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 ZESA2010002Combustion Liner · crackedON 08/28/2009, TURBINE ASSY PN 23063354 SN CAT-44643 WAS REMOVED FOR O/H AND LIFE LIMIT ON THE WHEELS AND A LOANER WAS INSTALLED WITH A REPAIRED COMBUSTION LINER. ON FEB 25, 2010 UPON INSTALLATION OF THE ORIGINAL O/H TURBINE ASSY, IT WAS FOUND THAT THE REPAIRFeb 25, 2010 · N70AP · Bell 407 · Turbine Engine Combustion SectionSDR ALGA2191045003Mount · crackedFOUND EXCESSIVE CRACKING ON AFT FLANGE OF REAR COMPRESSOR MOUNT.Feb 19, 2010 · N415AL · Bell 407 · Turbine Engine Compressor SectionSDR 2010FA0000171Support · damagedON 1/17/2010, THE PILOT, FLIGHT CREW, AND BASE MECHANIC REPORTED AN UNUSUAL NOISE COMING FROM THE ACFT/ENG. AFTER FLIGHT CKS, GROUND RUNS, AND TROUBLESHOOTIING OF THE ENG AND COMPONENTS, A DECISION WAS MADE TO REMOVE THE ENG FOR INSP AND REPAIR. ON 1/2/2010,Feb 10, 2010 · N40RX · Bell 407 · Engine Mount SectionSDR CA100209011Retaining Ring · cracked(CAN) ENG PRODUCED A CHIP LIGHT DURING OPERATION AND METALLIC DEBRIS OF SIGNIFICANT SIZE WAS FOUND ON THE LOWER GEARBOX CHIP PLUG DURING LINE MX INVESTIGATION. ENG WAS SUBSEQUENTLY REMOVED FROM SERVICE. ON DISMANTLE TO INVESTIGATE CONDITION OF THE FOLLOWING Feb 8, 2010 · Bell 407 · Turbine Engine Compressor SectionSDR 2010FA0000134Tank · leakingDURING MX TEST FLIGHT AFTER ENGINE INSTALLATION AN EXCEEDANCE OF 150 PSI ENGINE OIL PRESSURE OCCURS FOLLOWED BY A LOSS OF OIL PRESSURE. AN EMERGENCY LANDING PERFORMED FOLLOWED BY ENGINE SHUTDOWN.Jan 25, 2010 · N311DJ · Bell 407 · Turbine Engine Oil SystemSDR HEEA127166Garlock Seal · unsecureLANDED ACFT ON PLATFORM AND PASSENGER NOTICED OIL LEAK. TRANSMISSION LOW PRESSURE CAUTION LIGHT ILLUMINATED DURING ROUTINE 2 MINUTE ENG COOL DOWN. PILOT IMMEDIATELY SHUTDOWN ENGINE. PILOT REPORTS OIL ON ENG DECK. TRANSMISSION LOST OIL PRESSURE DURING COOL Jan 10, 2010 · N447PH · Bell 407 · Main Rotor GearboxSDR ALGA0100410847285Mount · crackedFOUND 3 EA CRACKS ON FWD FLANGE. CRACKS GO THROUGH BOLT HOLES AND AROUND BOLT HOLES.Jan 4, 2010 · Bell 407 · Turbine Engine Compressor SectionSDR ALGA010410847257Mount · crackedFOUND 2 EA CRACKS THROUGH BOLT HOLES ON FWD FLANGE OF ENGINE COMPRESSOR MOUNT.Jan 4, 2010 · N406AL · Bell 407 · Turbine Engine Compressor SectionSDR CA091210001Spring · fractured(CAN) FOUND DURING S CHECK (ONE SPRING FRACTURE SEEN THROUGH FRAHM SIDE HOLES, SECOND FOUND AFTER SPRING REMOVAL FROM FRAHM).Dec 9, 2009 · Bell 407 · Main Rotor HeadSDR CA091210002Spring · fractured(CAN) FOUND AS CLOSER INSP WAS DONE ON FRAHM UNIT AFTER BROKEN SPRING FINDINGS ON OTHER COMPANY ACFT.Dec 9, 2009 · Bell 407 · Main Rotor HeadSDR CA091207006Latch · worn(CAN) INTAKE COWL LT INSP DOOR LATCH PN 90-015-032-235 HEAVILY WORN AT STRIKER WITH FWD FIREWALL. FWD FIREWALL PN UNK ALSO EXIBITS WEAR.Dec 3, 2009 · Bell 407 · Powerplant SystemSDR CA091203001Friction Ring · damaged(CAN) DURING ANNUAL INSPECTION/UNSCHEDULED ENGINE CHANGE, STARTER/GENERATOR WAS REMOVED & INSPECTED BEFORE TRANSFER TO REPLACEMENT ENGINE. AME NOTICED FRICTION RING SPLIT & PROTRUDING FROM SHAFT PLATE. STARTER GENERATOR SENT TO LOCAL REPAIR FACILITY FOR REPADec 1, 2009 · Bell 407 · Starter-GeneratorSDR ALGA111309847230Fireshield · mismanufacturedCOULD NOT FIT VERTICAL FIRESHIELD ON ENG GEARBOX. ALL FIRESHIELD MOUNT PADS WELDED OFF CENTER.Nov 13, 2009 · N627AL · Bell 407 · Engine (Turbine/Turboprop)SDR ALGA111309947521Fireshield · mismanufacturedCOULD NOT FIT VERTICAL FIRESHIELD ON ENG GEARBOX. ALL FIRESHIELD MOUNT PADS WELDED OFF CENTER.Nov 12, 2009 · N447AL · Bell 407 · Engine (Turbine/Turboprop)SDR CA091113004Seal · leaking(CAN)  DURING A NIGHT FLIGHT, PILOT NOTICED DECREASE IN TRANSMISSION OIL PRESSURE. ON LANDING (STILL HAD SOME PRESSURE INDICATION) FOUND OIL ALL OVER THE ENG COMPARTMENT AND THAT THE AFT FREEWHEEL ADAPTER SEAL PN: 209-340-265-103 HAD COME OUT OF THE AFT ADAPTEOct 25, 2009 · Bell 407 · Engine/Transmission CouplingSDR 2009FA0000892Bearing · separatedACFT ARRIVED AT HANGAR. PILOT NOTE: THE MAIN ROTOR HAD A VIBRATION. MX INSP MAIN ROTOR AND FOUND SHEAR BEARING HAD BECOME SEPARATED FROM SPINDLE THAT IT WAS BONDED TO. (K)Oct 23, 2009 · N175P · Bell 407 · Main Rotor HeadSDR CA090928004Spring · broken(CAN) DURING INSPECTION FOUND SPRING BROKEN. (TC# 20090928004)Sep 14, 2009 · Bell 407 · Main Rotor ControlSDR ALGA9110944443Fireshield · misalignedALL MOUNT PADS ON FIRESHIELD HAD RAISED SHEETMETAL FROM IMPROPER FIT.Sep 11, 2009 · N607AL · Bell 407 · Engine (Turbine/Turboprop)SDR CA090914011Oil Tank · cracked(CAN) OIL WAS FOUND IN THE ENGINE OIL COOLER REGION. THERE WAS A LOSS OF ENGINE OIL. THE OIL WAS ORIGINATING FROM A CRACK OF THE ENGINE OIL TANK P/N 206061505115. THE CRACK WAS LOCATED NEAR THE RIGHT FRONT SUPPORT LEG. (TC# 20090914011)Sep 5, 2009 · Bell 407 · Turbine Engine Oil SystemSDR ALGA145920944377Fireshield · misalignedUNABLE TO FIT SHIELD TO GEARBOX, 6 PADS OFF CENTER TO FIRESHIELD.Sep 2, 2009 · N617AL · Bell 407 · Engine (Turbine/Turboprop)SDR ALGA1458240994714Cover · improper partHMU PAD STUDS TOO SHORT UPON ENGINE BUILD.Aug 24, 2009 · N405AL · Bell 407 · Turbine Engine Reduction GearSDR ULXR2009080683133Hmu · failedFAILED FADEC AUTO TO MANUAL CHECK.Aug 6, 2009 · N702WP · Bell 407 · Fuel Control/Turbine EnginesSDR CA090716007Blade · delaminated(CAN) HELICOPTER M/R VIBRATIONS INCREASED RAPIDLY OVER A FEW DAYS. M/R WAS TRACKED AND BALANCED TO WITHIN LIMITS. WITHIN 2 DAYS, VIBRATIONS LEVELS HAD INCREASED BEYOND LIMITS AGAIN. FURTHER INSP REVEALED BLADE DELAMINATION SUSPECTED TO BE ABOVE LIMITS ON THEJul 10, 2009 · Bell 407 · Main Rotor BladesSDR CA090716008Blade · delaminated(CAN) HELICOPTER M/R VIBRATIONS INCREASED RAPIDLY OVER A FEW DAYS. M/R WAS TRACKED AND BALANCED TO WITHIN LIMITS. WITHIN 2 DAYS, VIBRATIONS LEVELS HAD INCREASED BEYOND LIMITS AGAIN. FURTHER INSP REVEALED BLADE DELAMINATION SUSPECTED TO BE ABOVE LIMITS ON THEJul 10, 2009 · Bell 407 · Main Rotor BladesSDR CA091002003Igniter Box · failed(CAN) ACFT WOULD NOT START. PILOT NOTED IGNITOR NOT FIRING. TROUBLESHOT TO FAULTY IGNITION EXCITOR BOX. REPLACED WITH SERVICEABLE UNIT.Jun 19, 2009 · Bell 407 · Ignition Power SupplySDR ALGA061409437ALLongeron · crackedDURING ROUTINE INSP, TAILBOOM RING (FUSELAGE SIDE), SHEAR DECK/ WEB, AND LONGERON FOUND CRACKED.Jun 14, 2009 · N437AL · Bell 407 · Fuselage Main, Longeron/StringerSDR 2009FA0000563Shaft · crackedTHE ENGINE WAS DISASSEMBLED TO FACILATE INSP BECAUSE OF METAL IN THE OIL. UPON VISUAL INSP, A CRACK WAS DISCOVERED ORGINATING AT THE CURVIC COUPLING END OF THE SHAFT. THE CRACK MEASURED APPROX 4.5 INCHES AND EXTENDED APPROX 270 DEGREES AROUND THE SHAFT.Jun 11, 2009 · Turbine SectionSDR 2009FA0000564Shaft · crackedTHE ENGINE WAS DISASSEMBLED BECAUSE OF A REPORTED VIBRATION. A CRACK WAS DISCOVERED THAT ORGINATED FROM THE CURVIC COUPLING END OF THE SHAFT, MEASURING APPROX 5.5 INCHES AND EXTENDING APPROX 300 DEGREES AROUND THE SHAFT. REPAIR STATIONW/O A105779. ENGINE TOTJun 11, 2009 · Turbine SectionSDR CA091002002Turbine · damaged(CAN) TURBINE RUB NOISE REPORTED ON SHUTDOWN. RECOMENDED REMOVING THE TURBINE AND SENDING OUT FOR INSP. TURBINE WAS REPAIRED FOR N1 RUB.Jun 10, 2009 · Bell 407 · Turbine SectionSDR CA090608007Sleeve · dislodged(CAN) WHILE GREASING THE T/R GEARBOX PITCH CHANGE ASSEMBLY IT WAS NOTED THAT THE BOOT P/N 406-312-106-101 WAS BEING PRESSURIZED BY THE GREASING. REMOVED THE T/R GEARBOX PITCH CHANGE ASSEMBLY AS PER BELL MM. THE ASSEMBLY WAS DISASSEMBLED. IT WAS FOUND THAT THE Jun 5, 2009 · Bell 407 · Tail Rotor HeadSDR CA090605004Support Angle · crackedWHILE CARRYING OUT A DAILY CHECK IT WAS NOTED THAT MAYBE A CRACK HAD DEVELOPED ON THE FWD ANGLE OF THE TAILBOOM/HORIZ UPPER LT ANGLE SUPPORT. FURTHER INVESTIGATION LEAD TO, IT IS CRACKED. ACFT GROUNDED FOR REPAIRS ADVISED MFG PRODUCT SUPPORT OF THE OCCURANCE.Jun 4, 2009 · Bell 407 · Rotorcraft Tail BoomSDR CA090505006Blade · separated(CAN) PILOT DURING HIS PREFLIGHT NOTICED SEPARATION IN THE TAIL ROTOR BLADE TIP WEIGHT AREA,Apr 30, 2009 · Bell 407 · Tail Rotor BladesSDR CA090401001Bearing · migrated(CAN) THE BEARING (406-310-403-101) MIGRATED OUT OF IT`S PARENT PART (406-010-432-101) ANTI-DRIVE LINK ASSY.Mar 26, 2009 · Bell 407 · Main Rotor Mast/SwashplateSDR CA090406005Drive Shaft · worn(CAN) ON DAILY VISUAL INSP OF ACFT, THE NR1 T/R DRIVE BEARING HANGER WAS FOUND TO BE OVERHEATED WITH SIGNS OF BLUE DISCOLORATION. THE ACFT WAS THEN REMOVED FROM SERVICE, ON INSP THE NR1 AND NR2 BEARINGS WERE FOUND TO BE OVERHEATED AND THE ROOT CAUSE WAS FOUND Mar 20, 2009 · Bell 407 · Tail Rotor Drive ShaftSDR CA090320003Control Cable · broken(CAN) PILOT LANDED AFTER DROPPING PASSENGERS ON SKI RUN. THROTTLE TWIST GRIP DID NOT RESPOND WHEN ROLLED TO IDLE SETTING PRIOR TO ENGINE SHUTDOWN. ACFT WAS FLOWN BACK TO BASE AND ENGINE SHUTDOWN AT HMU INPUT LEVER MANUALLY BY AME. THROTTLE CABLE FOUND BROKEN UMar 19, 2009 · Bell 407 · Power LeverSDR CA090506007Tube · failed(CAN) RECEIVED TAIL ROTOR GEARBOX FOR A 60 MONTH INSP WITH PITCH CHANGE MECHANISM ATTACHED. WHEN PITCH MECHANISM WAS REMOVED, NOTICED A RAISED SLIVER OF MATERIAL THE ENTIRE DIAMETER OF THE PITCH TUBE IN THE AREA OF THE BRG SLEEVE AND PITCH TUBE BRG SHOULDER. TMar 5, 2009 · Bell 407 · Tail Rotor Control SystemSDR CA090407007Hmu · leaking(CAN) EN-ROUTE, DURING THE LAST FUEL STOP, A FUEL LEAK WAS OBSERVED, LEAK WAS COMING FROM THE HMU.Feb 26, 2009 · Bell 407 · Fuel Controlling SystemSDR CA090205007Release Cable · frayedDURING INSPECTION CABLE TOP END OF MANUAL RELEASE CABLE WAS FOUND TO BE FRAYED AND PULLED OUT OF THE SWAGED END. SDR WAS SUMITTED DEC 09 2008 FOR A SIMILAR DEFECT BUT ON THE BOTTOM END OF CABLE, THAT CASE RESULTED IN A UN-COMMANDED RELEASE OF THE HOOK, BOTH CFeb 2, 2009 · Bell 407 · Cargo CompartmentsSDR CA090120005Support Angle · cracked(CAN) SUPPORT ANGLE P/N 407-023-800-127 FOUND CRACKED ON A DAILY INSP. PART HAS BEEN UPGRADED BY A -129 THAT WAS INSTALLED. THIS IS KNOWN TO MFG AND THEY HAVE COME OUT WITH THE -129 THAT IS THINNER MATERIAL AND HAS MORE FLEXABILITY.Jan 13, 2009 · Bell 407 · Rotorcraft Tail BoomSDR HEEA123017Hmu · malfunctionedAIRCRAFT YAWED LEFT SUDDENLY FOLLOWED IMMEDIATELY BY DECREASE IN ENGINE NOISE, LOSS IN ALTITUDE, ACTIVATION OF LOW RPM AUDIO AND FADEC FAIL AUDIO. CAUTION LIGHTS THAT ILLUMINATED WERE FADEC FAIL, FADEC DEGRADED, RESTART FAULT, AUTO RELIGHT AND RPM, FADEC MODEJan 5, 2009 · N401PH · Bell 407 · Fuel Controlling SystemSDR CA081028003Bevel Gear · damaged(CAN) TRANSMISSION CHIP LIGHT ILLUMINATED. MECHANIC FOUND SMALL DEBRIS ON THE LWR CHIP PLUG. UPON INSP BY THE OVERAUL SHOP, THEY DISCOVERED THE BEVEL GEAR DAMAGED. A SMALL PIECE OF GEAR TOOTH APPROX. .360X.073 HAD BROKEN OFF THE GEAR ASSY AND DISCOVERED THE BEOct 24, 2008 · Bell 407 · Main Rotor GearboxSDR CA080820002Release Mech · malfunctioned(CAN) HELI BASKET D407-663-011 INSTALLED IAW INSTRUCTIONS. DURING TRAINING (SLING OPERATION) MANUAL RELEASE WAS USED AND FUNCTIONED AS NORMAL DURING THE TRAINING SEQUENCE. ON THE NEXT PICK UP, THE LOAD WAS HOOKED UP ON THE HOOK AND THE PILOT PULLED INTO AN HOVAug 15, 2008 · Bell 407 · Aerial Tow EquipmentSDR CA080805003Skin · cracked(CAN) CRACK FOUND BETWEEN THE TAIL ROTOR SUPPORT AND TAILBOOM AT FUSELAGE STA 375 APPROX. ALSO SEVERAL RIVETS WERE FOUND SMOKING. THE HELICOPTER WAS USED TO MOVE DRILL ON A REGULAR BASIS WITHOUT EXCEEDING THE LOAD CAPACITY. TAILBOOM REMOVED P/N407-530-014-101 Aug 3, 2008 · Bell 407 · Rotorcraft Tail BoomSDR CA080910005Disc Pack · cracked(CAN) FOUND (3) DISCS CRACKED AND ALL DISCS CORRODED ON THE FWD NR 1 POSITION.Jul 9, 2008 · Bell 407 · Tail Rotor Drive ShaftSDR CA080707006Shaft · corroded(CAN) WHILE REMOVING THE TAIL ROTOR FROM THE ACFT, THE ENGINEER PERFORMING THE WORK NOTED THAT SEPARATING THE HUB FROM THE OUTPUT DRIVE SHAFT WAS SUBSTATIALLY MORE DIFFICULT THAN NORMAL. ONCE THE TAIL ROTOR WAS REMOVED IT WAS NOTED THAT THE INCORRECT TYPE OF LJun 16, 2008 · Bell 407 · Tail Rotor Drive ShaftSDR 2008FA0000441Bearing · failedPILOT REPORTED ENGINE CHIP LIGHT PRECAUTIONARY LANDING MADE TO INVESTIGATE. A CONSIDERABLE AMOUNT OF FERROUS MATERIAL WAS ON THE TOP AND BOTTOM CHIP DETECTORS. NO PENALTY RUNS WERE PERFORMED. AIRCRAFT WAS PLACED ONTO A TRAILER AND MOVED BACK TO BASE WHERE THEJun 4, 2008 · N3WV · Bell 407 · Turbine Engine Compressor SectionSDR 2008FA0000338Spring · damagedONE OF EIGHT SPRINGS BROKEN CAUSING DAMAGE TO LOWER HOUSING. LOWER HOUSING, SPRINGS 2 EA. AND PLUGS WERE REPLACED. UNKNOWN WHI SPRING BROKE, SPRING WAS FOUND BROKEN ON SCHEDULED 300 HOUR INSPECTION. (K)May 30, 2008 · N701WP · Bell 407 · Main Rotor SystemSDR 408UT051308Heater · fumesFUMES AND SMOKE IN THE COCKPIT, DURING FLIGHT, RESULTING IN A UNSCHEDULED LANDING.May 13, 2008 · N408UT · Bell 407 · Heating SystemSDR HEEA119671Engine · malfunctionedLOST ENGINE OIL PRESSURE, ENGINE TORQUE, AND THE ENGINE CHIP LIGHT ILLUMINATED.May 12, 2008 · N724PH · Bell 407 · Engine (Turbine/Turboprop)SDR CA080411006Turbine · damagedON THE THIRD MAIN ROTOR STROBING FLIGHT OF THE MORNING AND WHILE ACCELERATING FROM 100KTS TO 120KTS, A LOW HOWLING NOISE WAS HEARD WHICH INTENSIFIED RAPIDLY AND WAS FOLLOWED IMMEDIATELY BY AN ENGINE CHIP LIGHT. A FORCED LANDING WAS MADE TO A FIELD. AN EXTERNApr 9, 2008 · Bell 407 · Turbine Section
Back to Allison 250-C47B