORQUE FLUX AT HIGH POWER SETTINGS. WAS UNABLE TO INSTALL IGNITOR - DUMMY PLUG AND FUEL NOZZLE AT SAME TIME. FOUND MISALIGNMENT BETWEEN ALIGNMENT PIN AND IGNITOR BOSS (APPROX. 1/4")WHEN COMPARED WITH SDR HEEA968607Support · defectiveRECEIVING INSPECTION REVEALED: COATING LIFTING ON G.P. SUPPORT SEAL BORE ID. INSTALLED A DALLAS AIRMOTIVE OVERHAULED G.P. SUPPORT.SDR CA961203010Bearing · worn(CAN) UNUSUAL PLAY IN SWASHPLATE. INSPECTION FOUND TEFLON ON BEARINGS WORN AWAY.SDR HEEA968478Gearshaft · defectiveENGINE REMOVED DUE TO IMPELLER RETIREMENT. UPON INSPECTION OF COMPRESSOR PARTS NOTED THE FOLLOWING: FAILED GO,NO-GO GUAGE INSPECTION ON SPUR ADAPTER GEARSHAFT FORWARD AND AFT SPLINES. INSTALLED NEW PART.SDR 96ZZZX5824Bearing · failedENGINE WAS RECEIVED FOR METAL GENERATION. FOUND THE NR 1 BEARING HAD FAILED (SPALLING ON BALLS AND RACES; SEPARATOR IN PIECES).SDR HEEA968410Collector · crackedTURBINE REMOVED DUE TO OVERHAUL. UPON INSPECTION NOTED THE FOLLOWING: EXCESSIVE CRACKS BEYOND SERVICEABLE LIMITS ON EXHAUST COLLECTOR AS MARKED. REPLACED DISCREPANT PART.SDR 96ZZZX5588Filter Element · crackedFILTER ELEMENT CRACKED WHERE END CAP IS ATTACHED TO ELEMENT. SOME PIN HOLES AND CORROSION AROUND FILTER TO END CAP BOND. ELEMENT MAY HAVE BEEN FROM ENGINE OPERATED IN SALT LADEN ATMOSPHERE AND INSTALLED WHEN ENGINE WAS TORN DOWN FOR INSPECTION BY OUTSIDE VENSDR HEEA968394Bearing · making metalENGINE REMOVED DUE TO METAL IN OIL. UPON INSPECTION OF GEARBOX PARTS NOTED: (1) METAL SLIVERS ON #3 BEARING INNER RACE (2) CRACKED ROLLER RETAINER & METAL SLIVERS ON #4 BEARING INNER RACE. INSTALLED NEW BEARINGS. SEE MMIR# HEEA0008395 FOR #4 BEARING INFORM
Back to Allison 250-C30P