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 NDF2009F00001Alternator · failedALTERNATOR FAILED IN FLIGHT. ALTERNATOR WAS INSTALLED DURING ENGINE O/H BY MFG.SDR CA090604006Mount Bracket · cracked(CAN) UPON ROUTINE INSP, IT WAS NOTED THAT THE ALTERNATOR MOUNTING BRACKET WAS CRACKED AT THE UPPER BOLT HOLE WHERE THE AN4-5A BOLT ATTACHES TO THE 22-2412-00-12 SPACER. THE BOLT HOLE WAS ELONGATED AND THE CRACK PROGRESSED TO THE EDGE OF THE BRACKET WHERE A SMSDR CA090708009Alternator · failed(CAN) ACFT HAD AN INTERMITTENT CHARGING PROBLEM THAT RESULTED IN FAILURE OF ALTERNATOR CONTROL UNIT. ALTERNATOR WAS REPLACED ALONG WITH ALTERNATOR CONTROL UNIT AND FUNCTIONED PROPERLY ON GROUND. ACFT CONTINUED TO HAVE SPORATIC CHARGING PROBLEMS EVEN AFTER ALTSDR 2009FA0000385Housing · crackedFOUND A CRACK IN THE ALTERNATOR HOUSING. NOT AIRWORTHY, NEEDED TO BE REPLACED. TIME IN SERVICE 510 HOURS. (K)SDR 2009FA0000295Flange · crackedCUSTOMER REPORTED LARGE OIL LEAK. INSPECTED AND FOUND NR 2 STANDBY ALTERNATOR MOUNTING FLANGE CRACKED. .7500 OF THE FLANGE HAD COMPLETELY SEPARATED FROM THE ALTERNATOR. ONLY ONE MOUNTING STUD HELD THE ALTERNATOR ON THE ENGINE. CORRECTIVE ACTION WAS TO INSTSDR HNAA2009041500120Generator · malfunctionedBOTH DIRECT CURRENT GENERATORS FELL OFF LINE AT SAME TIME WHEN STRUCK BY LIGHTNING. GROUND RAN ENGINES, BOTH DIRECT CURRENT GENERATORS OPERATE NORMALLY PER DASH 8 RUN UP MANUAL.SDR CA090408012Shaft · damaged(CAN) REPORTED ON 03 APRIL 2009 THAT ACFT EXPERIENCED AN IN FLIGHT EMERGENCY CAUSED BY FUMES IN THE COCKPIT AND THE ALTERNATOR REGISTERED A FULL DISCHARGE. FURTHER INVESTIGATION REVEALED THE ALTERNATOR OUTPUT POST HAD CHAFED THRU THE RUBBER BOOT AND WAS SHORTISDR CA090331008Alternator · failed(CAN) ALTERNATOR QUIT CHARGING - REPLACED ALTERNATOR.SDR CA090302001Alternator · failed(CAN) CHARGING SYS QUIT - BATTERY WENT DEAD - FOUND ALTERNATOR HSG LOOSE AND ALTERNATOR WOULD NOT SPIN WHEN FIELD POWER APPLIED.SDR 2009FA0000219Belt · brokenBOTH RT AND LT ALTERNATOR BELTS BROKE IN FLIGHT, POSSIBLE CAUSE WAS BOTH ENGINES MAY HAVE BEEN STARTED WITH NOSE COWL PLUG WOOL BLANKETS INSTALLED, THUS, BINDING UP THE PULLEYS AND/OR BELTS WHILE THE REST OF THE MOVING PARTS SEVERELY CUT INTO THE BELTS. BOTH SDR CA090219018Alternator · malfunctioned(CAN) WHILE CONDUCTING TRAINING FLIGHTS, AN ACFT REPORTED ELECTRICAL PROBLEMS DURING LANDING. GROUND INSP REVEALED THAT THE BATTERIES WERE DEAD. MX WAS DISPATCHED FOR REPAIRS. FURTHER INVESTIGATION FOUND RT ALTERNATOR DRIVE BELT LOOSE AND LT ALTERNATOR UNSERVISDR CA090206002Generator · failedON MORNING GROUND RUN NR 2 GENERATOR WOULD NOT TAKE A LOAD MORE THAN 60 AMPS AS READ OFF EIS. NR 2 GENERATOR WOULD GO OFF AND ON LINE BY IT SELF (FLASHING WARNING) ON ANNUNCIATOR PANEL AND OVERHEAD PANEL. REPLACED GENERATOR WITH SERVICEABLE UNIT, DEFECT GONESDR CA090119008Generator · destroyed(CAN) PILOT REPORTS IN DESCENT WITH POWER PULLED BACK, THEY COULD FEEL A SHUDDER/VIBRATION FROM THE RIGHT SIDE OF THE PLANE AND THEN THE R GEN FAIL AMBER CAS POSTED. THE PILOT FOUND THE RIGHT LOWER COWLING HAD BLACK SOOT STREAMED ON THE BELLY OF THE ENGINE. SDR 2009FA0000380Alternator · failedALTERNATOR FAILED AFTER 116 HOURS TIME IN SERVICE SINCE OVERHAULED. THESE SHOULD HAVE A LONGER LIFE SPAN.SDR HNAA2008121000350Generator · malfunctionedNR 2 DC GENERATOR WOULDN'T COME ON LINE, NR 2 DC GENERATOR HOT CAUTION LIGHT ILLUMINATED AND SMOKE AND SPARKS CAME FROM NR 2 ENGINE. REMOVED AND REPLACED RELAY 3421K2, REMOVED AND REPLACED NR 2 DC GCU AND STARTER GENERATOR IAW 24-30-02R, OPS GOOD PERFORMED HISDR CA080918003Alternator · damaged(CAN) THE ACFT, A CESSNA 337G WAS ON A RETURN FLIGHT TO MAIN BASE WHEN THE PILOT NOTICED A INDICATION OF A FAILED FRONT ENGINE ALTERNATOR. THE ACFT LANDED WITHOUT INCIDENT AND MX INVESTIGATED THE PROBLEM. DURING REMOVAL OF THE FRONT ALTERNATOR, IT WAS DISCOVSDR D382008F00000Thru Bolt · broken22.2 HOURS AFTER INSTALLING AN OVERHAULED (ALV9510) ALTERNATOR, THE PILOT CAME TO ME ABOUT A THRU BOLT THAT WAS COMING OUT OF THE ALTERNATOR CASE. THERE WAS ONE THRU BOLT STICKING OUT OF THE CASE AND ANOTHER HAD COME OUT AND WAS GONE. THE ALTERNATOR WAS CHARGISDR SIMA200822202Generator · failedON FLIGHT 4772 AFTER TAKEOFF CREW REPORTED LT DC GEN LIGHT ON CWP. CREW ELECTED TO RETURN TO FIELD. EMERGENCY WAS DECLARED, ACFT LANDED WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. REMOVED AND REPLACED LT DC GEN IAW MTX W/C 24-47-33. ACFT RETURNED TO SERVSDR SIMA200822201Generator · failedON FLIGHT 4772 AFTER TAKEOFF CREW REPORTED LT DC GEN LIGHT ON CWP. CREW ELECTED TO RETURN TO FIELD. EMERGENCY WAS DECLARED, ACFT LANDED WITHOUT INCIDENT. ACFT REMOVED FROM SERVICE. REMOVED AND REPLACED LT DC GEN IAW MTX W/C 24-47-33. ACFT RETURNED TO SERVSDR CA080811001Alternator · failed(CAN) ON DESCENT, CREW OBSERVED THE NR 2 GENERATOR FAIL WAS ILLUMINATED. THE NR2 ENGINE WAS SHUTDOWN AND THE ACFT RETURNED TO POINT OF DEPARTURE AND LANDED WITHOUT FURTHER PROBLEM. MAINT REPLACED THE NR2 GENERATOR AND THE ACFT WAS RETURNED TO SERVICE.SDR 2008FA0000409Alternator · damaged4 SCREWS THAT HOLD THE RECTIFIER PLATE INTO THE BACK CASE OF ALTERNATOR CAME LOOSE AND CONTACTED THE ROTOR, DESTROYED ALTERNATOR. (K)SDR CHQA200800100O-Ring · brokenFLIGHT 5981, STL TO IAH. WHILE CLIMBING THROUGH FL190, THE CREW NOTICED THE OIL PRESSURE FOR E1 DECREASING BELOW 50 PSI. THE QUANTITY WAS THEN CHECKED AND IT INDICATED 2 QUARTS OF OIL. THE ENGINE WAS SHUTDOWN PER QRH PROCEDURES AND THE AIRCRAFT RETURNED TO SDR 3657Alternator · failedAIRCRAFT DEPARTED KCLT AT 0825 FOR DESTINATION KJAX. DURING CRUISE, ALTERNATOR 1 ANNUNCIATOR LIGHT ILLUMINATED INDICATING A FAILURE. THE PILOT DIVERTED TO KGMU WITH AN UNEVENTFUL LANDING. THE ALT 1 FIELD WIRE WAS FOUND TO BE BROKEN. FIELD WIRE WAS REPAIREDSDR QXEA200800435Generator · failedSEA - FLIGHT 2280 - RECEIVED A DC BUS CAUTION ALONG WITH MESSAGES FOR THE NR 2 DC GENERATOR, MAIN BATTERY, ANTI-SKID, AND RUDDER CONTROL LIGHT WAS ABLE TO RESET BUS PER THE CHECKLIST. MAINTENANCE TRIED TO PERFORM A GROUND RUN TO CONFIRM BUT FOUND THAT THE NR SDR QXEA200800428Generator · overheatedGEG - FLIGHT 2347 (MSO-SEA), CLIMBING THROUGH 19,000 FEET RECEIVED A MASTER CAUTION MESSAGE WITH THE DC BUS FAULT ALONG WITH LOSS OF PRESSURIZATION. PERFORMED UNEVENTFUL DESCENT. RESET BUS PER CHECKLIST AND THE BUS CAME BACK. ALSO HAD DC GEN HOT, STALL SYSTSDR QXEA200800434Generator · failedSTS - AFTER ENGINE START, RECEIVED A NR 1 DC GENERATOR HOT CAUTION LIGHT. MAINTENANCE REPLACED THE NR 1 ENGINE STARTER GENERATOR OIL SEAL AND THE DC STARTER GENERATOR. OPERATIONAL CHECKS GOOD. AIRCRAFT RETURNED TO SERVICE.SDR U5QA06011Generator · failedPILOT REPORTED VIBRATION FOLLOWED BY GENERATOR LOAD DROPPING TO 0 AND GENERATOR FAIL LIGHT COMING ON. VIBRATION CONTINUED AND WAS INCREASING IN INTENSITY. MADE A PRECAUTIONARY LANDING.SDR QXEA200701762Generator · malfunctionedSJC FLIGHT NR 2452: NR 1 DC GEN CAUTION LIGHT ILLUMINATED AFTER START. EXTERNAL POWER KICKED OFF DURING START. AIRCRAFT RETURNED TO BLOCK. MAINTENANCE POWERED A/C DOWN AND REPOWERED/RESTARTED GEN. ALL OPERATE NORMALLY AS PER MTX CONTROL. NO PARTS REPLACEDSDR HEER118259Control Unit · unknownNR 1 DC GENERATOR DROPS OFF LINE.SDR QXEA200701757Generator · inoperativeSEA - ON FLIGHT 2199, NR 2 DC GENERATOR HOT CAUTION LIGHT ILLUM. DURING TAXI, FLICKERING ON AND OFF THE ENTIRE TIME. CONDUCTED CHECKLIST AND UPON TURNING OFF THE DC GENERATOR SWITCH, THE CAUTION LIGHT WENT OUT. MAINTENANCE REMOVED AND REPLACED NR 2 DC GENERSDR QXEA200701729Generator · malfunctionedSEA-ON FLIGHT 2199, RETURNED TO GATE NR 1 DC GENERATOR HOT CAUTION. MAINTENANCE REMOVED AND REPLACED NR 1 DC GENERATOR. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.SDR CA071017001Generator · failed(CAN) IN CRUISE FLIGHT RT GENERATOR FAILED. AFTER FOLLOWING PROCEDURES A/C LANDED WITHOUT ANY MORE INCIDENT. TROUBLESHOOTING WITH MDC REPORTED PCB6 AT FAULT FROM GCU P/N R608-003. FURTHER TROUBLESHOOTING REVEALED RT GENERATOR WAS AT FAULT NOT THE GCU. GENERATOSDR CA070927002Gcu · failed(CAN) AFTER DEPARTURE, THE CREW OBSERVED A NR 2 DC GENERATOR TRIP. THE AIRCRAFT RETURNED TO POINT OF DEPARTURE AND LANDED WITHOUT FURTHER DIFFICULTY. MAINTENANCE REPLACED THE NR 2 GENERATOR CONTROL UNIT AND THE AIRCRAFT WAS RETURNED TO SERVICE AFTER SATISFACTOSDR 2007FA0000817Alternator · failedOVERHAULED DOFF10300B ALTERNATOR FAILED AFTER 458 HOURS IN 35 MONTHS OF USE.SDR 2007FA0000706Alternator · failedALTERNATOR FAIL AFTER 174 HOURS OF NORMAL OPERATION.SDR 2007FA0000705Alternator · failedALTERNATOR FAILED AFTER 17.6 HOURS.SDR CA070710001Alternator · inoperative(CAN) ALTERNATOR NOT CHARGING . (TC NR 20070710001)SDR CA070705012Alternator · failed(CAN) ALTERNATOR FAILED ON STARTUP. FOUND ROTOR JAMMING AND PULLEY HAD OVERHEATED. LOOSE PARTS HEARD INSIDE ALTERNATOR. NO PREVIOUS INDICATIONS OF IMPENDING FAILURE. (TC NR 20070705012)SDR CA070515006Bracket · broken(CAN) ALTERNATOR BRACKET BROKEN. REPLACED BRACKET WITH NEW PART PN LW10382. (TC NR 20070515006)SDR HNAA0700069Generator · lightning strikeLIGHTNING STRIKE DURING CLIMB & LOST BOTH DC GENS. C/W LIGHTNING STRIKE INSP W/C. NO DEFECTS NOTED AT THIS TIME. STARTER/GEN P/N: 23088-008, S/N-POS 1:788, POS 2:1159. NO GENERATOR CHANGED.SDR NSVA20070093Generator · malfunctionedNO AUTOCOARSEN GREEN STATUS LIGHTS. REMOVED AND REPLACED NR 2 DC GENERATOR IAW COLGAN W/C 2431-045. OPS CHECK AUTO COARSEN IAW MM 61-22-00. MEL CLEARED. PN ON/OFF 23080-031 SN ON 98275, SN OFF 5353.SDR CA070215004Alternator · malfunctioned(CAN) ON CLIMB OUT A LOW VOLTAGE LIGHT INDICATION. PILOT RECYCLED ALTERNATOR, LOW VOLTAGE INDICATION WAS NOT CORRECTED AND PILOT RETURNED FOR LANDING (TC NR 20070215004)SDR 2007FA0000236Terminal · brokenFIELD WIRE TERMINAL END BROKEN AT ALTERNATOR TERMINAL LUG CAUSED FAILURE OF ALTERNATOR TO CHARGE BATTERY. (K)SDR 2007FA0000085Coupling · failedALTERNATOR DRIVE COUPLING FAILED ON LT AND RT ALTERNATOR, IN IMC SIMULTANEOUSLY. COUPLING FAILURE RESULTED IN TOTAL ELECTRICAL FAILURE, RT ENGINE.SDR 2007FA0000077Coupling · failedALTERNATOR DRIVE COUPLING FAILED ON LT AND RT ALTERNATORS, IN IMC SIMULTANEOUSLY. 1 PIECE COUPLING WITH A RUBBER LORD BUSHING BONDED/INTERFERENCE FIT SLIPPED, CAUSING THE ALTERNATORS FAILURES. PILOTS LOST ELECTRICAL AND DESCENDED THROUGH ICE, UNABLE TO SHED SDR 2007FA0000076Coupling · failedALTERNATOR DRIVE COUPLING FAILED ON LT AND RT ALTERNATORS, IN IMC SIMULTANEOUSLY. 1 PIECE COUPLING WITH A RUBBER LORD BUSHING BONDED/INTERFERENCE FIT SLIPPED, CAUSING THE ALTERNATORS FAILURES. PILOTS LOST ELECTRICAL AND DESCENDED THROUGH ICE, UNABLE TO SHED SDR PNSA070101Alternator · failedEN ROUTE TO AKN FROM PDB AIRCRAFT HAD AN ALTERNATOR FAILURE AND LOSS RADIOS. PILOT TRIED TO GET LIGHT SIGNAL FROM AKN TOWER WITH NO SUCCESS AND DIVERTED TO 5NK AND CONTACTED AKN MAINTENACE. MAINTENANCE CHANGED OUT THE FAILED ALTERNATOR AND BATTERY. FLIGHT CSDR QXEA200603231Generator · malfunctionedYKA - ON FLIGHT 2183, NR 2 DC GENERATOR CAUTION ON LANDING, RESET PER CHECKLIST, NR 2 DC GENERATOR RESET AND OPERATED NORMAL. MAINTENANCE REMOVED AND REPLACED DC GENERATOR. OPERATIONAL CHECK GOOD. AIRCRAFT RETURNED TO SERVICE.SDR NSVA200600233Generator · leakingPAX NOTICED WHITE SMOKE COMING OUT OF INLET AND OUTLET PRECOOLER. FOUND OIL FROM DC GENERATOR EXHAUST WAS COLLECTING IN PRECOOLER AIRSCOOP. CLEANED COWLING DC GENERATORS AND PRECOOLER, AS NEEDED OPS CHECK ENGINE IAW AMM 71-00-00. OPS CHECK GOOD IAH 12-17-20SDR HNAA0600127Generator · unknownNR 2 DC GENERATOR STARTED CYCLING ON AND OFF, WHEN SHUT DOWN THE NR 1 DC GENERATOR STARTED CYCLING ON AND OFF. PERFORMED MAINTENANCE GROUND RUNS, COULD NOT DUPLICATE.
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