Allison 250-C40B
Service difficulty reports · 87
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 = '250C40B' 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 = '250C40B' 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 QMLA2019092619076Filter · abnormalDURING CLIMB OUT, PILOT TURNED ON AIR CONDITIONING SYSTEM AND CABIN FILLED WITH SMOKE. PILOT IMMEDIATELY RETURNED BACK TO BASE AND MAINTENANCE WAS ON SITE TO INSPECT. UPON INVESTIGATION, IT WAS NOTICED THAT THE INLET BARRIER FILTERS HAS JUST BEEN REPLACED WITHSDR QMLA2018101118110Mount · crackedDURING PREFLIGHT INSPECTION, FOUND RIGHT HAND TRANSMISSION MOUNT ASSEMBLY P/N 230-031-619-101 CRACKED AT THE EAR FOR THE LATERAL ISOLATION MOUNT ATTACH POINT.SDR K2DA2020012220Blade · damaged
AT 1104 HST, WAS AT APPROXIMATELY N19.54`02" W156.06`58" TRANSITIONING THROUGH PHKO CLASS D AIRSPACE AT 1350`MSL AND 125 KIAS ON A HEADING OF 165 DEGREES, EN ROUTE TO FLY COUNTER-CLOCKWISE AROUND THE BIG ISLAND. WITH AUTOPILOT ENGAGED AND A COMMANDED CLIMB TSDR 2PJA20180717001Transducer · failedON TAKEOFF, DURING CLIMB NR 2 HYDRAULIC PRESSURE REDUCED TO 0 PSI. PAGE 2 CAUTION WAS ILLUMINATED. AIRCRAFT DIVERTED TO KMTN. MAINTENANCE REMOVED AND REPLACED THE NR 2 HYDRAULIC TRANSDUCER. AIRCRAFT WAS GROUND RAN AND OP CHECKED GOOD, THEN RETURNED TO SERVICE.SDR Q6HA2016092900001Wire · brokenWITH LANDING GEAR SELECTED DOWN THE LANDING GEAR DOES NOT EXTEND INTERMITTENTLY. WARNING HORN DOES SOUND WITH GEAR HANDLE DOWN AND GEAR UP. WIRE G11A22 FOUND BROKEN AT LANDING GEAR SWITCH 2AS18 ON CONTACT 2NC. THIS PROVIDES GROUND TO EXTEND SIDE OF LANDING GSDR QMLA201601316010Engine · making metalENGINE REMOVAL DUE TO CHIP EVENTS IN SUMP CHIP DETECTOR.SDR CA151102009Tube · damaged(CAN) THE FOLLOWING HAS BEEN REPORTED TO MFG: IN-FLIGHT SHUTDOWN. THE ACFT MADE A SAFE LANDING AND NO ADDITIONAL DAMAGE WAS DONE TO THE ACFT OR PERSONNEL. THE LOWER SHROUD ON THE FMM CRACKED AROUND 1 OF THE HIGH PRESSURE FUEL FITTINGS WHICH GOES INTO THE BOTSDR HEER20150825656Bearing · spalledENGINE REMOVED 8-12-15 DUE TO OVERTORQUE. REPLACED TURBINE NR 5 BEARING DUE TO DEEP SCRATCHES ON BALLS AND POSSIBLE SPALLING ON BEARING OUTER RACE. INSTALLED NEW NR 5 BEARING. PART WILL BE RETURNED TO MFG FOR FURTHER EVALUATION.SDR CA150827010Shear Restraint · debonded(CAN) ACFT EXPERIENCE HIGH LATERAL VIBRATION IN FLIGHT. ACFT RETURNED TO BASE AND VISUAL INSPECTION REVEALED ELASTOMERIC DEBONDED ON SHEAR RESTRAINT.SDR CA150429014Engine · malfunctioned(CAN) ACFT REPORTED TO HAVE SUFFERED A HARD LANDING FOLLOWING A PROBLEM WITH THE NR 1 ENGINE. A/C SKIDS ARE SPLAYED.SDR CA150505001Sun Gear · faulty(CAN) FINDINGS BY STEPS OF OCCURRENCE: A CRACK SOUND DURING HOVER HEARD BY EVERYONE INCLUDING PASSENGERS. BOTH ENGINES NP POWER TURBINE RPM REACHED TO PERCENT 119.6, NR RPM PERCENT 119.7. DURING HARD LANDING, CROSS-TUBES BENT AND AFT FUSELAGE TOUCHED THE GROSDR CA150421007Nut · damaged(CAN) TWO ANCHOR NUTS WERE FOUND BROKEN, CRACKED AND MISSING THE RETENTION SPRING.SDR QMLA2015021215010Strip · crackedDURING BLADE REMOVAL, FOR 100HR YOKE INSPECTION, FOUND CRACKS IN ABRASION STRIP ON LE OF BLADE SN A-2180. DETERMINED CRACK IS OUT OF LIMITS IAW THE MM.SDR QMLA2014061614074Yoke · crackedUPON INITIAL INSPECTION FOUND FOUR CRACKS IN MAIN ROTOR YOKE LOCATED BETWEEN STATION 26 & 31. CRACKS ARE 2 TO 4.5 INCHES IN LENGTH. AFTER REMOVING SEALANT FROM KNOWN CRACKS FOUND ADDITIONAL CRACKING UNDERNEATH MAKING FIVE CRACKS ON ARM. THERE ARE THREE CRACSDR CA131121001Engine · failed(CAN) DURING AN OFFSHORE FLIGHT, THE NR 1 ENGINE EXPERIENCED A SUMP CHIP LIGHT, THEN A LOUD BANG AND LOSS OF OIL PRESSURE. ENGINE WAS SECURED AND THE ACFT FLOWN FOR AN OEI LANDING. INSPECTION OF THE ACFT FOUND SHRAPNEL DAMAGE TO THE ACFT TAILBOOM AND 1 T/RSDR QMLA2013110613159Yoke · crackedWHILE PERFORMING 150 HR INSPECTION OF MAIN ROTOR YOKE, FOUND SIX NEW CRACKS SINCE LAST INSPECTION. SMALLEST CRACK WAS 0.5 AND LONGEST CRACK 3.375. FOUR ON TOP OF YOKE, TWO ON EACH ARM AND THREE ON BOTTOM, TWO ON ONE SIDE AND ONE ON THE OTHER.SDR QMLA2013090413126Stud · brokenSTUD HAD SHEARED OFF OF THE TAIL ROTOR GEARBOX MOUNTING FLANGE AT ONE O`CLOCK POSITION. NOTICED POSITIONS THREE, FIVE AND ELEVEN O`CLOCK STUDS WERE LOOSE AS WELL. REMOVED TAIL ROTOR GEARBOX FROM THE ACFT.SDR CA130618008Control Tube · cracked(CAN) DURING A ROUTINE ANNUAL INSPECTION, WHILE INSPECTING THE TAIL ROTOR FLIGHT CONTROLS IN THE BELLY OF THE ACFT, SOME CHAFING WAS NOTED ON CONTROL TUBE, PN 430-001-007-101 AT THE SECOND BULKHEAD AFT OF THE CONNECTING FORWARD CLEVIS AND BULKHEAD. UPON DISASSSDR CA130325016Control Tube · broken(CAN) PILOT LOST THE TAIL ROTOR CONTROL DURING FLIGHT. ROD END BROKEN.SDR Q2HA20121109001Fitting · looseON OCTOBER 26, 2012 THE NR 1 ENGINE FUEL NOZZLE WAS REMOVED AND RESHIMMED FOR AN INTERMITTENT STARTING PROBLEM. THE MAINTENANCE ACTION WAS COMPLETED AND SIGNED OFF IN THE AIRCRAFT LOGBOOK, HOWEVER NO SUBSEQUENT CHECK RUN WAS ACCOMPLISHED ON THE ENGINE PRIOR TSDR QMLA2012050912076Engine · making metalNR 1 ENGINE SCAVENGE CHIP LIGHT ILLUMINATED DURING START UP. REMOVED SCAVENGE CHIP DETECTOR AND VISUALLY INSPECTED. FOUND MASS QUANTITIES OF METAL ON THE CHIP DETECTOR. REMOVED ACFT FROM SERVICE.SDR QMLA2012021412024Static Port · shortedPILOT REPORTED ELECTRICAL FUMES IN COCKPIT. FOUND STATIC PORT SHORTEDSDR CA061023003Control Tube · scratched(CAN) CONTROL TUBE, PN 222-001-021-145 WAS INSTALLED ON WRONG SIDE OF PILOT CYCLIC STICK LOWER LEVER CAUSING A FOULING CONDITION WITH THE ACFT STRUCTURE IN THE MOST LT CYCLIC TRAVEL.SDR AC2R0CT03062011Shaft · crackedOUTER SHAFT FOUND CRACKED AT TT 259.0 AT DISASSEMBLY. ENGINE WAS REMOVED FOR SMOKING ON SHUTDOWN AND VXP INDICATED VIBRATIONS TRENDING UP. RAN ON TEST CELL AND ABORTED RUN DUE TO EXCESSIVE VIBRATIONS NOTED IN ENGINE'S COMPRESSOR AND DID FIND SMOKING ON SHUTDSDR CA100812001Rod End · leakingMFG RECEIVED REPORT OF A 430 COLLECTIVE FLIGHT CONTROL MALFUNCTION DURING PREPARATION FOR TAKEOFF. EVENT OCCURED ON GROUND. AFTER ACFT WAS SHUTDOWN A OIL LEAK WAS OBSERVED FROM THE SERVO.SDR QMLA2010051810014Hanger Assy · shearedDURING ROUTINE INSPECTION DISCOVERED MOUNTING FLANGE BROKE OFF OF THE NR1 TAIL ROTOR DRIVE SHAFT HANGER BRG. PERFORMED INSPECTION OF THE SURROUNDING AREA AND REPLACED HAGER BRG ASSY.SDR 1E9R201001Blade · crackedACFT WAS FLOWN TO FACILITY, REPORTED DEBONDING OF TAIL ROTOR BLADE L/E AT TIP OF BLADE. UPON FURTHER INVESTIGATION OF BLADE, IT WAS DISCOVERED THAT THE ROOT END OF THE BLADE HAD CRACKED AND THE SKIN WAS SEPARATED FROM THE BLADE END. INFO SUBMITTED TO MFG PROSDR CA100122007Stud · loose(CAN) QTY (2) STUDS PARTIALLY BACKED OUT OF THE THREADED HOLES OF THE 2-1/2 BRG CAGE MOUNTING BOSS. STUDS BACKED OUT APPROX 1 AND 2 THREADS RESPECTIVELY. NUTS ON THESE STUDS DID NOT HAVE ANY REMAINING TORQUE ON THEM. NUTS ON THE REMAINING STUDS WERE ALSO LOOSDR AC2A2009090183074Unknown · malfunctionedSIX MINUTES OUT OF VENICE, LA, TRANSMISSIONSDR QMLR MC708Blade · crackedFOUND TAIL ROTOR BLADE ROOT TO BE CRACKED IN VICINITY OF PITCH HORN.SDR AC2A2009053181959Pickup · malfunctionedENROUTE, YELLOW M/ECU2 INDICATOR, WHITE ECU INDICATOR ABOVE THE NR 2 ENGINE TQ AND NP INDICATION FLUCTUATED FOR ABOUT FIVE MINUTES BEFORE IT RETURNED TO NORMAL INDICATION. ALTERED ROUTE FOR A DIRECT FLIGHT. SHUT DOWN ACFT AT HELIPORT AND NOTIFIED MX. REPLSDR AC2A2009050381739Warning Light · illuminatedFLYING FROM THE HERCULES 120 TO 299B AND THE NR1 M/ECU CAUTION LIGHT ILLUMINATED IN FLIGHT, RETURNED TO DEPARTURE AND SHUTDOWN.SDR AC2A2009042481568Ecu · faultyIN FLIGHT, YELLOW M/ECU2 LIGHT ILLUMINATED, FOLLOWED BY A WHITE ECU LIGHT ABOVE THE NR2 ENGINE TORQUE. RETARDING THE THROTTLE TO IDLE HAD NO EFFECT ON THE NR2 NP. TO REDUCE THE NR2 NP TO IDLE, THE ECU HAD TO BE PUT INTO MANUAL.SDR AC2A2009031181030Warning Message · illuminatedTAKING OFF FROM SP 77A TO WD 109 AND THE 1 M/ECU 2 LIGHT ILLUMINATED ALONG WITH THE ECU LIGHT ABOVE THE NR 1 TORQUE AND THE FADEC HORN. WENT TO THE MANUAL MODE ON THE NR 1 AND RETURNED TO DEPARTURE, LANDED AND SHUTDOWN.SDR AC2A2009031081018Warning Message · illuminatedLANDED AT 0945 WHEN THE 1 M/ECU 2 LIGHT ILLUMINATED IN FLIGHT. MX CAME OUT TO THE ACFT & CLEARED THE FAULT WITH COMPUTER. TOOK OFF AT 1025 AND 5 MINUTES INTO THE FLIGHT THE M/ECU 2 LIGHT ILLUMINATED & THEN IT ILLUMINATED WITH THE 1 M/ECU 2. TURNED AROUND, BACSDR 2009FA0000275Nut · looseDURING COURSE OF SCHEDULED INSP, NUT RETAINING THE TAIL ROTOR PITCH CHANGE CONTROL BEARING WAS FOUND TO BE LOOSE ALLOWING BEARING INNER RACE TO SPIN ON ITS SEAT. BEARING RETAINING NUT PN 222-012-717-001 IS PREVENTED FROM MOVING BY THE USE OF A LOCKRING PN 222-SDR AC2A2008080377650Warning Message · false activationDURING THE RETURN FLIGHT FROM, EXPERIENCED A ECU (FADEC) FAILURE ON THE NR 2 ENGINE. IAW THE EMERGENCY PROCEDURES, REDUCED THE THROTTLE ON THE NR 2 ENGINE AND SWITCHED TO MANUAL CONTROL. PILOT NOTIFIED DEPARTURE APT OF THE PROBLEM AND EXECUTED AN UNEVENTFUL LSDR 4911905172008Vertical Gyro · faultyDURING CRUISE FLIGHT, PILOT FELT A VIBRATION IN THE AC FOLLOWED BY ATTITUDE EXCURSIONS IN THE PITCH AXIS. THIS OCCURRED OVER A PERIOD OF APPROXIMATELY (2) MINUTES AND FELT SIMILAR TO GOING OVER A SERIES OF SPEED BUMPS. THE PILOT ELECTED TO MAKE A PRECAUTIONARYSDR AC2A119524Gearbox · crackedFLANGE MOUNTING EAR COMPLETELY CRACKED ON TAIL ROTOR GEAR BOX OUTPUT SLEEVE HOUSING.SDR AC2A119271Warning Light · illuminatedNR 2 ENGINE CHIP SUMP LIGHT ILLUMINATED IN FLIGHT. FOLLOWED EMERGENCY CHECKLIST AND LANDED. REMOVED CHIP PLUGS, CLEANED AND PERFORMED PENALTY RUN. FOUND SERVICEABLE.SDR AC2A118979Stop · crackedSTOP CRACKED IN RADIUS.SDR 495Magnetic Seal · leakingNOTICED FLUCTUATING ENGINE OIL PRESSURE ON NR 2 ENGINE. PULLED OUT AIRCRAFT EMERGENCY PROCEDURE CHECKLIST. FOLLOWED EMERGENCY PROCEDURE. OIL PRESSURE DECREASED BELOW 52.5± 2.5 PSI. SECURED NR 2 ENGINE. COMPLETED RUN ON LANDING ON THE GRASS STRIP AT INTRACSDR AC2A118178Engine · warning lightDURING FLIGHT THE NR 2 ENGINE CHIP SCAV CAUTION LIGHT BEGAN TO FLICKER. NO FLUCTUATIONS IN EITHER ENGINE TEMP OR PRESSURE WERE NOTED. CONTINUED FLIGHT TO VENICE MONITORING ENGINE PARAMETERS.SDR AC2A117289Pickup · inoperativeNR 1 ECU FAILED FIXED FLOW. AIRCRAFT WAS REPOSITIONING FOR TAKEOFF, AT A HOVER, THEN SET LIGHT ON SKIDS, PLACED INTO MANUAL MODE, THROTTLE REDUCED, SET FULL ON GROUND AND SHUTDOWN WITH NO FUTHER ISSUES.SDR AC2A117123Transmission · making metalXMSN CHIP / CHP PLTRY GB ILLUMINATED IN FLIGHT 8 MINUTES AFTER DEPARTURE FROM ICY HELIPORT. AIRCRAFT RETURNED TO ICY WITHOUT INCIDENT.SMALL AMOUNT OF METAL WAS FOUND ON TRANSMISSION PLANETARY CHIP DETECTOR. COMPLIED WITH SERVICEABILITY CHECK OF TRANSMISSION. SDR AC2A113419Sensor · malfunctionedNR 1 ENGINE NP2 RPM PICKUP MALFUNCTIONED/FAILED. INSTALLED SERVICABLE PART.SDR AC2A113281Transmitter · failedSHORTLY AFTER TAKING OFF FROM ST37 I EXPERIENCED A NR 2 ECU FAILURE TO THE HIGH SIDE. FOLLOWED THE EMERGENCY CHECKLIST BY GOING TO MANUAL CONTROL OF NR 2 ENGINE AND RETURNED TO BASE WITHOUT FURTHER INCIDENT. THE MECHANICS DETERMINED THAT THE NR 2 ENGINE TORQUSDR AC2A112008Actuator · malfunctionedCAUSED NR 1 PITCH ERROR AND KICKED AFCS INTO SAS MODE, REPLACED ACTUATOR.SDR AC2A110528Bearing · delaminatedFOUND DELAMINATED / REPLACED BEARING.SDR AC2A110527Bearing · delaminatedFOUND DELAMINATED / REPLACED BEARING
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