JASC 2434
Service difficulty reports · 849
Reports filed under 2434 · DC Generator-Alternator, newest first.
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 jasc_code = '2434' 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.
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 jasc_code = '2434' ORDER BY difficulty_date DESC
Run it at the DuckDB prompt, or in any tool that reads Parquet over HTTPS. More ways to query the release are on Use the data.
SDR AUS20030802Alternator · faulty(AUS) ALTERNATOR FAILED. INVESTIGATION FOUND HIGH RESISTANCE IN BRUSH BLOCK AND GLAZED BRUSHES.SDR PCAA0308090Generator · lightning strike20 MINUTES PRIOR TO LANDING AT BDL A/C EXPERIENCED A LIGHTNING STRIKE. BOTH DC GEN WENT OFF LINE. ONE GEN WAS ABLE TO RESET. FLT CONTINUED TO BDL & LANDED WITHOUT FURTHER INCIDENCE. MAINT PERFORMED A LIGHTNING STRIKE INSPECTION IAW DEHAV DASH 8 MM, PWA MM, & HSDR MALA030367Generator · failedDURING FLIGHT NR 2984, LEFT DC GEN ILLUMINATED WOULD NOT RESET. QRH COMPLETED ALL ENGINE INDICATIONS NORMAL. AIR RETURN TO MEM. MAINTENANCE REMOVED AND REPLACED LT DC GEN PN 23080-031 SN/ON 97379 SN/OFF 3974 OPS CHECKS GOOD. IAW JC 243103.SDR VJ32003F00028Bracket · crackedDURING ROUTINE INSPECTION, FOUND THE ALTERNATOR MAOUNTING BRACKET CRACKED. SUSPECT VIBRATION CAUSED CRACK. RECOMMEND GUSSETS BE WELDED INTO RADIUS OF BRACKET OR CHANGE IN MATERIAL/MANUFACTURING PROCESS.SDR QXEA200300886Generator · malfunctionedGTF- ON FLIGHT 2323 NR 1 DC GENERATOR FAILED INFLIGHT. RESET PER CHECKLIST WITH NO FURTHER DEFECTS. REMOVED AND REPLACED DC STARTER GENERATOR. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.SDR QXEA200300874Warning System · activatedSEA-ON FLIGHT NUMBER 2333, AFTER TAKEOFF, NR 1 DC GENERATOR CAUTION LIGHT. PERFORMED CHECKLIST. LIGHT STAYED OUT. RESET NR 1 DC GENERATOR. PERFORMED OPERATIONAL CHECK AND VISUAL CHECK OF NR 1 DC GENERATOR. OPERATIONAL CHECK GOOD. NO PARTS REPLACED. AIRCRAFT RESDR 226072203Shaft · wornNR 2 GENERATOR DRIVE SHAFT WORN AND PITTED.SDR CA030717003Alternator · failed(CAN) PILOT REPORTED ELECTRICAL FAILURE DURING TAXI. INVESTIGATION FOUND ALTERNATOR HAD A LOOSE HOUSING. ALL LOCKING TABS WERE SECURE ON THRU BOLTS THAT HOLD THE FORWARD AND AFT CASE HALVES TOGETHER, YET THECASE WAS CLEARLY LOOSE AND THE TWO SECTIONS FRETTINGSDR HEEA088465Starter Gen · malfunctionedSTARTER GENERATOR KICKS OFF LINE.SDR 2003FA0000748Alternator · brokenWHILE PERFORMING PHASE INSPECTION ON ENGINE, FOUND EAR BROKEN ON ALTERNATOR. NEED TO MAKE SURE ALTERNATOR IS SHIM MED IN THIS AREA SO THERE IS NO STRESS ON THE EARS.SDR 2003FA0000749Diode · failedPILOT REPORTED ALTERNATOR INOPERATIVE. LIGHT STAYED ON AND AMP METER SHOWED 28 AMPS. UPON FURTHER INVESTIGATION, IT WAS FOUND THAT A DIODE HAD FAILED INSIDE THE ALTERNATOR.SDR QXEA200300676Generator · malfunctionedPDX- NR 1 DC GENERATOR CAUTION LIGHT ILLUMINATED DURING TAKEOFF ROLL. PERFORMED CHECKLIST AFTER END OF CRITICAL FLIGHT PHASE. GENERATOR RESET AND FUNCTIONED NORMALLY FOR REMAINDER OF FLIGHT. PERFORMED OPERATIONAL CHECK IAW Q400 AMM TASK 24-31-00-710-802. NSDR AALA20030634Generator · failedLEVEL AT 310 LT GEN DRIVE LIGHT FLICKERED AND THEN CAME ON STEADY. ROAR HEARD AND VIBRATION FLET. DISCONNECTED THE IDG AND RETURNED TO SCL. PLACARDED INOPERATIVE LEFT ENGINE IDG PER MEL 24-1 AUTH 6-49DC-A, ENTERED IN MIC SHEET AND MPM 24-1 ACCOMPLISHED SERVISDR RAIA00305146Generator · inoperativeGENERATOR NR 4 FELL OFF LINE. MAINTENANCE REMOVER AND REPLACED NR 4 GENERATOR.SDR AUS20030805Alternator · failed(AUS) RT ENGINE ALTERNATOR FAILED. INVESTIGATION FOUND HIGH RESISTANCE IN THE BRUSH BLOCK AND GLAZED BRUSHES.SDR AUS20030804Alternator · failed(AUS) RT ENGINE ALTERNATOR FAILED. INVESTIGATION FOUND HIGH RESISTANCEIN THE BRUSH BLOCK AND GLAZED BRUSHES.SDR SMT2003F00001Drive Belt · failedAIRCRAFT HAS BEEN SUBJECT TO NUMEROUS ALTERNATOR AND AIR CONDITIONING COMPRESSOR DRIVE V BELT FAILURES. SOME WITH LESS THAN 10 HOURS TIME IN SERVICE WITH FIRST FAILURE OCCURRING AT 25 HOURS AIRCRAFT TOTAL TIME SINCE NEW. THE AIR CONDITIONING COMPRESSOR HAS BSDR 2003F00356Control Panel · malfunctionedAIRCRAFT DEPARTED SEA FOR JNU, RIGHT GENERATOR FAIL LIGHT ILLUMINATED AND UNABLE TO RESET. PILOT ADVISED TO RETURN TO SEA. NO EMERGENCY DECLARED. AIRCRAFT LANDED WITHOUT INCIDENT. REMOVED AND REPLACED RT DC CONTROL PANEL. AIRCRAFT RETURNED TO SERVICE. (M)SDR CA030513001Bracket · cracked(CAN) FORWARD ALTERNATOR MOUNTING BRACKET CRACKED. THE CRACK IS LOCATED ON THE BOTTOM SIDE OF THE FORWARD ALTERNATOR MOUNTING HOLE.SDR 2003FA0000507Drive Gear · inoperativeREPORTED ALTERNATOR INOPERATIVE. UPON REMOVAL OF ALTERNATOR FOUND ALTERNATOR DRIVE GEAR TO BE DESTROYED. REMOVED AND INSPECTED OIL FILTER. FOUND SIGNIFICANT AMOUNTS OF METAL.SDR A6WA200340061Idg · underservicedRT IDG CAUTION FOLLOWED BY RT GEN OFF LINE ON TAKEOFF SERVICED IDG. OPS CHECK GOOD. (M)SDR 197050103Drive Shaft · shearedNR 2 GENERATOR DROPPED OFF LINE. AFTER TROUBLESHOOTING PROBLEM, FOUND NR 2 GENERATOR DRIVE SHAFT SHEARED.SDR 2003FA0000428Alternator · overheatedA POOR CONNECTION BETWEEN THE OUTPUT STUD AND THE POSITIVE DIODE MOUNTING ASSEMBLY RESULTED IN EXTREME HEATING OF THE STUD AND MOUNTING ASSEMBLY. THIS HEAT ALSO MELTED THE TEFLON OUTPUT STUD INSULATOR AND VAPORIZED THE DIODE LEADS. THE DIODE MOUNTING ASSEMBLSDR AUS20030488Bracket · cracked(AUS) ALTERNATOR CAPACITOR RETAINING BRACKET FAILED. CAPACITOR SHORTCIRCUITING ON POSITIVE PLATE.SDR CA030425006Alternator · failed(CAN) WHILE AIRCRAFT WAS RETURNING TO AIRPORT, THE PILOT NOTICED AN ELECTRICAL FAILURE, AND RADIO QUIT. CONTINUED APPROACH AND LANDING.SDR 2003FA0000668Alternator · damagedALTERNATOR FAN BLADES CAME OFF.SDR AUS20030401Alternator · failed(AUS) ALTERNATOR FAILED. COMPLETE LOSS OF ELECTRICAL POWER.SDR 2003FA0000387Alternator · failedALTERNATOR FAILED TO PROVIDE ANY OUTPUT WHILE IN USE. SUSPECT INTERNAL FAILURE.SDR VNAA0303023Generator · failedDURING TAKEOFF, THE CREW RECEIVED A LEFT HAND GENERATOR FAIL MESSAGE AND ABORTED TAKEOFF. MAINTENANCE CONTROL THEN HAD OUTSTATION MAINTENANCE CHECK THE LEADS, CLEAN THE CANNON PLUG, AND RESEAT THE DC GENERATOR CONTROL UNIT IN ACCORDANCE WITH DORNIER MAINTENANSDR CA030331008Alternator · failed(CAN) ALTERNATOR FAILURE IN FLIGHT,ELECTRICAL FAILURESDR SWIA200311813Gcu · inoperativeAFTER TAKEOFF, RIGHT GEN LOAD RESET DROPPING OFF AND COMING BACK ON WITH A SINGLE CHIME AND ELEC LIGHT ON MAP. DEF RIGHT GEN PER MEL 24-30-1. REMOVED AND REPLACED NR 2 GCU IAW 24-30-02. OPS CHECK GOOD. P/N: 51539-014A, S/N OFF: 96545, S/N ON: 5272.SDR 2003FA0000207Alternator · inoperativeFAILURE OF THE SHAFT ON AN OVERHAULED ALTERNATOR. THE PILOT REPORTED AN AMMETER DISCHARGED WHILE CONDUCTING A PART 61 INSTRUCTIONAL FLIGHT. A PRECAUTIONARY LANDING WAS MADE AT THE NEAREST AIRPORT. INSPECTION OF THE ELECTRICAL SYSTEM INDICATED A FRACTURE OF SDR AUS20030102Brushes · worn(AUS) ALTERNATOR CONTAMINATED WITH ENGINE OIL FROM A DETERIORATED CRANKSHAFT SEAL. THE UNIT WAS DISASSEMBLED AND THE FOLLOWING DEFECTS NOTED: THROUGH BOLTS WERE NOT LOCKWIRED, THROUGH BOLT THREAD STRIPPED. DRIVE END BEARING NOISY. BRUSHES WORN TO LIMITS. INTESDR CA030206003Field Wire · chafed(CAN) ON TAKEOFF THE TWO ALTERNATOR LIGHTS CAME ON, THE PILOT RETURNED TO THE AIRPORT. THE LIGHTS EXTINGUISHED AND THEN HE CARRIED OUT A GROUND RUN, EVERYTHING WAS BACK TO NORMAL. A SECOND TAKEOFF WAS CARRIED OUT, THE PROBLEM RETURNED. THE AUXILIARY CONTROL BOSDR QXEA0300130Generator · malfunctionedSEA-ON FLIGHT NUMBER 2022 - NR 1 DC GENERATOR MASTER CAUTION CAME ON. RAN CHECKLIST, GENERATOR RESET FOR LESS THAN ONE MINUTE. TESTED NR 1 DC GENERATOR. OPERATED NR 1 DC GENERATOR WITH LOTS OF DC CONSUMERS. OPERATIONAL CHECK GOOD. NO PARTS REPLACED. AIRCSDR SIMA200302702Alternator · inoperativeDURING TAXI CREW REPORTED AND UNCOMMANDED ENGINE SHUTDOWN OF THE LEFT ENGINE. CREW FOLLOWED CHECKLIST AND RESTARTED ENGINE. ENGINE SHUTDOWN AGAIN AFTER APPROXIMATELY SIX MINUTES. AIRCRAFT WAS RETURNED TO THE GATE. MAINTENANCE FOUND THE PERMANENT MAGNET ALTSDR HEEA082512Control Unit · malfunctionedDIFFICULT TO RESET, APP. 30 SECOND DELAY FROM SWITCH ACTIVATION TO GENERATOR ON LINE.SDR CA030106008Wire · burned(CAN) DURING CRUISE, THE LT GENERATOR INOP LIGHT CAME ON, THE PILOT ATTEMPTED TO CYCLE THE GENERATOR SWITCH, BUT FAILED AGAIN TO COME BACK ON LINE. MAINTENANCE FOUND THE WIRE CABLE ASSEMBLY BURNED NEAR THE CROSS TIE SWITCH AT THE CRIMPED TERMINAL. THIS ASSEMBLSDR COEA02021742Alternator · failedFLIGHT CREW REPORTED LEFT ALTERNATOR FAILED INFLIGHT DURING ICING CONDITIONS WHILE DEPARTING FROM YVR. FLIGHT CREW RETURNED TO YVR AND LANDED WITHOUT INCIDENT. NO EMERGENCY DECLARED. MAINTENANCE PERSONNEL REPLACED LEFT ALTERNATOR. AIRCRAFT RETURNED TO SERVSDR CA021210008Gear · corroded(CAN) GEAR TEETH FOUND CORRODED ON ALTERNATOR DRIVE HUB. CORRESPONDING DRIVE RING INSIDE ENGINE CHECKED OK.SDR DJFA2006370Generator · unknownLOST LT GENERATOR IN FLIGHT, COULD NOT RESET. AIRCRAFT DIVERTED AND LANDED WITHOUT INCIDENT. COULD NOT DUPLICATE PROBLEM ON THE GROUND, SWAPPED GCU GROUND RAN AND TEST FLEW AIRCRAFT WITH NO FURTHER PROBLEMS.SDR CA021118009Alternator(CAN) PILOT REPORTED STANDBY ALTERNATOR INOP LIGHT CAME ON. THE SYSTEM WAS SHUT DOWN AND RETURN TO BASE. THE ALTERNATOR WAS FOUND TO BE UNSERVICABLE. A SEARCH OF THE AIRCRAFT RECORDS FOUND THAT THIS WAS T HE ORIGINAL ALTERNATOR. THERE IS NO T.B.O. PUT ON THISDR QXEA0201890Generator · failedGEG- NR 2 DC GENERATOR CAUTION LIGHT ILLUMINATED. COMPLIED WITH EMERGENCY ABNORMAL CHECKLIST. BOTH LEFT AND RIGHT TRU CAUTION LIGHTS WERE NOT ILLUMINATED. REMOVED AND REPLACED NR 2 DC GENERATOR. OPERATIONAL CHECK GOOD. LEAK CHECK GOOD. AIRCRAFT RETURNED SDR CA021115010Bearing · shorted(CAN) LT GENERATOR TRIPPED, PILOTS REPORTED AN UNDER VOLTAGE CONDITION.ACTION: LT GENERATOR REMOVED, UPON INSPECTION OF COMPONENT, GEARING ASSEMBLY PARTS HAD MIGRATED TO, AND SHORTED OUT A BRUSH HOLDDOWN SPRING TO THE GENERATOR CASE.SDR 2002FA0001378Bearing · damagedTHE FRONT BEARING ON THE ALTERNATOR HOUSING FAILED CAUSING THE HOUSING THERE TO BE DAMAGED, THE BELT TENSIONING STRAP TO THE ENGINE CASE TO CRACK AND THE ROTOR TO FALL LOOSE ENOUGH INSIDE THE HOUSING TO DESTROY THE ELECTRICAL GENERATING CAPABILITIES OF THE ALTSDR RAIA00211300Gcu · intermittent5497-STL- LEFT GENERATOR INTERMITTENT FAILURE. MAINTENANCE REMOVED AND REPLACED LEFT GENERATOR CONTROL UNIT, OPS CK OK.SDR 2002FA0001279Nut · looseALTERNATOR CHARGE, FAILURE DUE TO LOOSE PULLEY FAN AND SHROUD ASSEMBLY. UNDER ANY LOAD SLIPPAGE OCCRUED . HEATED NUT AND LOOSENED ASSEMBLY. KEYWAY INSTALLATION WOULD SOLVE POSSIBLE PROBLEM AND PULLEY SLIPAGE. AIRCRAFT WAS REPORTING INTO IMC PREFLIGHT RUN USDR RAIA00211298Gcu · inoperative5458-STL- RIGHT GENERATOR FELL OF LINE. MAINTENANCE REMOVED AND REPLACED RIGHT GENERATOR CONTROL UNIT, OPS CK OK.SDR AUS20021248Bearing · disintegrated(AUS) LH ALTERNATOR OUTER BEARING COLLAPSED. ALTERNATOR CONTAMINATEDWITH METAL FROM FAILED BEARING.SDR CA021022004Fan · broken(CAN) ON VISUAL INSPECTION NOTICED COOLING FAN'S FINS BROKEN AND METAL STIFFENER BROKEN IN HALF, INSIDE THE ALTERNATOR CASE.
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