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 HLXR2014FA0000369Drum · crackedFOUND CRACKS ON DRUM ASSEMBLY DURING TWO YEAR INSPECTION ON FLIGHT CONTROLS. TWO POSTS HAD ONE CRACK EACH, RUNNING HALF THE MOUNT POST CIRCUMFERENCE. CRACKS MAY BE CAUSED BY THE AIRFLOW OF THE FAN PUSHING AGAINST THE ROTATING CONE ASSEMBLY WHICH IS HELD ON ASDR CA140507005Indicator · broken(CAN) ON ROUTINE INSPECTION, AN ENGINEER FOUND THAT THE CEFA OIL BYPASS INDICATOR WAS POPPED. THE FILTER BOWL WAS REMOVED AND FOUND THE INTERNAL COMPONENTS OF THE BYPASS INDICATOR IN THE FILTER/BOWL.SDR QMLA2014050114046Chip Detector · contaminatedDURING TAKEOFF THE TAIL ROTOR CHIP LIGHT ILLUMINATED. ABORTED THE FLIGHT & RETURNED TO THE BASE. CLEANED & REINSTALLED THE TAIL ROTOR GEARBOX CHIP DETECTOR & RETURNED THE ACFT TO SERVICE. THIS ACFT HAS LOGGED APPROXIMATELY 9 FLIGHT HOURS SINCE THIS EVENT WISDR EVCA2014042800058Compressor · crackedENG COMPRESSOR SCROLL CRACKED.SDR CA140328008Housing · cracked(CAN) DURING OVERHAUL THE FREEWHEEL ASSEMBLY, IT WAS NOTICED THAT A LARGE CRACK HAD FORMED UNDER THE O-RING GROOVE OF THE CHIP DETECTOR HOUSING. SHOULD THE CRACK HAVE CONTINUED AND THE CHIP DETECTOR HOSING HAD BROKEN FREE OF THE FREEWHEEL UNIT, OIL UNDER PRESSDR QMLA2014032714032Compressor · crackedDURING ACFT AIRWORTHINESS CHECK, A 3/8 INCH CRACK WAS NOTED ON THE RT SIDE OF THE ENGINE COMPRESSOR ASSEMBLY IN THE COMPRESSOR HOUSING.SDR CA140401018Combustion Case · cracked(CAN) A SUDDEN ENGINE LOSS OF POWER WAS FELT BY THE CREW DURING TAKEOFF FROM A BUILDING HELIPORT. EVEN WITH THIS CONDITION, THE CREW DECIDED TO FLY THE ACFT 25 MINUTES BACK TO THEIR MAIN BASE. AN INSPECTION WAS CONDUCTED AFTER LANDING AND ENGINE SHUTDOWN, FISDR CA140326021Blade · cracked(CAN) DURING INSPECTION AT CSF, TWO MAIN ROTOR BLADES WERE FOUND WITH SMALL CRACKS ON THE L/E STRIPS. OPENSDR CA140331005Control Unit · malfunctioned(CAN) EXPERIENCED A FADEC FAIL TODAY ON A TEST FLIGHT FOLLOWING A NR 1 BEARING SEAL REPLACEMENT. DURING THE TEST FLIGHT THE FADEC SUDDENLY WENT INTO MANUAL MODE, THROTTLE RESPONDED WITH PILOT INPUTS AND THEY LANDED THE ACFT SAFELY AT AIRPORT. MFG IS SENDING SDR CA140318008Chip Detector · cracked(CAN) DURING THE O/H OF THE TRANSMISSION IF WAS FOUND THAT THE OIL DRAIN PLUG/CHIP DETECTOR WAS CRACKED AT THE RADIUS OF THE FEMALE HOUSING ITEM NR 36 IN THE IPC.SDR QMLA2014031414025Fadec · malfunctionedDURING FLIGHT FADEC DEGRADE, FADEC FAULT & RESTART ILLUMINATED.SDR QMLA2014022814019Fadec · faultedON DEPARTURE, THE FADEC DE GRADE LIGHT ILLUMINATED. THE PILOT RETURNED TO BASE & WHEN HE LANDED THE FADEC FAULT LIGHT ILLUMINATED. THE ACFT THEN WENT INTO MANUAL MODE & THE THROTTLE WAS UNRESPONSIVE TO INPUT. THE ENG STAYED AT 100% WHEN THE THROTTLE WAS IN SDR CA140224021Wire · chafed(CAN) HAD A FLAME OUT CONDITION CAUSED BY FUEL STARVATION ON APPROACH FOR LANDING. WE TROUBLESHOOT THE ISSUE TO THE FUEL VALVE CLOSING UNCOMMANDED DUE TO THE FUEL VALVE SWITCH CLOSE COIL WIRE CHAFING AGAINST SCREW ON THE 28V BUS BAR IN OVERHEAD BREAKER PANEL. SDR QMLA2014021314015Fadec · faultedDURING FLT FADEC DEGRADE LIGHT & RESTART LIGHT ILLUMINATED. AFTER LANDING FADEC FAIL LIGHT ILLUMINATED, SHUT ACFT DOWN.SDR 2014FA0000057Shaft · crackedDUE TO METAL GENERATION AND ABNORMAL SOUND ON SHUTDOWN. A CRACK WAS FOUND ON PT OUTER SHAFT.SDR QMLA2014012914011Engine · making metalAFTER STARTING UP THE ACFT FOLLOWING THE LOADING A PATIENT, THE ENG CHIP LIGHT CAME ON, ABORTED THE START. THE PATIENT WAS SENT BY GND AMBULANCE & THE MECHANIC CAME OUT & CLEANED CHIP PLUGS, CHANGED ENG OIL FILTER & DID A 30 MIN GND RUN. RECHECKED THE CHIP PLSDR 2014FA0000005Lock Nut · brokenDURING TAKEOFF, CREW EXPERIENCED A SUDDEN, MASSIVE, AND CONTINUOUS VIBRATION. MAINTENANCE INVESTIGATION DETERMINED THAT THE SELF-LOCKING CASTELLATED NUT, SECURING THE FORWARD OIL COOLER DRIVE SHAFT BEARING HOUSING TO THE AIRFRAME MOUNT HAD A TOOTH FRACTURED OSDR CA140108015Scroll · cracked(CAN) APROXIMATELY 1.25" LONG CRACK FOUND ON COMPRESSOR SCROLL EXTERIOR DURING ACFT DAILY INSPECTION. SCROLL PART AND SN WILL BE ADDED TO THIS SDR WHEN AVAILABLE. THIS WAS "THIN-WALL" TYPE SCROLL THAT HAS HISTORY OF CRACKING. THIS WAS LAST REMAINING THIN WALSDR M3XA20131226004Engine · making metalPILOT & CREW WAS ON A PATIENT TRANSFER FLIGHT WHEN THE ENG CHIP LIGHT ILLUMINATED. PILOT WAS FLYING DIRECTLY OVER MARSHALL, TX AIRPORT & MADE AN IMMEDIATE LANDING WITHOUT ANY FURTHER ISSUES. PULLED BOTH UPPER & LOWER CHIP DETECTORS & FOUND FLAKES & CHUNKS THSDR M3XA201312260005Engine · making metalPILOT BEGAN TO PULL UP ON COLLECTIVE & RECEIVED AN ENG CHIP LIGHT ILLUMINATION. PULLED BOTH UPPER & LOWER CHIP DETECTORS & FOUND EXCEEDANCE OF CHIPS & FLAKES THAT IS IAW M250-C47B, 72-00-00, 8 E SECTION. ENG CHANGE REQUIRED.SDR CA131210007Transducer · fouled(CAN) DURING GROUND RUN, FADEC FAULT/DEGRADE LIGHT ILLUMINATED. PILOT ATTEMPTED TO SWITCH OFF ENGINE BUT COULD NOT, THEN SUCCESSFULLY SELECTED TO SWITCH OFF MANUALLY. INVESTIGATION INITIATED BY MRO, WHICH REVEALED THE COLLECTIVE PITCH (CP) TRANSDUCER FAILED. SDR CA131129004Line · leaking(CAN) THE ENGINE WAS REMOVED FROM ACFT DUE TO A SERVICE INSPECTION REQUIRED, SB 407-13-99RA. DURING THAT TIME IT WAS FOUND THAT OIL LINE PN 70-037A0910-000 WAS SEEPING BLACK FRETTING OXIDE OUT OF ITS INTERNAL PORTION, AFTER FURTHER INSPECTION THE STEEL BRAIDSDR CA131025006Block · burned(CAN) PILOT PLUGGED IN THE HEATER AT THE END OF THE DAY AND HEARD A POP NOISE. HE UNPLUGGED THE HEATER AND REPORTED THE DEFECT TO MAINTENANCE. UPON INSPECTION IT WAS FOUND THAT A JUNCTION BLOCK HAD INTERNALLY SHORTED CAUSING THE BLOCK TO BURN AND MELT. IT WASDR QMLA2013102413149Engine · making metalPILOT REPORTED ENGINE CHIP LIGHT ILLUMINATED. REMOVED UPPER AND LOWER CHIP PLUGS AND REMOVED A SMALL AMOUNT OF FLAKES. CLEANED THE PLUGS AND REINSTALLED. THE ENGINE WAS RUN AT 100 PERCENT FOR 30 MINUTES WITH NO ADDITIONAL WARNING LIGHTS. THE ACFT WAS RETURSDR CA131010011Bearing · loose(CAN) ON THE ACFT, THE DUAL CYCLIC CONTROL WAS MAKING NOISE WHILE MOVING IT LATERALLY, A CLICKING SOUND. AFTER INVESTIGATION, IT WAS FOUND THAT THE LOWER BEARING OF THE PIVOT ASSY WAS SLIGHTLY MOVING AXIALLY INSIDE OF ITS HOUSING. IT APPEARS THAT THE BEARINGSDR QMLA2013090513127Gearbox · making metalENGINE CHIP LIGHT ILLUMINATED DURING FLIGHT. PERFORMED A PRECAUTIONARY LANDING. MECHANIC ARRIVED, PULLED AND INSPECTED ALL ENGINE CHIP DETECTORS AND FOUND CHIPS/FLAKES ON THE LOWER ENGINE CHIP PLUG. CLEANED CHIP PLUG, PERFORMED 30 MINUTE PENALTY RUN. NO LIGHTSDR CA130903005Engine · making metal(CAN) ENGINE CHIP LIGHT ILLUMINATED DURING DESCENT FORM SIGHTSEEING FLIGHT. ACFT LANDED NORMALLY AT BASE WITHIN 5 MINUTES OF CAUTION LIGHT ACTIVATION. METAL FOUND ON BOTH ENGINE CHIP DETECTORS. ENGINE REMOVED FOR INSPECTION.SDR 2013F00176Chip Detector · activatedENGINE CHIP LIGHT.SDR CA130930008Disc Pack · cracked(CAN) UPON INSPECTION THE ENGINEER FOUND 1 OF THE DISCS IN THE DISC PACK CRACKED AND CORRODED. THE DISC PACK WAS REPLACED. THIS ACFT HAD A DISC CRACKED IN 2009 AND HAS FLOWN OVER 3300 HOURS SINCE THE LAST INCIDENT.SDR QMLA2013081513117Engine · making metalWHILE PERFORMING 25 HOUR INSPECTION OF ENGINE MAGNETIC CHIP DETECTORS IAW EO 13-7900-EO-432 IAW CEB-A-72-6075, REV 1. METAL FLAKES CONSISTING OF MORE THAN 10 PIECES EACH WERE DISCOVERED ON BOTH UPPER AND LOWER CHIP DETECTORS. ACFT WAS GROUNDED AT THAT TIME ASDR CA130812008Bolt · sheared(CAN) WHILE PERFORMING INSPECTION, ACCORDING WITH BHT-407-MM1, CH 5-00-00, PARA 5-20 & DOC B0223-OM4, PARA 1.2. ROTOR BRAKE GUIDE BOLTS FOUND SHEARED, ROTOR BRAKE PADS WORN EXCESSIVELY AND CAUSED CALIPER WEAR.SDR QMLA2013080913114Gearbox · making metalON LANDING, ENGINE CHIP LIGHT ILLUMINATED. NUMEROUS SLIVERS AND CHIPS FOUND ON BOTH THE TOP AND BOTTOM GEARBOX CHIP DETECTORS. ACFT WAS REMOVED FROM SERVICE. ENGINE CHANGED.SDR M3XA2013073000003Bearing · delaminatedDURING FLIGHT, EXPERIANCED A MAIN ROTOR VIBRATION, PRECAUTIONARY LANDING MADE. NORMAL SHUTDOWN. MX INSPECTED AND FOUND SHEAR BEARING ON MAIN ROTOR HEAD DELAMINATING.SDR CA130730001Blade · damaged(CAN) MFG DISCOVERED T/R BLADE ABRASION STRIP BONDING VOIDS AROUND AND EXTENDING AT PROXIMITY OF THE BLADES` DRAIN HOLE.SDR CA130923006Pinion Gear · broken(CAN) PILOT EXPERIENCED ENGINE CHIP LIGHT IN FLIGHT. ACFT LANDED, CHIP PLUGS INSPECTED. NOTHING APPARENT FOUND ON SELF SEALING QUICK DISCONNECT PLUG. PLUG REINSTALLED LIGHT STILL ON. MAINTENACE WENT TO SITE, REMOVED CHIP PLUG BOSS, FOUND GEAR TOOTH. ACFT GSDR QMLA2013070213090Engine · power lossACFT DEPARTED. 7 MINUTES INTO FLIGHT, 1600 FT MSL, CLIMBING TO 2000 FT, FADEC FAULT CAUTION ILLUMINATED. BETWEEN 10 & 15 SECONDS LATER ACFT EXPERIENCED A VIOLENT LEFT YAW OF APPROX 45 DEGREES. AN AUTOROTATIVE DESCENT IMMEDIATELY INITIATED. DURING DESCENTSDR QMLA2013063013086Hydraulic System · malfunctionedAFTER DECENT AND LEVELING AT 2500 FEET THE HYD PRESS AND CYCLIC CENTER LIGHTS ILLUMINATED ALONG WITH THE LOSS OF NORMAL CONTROL FORCES AND THE ACFT BECAME VERY SLOPPY AND HEAVY. ALL INDICATIONS ARE THAT THE HYD FAILED, DECLARED AN EMERGENCY AND DIVERTED. TURSDR CA130709003Tip Cap · detached(CAN) TIP CAP DEPARTED TAIL ROTOR BLADE. BLADE HAD BEEN RECENTLY REPAIRED.SDR CA130702010Relay · failed(CAN) THE MAIN STARTER RELAY HAS THREE SETS OF CONTACTS INSIDE. THE MAIN CONTACTS AND 2 MICROSWITCHES FOR THE IGNITION SYSTEM. THE MICROSWITCH FOR THE IGNITION RELAY HAS FAILED AND THIS SEEMS TO BE A RECURRING PROBLEM. THESE MICROSWITCHES DON`T SEEM TO LAST ASDR CA130611005Engine · making metal(CAN) ACFT WAS ENROUTE TO DROP THE OWNER OFF FOR VACATION. ENGINE CHIP LIGHT ILLUMINATED. ACFT LANDED, REMOVED THE UPPER AND LOWER CHIP PLUGS AND FOUND CHIPS ON UPPER AND LOWER PLUGS BUT THE UPPER PLUG HAD A 1.93 MM "CHUNK" THAT ILLUMINATED THE LIGHT IAW THESDR CA130611009Engine · making metal(CAN) SUBJECT HELICOPTER, ROUTINE ANNUAL INSPECTION, WHEN TECHS CHECKED THE ENGINE CHIP PLUGS IAW ASB 407-13-99 AND CEB A-72-6075 AND FOUND SIGNIFICANT AMOUNTS OF METAL FLAKES ON BOTH PLUGS. AT LEAST 1 OF THE CHIPS EXCEEDS THE R & R OPS & MM 72-00-00, PAGE 33SDR CA130612003Mount · damaged(CAN) PILOT REPORTED A STRANGE INTERMITTENT VIBRATION. DURING A VISUAL INSPECTION, THERE WERE CONTACT MARKS ON THE LT AFT CORNER MOUNT UP STOP/SAFETY WASHER. UPON INSPECTION WITH THE CORNER MOUNT LIFT TOOL, THE LT AFT CORNER MOUNT WAS FOUND SEPARATED. ALL 4SDR CA130509008Scroll · cracked(CAN) CRACK IN SCROLL FOUND BY AME AFTER COMPRESSOR ASSY WAS REMOVED FOR LOOSE PERCUSSION WELDED ATTACHMENT STUDS. COMPRESSOR ASSY BEING SHIPPED FOR REPAIR. SCROLL, SN FU40784. SCROLL TSN TO FOLLOW.SDR CA130515011Hmu · malfunctioned(CAN) DURING CRUISE FLIGHT AND APPROXIMATELY 30 TO 45 MINUTES AFTER TAKEOFF THE PILOT HEARD A PING AND NOTED THE FADEC DEGRADE AND RESTART LIGHTS ON. UPON LANDING THE THROTTLE WAS SELECTED TO IDLE BUT THE ENGINE REMAINED AT 100 PERCENT NR. WITH THE THROTTLESDR QMLA2013050613063Sump · making metalDURING THE 20 HOUR INSPECTION OF THE CHIP DETECTORS IAW 13-7900-E0-432 FOUND METAL CHIP ON THE SUMP CHIP PLUG THAT EXCEDED THE LIMITS CALLED OUT IN MM.SDR CA130515012Ecu · malfunctioned(CAN) FADEC DEGRADED, FADEC FAULT, AUTO RELIGHT AND RESTART CAUTION LIGHTS ILLUMINATED DURING LEVEL FLIGHT, SHORTLY AFTER TAKEOFF FROM THE MEXICO CITY AIRPORT. A NORMAL LANDING WAS COMPLETED 6 MINUTES AFTER TAKEOFF. THE THROTTLE WAS MOVED TO THE FLIGHT IDLE PSDR QMLA2013042413061Warning Light · illuminatedON APPROACH, PILOT ENCOUNTERED FLYING DEBRIS, PULLED IN COLLECTIVE AND ENCOUNTERED A FLASHING TORQUE DISPLAY AND SUBSEQUENT ERROR MESSAGE ON THE INDICATOR. AFTER RETURNING TO BASE, MECHANIC DOWNLOADED THE TORQUE INDICATOR RECORDED EXCEEDANCE, WHICH WAS 119 PESDR QMLA2013042213057Disc Pack · crackedAIRWORTHINESS INSPECTION FOUND TAIL ROTOR AFT SHORT SHAFT COUPLING DISC PACK CRACKED.SDR JBZA20130430002Panel · corrodedDURING 60 MONTH INSPECTION, FOUND CORROSION ON THE RT AND LT TRANSMISSION MOUNTS AFT. ATTACHING SURFACE OF THE ROOF PANEL ASSY. REPAIRED IAW THE PSE FIELD REPAIR NR 13RL-045.SDR CA130502009Stud · broken(CAN) FOUND STUD BROKEN DURING DAILY INSPECTION.
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