Allison 250-C20
Service difficulty reports · 945
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 = '250C20' 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 = '250C20' 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 UH02007F00000None · noneDURING PRACTICE AUTOROTATION, ENGINE SHUTDOWN DUE TO THROTTLE INADVERTENTLY CLOSING INTO FUEL CUTOFF POSITION. STUDENT`S LEG CONTACTED IDLE, IDLE RELEASE BUTTON ON COLLECTIVE STICK HEAD AND THIS ALLOWED THROTTLE TO ROTATE BEYOND IDLE POSITION. HAVE CONTACTEDSDR CA070511005Governor · failed(CAN) GOVERNOR DROOPED TO 95 PERCENT WOULD NOT RETURN TO 100 PERCENT. RETURNED TO BASE, TO CHANGE AIRCRAFT. DRIVE FROM GOVERNOR WAS BINDING INTERMITTENTLY. WHEN THE GOVERNOR WAS MOVED IT SOUNDED LIKE THERE WAS SOME PARTS LOOSE INTERNALLY. GOVERNOR REPLACED, PSDR 2007FA0000390Bracket · damagedDURING A PREFLIGHT, THE PILOT NOTICED THE GOVENOR BELCRANK HAD SOME SLOP SUBSEQUENT INSPECTION DISCLOSED THAT THE BELCRANK PIVOT BOLT WAS MOVING IN THE BRACKET BECAUSE THE HOLE WAS ELONGATED, REPLACED BRACKET. (K)SDR CA070412001Mount · cracked(CAN) ON A ROUTINE ENGINE REPLACEMENT, IT WAS FOUND THAT THE LT LOWER ENGINE MOUNT WAS CRACKED AT THE ATTACH POINT. AFTER CLOSER INSPECTION THE MOUNT WAS COMPLETELY SEPARATED FROM THE AIRFRAME. THERE WAS NO INITIAL INDICATION OF A PROBLEM. IT WAS FOUND THAT THSDR CA070327003Friction Cup · cracked(CAN) DURING INSPECTON STARTER-GENERATOR FRICTION CUP PLATE WAS FOUND TO BE CRACKED. NEW PART ORDERED AND INSTALLED WHEM IT ARRIVED. (TC NR 20070327003)SDR BAQA20070007Line · cutDURING POST FLIGHT WALK AROUND INSPECTION FOUND MAJORITY OF TAILBOOM OF AIRCRAFT COVERED IN BLACK OIL. REPAIRED CUT OIL LINE.SDR CA070309003Blade · cracked(CAN) PILOT FELT A VIBRATION AND UPON LANDING CHECKED MAIN ROTOR BLADES. A CRACK APPROXIMATELY 18 INCHES FROM THE ROOT, RUNNING PERPENDICULAR TO THE TRAILING EDGE WAS DISCOVERED. IT APPEARS AS IF THE BLADE DEBONDED AT A RIB, AS THE CRACK FOLLOWS STRAIGHT FROM SDR BAQA20070006Terminal · brokenDURING CRUISE FLIGHT PILOT OBSERVED THE NR 2 ENGINE FIRE LIGHT ILLUMINATE . PILOT DID A PRECAUTIONARY LANDING AT AIRPORT. MECHANIC DISPATCHED AND FOUND WIRE ON TERMINAL LUG ON FIRE DETECTOR BROKEN. REPLACED TERMINAL LUG AND COMPLIED WITH AN OPERATION CHECK OFSDR 2007FA0000166Fitting · wornMAIN ROTOR DRIVELINK UPPER FITTING STEEL BUSHES (109-0110-70-1) AND UPPER SLEEVE (109-0110-69-1) SEVERELY WORN. SLEEVE STEPPED TO LESS THAN HALF MANUFACTURED DIAMETER AT BOTH ENDS. STEEL BUSHES WORN THROUGH COMPLETELY, WEAR EXTENDING INTO FITTING. HOLE IN BSDR CA070201008Fcu · failed(CAN) AFTER THE AIRCRAFT WAS STARTED, THE PILOT DECIDED TO DO A WALK AROUND THE AIRCRAFT. FUEL WAS NOTICED FLOWING FROM THE ENGINE BAY TO THE GROUND. FURTHER INVESTIGATION REVEALED A MASSIVE FUEL LEAK AT THE FUEL CONTROL THROTTLE LEVER SHAFT SEAL. FUEL WAS FLOSDR BAQA200600010Gearbox · making metalMAIN GEARBOX CHIP LIGHT ILLUMINATED ON GROUND RUN UP DRAINED AND FLUSHED GEARBOX PERFORMED REQUIRED PENALTY RUN. CHIP LIGHT ILLUMINATED AGAIN. REMOVED AND REPLACED MAIN GEARBOX ASSEMBLY.SDR CA061128004Support · cracked(CAN) STRAP PN 206-031-200-076 WAS FOUND CRACKED AT INSPECTION. WHEN IT WAS REMOVED, SUPPORT PN 206-031-202-015 WAS ALSO FOUND CRACKED. BOTH WERE REPLACED IAW MFG INSTRUCTIONS. (TC NR 20061128004)SDR CA061122002Bearing · failed(CAN) CUSTOMER REPORTED BEARING FAILURE ON MAIN SHAFT OF STARTER/GENERATOR. BEARING CAGE CAME APART. UPON INSPECTION. IT WAS FOUND THE BEARING CAGE WAS NON-EXISTANT. WE CONTACTED OUR SUPPLIER. (TC NR 20061122002)SDR CA061108002Mount · broken(CAN) DURING DAILY INSPECTION PILOT NOTICED UNUSUAL PIECE OF METAL IN THE ENGINE BAY. INVESTIGATION REVEALED BROKEN LOWER LT ENGINE MOUNT. (TC NR 20061108002)SDR CA061031003Servo · leaking(CAN) EXCESSIVE FLUID LEAKAGE. LEAKING BEYOND LIMITS (TC NR 20061031003)SDR CA060913003Skin · cracked(CAN) WHILE CARRYING OUT ASB 206-06-107, FIN WAS REMOVED AND A FIN ATTACHMENT INSERT P/N 80-011-P12F2-0 WAS FOUND CRACKED. AFTER REMOVAL OF THE CRACKED INSERT, THE IB SKIN BELOW WAS FOUND TO HAVE SEVERAL CRACKS PROPAGATING UNDERNEATH THE DOUBLER. THE IB DOUBLESDR CA061025005Cartridge · intermittent(CAN) ABOVE 7000 FEET BOOST PUMP LIGHT WOULD COME ON. BELOW 7000 FEET WARNING LIGHT WOULS EXTINGUISH. BOOST PUMP CARTRIDGE P/N 1C27 REPLACED. (TC NR 20061025005)SDR CA061121002Magnetic Seal · leaking(CAN) MAIN ROTOR GEARBOX MAGNETIC SEAL HAS EXCESSIVE LEAKAGE FROM MAIN INPUT SEAL. (TC NR 20061121002)SDR CA060818005Case · eroded(CAN) AIRCRAFT WAS IN FOR AN INSPECTION. THE COMPRESSOR CASE HALVES HAD 23 HOURS LT TO A 1750 INSPECTION. MFG REQUESTED THAT WE CARRY OUT THE INSPECTION. IT WAS FOUND THAT THE 2ND AND 3RD STAGE STATOR BLADES WERE SO UNDER CUT FROM EROSION (NEAR THE ROOT OF THESDR CA060725006Governor · inoperative(CAN) UNIT HAD ABOUT 25.0 HOURS THIS INSTALL. PILOT REPORTED THAT GOVERNOR WOULD BLEED OFF IN FLIGHT BY 4 TO 5 PERCENT THEN COME BACK TO NORMAL AFTER A FEW SECOND 10 TO 15 SECONDS. THEN IT WOULD BE FINE FOR SOME TIME. UPON REPORTING THIS THE AIRCRAFT WAS REMOSDR CA060801004Fitting · cracked(CAN) A CRACK WAS FOUND FROM THE AFT TOP RIVET HOLE. THE CRACK STARTS AT THE TOP OF THE FITTING AND TRAVELS DOWNWARD THROUGH THE RIVET HOLE AND APPROXIMATELY .2500 FURTHER. (TC NR 20060801004)SDR EOP2006F00000Servo · malfunctionedAC HAD A STRANGE VIBRATION AND A SQUEALING SOUND. AFTER TROUBLESHOOTING WHERE THIS VIBRATION AND SOUND WAS COMING FROM, THE MECHANIC NOTICED ONE OF THE SERVO’S VIBRATING A LITTLE BIT AND PUT HIS HAND ON IT AND THE SOUND STOPPED. SERVO WAS CHANGED AND THE SYSSDR JJWA108403Housing · corrodedENGINE OIL LEAK FROM OIL FILTER HOUSING CAP FOUND TO BE CAUSED BY SEVERE CORROSION AROUND CAP RETAINER STUD BASES, WITH MISSING METAL MIGRATED TO O-RING SEAL AREA. INSTALLED TSO: 0.0 PN 23035102 HOUSING ASSEMBLY. RUNUP LEAK CHECKS FOUND PROBLEM RESOLVED. SUGGSDR 2006FA0000490Coupling · separatedHYDRAULIC PUMP TACH DRIVE COUPLING BRAZED WELDING FAILED CAUSING COUPLING TO SEPARATE FROM DRIVE GEAR SHAFT. MFG SHOULD CHECK THE STRENGTH OF BRAZE AFTER WELDING. WHEN THIS COUPLING FAILS, LOSS OF ROTOR TACH OCCURS. (K)SDR CA060215002Filter · damaged(CAN) ENGINE OIL FILTER, VENDOR NR IS 05228-759280-101. THERE WAS A PROBLEM WITH ONE OF THE SEAMS IN ONE OF THE ELEMENTS NOT BEING SEALED. ALL OF THE PTI FILTERS IN STOCK WERE INSPECTED AND FOUND THE SAME DEFECT IN EACH FILTER. THE FILTERS WERE PURCHASED ANSDR CA060213002Air Duct · melted(CAN) DURING MAINTENANCE, AN AME NOTICED THAT HE COULD NOT MOVE THE HEATER AIR OUTLET. ON CLOSER INVESTIGATION, HE FOUND THE OUTLET MELTED. NO OTHER DAMAGE WAS NOTED. (TC NR 20060213002)SDR CA060131004Tee Fitting · crackedWHILE IN CRUISE FLIGHT, THE PILOT FELT FEEDBACK SHOCK IN THE CYCLIC CONTROL. THE PILOT ISOLATED HYDRAULICS AND MADE AN UNSCHEDULED LANDING. MAINTENANCE CREW PERFORMED AN INSPECTION OF THE HYDRAULIC FLIGHT CONTROL SYSTEM. A TEE FITTING THE LEFT HAND SERVO ACSDR ALG2006F00002Engine · oil consumptionDURING FLIGHT IT WAS NOTED THAT THE ENGINE OIL PRESSURE INDICATOR WAS FLUCTUATING. CONTINUED FLIGHT AND OIL PRESSURE AND TEMPERATURE REMAINED WITHIN LIMITS. THE ENGINE WAS REMOVED DO TO OIL CONSUMPTION. (K)SDR BAQ2005F00004Pump · unknownPUMP REMOVED IN COMPLIANCE WITH AD 03-21-09. (K)SDR CA051205008Stop · crackedDURING OVERHAUL OF MAIN ROTOR HUB, NDT OF THE STATIC STOPS FOUND CRACKS IN CORNERS. THE ASSEMBLY HAS TWO STOPS, AND BOTH WERE CRACKED.SDR CA051206005Coupling · damagedDURING A CONVERSATION BETWEEN ESSENTIAL TURBINES INC (ETI) PROCUREMENT MANAGER, AND CENTRAL ROMANA CORPORATION LTD., LA ROMANA, DOMINICAN REPUBLIC (T.809-723-1372, 809-523-8232, 809-813-9350 FAX 305-574-7873), A QUERY WAS ABOUT PARTS THAT (ETI) WAS ASSUMED TOSDR 2005FA0001567Blades · vibratesHAVE BEEN EXPERIENCING PROBLEMS KEEPING THE M/R BLADES IN ACCEPTABLE TRACK AND BALANCE ON ALL 333/269D CONFIG A AIRCRAFT THAT WE MAINTAIN. ALSO HAVE BEEN FINDING MUCH MORE RAPID DETERIORATION OF THE M/R DAMPERS, FLAPPING HINGE BEARINGS, AND VERTICAL HINGE BEARSDR CA051211001Fuel Control · malfunctionedPILOT LANDED ON REMOTE LEASE SITE AND UPON LOWERING THE COLLECTIVE THE ENGINE DID AN UNCOMMANDED DECEL TO 75 PERCENT. PILOT ROLLED THROTTLE BACK TO IDLE AND TRIED TO ROLL THROTTLE BACK TO 100 PERCENT. ENGINE WOULD NOT RETURN PAST 75 PERCENT. MAINTENANCE WASSDR CA060117006Pin · unserviceableTHREADED PORTION OF EXPANDABLE PIN FOUND SHEARED OFF, REPLACED WITH SERVICEABLE ASSEMBLY. ASSEMBLY WAS FOUND TO BE BROKEN DURING A GROUND RUN. THIS PIN IS PART OF THE QUICK DISCONNECT PEDAL SYSTEM.SDR EAHR200500003Gcu · malfunctionedGENERATOR CONTROL UNIT CAUSES GENERATOR RELAY TO CYCLE ON AND OFF.SDR CA060306016Tachometer · failed(CAN) NO ROTOR TACH INDICATION. REPLACED TACH. (TC NR 20060306016)SDR CA051027008Planetary Gear · mismanufactured(CAN) PLANETARY GEAR FLANKS SURFACE FINISH EXCEED THE ENGINEERING DRAWING REQUIREMENT OF (RMS 8 RA).4 GEARS IAW XMSN IAW 206B.SDR CA051025005Combustion Case · cracked(CAN) AIRCRAFT TOT WAS RUNNING HIGH, N1 WAS ABOUT 91 PERCENT. BARFIELDED GAUGE, FOUND TO BE CORRECT. CHECKED THERMOCOUPLE RESISTANCE, ALSO FOUND TO BE WITH IN LIMITS. CHECKED ARM PIT'S WITH FINGER, FELT OKAY. CHECKED WITH MIRROR, FOUND CRACK THROUGH MESH ON SDR CA060306015Volt Regulator · failed(CAN) NO CHARGE. REPLACED VOLTAGE REGULATOR. (TC NR 20060306015)SDR KBM2005F00271Line · leakingIN-FLIGHT HYDRAULIC BOOST, INOPERATIVE. REPLACED LEAKING HYDRAULIC SUPPLY LINE FROM PUMP TO FILTER. (K)SDR CA050914003Bearing Race · brinelled(CAN) TAIL ROTOR HUB ASSY WAS REMOVED TO REPLACE TX BLADES. TO ALLOW A PROPER STATIC BALANCE THE YOKE WAS TAKEN APART AND CLEANED. ONE INNER RACE ON THE YOKE WAS SERVICEABLE, THE OTHER RACE WAS FOUND BADLY BRINELLED. THE ASSEMBLY LOOKED TO BE PROPERLY GREASSDR CA050916003Filter · incorrect(CAN) A PHYSICAL DIFFERENCE WAS NOTICED ON FILTERS 50-075-1. A SCREEN HOLE PATTERN WAS FOUND TO BE OUT OF SPECIFICATION.SDR YTRR105931Fuel Control · out of adjustAIRCRAFT STARTING HOT. UNABLE TO ADJUST FUEL CONTROL TO CORRECT HOT STARTING.SDR CA051017007Governor · unserviceableNR WAS REPORTED AS SURGING WITH EVERY COLLECTIVE MOVEMENT. LINEAR ACTUATOR DISCONNECTED FROM GOVERNOR LEVER AND LEVER WAS FOUND TO BE VERY DIFFICULT TO ROTATE. WHEN FORCED TO ROTATE THE ARM WOULD RELEASE AND BIND INTERMITTENTLY. GOVERNOR REPLACED AND A/C RESDR CA050912002Bushing · cracked(CAN) AFTER DISASSEMBLY THIS ITEM WAS SENT FOR NDT AND WAS RETURNED WITH CRACK INDICATIONS.SDR CA051017008Fitting · unserviceableRT HORIZONTAL STABILIZER MOUNT FITTING FOUND CRACKED. THE STABILIZER SPAR WAS FOUND DAMAGED AS A RESULT OF THE FITTING DAMAGE AND WAS REPLACED ALONG WITH THE STABILIZER.SDR CA050906002Pressure Switch · failed(CAN) FUEL FILTER LIGHT ON. REPLACED PRESSURE SWITCH P/N 42D208.SDR CA050919003Governor · malfunctioned(CAN) DROOPING NR, AND WOULD NOT RECOVER. GOVERNOR REPLACED, NO FURTHER DEFECTS.SDR CA050826008Governor · leaking(CAN) DURING POST INSPECTION GROUND RUNS, THE AIRCRAFT GOVERNOR WOULD NOT RECOVER FROM DROOPING OFF. THE GOVENOR WAS REPLACED AND AIRCRAFT WAS RETURNED TO THE FLIGHTLINE.SDR CA050919005Servo · leaking(CAN) HYDRAULIC LEAK WAS NOTED DURING MAINTENANCE. SERVO REPLACED, NO FURTHER DEFECTES NOTED.
Back to Allison 250-C20