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 YEWA20200910001Starter Gen · arcedDURING SCHEDULED INSPECTION OF STARTER/GENERATOR, WE FOUND A MOLTEN HOLE IN THE FAN COVER AT THE REAR OF THE GENERATOR. UPON REMOVING THE COVER, WE FOUND ONE OF THE BRUSH LEADS HAD SHORTED TO THE CASE, DAMAGING THE CASE AND THE LEAD. IT WAS ALSO NOTICED THATSDR 2020FA0000381Drive Belt · brokenWHILE INBOUND TO SNA THE AIRCRAFT RADIOS WENT DEAD AND THE BATTERY WENT DEAD. THE PILOT CONTACTED SNA TOWER USING HIS CELL PHONE AND WAS CLEARED TO LAND. AFTER LANDING IT WAS DISCOVERED THE ALTERNATOR DRIVE BELT FAILED AND THE AIRCRAFT WAS RUNNING ON BATTERY SDR 2020FA0000338Alternator · burnedLOW VOLTAGE LIGHT ILLUMINATED. 30 SECONDS LATER A STRONG ELECTRICAL BURNING SMELL CAME FROM BEHIND THE PANEL FOLLOWED BY A VERY SMALL AMOUNT OF SMOKE. RAN ELECTRICAL FIRE IN FLIGHT CHECKLIST AND LANDED 10 MINUTES LATER IN CHEFORNAK AND CALLED MX CONTROL TO REPSDR 2020FA0000027Bearing · failedDURING ANNUAL INSPECTION I PERFORMED ALTERNATOR INSPECTION REQUIRED BY PLANEPOWER.
PLANEPOWER'S MAINTENANCE INSTRUCTIONS ANNUAL / 100 HOUR INSPECTIONS:
1. REMOVE DRIVE BELT AND TURN ALTERNATOR ROTOR TO CHECK CONDITION OF BEARINGS FOR ABNORMAL NOISE OR ROSDR 2019FA0000246Bracket · damagedALTERNATOR ATTACHMENT BRACKET MOUNTING HOLES ELONGATED CAUSING THE ALTERNATOR FAN/FLYWHEEL TO GRIND AGAINST THE ALTERNATOR ATTACHMENT BRACKET LEADING TO ALTERNATOR FAILURE. THIS ENGINE WAS RECENTLY OVERHAULED AND HAD ONLY 80 HOURS SINCE OVERHAUL. THE FRONT BUSSDR YV3R2019071800141Alternator · defectiveCUSTOMER REPORTED ALTERNATOR ASSEMBLY P/N: D748-1R IS DEFECTIVE.SDR 2019FA0000211Alternator · failedWHILE IN FLIGHT THE SMELL OF BURNING ELECTRONICS WAS APPARENT IN THE CABIN. ALTERNATOR WAS TURNED OFF. ALL UNNECESSARY ELECTRONIC CIRCUITS WERE SHUT OFF USING THE ASSOCIATED CIRCUIT BREAKERS. THE FLIGHT WAS CONTINUED TO TOWARDS ITS DESTINATION WHICH WAS ABOUT SDR CA190617028Generator · overheated(CAN) CREW WAS TAXIING TO A RUNWAY WAS INFORMED TO TAXI TO A DIFFERENT RUNWAY. IN THE PROCESS OF HEADING FOR THIS DIFFERENT RUNWAY CREW REPORTED THAT THE BOTH COPILOTS DISPLAYS WENT BLANK WITH THE R MAIN BUS FAIL CAS AND R AUX BUS FAIL CAS POSTED ALONG WITH ANSDR 2020FA0000109Shaft · brokenALTERNATOR WAS INSTALLED ON ENGINE. ENGINE INSTALLED IN ACFT ON 3/1/2017 ACFT TT 5410.1 SHAFT IN ALTERNATOR BROKEN, REMOVED 6/12/2019 ACFT TT5740.9 TIME IN SERVICE 330.8 HOURS.SDR YV3R2019012200113Alternator · defectiveCUSTOMER REPORTED ALTERNATOR ASSEMBLY P/N: D748-6 HAS AN INTERNAL SHORT/OPEN CIRCUIT.SDR YV3R2019060622111Alternator · inoperativeCUSTOMER REPORTED ALTERNATOR WAS NOT PRODUCING CHARGING CURRENT.SDR YV3R2019052900097Alternator · inoperativeCUSTOMER REPORTED ALTERNATOR ASSEMBLY P/N: D748-6 HAS NO CURRENT OUTPUT.SDR CA190617021Alternator · inoperative(CAN) ALTERNATOR FOUND TO BE INOPERATIVE DURING PRE-FLIGHT GROUND RUN. ALTERNATOR REPLACED WITH OVERHAULED UNIT. (TC# 20190617021)SDR CA190513022Alternator · malfunctioned(CAN) PILOT REPORTED AMMETER SHOWING DISCHARGE, INSPECTED ALTERNATOR AND FOUND THAT WITH FIELD POWER APPLIED ALTERNATOR NOT GRABBING - REMOVED ALTERNATOR AND BENCH CHECKED FOUND NOT CHARGING, DISASSEMBLED ALTERNATOR AND FOUND FIELD BRUSH WIRE BROKEN OFF, (I AMSDR CA190424026Alternator · inoperative(CAN) ALTERNATOR LIGHT ILLUMINATED IN FLIGHT. THE ALTERNATOR WAS REPLACED FOR A THIRD TIME DUE TO THIS WARNING LIGHT ILLUMINATION. A SERVICEABLE (USED) ALTERNATOR WAS INSTALLED THIS TIME. THE ALTERNATOR HAS NOW FUNCTIONED NORMALLY FOR THE 4.3 HOURS FLOWN SINCESDR CA190422020Alternator · inoperative(CAN) DURING THE PREVIOUS FLIGHT THE ALTERNATOR LIGHT ILLUMINATED 3 TIMES AND WAS SUCCESSFULLY RESET EACH TIME. UPON THE 4TH OCCURRENCE THE HELICOPTER RETURN TO THE HANGAR. THE ALTERNATOR CONTROL UNIT AND THE ALTERNATOR SWITCH WERE REPLACED. A SUCCESSFUL GROUNSDR CA190422019Alternator · inoperative(CAN) PRIOR TO DEPARTURE/LIFT OFF THE ALTERNATOR LIGHT CAME. THE FLIGHT WAS CANCELLED. THE ALTERNATOR WAS REPLACED WITH A NEW UNIT. THE SYSTEM WAS GROUND TESTED AND FOUND TO OPERATE CORRECTLY. (TC# 20190422019)SDR CA190404007Alternator · failed(CAN) OVERHAULED ALTERNATOR WITH LESS THAN 250 HRS TSOH. PILOT REPORTED DISCHARGE AT LOW RPM AND WAS CONFIRMED WITH GROUND RUN. RECOMMENDED OVERHAUL IS 2500 HRS.SDR CA190418005Tube · cracked(CAN) THIS NEW ALTERNATOR CAME EQUIPPED WITH A BLAST TUBE BOLTED TO THE REAR OF THE ALTERNATOR HOUSING FOR DYNAMIC AIR FLOW COOLING OF THE UNIT. THE BLAST TUBE WAS FOUND CRACKED OFF ITS MOUNTS IN ALL 3 LOCATIONS. IT HAD FALLEN DOWN AND WAS RESTING ON THE INTAKSDR ENHA618DAlternator · seizedALTERNATOR FAILURE IN FLIGHT, PILOT MADE A PRECAUTIONARY LANDING AT PRIVATE AIRSTRIP DUE TO A BURNING SMELL IN THE CABIN. UPON INSPECTION MAINTENANCE, PERSONNEL FOUND THE ALTERNATOR HAD SEIZED, AND THE BURNING SMELL WAS FROM THE BELT SLIPPING ON THE SEIZED PULSDR CA190201017Alternator · inoperative(CAN) AT CRUISE RETURNING TO BASE CREW NOTICED ALTERNATOR DROPPED OFF. CREW CHECKED SWITCH AND CIRCUIT BREAKER. CHECKED OK. ON FINAL INTO CYBW INTERMITTENT FLAPS, RADIO AND LIGHT FAILURES. UPON INVESTIGATION AND INSPECTION THE POWER TERMINAL TO THE ALTERNATOR SDR EPUA20181002001Alternator · faultyPILOT REPORTS ELECTRICAL DISCHARGE IN FLIGHT AND SLIGHT BURNING SMELL IN COCKPIT. MAINTENANCE REPLACED FAULTY ALTERNATOR AND OPERATIONAL CHECK GOOD.SDR CA180912004Generator · distorted(CAN) DC GENERATOR FAN DEPARTED . FOUND DAMAGED, DISTORTED.SDR Q5QA2018070605Alternator · defectivePILOT REPORTED LT ALTERNATOR WAS INTERMITTENT (INDICATOR LIGHT WAS FLASHING). INSPECTION DISCLOSED A CRACKED SOLDER JOINT ON THE ALTERNATOR AT THE BASE OF THE A+ OUTPUT TERMINAL.SDR O9IA2018041800001Generator · failedAFTER LEVELING OFF AT CRUISE ALTITUDE AFTER ABOUT 5-10 MINUTES THE RT GENERATOR CAUTION LIGHT ILLUMINATED. PILOT NOTED THAT THEY HAD LOST THE RT GENERATOR. RT GENERATOR WOULD NOT RESET AFTER RUNNING THE CHECKLIST. THE LT GENERATOR WAS THEN NOTED TO BE OFFSDR EPUA20180220001Alternator · failedPILOT REPORTS A BURNING PLASTIC ODOR FOLLOWED BY LOW VOLTAGE LIGHT. MAINTENANCE INSPECTED THE AIRCRAFT AND DETERMINED THAT THE ALTERNATOR HAD FAILED AND HAD A DEFINITE BURNED ODOR EMANATING FROM THE ALTERNATOR ITSELF. THE ALTERNATOR WAS REPLACED AND NO FURTHSDR SWAA2018010218707Control Unit · faultyDECLARED EMERGENCY, ON DESCENT LOST STANDBY POWER. R&R STANDBY POWER CONTROL UNIT PER AMM.SDR 2017FA0000602Alternator · failedPILOT DISCOVERED ALTERNATOR HAD FAILED DURING FLIGHT. THE BATTERY WAS QUICKLY DEPLETED AND PILOT MANUALLY EXTENDED GEAR. THE RIGHT MAIN SLOWLY RETRACTED ON LANDING ROLLOUT.SDR 2018FA0000181Bearing · failedLEFT ALTERNATOR END CAP BEARING FAILED AND STARTED TO COME OUT OF THE CASTING. REPAIRED THE ALTERNATOR.SDR QXEA2017081500518Generator · malfunctionedAFTER TAKEOFF, INTERMITTENT CAUTION LIGHT FLICKERED ON AND OFF. WOULDN'T STAY ON LONG ENOUGH TO IDENTIFY. FINALLY IDENTIFIED AS NR 2 DC GENERATOR. AND WOULD BRIEFLY ILLUMINATE EVERY MINUTE THEN IMMEDIATELY GO OUT. THEN BECAME EVERY SECOND. RAN NR 2 DC GEN SDR 2017FA0000349Alternator · failedTHE ALTERNATOR WAS INSTALLED AND PRODUCED A TOTAL MECHANICAL FAILURE WITH ONLY 144.7 HOURS. REPLACED THAT UNIT, WHICH ALSO PRODUCED A TOTAL MECHANICAL FAILURE WITH ONLY 41.8 HOURS. OBSERVATION SUGGESTS THAT THE ALTERNATOR CASE HARDWARE WAS NOT PROPERLY TORQSDR AALA201706089008Generator · leakingODOR IN COCKPIT. FOUND APU GENERATOR LEAKING. REPLACED APU GEN IAW AMM 24-23-51. LEAK AND OPS CHECKED GOOD. AIRCRAFT WAS GROUNDED.SDR 2017FA0000335Alternator · failedNOTICED HEAVY ELECTRICAL SMELL COMING FROM ALTERNATOR, FOUND BEARING SEIZING UP.SDR 2017FA0000333Alternator · failedLEFT HAND ALTERNATOR OPERATION INTERMITTENT AFTER INSPECTION CHECK RUN, FOUND ALTERNATOR STARTING TO SEIZE UP WITH DAMAGE TO CLUTCH ASSEMBLY.SDR 2017FA0000332Alternator · failedNEW ALTERNATOR BEARINGS SEIZED AND SHEARED SHAFT. THIS IS ONE OF THREE WITH UNDER 300 HOURS SINCE NEW.SDR 2017FA0000040Alternator · shortedAIRCRAFT EXPERIENCED A FAILURE OF THE LEFT ALTERNATOR IN FLIGHT THAT RESULTED IN SMOKE COMING FROM THE COWL. AIRCRAFT LANDED SAFELY AND UPON INSPECTION FOUND THAT THE ALTERNATOR WOULD NOT TURN WHEN TURNING THE PROPELLER. UPON REMOVAL OF THE ALTERNATOR FROM THESDR 2016FA0000565Generator · failedGENERATOR FAILED DURING TAXI, VIBRATION FELT AND LOSS OF ELECTRICAL GENERATION FROM NR 1 GENERATOR. PILOT INITIATED ENGINE SHUT-DOWN AND SUBSEQUENT VISUAL INSPECTION SHOWED HEAT DAMAGE AND PAINT BLISTER ON LOWER COWLING. FURTHER INSPECTION SHOWED SIGNIFICANT HSDR 3SVA201611090001Alternator · failedDURING CRUISE THE RT ALTERNATOR FAILED AND THE PILOT RETURNED TO BASE.SDR ASMF201610005Static Inverter · failedCAPTAIN REPORTED THAT DURING TAXING TO PLATFORM, THE ELEC LIGHT TURNED ON. MAINTENANCE PERSONNEL PERFORMED ELECTRIC SYSTEM AUTO TEST IAW FIM 24-31 TASK 801 PROCEDURE, DETECTING THE STATIC INVERTER WITH FAILURE; SO THE STATIC INVERTER WAS REPLACED IAW AMM 24-34SDR HALA2016042100117Transformer · malfunctionedAIR DIVERSION, ENROUTE-ON SD PAGE TR2 APPEARED IN AMBER. SDAC 1 AND 2 RESET IAW MCC UNSAT. R & R TR2 IAW MM 24-32-51. MSG CLEARED. OK FOR SERVICE.SDR EPUA20160409001Alternator · meltedBURNT RUBBER SMELL FROM ENGINE COMPARTMENT. MX DETERMINED THAT THE ALTERNATOR WIRING HAD MELTED AT THE OUTPUT TERMINAL. THE ALTERNATOR & VOLTAGE REGULATOR REQUIRED REPLACEMENT IN ORDER TO RETURN THE AIRCRAFT TO SERVICE.SDR 2016FA0000168Rotor Shaft · wornDURING A PHASE NR 2 INSPECTION TECH NOTED BROWN DUST COMING OUT OF NR 2 ALTERNATOR FAN AREA. WHEN ALTERNATOR WAS DISASSEMBLED FOR INSPECTION, DISCOVERED WEAR ON ROTOR SHAFT WHERE IT RIDES ON DRIVE END BEARING. BEARING WAS FREE TO ROTATE AND NO EXCESSIVE DRAGSDR 2016FA0000164Bolt · brokenALTERNATOR NR 1 FAILED DURING A TRAINING FLIGHT. MAINTENANCE TECH NOTED A BROKEN ALTERNATOR CASE BOLT. THE CASE HALVES LOOSENED WHICH THEN CAUSED MORE DAMAGE WHEN THE ROTOR RUBBED THE STATOR, ALTERNATOR ES-4024LP.SDR 2016FA0000120Bolt · brokenDURING A PHASE 2 INSPECTION, THE TECH NOTED A BROKEN ALTERNATOR CASE BOLT. THE CASE HALVES HAD NOT LOOSENED UP AND NO FURTHER DAMAGE TO ALTERNATOR WAS NOTED. ALL THE CASE BOLTS WERE REPLACED WITH NEW. ALTERNATOR ES-4024LP.SDR 2016FA0000119Bolt · brokenDURING A PHASE 2 INSPECTION, TECH NOTED A BROKEN ALTERNATOR CASE BOLT. THE CASE HALVES HAD NOT LOOSENED UP AND NO FURTHER DAMAGE TO ALTERNATOR WAS NOTED. ALL THE CASE BOLTS WERE REPLACED WITH NEW. ALTERNATOR ES-4024LP.SDR CG9S2016022400096Alternator · damagedDURING A TRAINING FLIGHT, IT WAS NOTED THE NR 2 ALTERNATOR WAS NOT FUNCTIONING. TROUBLESHOOTING BY MAINTENANCE DISCOVERED THE NUT FOR THE STATOR TERMINAL WAS MISSING AND THIS ALLOWED THE BOLT TO MIGRATE INTO THE CORE OF ALTERNATOR WHERE IT WAS CHEWED UP BY THSDR CG9S2016022600097Alternator · inoperativeDURING A TRAINING FLIGHT, IT WAS NOTED THE NR 2 ALTERNATOR WAS NOT FUNCTIONING. INVESTIGATION BY MAINTENANCE DISCOVERED THE FIELD WAS OPEN ON ALTERNATOR. DURING REPLACEMENT IT WAS NOTED THE COOLING FAN AREA WAS COVERED WITH A DUSTING OF BRASS, COPPER COLOREDSDR HYIA20160205002Alternator · failedPILOT REPORTED LOSING BOTH ALTERNATORS IN FLIGHT AFTER A MODERATE JOLT OF TURBULENCE, RETURNED WHEN THEY COULD ONLY RESET ONE ALTERNATOR BY FOLLOWING THE QRH PROCEDURE OF REPLACING FIELD FUSES. INSPECTED & REPAIRED SHORTED F1 WIRE IN RT NACELLE, AS WELL AS RESDR CALA2016012800075Control Unit · failedCIRCUIT BREAKER STBY BUS SECT 1 POPPED, SLIGHT SMOKE & ODOR LOST DU 1 - 3 EEC`S BOTH WENT TO AL, YAW DAMPER INFO, NR 1 COMM & NAV RADIOS INOPERATIVE. REVERSER NR 1 DID NOT DEPLOY ON LANDING. R & R SPCU IAW AMM 24-34-11-400-801. PERFORMED OPERATIONS CHECK ONSDR EPUA2016012016001Alternator · malfunctionedDURING FLIGHT PILOT SMELLED A BURNING PLASTIC SMELL IN CABIN. PILOT TURNED OFF ELEC SYS & SMELL WENT AWAY. UPON TURNING ELEC BACK ON, AMMETER SHOWED DISCHARGE & ALTERNATOR WOULD NOT COME BACK ONLINE. INSPECTED WIRING HARNESS & REPLACED RING TERMINALS ON ALT
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