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 QMLA2013041513053Clock · burnedDURING FLIGHT, PILOT NOTICED AND SMELLED SMOKE IN COCKPIT WHICH APPEARED TO BE COMING FROM THE CLOCK AREA. PILOT PERFORMED A SAFE PRECAUTIONARY OFF SITE LANDING. PILOT ALSO MENTIONED THAT THE NVG LIGHTING ON OTHER INSTRUMENTS WENT OUT THEN RETURNED AFTER LANSDR QMLA2013032113043Panel · deformedCREW REPORTED BURNING PLASTIC ODOR IMMEDIATELY AFTER TURNING OFF HEATER SYS. ODOR LASTED ABOUT 30 SECONDS AND WAS GONE. ON INSPECTION OF HEATER SYS, FOUND THE INTERIOR TRIM PANEL AT THE OUTLET OF THE AIR COMM HEATER IN THE CABIN AT THE RT SIDE AFT FACING SEATSDR CA130311025Nut · loose(CAN) HYDRAULIC SERVO, WAS FOUND TO HAVE A LOOSE ROD END JAM NUT ON THE FORWARD END OF THE SERVO. THE NUT LOCKS THE ROD END FROM SPINNING IN OR OUT OF THE SERVO SHAFT. THIS ROD END IS NOT FIELD ADJUSTABLE AND THE LENGTH IS SET UP AT O/H/FACTORY. THE LOCK NOSDR CA130222007Wire · cracked(CAN) LOW LEVEL FUEL SWITCH, PN 407-362-005-103, S/N 301 WAS DISCOVERED TO HAVE CRACKED AND MISSING INSULATION ON BOTH THE WIRES ENTERING AND EXITING THE SWITCH. THE WIRES ARE BONDED INTO THE BASE OF THE SWITCH AND THE WIRES ARE NON REMOVABLE. THE CRACKED INSDR QMLA2013021613025Engine · making metalPILOT REPORTED ENGINE CHIP LIGHT ILLUMIINATED JUST AFTER LANDING AND RETURNING TROTTLE TO IDLE. MX WAS CALLED AND A LARGE AMOUNT OF FLAKES WERE FOUND ON BOTH THE UPPER AND LOWER ENGINE CHIP DETECTORS. SOME FLAKES EXCEEDED THE MAXIMUM ALLOWABLE IAW MM 72, PARA SDR CA130208007Blades · damaged(CAN) PILOT HAD JUST COMPLETED POWER CHECK FOLOWING DAY OF HELISKI OPS AND WHEN MECHANIC EXITED THE AIRCRAFT DURING ENGINE COOL DOWN HE HEARD A LOUD BANG FOLLOWED BY A GRINDING NOISE. SHUT ENGINE DOWN AND DISCOVERED A PROBLEM NEAR THE FRONT OF THE ENGINE. BOSDR CA130215011Ecu · failed(CAN) CUSTOMER REPORTS FADEC DEGRADE IN FLIGHT, REMAINS IN AUTO MODE, HOWEVER AT THROTTLE ROLL-DOWN NO RESPONSE, WHICH WOULD BE INDICATIVE THAT IT HAS REVERTED TO THE REVISIONARY GOVERNOR. IN THE DOWNLOADED FILES PROVIDED THERE ARE NO FAULTS OR EXCEEDANCES RESDR CA130124016Control Unit · defective(CAN) PILOT REPORTED FADEC FAULT, FADEC DEGRADED, AND RESTART FAULT INDICATIONS DISPLAYED ON THE MULTI FUNCTION DISPLAY, MFD, SCREEN AFTER LANDING AT DESTINATION NEAR THE COAST. THROTTLE WAS ROLLED FROM FLY TO IDLE BUT ENGINE DID NOT RESPOND, REMAINED AT 100SDR CA130215008Control Unit · malfunctioned(CAN) PILOT REPORTED FADEC FAULT, FADEC DEGRADED, AND RESTART FAULT INDICATIONS DISPLAYED ON THE MFD SCREEN AFTER LANDING AT DESTINATION NEAR THE COAST. THROTTLE WAS ROLLED FROM FLY TO IDLE BUT ENGINE DID NOT RESPOND, REMAINED AT 100 PERCENT ROTOR & N2 RPM. PSDR CA121220005Erosion Shield · cracked(CAN) A CRACK APPROXIMATELY 6.0" LONG WAS FOUND ON THE OTBD MOST AREA OF THE L/E EROSION STRIP.SDR CA130124023Cable Assy · chafed(CAN) DURING FUEL SYSTEM MAINTENANCE, FOUND FUEL SYSTEM CABLE ASSEMBLY DAMAGED FROM CHAFING ON LINE.SDR CA121220007Drive Shaft · cracked(CAN) DURING AN INSPECTION ON ACFT, A CRACK WAS DISCOVERED IN A FLANGE OF THE NR 3 TAIL ROTOR DRIVE SHAFT AT THE BOLT HOLE. THIS PROMPTED US TO IMPOSE AN INSPECTION FOR CRACKS ON THE REST OF OUR FLEET. THIS INSPECTION REVEALED 5 ADDITIONAL CRACKS IN TAIL ROTOSDR CA121220008Drive Shaft · cracked(CAN) DURING AN INSPECTION, A CRACK WAS DISCOVERED IN A FLANGE OF THE NR 3 TAIL ROTOR DRIVE SHAFT AT THE BOLT HOLE. THIS PROMPTED US TO IMPOSE AN INSPECTION FOR CRACKS ON THE REST OF OUR FLEET. THIS INSPECTION REVEALED 5 ADDITIONAL CRACKS IN TAIL ROTOR DRIVE SDR CA121220009Drive Shaft · cracked(CAN) DURING AN INSPECTION ON ACFT, A CRACK WAS DISCOVERED IN A FLANGE OF THE NR 3 TAIL ROTOR DRIVE SHAFT AT THE BOLT HOLE. THIS PROMPTED US TO IMPOSE AN INSPECTION FOR CRACKS ON THE REST OF OUR FLEET. THIS INSPECTION REVEALED 5 ADDITIONAL CRACKS IN TAIL ROTSDR CA121220010Drive Shaft · cracked(CAN) DURING AN INSPECTION ON ACFT, A CRACK WAS DISCOVERED IN A FLANGE OF THE NR 3 TAIL ROTOR DRIVE SHAFT AT THE BOLT HOLE. THIS PROMPTED US TO IMPOSE AN INSPECTION FOR CRACKS ON THE REST OF OUR FLEET. THIS INSPECTION REVEALED 5 ADDITIONAL CRACKS IN TAIL ROTSDR CA121220012Drive Shaft · cracked(CAN) DURING AN INSPECTION ON 1 OF OUR 407 ACFT, A CRACK WAS DISCOVERED IN A FLANGE OF THE NR 3 TAIL ROTOR DRIVE SHAFT AT THE BOLT HOLE. THIS PROMPTED US TO IMPOSE AN INSPECTION FOR CRACKS ON THE REST OF OUR FLEET. THIS INSPECTION REVEALED 5 ADDITIONAL CRACKSDR K2DA20121214Transmission · making metalTRANSMISSION CHIP LIGHT DURING FLIGHT. PRECAUTIONARY LANDING PREFORMED. MX DISPACHED WITH COMPANY ACFT AND PASSENGERS WERE FLOWN FOR CONTINUATION OF THE FLIGHT. FOUND SMALL METAL PARTICALS ON LOWER CHIP PLUG, CLEANED PLUG PERFORMED PENALTY RUN WITHOUT FURTHESDR QMLA2012111712184Warning Light · false activationDURING FLIGHT, ENGINE CHIP LIGHT ILLUMINATED. DRAINED, FLUSHED, CHANGED FILTER, GROUND RUN COMPLETE, NO CHIPS DETECTED.SDR QMLA2012111512183Engine · malfunctionedPILOT REPORTED A FADEC FAIL, FADEC RESTART FAULT AND FADEC DEGRADE LIGHT IN CRUISE FLIGHT. FADEC CONTROLS REVERTED TO REVERSIONARY GOVERNOR AND PILOT HAD NO RESPONSE FROM COLLECT THROTTLE CONTROL. ENGINE SPEED REMAINED CONSTANT AT 100 PERCENT. MADE A PRECUATIOSDR QMLA2012111312179Pump · crackedON POST FLIGHT, NOTICE FUEL ODOR, OPEN ENIGNE COWLING NOTICED FUEL LEAKING FROM HMU ASSY. THERE ARE TWO CRACKS ON FUEL PUMP HOUSING. LOCATED THE 5:00 IS 1.5 " IN LENGTH ON THE IN SERVICE PORT LOCATED AT THE 6:00 RT ABOVE THE DRAIN PORT LENGTH IS 1.0".SDR QMLA2012111112175Blade · crackedPILOT FOUND CRACKS IN TOP SKIN OF MAIN ROTOR BLADE ON NOV 11, 2012 DURING MORNING PRE-FLIGHT CHECK.SDR QMLA2012110912177Blade · crackedMAIN ROTOR BLADE ABRASION STRIP CRACKED CHORDWISE AT BLADE STATION 199, FROM WEIGHT POCKET THROUGH L/E RADIUS.SDR QMLA2012100912166Blade · delaminatedON ROLL UP/DOWN OF THROTTLE, PILOT ENCOUNTERED EXCESS VIBRATION (FELT AND HEARD). INSPECTED BLADES AROUND TRIM TABS AND DISCOVERED DELAMINATION FORWARD OF THE TRIM TAB ON THE BOTTOM SIDE OF THE BLADE, APPROX THE SPAN OF THE TAB (10") AND THE EXTENDS APPROX SDR CA121015011Ecu · faulted(CAN) THE ACFT FIRST STARTED EXPERIENCING NUISANCE FADEC DEGRADE FAULTS IAW RR CSL-6125 ON JULY 19, 2012. SINCE JULY THESE FAULTS HAVE REOCCURRED ON AN INCREASING BASIS WITH HRS FLOWN AND PRIOR TO SOFTWARE UPGRADE WERE REOCCURRING ALMOST EVERY FLIGHT. THE ECSDR ALGA2012092102Bearing · wornLARGE QUANTITY OF METAL ON LOWER TRANSMISSION CHIP DETECTOR. FOUND NO EVIDENCE OF MAKING METAL. PERFORMED A 4500 HR O/H. CHANGED OUT BEARING, DUE TO WORN ROLLERS.SDR ALGA2012092104Bearing · failedENGINE MAKING METAL, FOUND CAUSE FOR METAL IN OIL TO COME FROM NR 2 BEARING FAILURE.SDR QMLA2012091412152Warning Light · illuminatedPILOT REPORTED ENGINE CHIP LIGHT, PREPARING TO REFUEL, AND ACCORDING TO PMSP, PERFORMED PROCEDURE TO INSPECT, CLEAN AND REINSTALL CHIP DETECTORS. PERFORMED A 30 MINUTE GROUND RUN. NO DEFECTS. PROCEEDED BACK TO BASE AND UPON ARRIVAL AT BASE PULLING INTO HOVESDR CA120914009Duplex Bearing · making metal(CAN) MAIN TRANSMISSION MAKING METAL FOUND EVIDENT IN TRANSMISSION FILTER AND SUMP CHIP PLUG. TRANSMISSION REPLACED AND SENT TO O/H FOR EVALUATION. TRANSMISSION TEAR DOWN REPORT INDICATES DUPLEX BEARING, PN 407-340-032-101, SN ZV10283-B HAS 2 SPALL MARKS ON SDR QMLA2012091112150Frame · crackedTAILBOOM ATTACH FRAME, PN 407-030-027-101 WAS REPLACED BY UNITED ROTORCRAFT DUE TO CRACKING. A CRACK WAS DISCOVERED IN FRAME INSTALLATION ANGLE, PN 206-032-308-107 IN THE APEX OF THE BEND WHERE IT ATTACHES TO ABOVE MENTIONED TAILBOOM ATTACH FRAME. CRACKS IN SDR HEEA20120906722Bearing · spalledENGINE REMOVED DUE TO IMPELLER RETIREMENT. NR 5 BEARING SPALLING IN OUTER RACE AT SPLIT. REPLACED WITH NEW NR 5 BEARING.SDR QMLA2012090612153Unknown · odorAFTER REACHING CRUISING ALITITUDE ENROUTE. NOTICED AN UNUSUALLY STRONG ODOR OF FUEL IN FLIGHT. PERFORMED A VISUAL INSPECTION OF ALL LINES AND AREAS AROUND THE ACFT AND FOUND NOTHING OUT OF THE ORDINARY. TOOK OFF AGAIN AND THE ODOR WAS GONE AND PROCEDED ONSDR HEEA20120904748Bearing · spalledENGINE REMOVED DUE TO CYCLED WHEELS. NR 5 BEARING EXHIBITED LIGHT SPALLING AT OUTER RACE SPLIT. REPLACED WITH NEW NR 5 BEARING.SDR CA120823003Engine · failed(CAN) HAD ENGINE FAILURE IN FLIGHT, ENGINE REMOVED AND SENT TO FOR INVESTIGATION.SDR EOPA20120809001Longeron · crackedCOMPLETING THE 150 HR INSPECTION FOR ASB 407-11-95. A CRACK WAS FOUND IN ONE OF THE LONGERONS.SDR HEEA20120804485Bearing · spalledENGINE REMOVED DUE TO TURBINE OVERHAUL. NR 5 BEARING EXHIBITED SPALLING BALLS ON OUTER RACE. REPLACED WITH NEW BEARING.SDR CA120802017Support Angle · cracked(CAN) CRACK DISCOVERED ON LT HORIZONTAL STABILIZER UPPER SUPPORT ON TAILBOOM. CRACK WAS ON THE FORWARD PORTION OF THE DOUBLER.SDR QMLA2012072612122Skin · crackedWHILE PERFORMING PREFLIGHT INSPECTION, A CRACK WAS FOUND ON THE LEADING EDGE OF THE VERTICAL FIN ON THE TAIL. THE CRACK IS ABOUT 2" LONG AND STARTS AT THE LEADING EDGE AND GOES TO THE INBD SIDE OF THE VERTICAL FIN. THE ACFT WAS TAKEN OUT OF SERVICE AND A NEWSDR HEEA20120725351Combustion Case · crackedREMOVED DUE TO CRACKED AROUND FUEL NOZZLE BOSS. REPLACED COMBUSTION CASE.SDR CA120912011Grease Fitting · failed(CAN) IT WAS REPORTED THAT THE BALL AND SPRING OF 1 OF THE SWASHPLATE GREASE FITTINGS LEFT THE FITTING AND LOGGED IN THE SWASHPLATE BEARING CAUSING A PREMATURE WEAR AND REMOVAL OF THE PART. BLACK MUD WAS COMING OUT WITH THE GREASE.SDR ALGA2012071801Shaft · damagedUPON COMPLIANCE WITH A 3000 HR INSPECTION, FOUND SHAFT DAMAGED BEYOND REPAIR.SDR ALGA2012071702Stop · damagedON DISASSEMBLY, DUE TO BROKEN SPRING RETAINER, FOUND HOUSING, STOP ASSY, DAMAGED BEYOND REPAIR AND WAS REPLACED.SDR ALGA2012071601Bearing · making metalBEARING MAKINGMETAL IN ENGINE OIL.SDR ALGA2012071302Adapter · corrodedDURING COMPLIANCE WITH 3000 HR O/H OF THE F/W UNIT ASSY, THE ADAPTER WAS DISCARDED DUE TO PITTING AND CORROSION BEYOND MFG LIMITS.SDR CA120716010Blade · damaged(CAN) ON THE DAILY INSPECTION THE PILOT NOTICED THE SKIN ON THE TAIL ROTOR BLADE T/E WAS DELAMINATED, THE SKIN HAD SEPARATED. THE ACFT WAS GROUNDED, MAINTENANCE STAFF INSPECTED THE BLADE AND CONFIRMED THE DEFECT. A NEW BLADE WAS ORDERED AND INSTALLED. MFG PRSDR CA120912009Drive Shaft · cracked(CAN) PHI REPORTED THAT A T/R DRIVESHAFT ATTACHEMENT FLANGE WAS CRACKED NEAR THE OTBD BOLT HOLE. THE PART WAS SCRAPPED AND REPLACED WITH A NEW T/R DRIVESHAFT.SDR CA120912006Blade · delaminated(CAN) ON A DAILY INSPECTION, THE PILOT NOTICED ONE OF THE TAIL ROTOR BLADES WAS DELAMINATING/SKIN SEPARATING ON THE T/E NEAR THE TIP. A REPLACEMENT WAS ORDERED.SDR CA120712007Servo · worn(CAN) INTERMITTENT VIBRATIONS WERE FELT THROUGH AIRFRAME DURING A FUNCTION CHECK OF THE HYDRAULICS. UPON INSPECTION OF THE T/R SERVO THE HARDWARE AND BUSHING WERE FOUND TO BE WORN. THIS CAUSED A FLUTTERING OF THE INPUT VALVE WHICH WAS FELT THROUGH THE AIRFRASDR HEEA20120629172Bearing · spalledNR 5 BEARING EXHIBITED SPALLING AT OUTER RACE SPLIT. REPLACED WITH NEW BEARING.SDR QMLA2012062612107Engine · making metalDURING CRUISE, ENGINE CHIP CAUTION WARNING LIGHT ILLUMINATED, NO OTHER INDICATORS WERE EVIDENT OF ENGINE DAMAGE, ACFT LANDED. MECHANIC FOUND CHIPS ON BOTH CHIP DETECTORS AND IS EVALUATING CORRECTIVE ACTIONS.SDR HEEA20120623174Bearing · spalledNR 5 BEARING EXHIBITED SPALLING OF OUTER RACE. INSTALLED NEW BEARING.
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