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.

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 CONTACTEDJun 1, 2007 · N411HU · Scwzer 269D · Standard Practices/StructuresSDR 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, PMay 2, 2007 · Bell 206B · Turbine GovernorSDR 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)Apr 12, 2007 · N5074R · Hughes 369D · Turbine GovernorSDR 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 THMar 20, 2007 · Bell 206B · Engine Mount SectionSDR 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)Mar 19, 2007 · Bell 206B · Starter-GeneratorSDR BAQA20070007Line · cutDURING POST FLIGHT WALK AROUND INSPECTION FOUND MAJORITY OF TAILBOOM OF AIRCRAFT COVERED IN BLACK OIL. REPAIRED CUT OIL LINE.Mar 8, 2007 · N942MS · Aerosp AS355F2 · Main Rotor GearboxSDR 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 Mar 2, 2007 · Hughes 369D · Main Rotor BladesSDR 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 OFFeb 28, 2007 · N5797X · Aerosp AS355F1 · Fire Protection System WiringSDR 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 BFeb 23, 2007 · N745HA · Agusta A109A2 · Main Rotor Mast/SwashplateSDR 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 FLOJan 27, 2007 · Hughes 369HS · Fuel Control/Turbine EnginesSDR 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.Nov 29, 2006 · N942MS · Aerosp AS355F2 · Main Rotor GearboxSDR 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)Nov 17, 2006 · Bell 206B · Fuselage Miscellaneous StructureSDR 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)Nov 3, 2006 · Bell 206B · Starter-GeneratorSDR 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)Sep 29, 2006 · Bell 206B · Engine Mount SectionSDR CA061031003Servo · leaking(CAN) EXCESSIVE FLUID LEAKAGE. LEAKING BEYOND LIMITS (TC NR 20061031003)Sep 20, 2006 · Bell 206B · Rotorcraft Servo SystemSDR 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 DOUBLESep 12, 2006 · Bell 206B · Rotorcraft Tail BoomSDR 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)Sep 7, 2006 · Bell 206B · Fuel Boost PumpSDR CA061121002Magnetic Seal · leaking(CAN) MAIN ROTOR GEARBOX MAGNETIC SEAL HAS EXCESSIVE LEAKAGE FROM MAIN INPUT SEAL. (TC NR 20061121002)Aug 26, 2006 · Bell 206B · Main Rotor GearboxSDR 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 THEAug 16, 2006 · Bell 206B · Turbine Engine Compressor SectionSDR 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 REMOJul 24, 2006 · Bell 206B · Turbine GovernorSDR 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)Jul 22, 2006 · Bell 206B · Rotorcraft Tail BoomSDR 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 SYSJun 22, 2006 · N847AL · Bell 407 · Rotorcraft Flight ControlSDR 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. SUGGMar 16, 2006 · N887LB · Bell 206B · Turbine Engine Oil SystemSDR 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)Mar 2, 2006 · N37AJ · Bell 206B · Hydraulic Pump (Electric/Engine), MainSDR 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 ANFeb 13, 2006 · Turbine Engine Oil SystemSDR 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)Feb 12, 2006 · Bell 206B · Heating SystemSDR 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 ACJan 27, 2006 · Bell 206B · Rotorcraft Servo SystemSDR 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)Dec 18, 2005 · N198H · Bell 206B · Engine (Turbine/Turboprop)SDR BAQ2005F00004Pump · unknownPUMP REMOVED IN COMPLIANCE WITH AD 03-21-09. (K)Dec 13, 2005 · N942MS · Aerosp AS355F2 · Turbine Engine Reduction GearSDR 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.Dec 5, 2005 · Bell 206B · Main Rotor HeadSDR 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 TODec 1, 2005 · Turbine SectionSDR 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 BEARNov 30, 2005 · N277DT · Scwzer 269D · Main Rotor BladesSDR 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 WASNov 22, 2005 · Bell 206B · Fuel Control/Turbine EnginesSDR 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.Nov 22, 2005 · Bell 206B · Tail Rotor Control SystemSDR EAHR200500003Gcu · malfunctionedGENERATOR CONTROL UNIT CAUSES GENERATOR RELAY TO CYCLE ON AND OFF.Nov 1, 2005 · Enstrm ENSTROM480 · DC Generating SystemSDR CA060306016Tachometer · failed(CAN) NO ROTOR TACH INDICATION. REPLACED TACH. (TC NR 20060306016)Oct 28, 2005 · Bell 206B · Main Rotor Indicating SystemSDR CA051027008Planetary Gear · mismanufactured(CAN) PLANETARY GEAR FLANKS SURFACE FINISH EXCEED THE ENGINEERING DRAWING REQUIREMENT OF (RMS 8 RA).4 GEARS IAW XMSN IAW 206B.Oct 24, 2005 · Bell 206B1 · Main Rotor GearboxSDR 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 Oct 23, 2005 · Bell 206B · Turbine Engine Combustion SectionSDR CA060306015Volt Regulator · failed(CAN) NO CHARGE. REPLACED VOLTAGE REGULATOR. (TC NR 20060306015)Oct 21, 2005 · Bell 206B · AC RegulatorSDR KBM2005F00271Line · leakingIN-FLIGHT HYDRAULIC BOOST, INOPERATIVE. REPLACED LEAKING HYDRAULIC SUPPLY LINE FROM PUMP TO FILTER. (K)Sep 15, 2005 · N73DP · Bell 206B · Hydraulic System, MainSDR 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 GREASSep 14, 2005 · Bell 206B · Tail Rotor HeadSDR CA050916003Filter · incorrect(CAN) A PHYSICAL DIFFERENCE WAS NOTICED ON FILTERS 50-075-1. A SCREEN HOLE PATTERN WAS FOUND TO BE OUT OF SPECIFICATION.Sep 14, 2005 · Bell 206B · Engine Oil Distribution (Airframe Furnished)SDR YTRR105931Fuel Control · out of adjustAIRCRAFT STARTING HOT. UNABLE TO ADJUST FUEL CONTROL TO CORRECT HOT STARTING.Sep 5, 2005 · N21RT · Bell 206B3 · Fuel Control/Turbine EnginesSDR 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 RESep 1, 2005 · Bell 206B · Turbine GovernorSDR CA050912002Bushing · cracked(CAN) AFTER DISASSEMBLY THIS ITEM WAS SENT FOR NDT AND WAS RETURNED WITH CRACK INDICATIONS.Aug 31, 2005 · Bell 206B · Rotorcraft Servo SystemSDR 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.Aug 30, 2005 · Bell 206B · Fuselage, Stabilizer Attach FittingsSDR CA050906002Pressure Switch · failed(CAN) FUEL FILTER LIGHT ON. REPLACED PRESSURE SWITCH P/N 42D208.Aug 29, 2005 · Bell 206B · Fuel Pressure SensorSDR CA050919003Governor · malfunctioned(CAN) DROOPING NR, AND WOULD NOT RECOVER. GOVERNOR REPLACED, NO FURTHER DEFECTS.Aug 19, 2005 · Bell 206B · Turbine GovernorSDR 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.Aug 18, 2005 · Bell 206B · Turbine GovernorSDR CA050919005Servo · leaking(CAN) HYDRAULIC LEAK WAS NOTED DURING MAINTENANCE. SERVO REPLACED, NO FURTHER DEFECTES NOTED.Aug 18, 2005 · Bell 206B · Rotorcraft Servo System
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