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 AU010316Bearing · failed(AUS) RT ENGINE ALTERNATOR BEARING FAILED.SDR MALA010279Generator · defectiveON FLIGHT 3116, RIGHT DC GENERATOR FAILED IN FLIGHT, ACCOMPLISHED ORH, COULD NOT GET BACK ONLINE. AIR RETURN TO MSP. MAINTENANCE REPLACED RIGHT DC GENERATOR P/N 51539-007B, S/N ON 98079, S/N OFF 97814 IAW AMM 24-30-00. OPS CHECK GOOD.SDR CA010409004Brush Holder · worn(CAN) DURING CRUISE FLIGHT THE SECOND GENERATOR WENT OFF LINE, THE PILOT DID A RESET, THE GENERATOR CAME BACK ONLINE. APPROXIMATELY FIVE MINUTES LATER IT WENT OFF LINE AGAIN. THIS TIME THE PILOT DID NOT TRY TO RESET. ONCE THE AIRCRAFT WAS BACK ON THE GROUND THSDR RAIA00103009Sensor · failed7170-STL- RIGHT DC GENERATOR FAULTED IN FLIGHT. MAINTENANCE INSPECTED AND REPLACED RIGHT HALL EFFECT SENSOR.SDR GLBA2001051Starter Gen · failedLEFT DC GENERATOR ANNUCIATOR ILLUMINATED INFLIGHT WOULD NOT RESET. REPLACED STARTER-GEN, OPS CHECKED GOOD.SDR CA010305008Brushes · worn(CAN) DURING CLIMB OUT THE GEN 2 WENT OFF LINE. AS THE LOAD DROPPED THE GEN 2 WAS TURNED BACK ON LINE AND IT STAYED ON LINE UNTIL THE LOAD WAS INCREASED AND THEN IT WENT BACK OFF LINE. AIRCRAFT RETURNED TO BASE AND THE GEN 2 WAS REPLACED. THIS GEN IS A POST SBSDR CA010223015Brushes · worn(CAN) NR 2 GENERATOR SYSTEM TRIPPED OFF LINE IN FLIGHT. WOULD NOT COME BACK ON LINE. INVESTIGATION SHOWED THAT THE BRUSHES WERE WORN OUT AND THE COMMUTATOR SHOWED SIGNS OF PITTING AND ARCING. THE GENERATOR ASSEMBLY WAS REPLACED AND THE AIRCRAFT WAS RETURNED TSDR CA010212012Brushes · worn(CAN) GEN BRUSHES WERE WORN AND COMMUTATOR DAMAGED. GEN 2 REPLACED. THE DRIVE HAD ALSO SHEARED. THE P/N OF THE DRIVE IS 524.32.12.137. THESE 2 ITEMS ARE TROUBE ITEMS AND NEED LOOKING INTO FOR THE CAUSE AND CURE.SDR 20010205CW007Alternator · separatedOHC ALTERNATOR, BOLTS HOLDING HOUSING TOGETHER, 2 BACKED OUT, LEFT HANGING BY INTACT SAFETY TO 3RD BOLT.SDR SIMA200101202Generator · inoperativeALB - FLT 5012 - CREW REPORTED THE LEFT DC GENERATOR LIGHT ILLUMINATED IN FLIGHT. RESET PER AOM, GENERATOR LIGHT STILL REMAINED ILLUMINATED. MAINTENANCE REMOVED AND REPLACED LEFT DC GENERATOR IAW SAAB MM. OPS AND LEAK CHECK WAS GOOD AND AIRCRAFT WAS RETURNESDR GLBA2001003Generator · inoperativeRETURN TO BLOCK - RIGHT GEN FELL OFF LINE WOULD NOT RESET, R/R STARTER-GEN SYSTEM OPS CHECKED GOODSDR CA010322008Brushes · worn(CAN) OUR STANDBY ELECTRICAL POWER INOP LIGHT WAS FADING IN AND OUT AT APPROX 65 - 67 PERCENT NG. THE RESISTOR WAS CHECKED OUT AT 110 OHMS AND THEN THE FIELD BRUSHES WERE CHECKED - FOUND THAT TO BE WORN PAST THE POINT OF MAKING CONTACT WITH THE SLIP RINGS. NEWSDR 20010129CW006Alternator · inoperativeALTERNATOR INOPERATIVE.SDR CA010112002Brushes · worn(CAN) GEN 2 WOULD GO OFF LINE WHEN PROBE HEAT SELECTED. FOUND GEN 2 BRUSHES WORN AS WELL AS WEAR ON COMMUTATOR. UNDER HEAVY LOAD THIS CAUSED GEN 2 TO GO OFF LINE. THESE ARE THE NEW AND IMPROVED BRUSHES THAT WERE INSTALLED TO COMPENSATE FOR THE OLD BRUSHES WEARSDR AU001251Generator · failed(AUS) NR 2 (RT) MAIN GENERATOR FAILED.SDR RAIA0012005Sensor · failed7006-SGF-RT GENERATOR FELL OFF LINE DURING TAXI. MAINTENANCE INSPECTED AND REPLACED RIGHT HALL EFFECT SENSOR.SDR SIMA33410Generator · malfunctionedMIA - FLT 5239 - NR 2 DC GENERATOR FAULTS IN FLT. REMOVED AND REPLACED THE NR 2 DC GENERATOR. OPS CHECK GOOD. (M)SDR 20001218SH018Alternator · shortedFOUND WORN BRUSH IN ALTERNATOR CAUSING SPRING OF BRUSH TO COME OUT OF POSITION TO SHORT ALTERNATOR FIELD. (X)SDR CA010111024Generator · failed(CAN) WHILE IN CRUISE THE NR2 GENERATOR FAILED. WHEN THE GENERATOR WAS EXAMINED THE BRUSHES WERE FOUND TOTALLY GONE.SDR AU001123Alternator · failed(AUS) ALTERNATOR FAILED. WINDINGS AND DIODES BURNT. ALTERNATOR HAD ONLY RECENTLY BEEN OVERHAULED. (X)SDR CA001103009Generator · failed(CAN) 4 GENERATORS WERE TRIED ON THIS AIRCRAFT OVER A PERIOD OF 15 - 18 MONTHS, THE END RESULT WAS INSTALLING AN ALTERNATOR KIT, AS THE COMPANY OVERHAULED THE GENERATOR WAS DOING SUBSTANDARD WORK.SDR CA001024003Generator · failed(CAN) NORMAL TIME BETWEEN OVERHAULS FOR THIS UNIT IS 1300 HOURS; THIS GEN ONLY HAD 109 TSO. THE FOLLOWING PROBLEMS WERE FOUND: BRUSHES WERE WORN, FOUR SCREWS WHICH RETAIN A PLATE ON THE GEN WERE COMPLETELY WORN OUT EVEN IF THEY HAD ALWAYS BEEN HELD TOGETHER WSDR AU001028Hub · failed(AUS) ALTERNATOR FLEXIBLE DRIVE COUPLING FAILED. (X)SDR SIMA2782Gcu · malfunctionedMIA - FLT 5295 - NR 2 DC RETURNED TO MIA WITH NO FURTHER INCIDENTS REPORTED. RESET THE DC BPCU AND THE NR 2 DC GCU CONTROL BOXES. SYSTEM OPS CHECKED GOOD. (X)SDR AU000941Wire · cracked(AUS) RIGHT ALTERNATOR FIELD WIRING CRACKED ALLOWING SHORT CIRCUIT. (X)SDR CA001018015Drive Shaft · sheared(CAN) SHAFT SHEARED WHILE INSTALLATIOIN TORQUE WAS BEING APPLIED.SDR 20000920SH009Alternator · faultyALTERNATOR 60-AMP CIRCUIT BREAKER TRIPPED. JUMP STARTED AIRCRAFT. ENGINE GROUND RUN. ALTERNATOR CHARGED BATTERY WITH RADIO MASTER SWITCH ON. AS LANDING TAXI LIGHTS WERE TURNED ON, 60-AMP CIRCUIT BREAKER TRIPPED. INSTALLED TROUBLESHOOTING EQUIPMENT, INDICSDR 20001017SH042Alternator · failedDURING TRAINING FLIGHT, PILOT NOTICED SEVERAL HIGH AMPERAGE SPIKES FOLLOWED BY A TOTAL LOSS OF ELECTRICAL OUTPUT FROM THE ALTERNATOR. ALSO DAMAGED ELECTRICALLY WERE THE VOLTAGE REGULATOR AND OVERVOLTAGE RELAY. POSSIBLE CAUSE FOUND DURING A BENCH CHECK OF AFFSDR AU000874Alternator · faulty(AUS) ALTERNATOR FAILED. INVESTIGATION COULD FIND NO FAULT. SUBMITTER SUSPECTED CAUSED BY STICKING BRUSH. (X)SDR 20000920SH004Alternator · failedALTERNATOR HAD NO OUTPUT. (X)SDR CA000926014Alternator · seized(CAN) ALTERNATOR SEIZED. BELT PULLEY SHEARED FROM MAIN DRIVESHAFT. (X)SDR CA000829022Drive Shaft · sheared(CAN) GEN 2 FAILED IN FLIGHT. UPON MAINTENANCE INVESTIGATION, IT FOUND THAT THE DRIVE SHAFT WAS SHEARED. THE REAR BEARING HAD SPUN ON THE DRIVE SHAFT AND MARKED IT UP ALSO. IT IS NOT FELT THIS WAS A CONTRIBUTION TO THE SHEARED FAILURE BUT IT IS THE SECOND DRIVSDR Y2PA00041Starter Gen · failedOKC- FLT 92269 - DUAL GEN FAIL; CAUSED BATTERIES TO TRIP OFF-LINE, NR 1 FAILED ON, NR 2 FAILED OFF. CREW LOST NR 2 GEN, ACCOMP SINGLE GEN FAIL CHKLIST, RESETTING GEN TWICE. 4 MINUTES LATER, LOST NR 1 GEN, BATTERIES KICKED OFF-LINE. ACCOMP DOUBLE GEN FAIL, BSDR 20000920SH002Alternator · malfunctionedALTERNATOR DROPS OFF LINE. (X)SDR C2XA00IA229Generator · shortedFLT 4219 - IAH-AMA - THE CREW REPROTED THAT THE NR 2 GENERATOR OFF BUS LIGHT ILLUMINATED. THE AIRCRAFT LANDED AT AMA WITHOUT INCIDENT WHERE MAINTENANCE FOUND THE NR 2 GENERATOR TO HAVE SHORTED INTERNALLY, BURNING AND SPLITTING THE HOUSING. MAINTENANCE REMOVESDR 20000808SH002Alternator · failedRIGHT ALTERNATOR WAS INOPERTIVE ON RUN-UP BEFORE DEPARTURE. CAUSE OF PROBLEM WAS A DEFECTIVE ALTERNATOR. REPLACED THE ALTERNATOR AND CHECKED THE CHARGING SYSTEM, OK.SDR CA000804011Stator · broken(CAN) TWO LEGS OF STATOR WINDING BROKE AT DIODE PLATE. RESULTS NO ALTERNATOR OUTPUT. (X)SDR AU000542Housing · cracked(AUS) ALTENATOR REAR HOUSING CRACKED AT ATTACHMENT POINTS.SDR CA000803005Alternator · failed(CAN)ALTERNATOR NOT CHARGING, POSSIBLY DUE TO INTERNAL PROBLEMS.SDR CA000720007Brush Block · worn(CAN) UPON LANDING NR 2 GENERATOR WENT OFF LINE RED ANNUNCIATOR GEN 2 OFF ILLUMINATED. PILOT WAS UNABLE TO RESET GENERATOR. INVESTIGATION OF GENERATOR SYSTEM FOUND NR 2 GENERATOR BRUSHES WERE WORN TO THE EXTENT THE BRUSHES NO LONGER CONTACTED THE SLIP RINGS.SDR 20000821SH004Cooling Fan · brokenDURING 100-HOUR INSPECTION, NOTED ALL OF THE BLADES OF THE COOLING FAN HAD BROKEN FROM THEIR MOUNTING PLATE AND SEPARATED FROM THE ALTERNATOR. ALTERNATOR WAS STILL PROPERLY FUNCTIONING. THE COOLING FAN BLADES WERE ATTACHED TO AN ALUMINUM PLATE. THE BLADES HSDR 20000712SH012Housing · loosePILOT REPORTED ALTERNATOR INOPERABLE AT TAKEOFF POWER. AT IDLE, ALTERNATOR APPEARED TO OPERATE NORMALLY. UPON EXAMINATION, FOUND THE COARSE THREAD INTERNAL WRENCHING BOLTS HOLDING THE ALTERNATOR CASE HALVES WERE LOOSE, WHICH AT HIGH ENGINE RPM, CAUSED THE CSDR 20000711SH007Alternator · brokenHOLES DISCOVERED IN LOWER AND UPPER ENGINE COWLING ON LEFT SIDE. REMOVED COWL AND FOUND ALTERNATOR COOLING FAN BROKEN CAUSING DAMAGE TO COWL. REPAIRED COWL AND REPLACED FAN ASSY WITH NEW PART. SUBMITTER STATED IT APPEARED THAT THE ''DISHED'' FRONT PLATE WASSDR 20000920SH003Alternator · inoperativeALTERNATOR INOPERATIVE. (X)SDR CA000614001Generator · destroyed(CAN) LT ENGINE GEN FAILURE LIGHT CAME ON & GEN SELECTED OFF. WHEN A/C SLOWED FOR LDG SMOKE OBSERVED IN COCKPIT. ELECT. SYS WERE SHUT OFF & SMOKE DISSIPATED. UPON INVESTIGATION FOUND THAT GENERATOR HAD SHEARED OFF ALL OF MOUNTING STUDS WITH GEN LYING IN BOTTOMSDR MALA00358Generator · inoperativeDC GENERATOR (LT) INOP. MAINTENANCE REPLACED PDU, RAN A/C OPS CHECK GOOD.SDR AU000408Rotor · shorted(AUS) LEFT ALTERNATOR SHORT CIRCUITED. COMPLETE ELECTRICAL FAILURE. A PROBLEM LOWERING THE LANDING GEAR RESULTED IN A GEAR UP LANDING CAUSING DAMAGE TO THE AIRCRAFT. SEE SDR AU000404 FOR ADDITIONAL INFORMATION.SDR CA000530038Bearing · disintegrated(CAN) LEFT GENERATOR TRIPPED OFF IN-FLIGHT AND WOULD NOT RESET. ON INSPECTION, FOUND GENERATOR FRONT BEARING UNSERVICEABLE. REMOVED GENERATOR AND REPLACED WITH O/H UNIT. VIBRATIONS FELT THROUGHOUT AIRCRAFT WHEN GEN TRIPPED OFF LINE.SDR DHL200080102Panel · defectiveON CLIMB, NR 1 ELECTRICAL BUSS FAILED AT 1000 FOOT AGL. FOUND NR 1 GEN CONTROL PANEL DEFECTIVE. REPLACED IAW MM 24-20-15.SDR CA000329042Alternator · shorted(CAN) SHORTLY AFTER TAKEOFF, THE AMMETERS WERE SHOWING A DISCHARGE AND VOLTAGE REGULATOR POPPED. ALTERNATOR FOUND TO BE SHORTED INTERNALLY.
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