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 2005FA0000134Cone · wornREPLACED MAIN ROTOR MAST CONE PN 407-010-104-109 FOR HUB SHIFT/MAST NUT TORQUE STABILIZATION PROBLEM. ORDERED NEW CONE P/N 407-010-104-109 FROM MFG. NEW PART WAS RECEIVED WITH A WEAR GROOVE IN CENTER OF CONE FACE (APPEARED USED). REORDERED ANOTHER NEW CONE Feb 16, 2005 · N17SP · Bell 407 · Main Rotor Mast/SwashplateSDR 2005FA0000224Bolt · misinstalledFOUND THAT MAX POS OF THROT (POWER LEVER ANGLE) COULD NOT BE OBTAINED USING NML ADJ PROC. FOUND COPILOT THROTTLE LINKAGE WAS FOULING ON COLLECT ELBOW (PN 206-001-203-101). LINKAGE IS ATTACHED TO COL THROTTLE LEVER WITH (NAS6603-9D) BOLT INSTALLED W/HEAD FACFeb 15, 2005 · N45RX · Bell 407 · Rotorcraft Flight ControlSDR ALG2005F00005Manifold · damagedAFTER LANDING AT SS69 PASSENGER INFORMED THE PILOT THERE WAS OIL ALL ALONG THE SIDE OF THE AIRCRAFT. SHUTDOWN AND CHECKED THE TRANSMISSION OIL LEVEL AND THE SIGHT GLASS WAS EMPTY. MAINTENANCE REMOVED AND REPLACED THE MAIN TRANSMISSION EXTERNAL OIL FILTER MANNov 29, 2004 · N587AL · Bell 407 · Main Rotor GearboxSDR ALG2005F00007Pressure Switch · inoperativeDURING BEFORE TAKEOFF CHECK, THE TRANSMISSION OIL PRESSURE LIGHT CAME ON, BUT THE GAUGE WAS READING AT A NORMAL LEVEL. LANDED AND CALLED MAINTENANCE, SHUTDOWN AND CHECK THE MEL BOOK AND THE CONNECTOR PLUGS. MAINTENANCE FLYING PART OUT. MAINTENANCE REMOVED TNov 29, 2004 · N457AL · Bell 407 · Rotor Drive Indicating SystemSDR CA041104010Blade · cracked(CAN) M/R BLADE FOUND WITH CHORDWISE CRACK AT STA 90.0 DURING ROUTINE 100 HOUR INSPECTION.PILOT THOUGHT HE FELT A SLIGHT CHANGE IN AIRCRAFT VIBRATION LEVELS DURING FLIGHT TO MAINTENANCE FACILITY. THE CRACKEXTENDED 4 INCHES FROM THE TRAILING EDGE OFTHE BLADE SOct 25, 2004 · Doug 600N · Main Rotor BladesSDR CA041210001Stud · cracked(CAN) ALL EIGHT STUDS (STATIC STOPS) FOUND CRACKED ON INSPECTION. MAINTENANCE CREWS REPORT LOWER STUDS ARE ALWAYS FOUND TO BE CRACKED ANY TIME THEY ARE INSPECTED. PROBLEM IS COMMON THROUGHOUT FLEET OF SEVEN BELL 407 HELICOPTERS.Oct 25, 2004 · Bell 407 · Main Rotor HeadSDR ALG2004F00057Connector · dirtyON TAKE OFF, RT FUEL TRANSFER LIGHT ILLUMINATED DURING TAKE OFF. MAINTENANCE FOUND MOISTURE ON TRANSFER PUMP CONNECTOR, CLEANED AND REINSTALLED, THE OPS CHECK WAS GOOD.Oct 7, 2004 · N437AL · Bell 407 · Electrical ConnectorsSDR ALGA097744Disc Pack · crackedCRACKED LAMINATE/REPLACED WITH NEW.Oct 1, 2004 · N647AL · Bell 407 · Tail Rotor Drive ShaftSDR 2005FA0000316Skid · fracturedDURING PRE-FLIGHT INSPECTION, FOUND TAIL SKID LOOSE IN VERTICAL FIN. UPON CLOSER EXAMINATION, TAIL SKID PULLED OUT FROM FIN ASSEMBLY. THE TAIL SKID HAD CRACKED COMPLETELY AROUND AND THROUGH AT THE ATTACHMENT BOLT HOLE. BY APPEARANCE OF THE BROKEN ENDS OF THSep 27, 2004 · N407MH · Bell 407 · Nose/Tail Landing GearSDR ALG2004F00064Shoulder Belt · odorAFTER DEPARTING LFT WITH MMS DIRECT TO SM58 PASSENGER IN BACK RT SEAT FORWARD FACING COMPLAINED OF (STRONG FUEL ODOR) TO THE POINT OF ASKING FOR AIR SICK BAG. DIVERTED AIRCRAFT FOR MAINTENANCE. MAINTENANCE INSPECTED ENGINE COMPARTMENT AT 100 PERCENT, NO LEAKSep 8, 2004 · N537AL · Bell 407 · Emergency EquipmentSDR YTRR097021Fuel Control · malfunctionedENGINE WOULD NOT ACCELERATE ABOVE IDLE. REPLACEMENT OF THE FUEL CONTROL UNIT ALEVIATED THE PROBLEM. THE FUEL CONTROL WAS OVERHAULED.Aug 25, 2004 · N65DD · Bell 206B · Fuel Controlling SystemSDR YTRR096991Hydromech Unit · malfunctionedAIRCRAFT REPORTED A PLA HARD FAULT THAT WAS TRACED DOWN TO THE HMU. HMU SENT TO ROLLS ROYCE FOR INSPECTION.Aug 24, 2004 · N594RL · Bell 407 · Fuel Controlling SystemSDR CA040831002Wire Harness · failed(CAN) PRIOR TO FINAL APPROACH, FADEC FAIL WARNING HORN AND LIGHTS ACTIVATED. ENGINE AUTOMATICALLY REVERTED TO MANUAL MODE. PILOT SELECTED AUTO/MANUAL SWITCH TO SILENCE WARNING HORN, RETARDED THROTTLE TO PREVENT NP OVERSPEED. CONTINUED APPROACH, LANDING IN MANUAug 24, 2004 · Bell 407 · Engine Fuel System WiringSDR ALG2004F00046Wire · shortedON TAKE OFF. WHILE TAKING OFF THE MAIN TRANSMISSION CHIP LIGHT CAME ON, RETURNED TO GI 59 AND LANDED. MAINTENANCE CHECKED CHIP DETECTOR SYSTEM FOUND NO MENTAL, DID FIND UPPER CHIP DETECTOR HAD BROKEN WIRES SHORTING OUT, REPAIRED BROKEN WIRES TESTED GOOD.Aug 20, 2004 · N937AL · Bell 407 · Main Rotor Drive System WiringSDR ALGA096983Bearing · defectiveTEFLON FABRIC SHOWING THROUGH. REPLACED WITH NEW PART.Aug 12, 2004 · N265AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR ALGA096984Bushing · wornTEFLON FABRIC SHOWING THROUGH, EXCESSIVE PLAY BETWEEN LINK AND COLLECTIVE LEVER. REPLACED WITH NEW PART.Aug 12, 2004 · N265AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR ALGA096985Bearing · defectiveTEFLON FABRIC SHOWING THROUGH. REPLACED WITH NEW PART.Aug 12, 2004 · N265AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR ALGA096986Bushing · defectiveTEFLON FABRIC SHOWING THROUGH. REPLACED WITH NEW PART.Aug 12, 2004 · N265AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR ALGA096987Bearing · defectiveTEFLON FABRIC SHOWING THROUGH. REPLACED WITH NEW PART.Aug 12, 2004 · N265AL · Bell 206L4 · Main Rotor Mast/SwashplateSDR ALGA096917Link · crackedFOUND P/C LINK BEARING BINDING; RATCHETY AND HAS AXIAL WEAR. REPLACED WITH NEW PART IN FIELD.Aug 10, 2004 · N617AL · Bell 407 · Main Rotor ControlSDR ALGA096827Bushing · wornFOUND RADIAL PLAY IN EXCESS OF LIMITS. REPLACED WITH NEW, BY O/H SHOP.Aug 7, 2004 · N647AL · Bell 407 · Main Rotor ControlSDR ALGA096801Bearing · bindingBINDING, AXIAL WEAR BEYOUND MAX, AND ROUGH. REPLACED WITH NEW PART IN FIELD.Jul 24, 2004 · N437AL · Bell 407 · Main Rotor BladesSDR ALGA096400Gear · spalledFOUND SPALLED GEAR TEETH ON GEAR. REPLACED W/NEW PART.Jul 20, 2004 · N417AL · Bell 407 · Main Rotor GearboxSDR ALGA096401Gear · spalledFOUND SPALLED GEAR TEETH ON GEAR. REPLACED W/NEW PART.Jul 20, 2004 · N417AL · Bell 407 · Accessory GearboxesSDR ALGA096399Disc Pack · wornFOUND EXCESSIVE PLAY AND RATCHETY. REPLACED W/NEW BY FIELD MAINT.Jul 20, 2004 · N937AL · Bell 407 · Main Rotor Drive SystemSDR ALGA096800Bearing · bindingBINDING, AXIAL WEAR BEYOND MAX., AND ROUGH. REPLACED WITH NEW PART IN FIELD.Jul 20, 2004 · N697AL · Bell 407 · Main Rotor BladesSDR CA040726001Hydromech Unit · inoperative(CAN) DURING ADVANCING THROTTLE TO 100 PERCENT FOR TAKEOFF, N2 DECREASED.Jul 19, 2004 · Bell 407 · Fuel Controlling SystemSDR ALGA096465Disc Pack · crackedFOUND CRACKED DISC. REPLACED W/NEW PART BY FIELD MAINT.Jul 18, 2004 · N587AL · Bell 407 · Tail Rotor Drive ShaftSDR CA040726002Transmission · making metal(CAN) TRANSMISSION CHIP LIGHT, TRANSMISSION SENT TO OVERHAUL SHOP.Jul 6, 2004 · Bell 407 · Main Rotor GearboxSDR ALGA096933Gear · spalledREMOVED GEAR DUE TO SPALLING AT LOW TIME, REPLACED PART WITH NEW ITEM.Jun 27, 2004 · N617AL · Bell 407 · Main Rotor GearboxSDR ALGA096938Gear · defectiveREMOVED GEAR DUE TO UNEVEN WEAR PATTERN, REPLACED PART WITH NEW ITEM.Jun 27, 2004 · N617AL · Bell 407 · Main Rotor GearboxSDR ALGA096951Pinion Gear · spalledSPALLING ON GEAR TEETH, THIS IS A RECURRING PROBLEM IN C47B GEARBOXS, WHERE PINION GEARS WEAR PREMATURELY. REPLACED WITH NEW GEAR.Jun 26, 2004 · N617AL · Bell 407 · Main Rotor GearboxSDR ALG2004F00044Transmitter · malfunctionedON SECOND TAKE OFF OF THE DAY, ON TAKE OFF FROM LOOP OPS GALLIANO, TORQUE GAUGE READ ERRATIC AND EXCEEDED LIMITS. LANDED AND REFERRED TO MAINTENANCE. MAINTENANCE REMOVED AND REPLACED THE TORQUE TRANSMITTER, OPS CHECK WAS GOOD.Jun 25, 2004 · N557AL · Bell 407 · Rotor Drive Indicating SystemSDR ALGA095231Gear · spalledSPALLING ON GEAR TEETH, THIS IS A RECURRING EVENT ON C-47 GEARBOXES. REPLACED GEAR W/NEW PART.Jun 10, 2004 · N487AL · Bell 407 · Main Rotor GearboxSDR ALGA095232Gear · spalledSPALLING ON GEAR TEETH. THIS IS A NEW STYLE GEAR AND THIS GEARBOX WAS REMOVED FOR HIGH VIBES. THIS IS A RECURRING EVENT ON C-47 GEARBOXES. REPLACED GEAR W/NEW PART.Jun 10, 2004 · N487AL · Bell 407 · Main Rotor GearboxSDR CA040604004Bearing · rough(CAN) STARTER-GEN, UNDERGOING IMPORT INSPECTION. BEARINGS WERE FOUND TO BE ROUGH AND NOISY WHEN SPUN. REMOVED BEARINGS, FOUND THEM TO BE SUP. ARE MARKED PW203PP C7 FS50000. IAW DATAPLATE, THEY SHOULD BE P/N 03-6009-23 (MOD B). THE SOURCE OF THE LAST OVERHJun 2, 2004 · Bell 407 · Starter-GeneratorSDR ALG2004F00028Mount · wornDURING TIME CHANGE OF ENGINE ASSEMBLY. REAR ENGINE MOUNT BEARING ON THE SUPPORT HAS EXCESSIVE WEAR, ALSO THE BEARING HOUSING HAS EXCESSIVE PLAY WHICH IS BEYOND LIMITS.May 13, 2004 · N527AL · Bell 407 · Engine Mount SectionSDR ALGA094419Cover · defectiveGEARBOX COVER REMOVED DUE TO IMPROPER REPAIRS AT TACH/GEN BORE. SENT PART TO VENDOR FOR WARRANTY REPAIR.May 7, 2004 · N5NBEM · Bell 407 · Accessory GearboxesSDR CA040816004Combustion Liner · cracked(CAN) CRACK FOUND DURING REMOVAL FOR UNRELATED SCHEDULED MAINTENANCE.Apr 27, 2004 · Bell 407 · Turbine Engine Combustion SectionSDR ALGA094233Skid · brokenTHE TAIL SKID BROKE AT RETAINING HOLE AND A PORTION OF SKID DEPARTED AIRCRAFT. FATIGUE CRACK APPEARS TO HAVE STARTED AT RETAINING HOLES AND PROGRESSED AROUND BETWEEN 2.25.Apr 22, 2004 · N617AL · Bell 407 · Brake Anti-Skid SectionSDR ALGA094222Universal · wornFOUND EXCESSIVE AXIAL PLAY. REMOVED AND REPLACED WITH NEW PART IN FIELD.Apr 21, 2004 · N697AL · Bell 407 · Main Rotor HeadSDR ALG2004F00020Hmu · unserviceableFUEL FUMES WERE NOTED IN THE AFT RT PORTION OF THE PASSENGER COMPARTMENT. NOTED TO BE STRONG, SO DIVERTED TO HAVE IT CHECKED. MAINTENANCE REMOVED HAD BIN AND FUEL VALVE ACCESS PANEL. WITH BATTERY POWER ON, BOOST PUMPS RUNNING AND FUEL VALVE OPEN NOTED HEAVYApr 20, 2004 · N537AL · Bell 407 · Fuel Controlling SystemSDR ALGA094181Gear · spalledGEAR HAS HEAVY SPALLING. REMOVED AND REPLACED W/SERVICEABLE PART.Apr 15, 2004 · N537AL · Bell 407 · Main Rotor GearboxSDR ALGA094182Gear · spalledGEAR HAS HEAVY SPALLING. REMOVED AND REPLACED W/SERVICEABLE PART.Apr 15, 2004 · N537AL · Bell 407 · Main Rotor GearboxSDR ALGA094108Bearing · defectiveHBMV FAULT LIGHT NR 2 BEARING (AFT) REMOVED AND REPLACED WITH NEW PART.Apr 12, 2004 · N547AL · Bell 407 · Tail Rotor Drive ShaftSDR CA040816007Combustion Liner · cracked(CAN) CRACK FOUND IN COMBUSTION LINER WHEN REMOVED FOR TURBINE INSPECTION. NO CRACKS ALLOWED IN THIS AREA.Apr 6, 2004 · Bell 407 · Turbine Engine Combustion SectionSDR BAQA094018Fuel Nozzle · intermittentREASON FOR REMOVAL STATES ENG HANG STARTS INTER. MEANS INTERMITTENT HUNG STARTS. I HAVE ENCLOSED A COPY OF THE ENGINE ASSY CARD. SO IT SHOWS YOU THAT THE REMOVED NOZZLE WAS INSTALLED 1/12/04 ENGINE TSN 8.1 REMOVED 3/24/04 ENGINE TSN 97. WHICH IT ONLY LASTEDApr 1, 2004 · N302LE · Bell 407 · Fuel Injector NozzleSDR CA040413006Blade · contaminated(CAN) ONE TAILROTOR BLADE FOUND TO HAVE ABSORBED WATER, THROWING THE TAIL ROTOR OUT OF BALANCE AND CREATING EXCESSIVE VIBRATIONS.Mar 25, 2004 · Bell 407 · Tail Rotor BladesSDR CA040331001Doubler · delaminated(CAN) HORIZONTAL STAB. WAS FOUND WITH AN EDGE DELAMINATION BETWEEN THE STAB TOP SKIN AND THE -123 DOUBLER AT 1.85.Mar 23, 2004 · Bell 407 · Horizontal Stabilizer StructureSDR ALGA093891Bearing · damagedFOUND GREASE DISCOLORATION ON NR 2 BEARING HBVM LIGHT.Mar 22, 2004 · N547AL · Bell 407 · Tail Rotor Drive Shaft
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