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 97ZZZX3425Spool Bearing · wrong partPER AD 82-24-05, INSPECTION REQUIRED TO DETERMINE IF SPOOL BEARING IS CORRECT TYPE. PREVIOUS REPAIR STATION INSPECTED IT AND STATED ON REPAIR TAG THAT SPOOL BEARING WAS CORRECT, WHEN, IN FACT, IT WAS NOT.Jul 3, 1997 · Turbine GovernorSDR CA970715012Bushing · debonded(CAN) RIGHT HAND HORIZONTAL STABILIZER FOUND WITH EXCESSIVE MOVEMENT. OVER 2 INCHES IN BOTH VERTICAL AND HORIZONTAL DIRECTIONS. BUSHING HAD DEBONDED AND SCORED 2 GROOVES IN BOTTOM OF SPAR P/N 206-020-120-011. ALSO, INBOARD FITTING WAS ELLIPTICAL RATHER THAJun 24, 1997 · Bell 206B · Horizontal Stabilizer, Attach FittingsSDR AU970743Compressor · fod(AUS) COMPRESSOR DAMAGED BY FODJun 22, 1997 · Bell 206B · Turbine Engine Compressor SectionSDR CA970626013Fuel Send Unit · inaccurate(CAN) FUEL QUANTITY DROPPED TO 10 GALLONS AND HELD THEN INDICATED ZERO GALLONS.Jun 20, 1997 · Bell 206B · Fuel Quantity IndicatorSDR CA970630003Bearing · cracked(CAN) WHEN REPLACING GRIPS FOR TX FOUND BEARING WITH A CRACKED SEPARATOR.Jun 13, 1997 · Bell 206B · Main Rotor HeadSDR CA970626010Blower Motor · sheared(CAN) SCREWS SHEARED OFF IN MOUNTING BRACKET.May 28, 1997 · Bell 206B · Heating SystemSDR CA970609012Governor · malfunctioned(CAN) GOVERNOR DROOPS TO 94 PERCENT NR AND THEN OVERSPEEDS TO 105 PERCENT. ROOP COMPENSATOR IS SET TO MAXIMUM.May 24, 1997 · Bell 206B · Turbine GovernorSDR CA970528012Seal · leaking(CAN) SEAL HAS LEAKED EXCESSIVELY SINCE INSTALLATION IN TAIL ROTOR GEARBOX.May 22, 1997 · Bell 206B · Tail Rotor GearboxSDR CA970626008Indicator · out of limits(CAN) FUEL QUANTITY INDICATOR INSTALLED AND FOUND OUT OF LIMITS FOR CALIBRATION.May 15, 1997 · Bell 206B · Fuel Quantity IndicatorSDR AU970626Compressor · fod(AUS) COMPRESSOR DAMAGED BY FOD - INSPECTION SUGGESTS THAT THE FOD WAS A SOFT OBJECT SUCH AS A WASPS NEST RATHER THAN A HARD METALIC TYPE OBJECTMay 13, 1997 · Bell 206B · Turbine Engine Compressor SectionSDR CA970626012Tot Indicator · frayed(CAN) TOT INDICATOR RECEIVED FROM O/H WITH ELECTRICAL PLUG FOR THE INSTRUMENT LIGHTING TORN OFF WITH THE FRAYED ENDS OF WIRING REMAINING.May 7, 1997 · Bell 206B · Engine Temperature Indicating SystemSDR CA970526005Frame · cracked(CAN) FOUND RIVET LOOSE AT STA 142.33. CHECK INSIDE AIRFRAME REVEALED FRAME CRACKED. AIRCRAFT TT: 9,419 HOURS.May 2, 1997 · Bell 206B · Fuselage Main, FrameSDR CA970526006Bulkhead · cracked(CAN) CRACK FOUND AT TAIL ROTOR GEARBOX ATTACHMENT POINT. LEFT REAR BOLT HOLE. AIRCRAFT TT: 9,419 HOURS.May 2, 1997 · Bell 206B · Fuselage Main, BulkheadSDR CA970609008Switch · broken(CAN) INTERCOM TRANSMIT CONTACTOR IN SWITCH BROKE. THIS CAUSED THE RADIO TRANSMIT SIDE TO BE JAMMED THEREBY PREVENTING THE PILOT FROM TRANSMITTING.Apr 30, 1997 · Bell 206B · Interphone/Passenger Announcement (PA) SystemSDR CA970506018Oil Tank · cracked(CAN) ENGINE OIL TANK LOOSE, FOUND OIL TANK SUPPORT FLANGE HAD COMPLETELY BROKEN AROUND ONE ATTACHING BOLT HOLEApr 23, 1997 · Enstrm ENSTROM480 · Engine Oil Storage (Airframe Furnished)SDR CA970528015Mag Seal · leaking(CAN) MAGNETIC SEAL SQUEELING ON SHUT DOWN SINCE INSTALLATION. OIL DARK AND BLACK, NON-MAGNETIC FILM IN FILTER.Apr 16, 1997 · Bell 206B · Main Rotor GearboxSDR CA970609005Cover · loose(CAN) ISOLATION MOUNT COVER AND SCREWS LOOSE, CAUSING INTERMITTANT VIBRATION IN-FLIGHT.Apr 16, 1997 · Bell 206B · Main Rotor Transmission MountSDR CA970528017Trunnion · offset(CAN) MAIN ROTOR BALANCED AND ALIGNED STATICALLY PRIOR TO INSTALLATION. SEVERE VIBRATIONS ON GROUND RUN. TRUNNION WAS FOUND TO BE OFFSET BY 0.009 INCH. ADJUSTMENT SCREWS COULD NOT BE ADJUSTED.Apr 14, 1997 · Bell 206B · Main Rotor HeadSDR CA970422039Shaft · cracked(CAN) CRACK ORIGINATING INSIDE SHAFT FLANGE, SPREADING OUTWARD UNTIL PAST FLANGE. THE CRACK TURNED 90 DEGREES AND SPREAD AROUND SHAFT.Apr 11, 1997 · Enstrm ENSTROM480 · Engine/Transmission CouplingSDR CA970422021Support Assy · cracked(CAN) DROOP COMPENSATOR SUPPORT ASSEMBLY FOUND CRACKED. CRACK WAS APPROX 1 INCH BELOW PIVOT POINT FOR THE BELLCRANK ON THE INBOARD PORTION OF THE SUPPORT.Apr 7, 1997 · Bell 206B · Main Rotor Indicating SystemSDR CA970609003Seal · leaking(CAN) INPUT SEAL AREA WOULD NOT STOP LEAKING . FOUR SEALS AND SPACERS CHANGED WITH NO SUCCESS.Mar 31, 1997 · Bell 206B · Tail Rotor GearboxSDR CA970609004Freewheel Unit · leaking(CAN) CENTER PLUG LEAKING OIL INTO CAVITY BETWEEN FREE WHEELING UNIT AND INPUT DRIVESHAFT FLANGES. OIL THEN TRANSFERRING INTO DRIVESHAFT COUPLING VIA VENT HOLE IN COUPLING CAP. GREASE IN COUPLING IS DILUTED BY OIL CAUSING GREASE LEAKAGE.Mar 31, 1997 · Bell 206B · Engine/Transmission CouplingSDR CA970422002Leg · cracked(CAN) CRACK FOUND AT AIRFRAME SIDE OF ENG MOUNT ATTACHMENT.Mar 22, 1997 · Bell 206B · Engine Mount SectionSDR CA970421059Tube · leaking(CAN) TUBE ASSEMBLY LEAKING. TUBE ENCASED IN HEAT SHRINK MAKING IT DIFFICIULT TO ASCERTAIN ACTUAL AREA OF LEAKAGE.Mar 20, 1997 · Bell 206B · Engine Oil Distribution (Airframe Furnished)SDR CA970528018Governor · overspeed(CAN) ENGINE OVERSPEEDS AND GOVERNOR WILL NOT RECOVER.Mar 18, 1997 · Bell 206B · Turbine GovernorSDR CA970327018Freewheel Unit · leaking(CAN) FRONT SEAL OF FREEWHEEL UNIT LEAKING.Mar 11, 1997 · Bell 206B · Engine/Transmission CouplingSDR CA970421043Tach Generator · sheared(CAN) N1 TACH GENERATOR SHAFT SHEARED.Mar 11, 1997 · Bell 206B · Engine RPM Indicating SystemSDR CA970421044Gearbox · leaking(CAN) INPUT SEAL LEAKING. 5 ATTEMPTS AT SEAL REPLACEMENT COULD NOT STOP GEARBOX LEAKING, GEARBOX REPLACED.Mar 10, 1997 · Bell 206B · Tail Rotor GearboxSDR HEEA979158Housing · below specsRECEIVING INSPECTION REVEALED: MEASURED .005 LEFT/.006 RIGHT BELOW SPECS ON GEARBOX HOUSING. COMPRESSOR MOUNT PAD STUDS AS MARKED.Mar 7, 1997 · Turbine Engine Accessory DriveSDR CA970327024Link · worn(CAN) DOOR LATCH OPENING LINK WAS CHAFING ON NUTPLATE SECURING PLATE COVER P/N 206-031-501-104. LINK WAS SUBSTANTIALLY DAMAGED TO THE POINT OF BEING WORN ALL THE WAY THROUGH.Feb 26, 1997 · Bell 206B · Passenger/Crew DoorsSDR CA970311002Seal · leaking(CAN) NR 1 SEAL LEAKING. PART TC: 11,543.Feb 18, 1997 · Bell 206B · Turbine Engine Compressor SectionSDR CA970311022Seal · leaking(CAN) NR 1 SEAL LEAKING. PART TC: 11,543.Feb 18, 1997 · Bell 206B · Turbine Engine Compressor SectionSDR CA970311037Switch · broken(CAN) ELECTRICAL TERMINAL BROKE OFF FUEL PRESSURE SWITCH UPON INSTALLATION. TERMINAL APPEARS TO HAVE BEEN SOLDERED ON.Feb 18, 1997 · Bell 206B · Fuel Pressure IndicatorSDR 97ZZZX1024Tube · crackedDURING OVERHAUL OF THE TURBINE, FOUND THE BEARING OIL TUBE TO HAVE A CRACK IN THE FLARE.Feb 17, 1997 · Turbine Engine Oil SystemSDR CA970311090Case · worn(CAN) ENGINE POWER CHECK DOWN. COMPRESSOR CASE WAS FOUND WORN AND PIECES FOUND MISSING FROM LINING AT 4TH AND 5TH STAGES.Feb 5, 1997 · Bell 206B · Turbine Engine Compressor SectionSDR CA970212005Line · split(CAN) SPLIT PITOT LINE CONNECTING PITOT TUBE TO THE PITOT DRAIN AND PITOT SYSTEM. SUSPECT WATER FROZE IN LINE AND CAUSED IT TO SPLIT.Feb 4, 1997 · Bell 206B · Pitot/Static SystemSDR CA970311089Pylon Support · loose(CAN) BEARING LOOSE, TEFLON COMING OFF BEARING.Feb 4, 1997 · Bell 206B · Main Rotor Transmission MountSDR CA970206015Bolt · cracked(CAN) WHILE BUILDING UP AN ENGINE AND INSTALLING A COMPRESSOR, THE BOLT USED TO RETAIN THE COMPRESSOR TO THE GEARBOX. IT WAS A NEW BOLT, BUT UPON CLOSE EXAMINATION USING A GLASS, A CRACK WAS FOUND WHERE THE LANDS CONVERGE.Jan 30, 1997 · Bell 206B · Turbine Engine Compressor SectionSDR CA970311084Circuit Breaker · worn(CAN) FORWARD BOOST PUMP INTERMITTANT. NOT SWITCHING ON. CIRCUIT BREAKER WORN.Jan 24, 1997 · Bell 206B · Fuel Boost PumpSDR CA970311081Sending Unit · failed(CAN) FUEL SENDING UNIT SENDING ERRONEOUS READINGS. DROPPING FROM 15-20 GALS TO ZERO.Jan 16, 1997 · Bell 206B · Fuel Quantity SensorSDR CA970219003Tube Assembly · corroded(CAN) ALUMINUM MAIN FUEL SYSTEM SUPPLY TUBE HAS A STEEL SLEEVE BETWEEN THE "B" NUT AND THE TUBE (FLARE), THIS SLEEVE WAS FOUND BADLY CORRODED. THE TUBE FLARE AND ADJOINING FITTING WERE ALSO CORRODED ALMOST TO THE POINT OF FAILING.Jan 15, 1997 · Bell 206B · Aircraft Fuel Distribution SystemSDR CA970311080Cooler · corrosion(CAN) PRIOR TO INSTALLATION, THE INSPECTION REVEALED CORROSION AT BOTH THE INLET AND OUTLET PORTS, AS WELL AS A SUBSTANTIAL AMOUNT ON THE BYPASS VALVE.Jan 15, 1997 · Bell 206B · Engine Fuel/Oil CoolerSDR 97ZZZX3990Screen · contaminatedON JANUARY 12, 1997, A HUGHES 369D WAS INVOLVED IN AN ACCIDENT DUE TO FUEL STARVATION (SEE ACCIDENT NR LAX97LA088). THE STARVATION APPEARS TO HAVE BEEN CAUSED BY CONTAMINATION COLLECTING ON THE FUEL NOZZLE SCREEN RESTRICTING THE FLOW AND SUBSEQUENTLY COLLAPSIJan 12, 1997 · N7012G · Hughes 369D · Fuel Injector NozzleSDR CA970311076Filter · wrong part(CAN) FACET OIL FILTER FOUND INSTALLED IN ENGINE OIL SCAVENGE FILTER LOCATION DURING 200 HOUR CHECK.Jan 11, 1997 · Bell 206B · Engine Oil Distribution (Airframe Furnished)SDR CA970421056Gear · worn(CAN) REAR ADAPTER SPLINES WORN WELL BEYOND LIMITS.Jan 6, 1997 · Bell 206B · Engine/Transmission CouplingSDR CA970311074Seal · leaking(CAN) T/R ASSY INPUT SEAL FOUND LEAKING EXCESSIVELY.Jan 6, 1997 · Bell 206B · Tail Rotor HeadSDR CA970211003Linear Actuator · cracked(CAN) ACTUATOR EXTEND LIMIT SWITCH HOUSING WAS FOUND CRACKED. A RIGGING CHECK WAS CARRIED OUT, NO LIMITS EXCEEDED.Dec 20, 1996 · Bell 206B · Turbine GovernorSDR 97ZZZX786Seal · under spec3 HOURS AFTER SEAL INSTALLATION, PILOT NOTICED OIL LEAK IN STARTER/GEN AREA DURING PREFLIGHT INSP. DURING GROUND RUN, ENG OIL WAS FOUND TO BE LEAKING AT A RATE OF 12 DROPS PER MINUTE. STARTER/GEN WAS REMOVED AND P/N A6854424 WAS FOUND HALF OUT OF SEAL BORE. Dec 18, 1996 · N90215 · Bell 206B · Turbine Engine Oil SystemSDR CA970311072Channel · misrepaired(CAN) UNAPPROVED REPAIR INCORPORATED. NO REPAIRS ALLOWED IN THIS AREA PER STRUCTURES REPAIR MANUAL.Nov 25, 1996 · Bell 206B · Fuselage Miscellaneous StructureSDR CA970311073Support · cracked(CAN) SUPPORT WAS CRACKED IN FORWARD UPPER RIGHT HAND RADIUS. NO CRACKS ALLOWED IN THIS AREA. THIS DAMAGE WAS VISIBLE ONLY WITH FUEL CELL REMOVED. AIRCRAFT TT: 15,819 HOURS.Nov 25, 1996 · Bell 206B · Fuselage Miscellaneous Structure
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