Allison 250-C20B

Service difficulty reports · 1,981

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 = '250C20B'
  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 AC2A081230Washer · separatedPOTTING COMPOUND FAILED, WASHERS AND CLIP CAME OFF THE END OF SPLINE DRIVE. GOVERNOR REPLACEDOct 18, 2002 · N8776 · Bolkms BO105S · Turbine GovernorSDR CA021129011Connector · leaking(CAN) AME INSTALLED TURBINE ASSEMBLY FOLLOWING OVERHAUL. ON GROUND RUN SEVERE OIL LEAK WAS OBSERVED FROM 6 & 7 PRESSURE OIL CONNECTOR ('TEE FITTING) AREA. INSPECTION REVEALED THAT TWO RETAINING BOLTS HAD LESS THAN 10 IN/LBS. BREAK TORQUE. AME REPLACED CRUSOct 7, 2002 · Bell 206B · Turbine Engine Oil SystemSDR ERAA081159Fuel Control · malfunctionedFUEL CONTROL CAUSES HOT STARTS AND SLOW ACCELERATION. REPAIRED AND TESTED IAW HONEYWELL OHM FORM 15 602E CEB 1382 EMBODIED.Sep 26, 2002 · N298EH · Bolkms BO105S · Fuel Control/Turbine EnginesSDR ERAA081160Fuel Control · malfunctionedFUEL CONTROL CAUSES ROTOR DROOP, UNIT OVERHAULED IAW HONEYWELL OHM FOR 15 602E.Sep 26, 2002 · N135EH · Bolkms BO105A · Fuel Control/Turbine EnginesSDR ERAA081161Fuel Control · malfunctionedNR 2 ENGINE HANGS AT 50 PERCENT N1 FOR 3-5 SECONDS THEN RAPIDLY ACCELS TO 537 DEGREES N1. REPLACEMENT FIXED PROBLEM. FUEL CONTROL OVERHAULED, CLOSE TO TX REQUIRES MODS, CEB'S. OVERHAULED IAW HONEYWELL OHM FOR 15-602E.Sep 26, 2002 · N124EH · Bolkms BO105S · Fuel Control/Turbine EnginesSDR CA020923006Saddle · cracked(CAN) SADDLE FOUND CRACKED DURING 100 HR INSPECTION. NOTE : TRAINING THE DAY BEFORE SADDEL FOUND CRACKED.Sep 23, 2002 · Bell 206B · Main Landing GearSDR AUS20021367Seal · seized(AUS) ENGINE COMPRESSOR SEIZED. INVESTIGATION FOUND THE REAR LABYRINTHSEAL HAD PICKED UP IN THE SEAL HOUSING.Sep 21, 2002 · Bell 206B3 · Turbine Engine Compressor SectionSDR CA031117011Gearbox · contaminated(CAN) ENGINE CHIP LIGHT ILLUMINATED DURING START. THE ENGINE WAS REMOVED AND SENT OUT FOR REPAIR. THE SUSPECTED CAUSE OF THE METAL CONTAMINATION WAS THE SPUR ADAPTER GEARSHAFT WHICH WAS A PMA PART OR THE 2.5 BEARING.Sep 9, 2002 · Bell 206B · Main Rotor GearboxSDR CA020910008Blade · cracked(CAN) DURING 100 HOUR INSPECTION, ENGINEER FOUND BLADE CRACKED JUST OUT BOARD OF THE ROOT FITTING. BLADE WAS REMOVED AND REPLACED WITH NEW UNIT.Sep 6, 2002 · Hughes 369D · Main Rotor BladesSDR CA020913007Clip · debonded(CAN) THE EXPOXY HOLDING THE SAFETY CLIP IN PLACE BECAME UNBONDED ALLOWING THE CLIP TO MOVE AND ALLOWING THE DRIVE GEAR TO DISCONNECT FROM THE SHAFT.Sep 5, 2002 · Bell 206B · Turbine GovernorSDR CA020912008Fuel Filter · failed(CAN) DURING START N1 SURGED THEN OPERATED NORMALLY. AIRFRAME FUEL FILTER, ENGINE DRIVE FUEL FILTER, HIGH PRESSURE FUEL FILTER, INLET SCREEN CHANGED OR CLEANED. SOME DEBRIS FOUND IN AIRFRAME AND ENGINE DRIVEN FUEL PUMP.Aug 29, 2002 · Bell 206B · Aircraft Fuel Filter/StrainerSDR CA021025001Window · separated(CAN) DURING CRUISE FLIGHT PILOT HEARD A POPPING SOUND WHICH HE THOUGHT WAS THE RT FORWARD DOOR OPENING. HE GLANCED OVER AND SAW FRAGMENTS OF PLASTIC ON THE SEAT BESIDE HIM. THE COMPLETE WINDOW HAD DEPARTED AND LEFT JUST THE VERY EDGE OF THE MATERIAL WHICH IS Aug 28, 2002 · Hughes 369E · Flight Compartment WindowsSDR CA021002008Seal · leaking(CAN) ENGINE OIL WAS DETECTED COMING THROUGH THE UPPER AFT RT INTERIOR PANEL AND GRAVITY LEAKAGE DOWN TO THE AIRCRAFT FLOOR. CONDITION ONLY EXISTED UNDER STEEP RT TURNS OF THE HELICOPTER. A/C RETURNED TO BASE AND UPON INVESTIGATION OF THIS SITUATION IT WAS DETAug 25, 2002 · Hughes 369D · Engine Oil Storage (Airframe Furnished)SDR CA021002010Gearbox · damaged(CAN) DURING A SCHEDULED 600 HOUR INSPECTION. DAMAGE WAS FOUND ON THE UNDER SIDE OF TAIL ROTOR GEARBOX CASE DUE TO A MIS-ALIGNMENT OF THE T/R PUSH PULL TUBE ADAPTER. DAMAGE WAS APPROXIMATELY .020 DEEP AND UPON INVESTIGATION IT WAS DETERMINED THAT PIN HAD EXCAug 25, 2002 · Hughes 369D · Tail Rotor GearboxSDR CA021029002Seal · leaking(CAN) ENGINE OIL WAS DETECTED COMING THROUGH THE UPPER AFT RT SIDE INTERIOR PANEL AND GRAVITY LEAKAGE DOWN TO THE AIRCRAFT FLOOR. THIS CONDITION ONLY EXSISTED UNDER STEEP RT TURNS OF THE HELICOPTER. AIRCRAFT RETURNED TO BASE AND UPON INVESTIGATION, IT WAS DETEAug 25, 2002 · Hughes 369D · Turbine Engine Oil SystemSDR CA021029003Case · damaged(CAN) DURING A 600 HOUR INSPECTION OF AIRCRAFT, DAMAGE WAS FOUND ON THE UNDER SIDE OF THE T/R GEARBOX CASE. DUE TO A MIS-ALIGNMENT OF THE T/R PUSH PULL TUBE ADAPTER. DAMAGE WAS APPROX .020 DEEP & UPON INVESTIGATION IT WAS DETERMINED THAT PIN HAD EXCESSIVE WEARAug 25, 2002 · Hughes 369D · Tail Rotor GearboxSDR CNM009ADM902Turbine Wheel · crackedNR 1 LOCKUP WAS FOUND, HEAVY RUB OF THE 29-34 AIR SEAL OF THE 2ND STAGE TURBINE NOZZLE AND SEAL KNIVES OF THE 1ST STAGE TURBINE WHEEL. 1ST STAGE TURBINE WHEEL FOUND CRACKED IF NOT FOUND WOULD HAVE BEEN CATASTROPHIC, TURBINE WHEEL WOULD OF EXITED THE ENGINE.Aug 23, 2002 · N142MK · Hughes 369E · Turbine SectionSDR EOO2002F0000ACombust Chamber · crackedAIRCRAFT SUDDENLY STARTED TO RUN HOT, SUBSEQUENT POWER CHECK SHOWED ENGINE RUNNING 75 DEGREE C, HOTTER THAN PREVIOUS POWER CHECK TWO DAYS BEFORE. AIRCRAFT LANDED AND ON INSPECTION IT WAS FOUND THAT THE OUTER COMBUSTION CAN WAS CRACKED IN THE ARMPIT AREA.Aug 22, 2002 · Doug DC3DR183090C · Turbine Engine Combustion SectionSDR CA020829009Case · cracked(CAN) ENGINE ASSEMBLY HAD HIGH TOT. UPON INSPECTION ENGINEER DISCOVERED CRACK IN ARMPIT AREA.Aug 19, 2002 · Hughes 369D · Turbine Engine Combustion SectionSDR CA020813009Track · debonded(CAN) LT AFT SLIDING WINDOW TRACK BONDING FAILURE TO WINDOW PANEL. WHEN TRACK BONDING FAILED, THE SLIDING WINDOW FLEW AWAY FROM THE AIRCRAFT. HELICOPTER LANDED WITH NO FURTHER DAMAGE.Aug 13, 2002 · Bolkms BO105C · Passenger Compartment WindowsSDR CA020903003Track · broken(CAN) LT AFT SLIDING WINDOW TRACK BONDING FAILURE TO WINDOW PANEL WHEN TRACK BONDING FAIL THE SLIDING WINDOW FLEW AWAY FROM AIRCRAFT. BONDING OF WINDOW TRACK TO PANEL FAILED. HELICOPTER LANDED AND NO FURTHER DAMAGED.Aug 13, 2002 · Bolkms BO105C · Door WindowsSDR CA020813003Bracket · loose(CAN) THE 2 BOLTS THAT HOLD THE TAIL ROTOR SHAFT OUTER RING BEARING TO THE BEARING BRACKET AT FRAME 9 LT BECAME LOOSE OVER A PERIOD OF 40 HOURS FROM LAST INSPECTION AND ELONGATED THE HOLES. THE BEARING ASSEMBLY STARTED TO SPIN AND HIT THE TAIL ROTOR SHAFT COVAug 3, 2002 · Bolkms BO105C · Tail Rotor Drive ShaftSDR CA020903012Bracket · deformed(CAN) THE TWO BOLTS THAT HOLDS THE TAIL ROTOR SHAFT OUTER RING BEARING TO THE BEARING BRACKET AT THE FRAME. BOLTS BECAME LOOSE OVER A PERIOD OF 40 HOURS SINCE LAST INSPECTION, BOLT HOLES BECAME ELONGATED. BEARING ASSEMBLY STARTED TO SPIN AND HIT THE TAIL ROAug 3, 2002 · Bolkms BO105C · Tail Rotor Drive ShaftSDR CA020806011Gearbox · making metal(CAN) OIL METAL CONTAMINATION IN ENGINE GEARBOX AND GEARBOX SEND FOR INSPECTION AND REPAIR.Aug 2, 2002 · Bell 206B · Turbine Engine Accessory DriveSDR HEEA080514Seal · failedENGINE REMOVED DUE TO SMOKE AND OIL COMING FROM GEARBOX VENT. UPON INSPECTION OF GEARBOX PARTS NOTED SEAL FAILED WITH LARGE PIECE BROKEN AWAY FROM SPRING AREA. SCRAPPED SEAL.Jul 31, 2002 · N2270G · Bell 206B3 · Turbine Engine Accessory DriveSDR CA020827008Sun Gear · cracked(CAN) CUSTOMER REPORTED TRANSMISSION TO BE MAKING METAL AT 185.1 SINCE OVERHAUL. TRANSMISSION RETURNED TO OUR FACILITY FOR TEARDOWN AND INSPECTION. ON TEARDOWN IT WAS FOUND THAT THE SUN GEAR HAD FAILED. THE SUN GEAR WAS INSTALLED NEW AT THE TIME OF OVERHAUL.Jul 31, 2002 · Bell 206L · Main Rotor GearboxSDR HEEA080675Igniter · damagedIGNITER PRODUCING A WEAK SPARK. ERODED INSULATOR. SCRAPPED.Jul 30, 2002 · N22743 · Bell 206B3 · Spark Plug/IgniterSDR CA020830003Governor · malfunctioned(CAN) GOVERNOR REMOVED FOR OVERSPEEDING AND DROOPING. REMOVED AT11485.1 INSTALLED AT11393.9 DIFFERENCE 91.2Jul 28, 2002 · Bell 206B · Turbine GovernorSDR 3RL072502Warning Light · illuminatedON START-UP, ENGINE CHIP LIGHT CAME ON.Jul 25, 2002 · N3RL · Bell 206B · Engine Oil Indicating SystemSDR CA021016008Pin · unstaked(CAN) POST FLIGHT INSPECTION REVEALED THE SPHERICAL BEARING ON THE DRAG PIN ASSEMBLY HAD BECOME PARTIALLY UNSTAKED. REPLACEMENT PART INSTALLED.Jul 20, 2002 · Bell 206B · Main Rotor GearboxSDR CA020729001Tip Cap · cracked(CAN) WHILE IN A STEEP DESCENT THE PILOT OBSERVED THE RIGHT HAND TIP CAP (WINGLET) GO PAST HIM AND HIT THE GROUND IN THE LANDING / WORKSITE. THE AIRCRAFT WAS LESS THAN 300 FEET AGL. THE AIRCRAFT CONTINUED DESCENT AND MADE A NORMAL POWER ON LANDING. RECOVERY ANJul 19, 2002 · Hughes 369D · Horizontal Stabilizer StructureSDR CA020829013Spline Adapter · worn(CAN) DRIVE SPLINE RETAINING CLIP AND WASHER FOUND DEPARTED FROM SHAFT. EPOXY PLUG DEPARTED.Jul 17, 2002 · Bell 206B · Turbine GovernorSDR CA020830002Governor · malfunctioned(CAN) GOVERNOR REMOVED FOR OVERSPEEDING AND DROOPING.Jul 15, 2002 · Bell 206B · Turbine GovernorSDR CA020715009Transmission · making metal(CAN) ONE CHIP LIGHT OCCURRENCE. CHIP PLUG AND FILTER INSPECTED AND AN EXCESSIVE AMOUNT OF MAGNETIC PARTICLES WERE FOUND. THE FILTER HAD BEEN INSPECTED 10 HRS PREVIOUSLY. THIS FAILURE IS USUALLY INDICATIVE OF A FAILED INPUT QUILL.Jul 12, 2002 · Bolkms BO105C · Main Rotor GearboxSDR CA020718001Transmission · making metal(CAN) WHILE IN NORMAL CRUISE CONFIGURATION "MAIN TRANSMISSION" LIGHT ILLUMINATED. PILOT ACTIVATED PULSE CHIP DETECTOR SYSTEM AND LIGHT EXTINQUISHED. THE LIGHT RE-ILLUMINATED APPROX. 1.5 HOURS LATER. THE PILOT ONCE AGAIN ACTIVATED THE PULSE CHIP. DETECTOR SYSTEJul 11, 2002 · Bolkms BO105C · Main Rotor GearboxSDR CA020716001Volt Regulator · unserviceable(CAN) AFTER NORMAL START, THE GENERATOR "ON" SWITCH WAS ACTIVATED, BUT THE GENERATOR DID NOT COME ON LINE.IN TROUBLESHOOTING THE PROBLEM, IT WAS TRACED TO A FAULTY VOLTAGE REGULATOR, WHICH WAS SUBSEQUENTLY REPLACED WITH AN AIRWORTHY PART.Jul 10, 2002 · Bell 206B · DC RegulatorSDR HEEA080451Servo · failedNR 1 ANTI ICE INOPERATIVE AND LIGHT FLASHES.Jul 9, 2002 · N7136H · Bolkms BO105S · Engine Anti-Icing SystemSDR HEEA080401Seal · tornENGINE REMOVED DUE TO MAKING METAL ON TEST CELL. FOUND NEW SEAL LIP TORN AND LEAKING.Jul 8, 2002 · N81992 · Bolkms BO105S · Turbine Engine Accessory DriveSDR CA020719001Blade · cracked(CAN) MAIN ROTOR BLADE CRACKED IN LOWER SKIN DISCOVERED AT STA 36.5.Jul 4, 2002 · Hughes 369D · Main Rotor BladesSDR CA020722016Blade · cracked(CAN) CRACK IN LOWER SKIN DISCOVERED AT STN 36.5. BLADE REMOVED FROM SERVICE. FURTHER ANALYSIS OF THE BLADE REVEALED THAT THE CRACK STARTED AT THE FIRST LIGHTENING HOLE OF THE "C" CHANNEL AND MOVED TO LOWER SKIN. THE CRACK THEN RAN LATERALLY TO THE TE AND TOWAJul 4, 2002 · Hughes 369D · Main Rotor BladesSDR CA020828009Bearing · cracked(CAN) M/R TRANSMISSION CHIP LIGHT WAS REPORTED. CHIP PLUGS INSPECTED AND FOUND TO HAVE LARGE AMOUNT OF DEBRIS. SOURCE FOUND TO BE THE T/R O/P PINION ROLLER BEARING. THE INNER RACE WAS FOUND TO BE CRACKED AND HEAVY SPALLING WAS ALSO OCCURRING. THIS INNER RACE IJul 1, 2002 · Hughes 369E · Tail Rotor GearboxSDR HEEA079912Turbine Wheel · damagedENGINE REMOVED DUE TO LOW POWER. UPON INSPECTION OF TURBINE PARTS NOTED SULFIDATION ON 1ST STAGE WHEEL BLADES. SCRAPPED WHEEL.Jun 25, 2002 · N7136H · Bolkms BO105S · Turbine SectionSDR CA020702003Governor · failed(CAN) PILOT NOTICED THAT RESPONSE TO RPM CHANGES WAS GETTING SLOWER UNTIL GOVERNOR WOULD NOT KEEP UP TO THE RPM CHANGES. GOVERNOR WOULD DROOP UPON COLLECTIVE UP MOVEMENT BUT WOULD NOT RECOVER OR INCREASE RPM. THE SAME FOR COLLECTION DOWN MOVEMENT, THE RPM WOULJun 24, 2002 · Bell 206B · Turbine GovernorSDR CA020828007Bearing · cracked(CAN) M/R CHIP LIGHT WAS REPORTED. CHIP PLUGS INSPECTED AND FOUND TO HAVE LARGE AMOUNT OF DEBRIS. SOURCE FOUND TO BE THE T/R O/P PINION ROLLER BEARING. THE INNER RACE WAS FOUND TO BE CRACKED AND HEAVY SPALLING WAS ALSO OCCURRING. THIS INNER RACE IS PRESSED ONTJun 18, 2002 · Hughes 369D · Tail Rotor GearboxSDR CA020627008Pump · failed(CAN) SUPPLY FUEL BOOST PUMP FAILED.Jun 14, 2002 · Bolkms BO105C · Engine Fuel PumpSDR ERAA080340Engine · making metalENGINE IS MAKING METAL. INITIAL INSPECTION FOUND COMPRESSOR ATTACHMENT HARDWARE LOOSE. 2 1/2 BEARING MAKING METAL, SPIN ADAPTER GEARSHAFT MAKING METAL. COMPRESSOR DUE 1750 INSPECTION. CHANGED CASE HALVES.ACTION TAKEN: INSTALLEDD NEW 2 1/2 BEARING INSTALLEDJun 12, 2002 · N298EH · Bolkms BO105S · Engine (Turbine/Turboprop)SDR HEEA079888Turbine Wheel · damagedENGINE REMOVED DUE TO 1750 HOUR INSPECTION. UPON INSPECTION OF TURBINE PARTS NOTED SULFIDATION ON 1ST STAGE WHEEL BLADES. SCRAPPED.Jun 11, 2002 · N7136H · Bolkms BO105S · Turbine SectionSDR HEEA080302Tube · crackedFOUND A STRESS CRACK IN THE FLARE OF TUBE. SCRAPPED.Jun 11, 2002 · N5031U · Bolkms BO105S · Turbine GovernorSDR ERAA080338Shaft · corrodedENGINE MAKING METAL. FOUND GEARSHAFT TEETH DAMAGED GEARBOX HOUSING CORRODED. ACTION TAKEN: INSTALLED NEW GEARSHAFT & OVERHAULED GEARBOX.Jun 11, 2002 · N124EH · Bolkms BO105S · Turbine Engine Reduction GearSDR ERAA080339Bearing · making metalENGINE MAKING METAL. INITIAL INSPECTION FOUND COMPRESSOR ATTACHMENT HARDWARE LOOSE. 2 1/2 BEARING MAKING METAL. ACTION TAKEN: INSTALLED NEW 2 1/2 BEARING AND PTO GEAR. COMPLIED WITH CEB-A-1351 REPLACE OIL TUBE.Jun 11, 2002 · N124EH · Bolkms BO105S · Engine (Turbine/Turboprop)
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