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.

SDR HEEA201201132925Bearing · spalledENGINE REMOVED DUE TO DEBRIS FOUND ON SCAVENGE FILTER. SPALLING FOUND ON OUTER RACE OF NR 5 BEARING AT SPLIT. REPLACED NR 5 BEARING WITH NEW.Jan 13, 2012 · N427PH · Bell 407 · Turbine SectionSDR ALGA1311611212Rod End · wornROD END WORN BEYOND REPAIRABLE LIMITS.Jan 11, 2012 · N577AL · Bell 407 · Main Rotor ControlSDR ALGA7050110121Mount · crackedREAR MOUNT FOUND CRACKED AT BOLT HOLE AT 2:00 POSITION THROUGH VENT TUBE. SCRAPPED REAR MOUNT.Jan 10, 2012 · N5NBFI · Bell 407 · Engine Mount SectionSDR HEEA2012010832853Bearing · spalledTURBINE REMOVED DUE TO METAL IN OIL. UPON INSPECTION OF NR 5 BEARING FOUND SPALLING ON OUTER RACE. REPLACED WITH NEW.Jan 8, 2012 · N501PH · Bell 407 · Turbine SectionSDR HEEA132849Skin · dentedFWD LOWER SKIN WAS FOUND DENTED/CRACKED. OPENJan 6, 2012 · N494PH · Bell 407 · Fuselage Main, Plate/SkinSDR QMLA2012010412003Fuel Nozzle · separatedON COMPLETION OF A HOVERING AUTOROTATION IN THE COURSE OF A CHECKRIDE, PILOT’S HEARD A NOISE COMING FROM THE ENGINE DURING HOVER FLIGHT. ALL ENGINE INDICATIONS WERE NORMAL DURING HOVER, ACFT WAS TAXIED TO PARK. DURING HOVER TAXI MANEUVER, A LOUD POP WAS HEARJan 4, 2012 · N407TX · Bell 407 · Fuel Injector NozzleSDR HEEA201201032909Bearing · spalledENGINE REMOVED DUE TO FOREIGN OBJECT DAMAGE. NR 5 BEARING EXHIBITED ROUGH ROTATION AND SPALLING OF OUTER RACE. INSTALLED NEW BEARING.Jan 3, 2012 · N422PH · Bell 407 · Turbine SectionSDR HEEA2011123032855Bearing · spalledENGINE WAS REMOVED DUE TO FLUCTUATING OIL PRESSURE. NR 5 BEARING EXHIBITED SPALLING AT OUTER RACE SPLIT. REPLACED WITH SERVICEABLE PART.Dec 30, 2011 · N420PH · Bell 407 · Turbine SectionSDR CA111219004Bearing · loose(CAN) THE 2.5 BEARING CAGE NUTS WERE FOUND LOOSE AND 1 STUD STARTED TO BACK OUT. THE TORQUEMETER SUPPORT FLANGE, PN 6889191 IS RETAINED BY 4 NUTS. 2 OF THE NUT/STUDS ASSY WERE FOUND LOOSE. 1 NUT WAS LOOSE. ONLY 1 NUT WAS TIGHT. THE 1 NUT THAT WAS FOUND TDec 15, 2011 · Bell 407 · Accessory GearboxesSDR HEEA2011121132678Bearing · brokenPILOT REPORTED A CHIP LIGHT AFTER TAKEOFF. AS ACFT WAS TURNING A BASE LEG FOR LANDING AT EC278B. A LOUD WHINING NOISE WAS HEARD FOLLOWED BY A LOUD POPPING NOISE AND A YAW. COMPLETED A SUCCESSFUL WATER LANDING. TEARDOWN INSPECTION REVEALED 25 PERCENT OF NR Dec 1, 2011 · N435PH · Bell 407 · Turbine Engine Compressor SectionSDR HEEA132858Engine · failedENGINE CHIP LIGHT ILLUMINATED, PILOT TURNED TO LAND AT NEAREST PLATFORM. ON APPROACH TO PLATFORM ENGINE STARTED MAKING A LOUD WHINING NOISE FOLLOWED BY LOUD POPPING NOISE AND AIRCRAFT YAWED. AUTO-ROTATED, DEPLOYED FLOATS AND LANDED IN WATER.Dec 1, 2011 · N435PH · Bell 407 · Engine (Turbine/Turboprop)SDR ZD4R20111201001Bearing Cage · looseDURING INSPECTION OF GEARBOX FOR METAL IN OIL, IT WAS NOTED THAT 5 OF THE 6 STUDS THAT SECURE THE 2.5 BEARING CAGE TO THE GEARBOX COVER ASSY HAD BACKED OUT ALLOWING MOVEMENT OF THE CAGE INSIDE THE GEARBOX. WHILE LOOSENING HARD WEAR THAT RETAINS THE BEARING CANov 28, 2011 · N940SP · Bell 407 · Turbine Engine Reduction GearSDR HEEA2011112813268Bearing · spalledIMPELLER BEARING NR 5 EXHIBITED SPALLING OUTER RACE. REPLACED WITH SERVICEABLE BEARING.Nov 28, 2011 · N440PH · Bell 407 · Turbine SectionSDR CA111104007Ring · cracked(CAN) SWASHPLATE ASSY IN FOR A 2500 HR INSPECTION WHEN THE COMPONENT SHOP NOTICED 2 DISTINCT CRACKS ON THE INSIDE OF THE RING AS VIEWED FROM THE HOLES ON THE BOTTOM OF THE STATIONARY INNER RING.Nov 4, 2011 · Bell 407 · Main Rotor Mast/SwashplateSDR CA111109009Metering Valve · inoperative(CAN) DURING FLIGHT, THE PILOT EXPERIENCED A RESTART FAULT CAUTION LIGHT. HE THEN RETURNED TO BASE, DURING SHUTDOWN A FADEC DEGRADED CAUTION LIGHT CAME ON. HE NOTIFIED MX STAFF. THE FADEC SYS INDICATED THERE WAS A PROBLEM IN THE HMU METERING VALVE WITH A FAOct 26, 2011 · Bell 407 · Fuel Controlling SystemSDR CA111026003Bearing · debonded(CAN) WHILE CARRING OUT A DAILY CHECK, A LITTLE RUBBER AROUND THE SPINDLE OF THE SHEAR BEARING. FURTHER INVESTIGATION LEAD TO THE DEBONDING OF THE RUBBER COMPOUND TO THE CENTER SPINDLE.Oct 12, 2011 · Bell 407 · Main Rotor HeadSDR CA111013007Blade · delaminatedWHILE DOING A 600 HR INSPECTION TAP TEST OF THE M/R BLADE, IT NOTICED THAT THERE WAS A DULL SOUND NEAR STATION 183 TO 185 ON THE UNDER SIDE OF THE BLADE. THE APPROXIMATE CHORD WISE LENGTH 2".Oct 11, 2011 · Bell 407 · Main Rotor BladesSDR 2011FA0000653Bearing · failedWHILE IN CRUISE FLIGHT, ENGINE CHIP LIGHT ILLUMINATED, PILOT LANDED IN FIELD. INSP OF BOTH ENGINE CHIP DETECTORS REVEALED MULTIPLE CHIPS. THE SOURCE OF THE METAL WAS DUE TO FAILURE OF THE PTO BEARING, PN (M250-10121) THE ENGINE GEARBOX IS AN "ON CONDITION" ISep 30, 2011 · N407NC · Bell 407 · Engine (Turbine/Turboprop)SDR HEEA2011927132675Bearing · spalledENGINE REMOVED DUE TO METAL IN OIL. NR 5 BEARING EXHIBITED SPALLING AT OUTER RACE SPLIT.Sep 27, 2011 · N438PH · Bell 407 · Turbine SectionSDR CA110929013Blade · cracked(CAN) THE ENGINEER WAS TRYING TO TRACK AND BALANCE THE MAIN ROTOR AFTER DOING MANY RUNS AND IT WAS NOTICED THAT THERE WAS A CRACK ON THE TAB.)Sep 25, 2011 · Bell 407 · Main Rotor BladesSDR IAVA201109140001Structure · crackedPILOT REPORTED THAT THERE WAS A VIBRATION IN THE ACFT. INVESTIGATION FOUND THE RIVETS WORKING AT TAILBOOM TO TAIL ROTOR GEARBOX CASTING MOUNT. FURTHER INVESTIGATION FOUND A CRACK IN THE TAIL BOOM AT THE 11:00 POSITION, APPROX 1.5 INCHES LONG AT THE ROW OF RISep 14, 2011 · N377RS · Bell 407 · Rotorcraft Tail BoomSDR CA110916008Bearing · delaminated(CAN) THE ENGINEER WAS TROUBLESHOOTING A MAIN ROTOR VIBRATION WHEN IT WAS DISCOVERED VISUALLY, A DELAMINATION OF THE RUBBER COMPOUND OF THE SHEAR BEARING, S/N LK14771, TO SPINDLE.Sep 13, 2011 · Bell 407 · Main Rotor HeadSDR CA110901004Fuel Control · leaking(CAN) FUEL LEAK FROM HMU METERING HEAD REGULATOR COVER BOLTS. THERE IS A CEB 73-6054 OUT FOR A ONE TIME TORQUE CHECK ON THE BOLTS THIS CEB WAS CARRIED OUT AT OVERHAUL.Aug 30, 2011 · Fuel Control/Turbine EnginesSDR HEEA132169Bearing · spalledENGINE WAS REMOVED DUE TO N2 LOCKUP. NR 5 BEARING REVEALED SPALLING IN SEAM OF OUTER RACE. REPLACED NR 5 BEARING.Aug 28, 2011 · N741PH · Bell 407 · Turbine SectionSDR ALGAR8511MP087924Bearing · deterioratedENGINE MAKING METAL. UPON INSP OF TURBINE, NR 5 BEARING, IT WAS DETERMINED NR 5 BEARING WAS CAUSE OF METAL DUE TO DETERIORATION OF BALL BEARINGS. IN CAGE.Aug 5, 2011 · N405AL · Bell 407 · Turbine SectionSDR 2011FA0000542Longeron · crackedWHEN COMPLYING WITH ASB 407-11-95 INSP OF UPPER LT LONGERON CHANNEL FOUND LONGERON CRACKED THROUGH.Aug 5, 2011 · N407MH · Bell 407 · Fuselage Main, Longeron/StringerSDR CA111222012Bearing · failed(CAN) ENGINE CHIP LIGHT ILLUMINATED UPON SHORT FINAL FOR LANDING. CHIP PLUGS EXAMINED AND FOUND CONTAMINATED. REPAIR STATION CONTRACTED TO INSPECT AND REPAIR AS REQUIRED. IT WAS SUBSEQUENTLY FOUND THAT THE BEARING SUPPORTING THE REAR OF THE PTO GEAR HAD 1 BAAug 3, 2011 · Bell 407 · Accessory GearboxesSDR CA110802010Support Angle · crackedWHILE A DAILY CHECK WAS BEING CARRIED OUT BY THE PILOT, HE NOTICED A CRACK DEVELOPING ON THE FWD PART OF THE UPPER LT SUPPORT ANGLE THAT SUPPORTS THE HORIZONTAL STABILIZER TO THE TAILBOOM. ACFT WAS GROUNDED.Jul 31, 2011 · Bell 407 · Rotorcraft Tail BoomSDR HEEA20110728001Bearing · spalledENGINE REMOVED DUE TO CRACKED EXHAUST. NR 5 BEARING EXHIBITED SPALLING OF OUTER RACE. SCRAPPED PART. REPLACED WITH NEW.Jul 28, 2011 · N410PH · Bell 407 · Turbine SectionSDR CA110713004Skid · looseAFTER LANDING, OUR PILOT PERFORMED A REGULAR POST-FLIGHT INSP AND DISCOVERED THAT THE TAIL SKID ASSY WAS LOOSE. THE ACFT WAS GROUNDED FOR INVESTIGATION AND UPON DISASSEMBLY FOUND THAT THE TAIL SKID HAD SHEARED OFF AT THE ATTACHMENT BOLT HOLE DRILLED IN THE TAJul 12, 2011 · Bell 407 · Auxiliary Gear (Tail Skid)SDR CA110725016Combustion Case · cracked3.5 " CRACK FOUND ON HORIZ WELD LINE OF OUTER COMBUSTION CASE BY AME DURING POST FLIGHT INSPECTION. COMBUSTION CASE AND INNER COMBUSTION LINER REPLACED PRIOR TO FUTHER FLIGHT. CAUSE UNKNOWN.Jul 11, 2011 · Bell 407 · Turbine Engine Combustion SectionSDR CA110713006Bearing · failedPILOT AND AME WORKING NEAR ACFT REPORTED UNUSUAL NOISE ON SHUTDOWN, PROBLEM FOUND WITH NR 2 BEARING.Jul 1, 2011 · Bell 407 · Engine (Turbine/Turboprop)SDR CA110706007Longeron · crackedTHE AFT FUSELAGE TOP SKIN WAS FOUND CRACKED. AFTER FURTHER INSPECTION, THE UPPER LT LONGERON WAS FOUND WITH A 2.5" CRACK. THE ISSUE OF AN ALERT SERVICE BULLETIN RELATED TO THIS ISSUE IS WAITING APPROVAL.Jun 24, 2011 · Bell 407 · Fuselage Main, Longeron/StringerSDR CA110615010Bracket · broken(CFFCH ) WHILE IN A DESCENT JUST PRIOR TO TURNING FINAL FOR LANDING, THE CARGO MIRROR BRACKET BROKE AND THE MIRROR DEPARTED THE ACFT. ACFT WAS INSPECTED AFTER THE INCIDENT AND NO FURTHER DAMAGE WAS FOUND.Jun 10, 2011 · Bell 407 · Fuselage, Equipment Attach FittingsSDR HEEA20110602001Bearing · spalledENGINE WAS REMOVED DUE TO METAL IN OIL. NR 5 BEARING INSP REVEALED SPALLING OF OUTER RACE. REPLACED NR 5 BEARING.Jun 2, 2011 · N412PH · Bell 407 · Turbine SectionSDR CA110531011Scroll · cracked2 INCH CRACK FOUND DURING SCHEDULED MX INSPECTION. SOME CASE MATERIAL FOUND MISSING. RECORDS INDICATE SCROLL PREVIOUSLY REPAIRED FOR A CRACK IN 2004. SCROLL TO BE FWD FOR REPAIR.May 31, 2011 · Bell 407 · Turbine Engine Compressor SectionSDR CA110530008Elastomer · delaminatedWHILE DOING A DAILY CHECK OF THE MAIN ROTOR HEAD ASSY IT WAS NOTICED THAT THERE WAS A DELAMINATION OF THE ELASTOMERIC BEARING TO THE SPINDLE. WE ARE PRESENTLY REMOVING THE ELASTOMERIC BEARING.May 25, 2011 · Bell 407 · Main Rotor HeadSDR CA110525012Blade · crackedWHILE DOING A DAILY CHECK/INSP OF THE M/R BLADES, 4 CRACKS WERE FOUND DEVELOPING ON THE L/E ABRATION STRIP. M/M STATES 2 CRACKS ARE ALLOWED. MFG IS AWARE OF THE CRACKING.May 21, 2011 · Bell 407 · Main Rotor BladesSDR CA110525011Blade · crackedWHILE DOING AN DAILY CHECK/INSP OF THE M/R BLADES THE ENGINEER FOUND 7 CRACKS DEVELOPING ON THE L/E ABRASION STRIP.May 20, 2011 · Bell 407 · Main Rotor BladesSDR CA110429006Blades · crackedWHILE DOING AN INSP OF THE MAIN ROTOR BLADES, IT WAS FOUND THE CRACKS 4 PER BLADE WERE DEVELOPING ON THE L/E ABRASION STRIP. THIS OCCURED ON ALL 4 M/R BLADES THE REST OF THE PN 407015001137, SN BLADES ARE A-4093, A-4122.Apr 29, 2011 · Bell 407 · Main Rotor BladesSDR CA110421009Combustion Case · cracked(CAN) FOUND DURING AN INSPECTION. FOUND THE COMBUSTION CASE CRACKED. LAST POWER CHECK WAS IN THE POSITIVE OR GOOD.Apr 21, 2011 · Bell 407 · Turbine Engine Combustion SectionSDR HEEA130954Bearing · spalledENGINE WAS REMOVED DUE TO CYCLED WHEELS. NR 5 BEARING EXHIBITED SPALLING OF OUTER RACE AT SPLIT. REPLACED NR5 BEARING.Apr 1, 2011 · N426PH · Bell 407 · Turbine SectionSDR HEEA130604Bearing · spalledENGINE REMOVED FOR TURBINE O/H AND 2000 HR INSP. NR 5 BEARING EXHIBITED SPALLING IN OUTER RACE SPLIT. INSTALLED NEW BEARING.Mar 26, 2011 · N427PH · Bell 407 · Turbine SectionSDR QMLA2011032211037Exciter · detachedDURING THE PREFLIGHT PHASE THE PILOT NOTICED THE IGNITION EXCITER BOX WAS NOT ATTACHED FIRMLY TO THE ACCESSORY GEAR BOX.Mar 22, 2011 · N407UH · Bell 407 · ExciterSDR 2011FA0000180Control Cable · severedAFTER LANDING DURING EMS MISSION, PILOT REPORTED ACFT WAS UNABLE TO SHUTDOWN WITH TWIST GRIP ON COLLECTIVE. MX ARRIVED, CONFIRMED LINKAGES CONNECTED CORRECTLY TO BOTH ENDS-AFTER REMOVAL, FLAT WIRE THAT MOVES INSIDE THE HSG WAS FOUND SEVERED ABOUT 4 FT AFT FROMar 17, 2011 · N407CH · Bell 407 · Power LeverSDR QMLA2011031711034Support · crackedTHE MECHANIC FOUND A CRACK WHILE PERFORMING AN AIRWORTHINESS INSP ON THE LT UPPER TAILBOOM TO HORIZ STABILIZER SUPPORT IN THE BEND RADIUS INTENDING TO OTBD EDGE FWD OF THE FIRST SCREW. NO HIDDEN DAMAGE WAS FOUND ON THE TAILBOOM UPON REMOVAL OF THE SUPPORT. TMar 17, 2011 · N911KX · Bell 407 · Rotorcraft Tail BoomSDR HEEA130599Bearing · spalledENGINE WAS REMOVED DUE TO CYCLED WHEELS. NR 5 BEARING EXHIBITED SPALLING AT OUTER RACE SPLIT. INSTALLED NEW BEARING.Mar 15, 2011 · N402PH · Bell 407 · Turbine SectionSDR HEEA130600Bearing · spalledENGINE REMOVED FOR HIGH CYCLED WHEELS. NR 5 BEARING EXHIBITED SPALLING AT OUTER RACE SPLIT. INSTALLED NEW BEARING.Mar 15, 2011 · N410PH · Bell 407 · Turbine SectionSDR QMLA2011030111031Unknown · odorUPON TAKEOFF, PILOT AND FLIGHT NURSE DETECTED PRESENCE OF FUMES IN THE ACFT. ABORTED TAKEOFF AND SPENT A FEW MOMENTS TRYING TO ASCERTAIN THE SOURCE. THE UNPLEASANT ODOR HAD DISAPPATED AND A SOURCE COULD NOT BE FOUND. RECALLED THAT THE DAY PILOT MENTIONED THMar 1, 2011 · N404LL · Bell 407 · Heating SystemSDR QMLA2011021811026Blower Motor · bindingAIRCRAFT WAS IN ROUTE TO A HOSPITAL. WITHIN 10 MINUTES OF FLIGHT, SMOKE WAS COMING OUT OF THE FWD AIR CONDITIONER VENT. PIC EXECUTED A PRECAUTIONARY LANDING WITHOUT ANY PROBLEMS. FOUND THAT THE FWD RT AIR CONDITIONER BLOWER MOTOR PN ES61060-2 HAD FAILED, CAFeb 18, 2011 · N408GA · Bell 407 · Air Distribution Fan
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