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 HEEA0015362Control Unit · failedNR 2 GENERATOR INOPERATIVE.SDR 98ZZZX3014Ring Terminal · crackedON AN EMPTY LEG OF A PART 135 FLIGHT, PILOT NOTICED CHARGING SYSTEM VOLTAGE IN RED WITH FULL LOAD ON CHARGING SYSTEM. PILOT DECREASED LOAD TO GET VOLTAGE BACK IN GREEN, AND RETURNED TO BASE. SUBSEQUENT INVESTIGATION REVEALED THE RING TERMINAL ON RIGHT ALTERNSDR 98ZZZX2803Alternator · crackedFRONT HOUSING CRACKED (ON MOLD MARKS) BEHIND COOLING FAN. ALUMINUM CASTING CRACKED .8750 INCH AROUND THE ALTERNATOR WITH ONLY ONE SUPPORT LEFT SUSTAINING DRIVE PULLEY AND COOLING FAN. CRACK FOLLOWED CASTING SEAM AROUND THE CIRCUMFERENCE.SDR 98ZZZX3071Alternator · failedALTERNATOR FAILED IN 45 DAYS AND 94 HOURS TIS. ELECROSYSTEM OVH UIT.SDR 98ZZZX3069Alternator · failedALTERNATOR FAILED AFTER 30 DAYS AND 54 HOURS TIS. (ELECTROSYSTEMS OVH UNIT).SDR 98ZZZX3068Alternator · failedALTERNATOR FAILED OUT OF THE SHIPPING BOX. (ELECTROSYSTEMS OVH UNIT).SDR 98ZZZX3013Alternator · failedALTERNATOR FAILED DUE TO OLD AGE.SDR 98ZZZX3219Alternator · failedALTERNATOR FAILED IN 10 DAYS, 30 HOURS TIME IN SERVICE.SDR 98ZZZX2801Alternator · failedREMOVED ALTERNATOR AT ENGINE CHANGE. FOUND SHAFT BEARINGS FAILED (DRIVE END), .1250 INCH MOVEMENT SIDE TO SIDE. UP AND DOWN. TIME IN SERVICE 215 HOURS. REMOVED JUST PRIOR TO FAILURE AND ENGINE DAMAGE. (ELECTRO SYSTEMS O/H UNIT).SDR EISA98178Generator · malfunctionedDURING CRUISE FLIGHT, CREW NOTICED ALL LIGHTS IN COCKPIT, RADAR SCREEN, AND GPS SCREEN WOULD FLASH ON AND OFF EVERY FEW MINUTES. KILOWATTS ON THE NR 1 WOULD SPIKE TO 25 TO 30 KILOWATTS. NR 2 GENERATOR WOULD DO THE SAME THING. BTB ILLUMINATED. COULD NOT BRISDR 98ZZZX2878Generator · malfunctionedDURING CRUISE FLIGHT, CREW NOTICED ALL LIGHTS IN COCKPIT, RADAR SCREEN, AND GPS SCREEN WOULD FLASH ON AND OFF EVERY FEW MINUTES. KILOWATTS ON THE NR 1 WOULD SPIKE TO 25 TO 30 KILOWATTS. NR 2 GENERATOR WOULD DO THE SAME THING. BTB ILLUMINATED. COULD NOT BRISDR 98ZZZX2644Alternator · failedALTERNATOR INOPERATIVE. WINDINGS SHOW OPEN CIRCUIT.SDR HEEA0014871Armature · mismanufacturedARMATURE WILL NOT FIT IN STATOR ASSY. IT HITS FIELD SHOES (I.D. IS TOO SMALL.)SDR 98ZZZX3175Pulley · failedPILOT REPORTED THE RT ENGINE ALTERNATOR WAS NOT CHARGING. INSPECTION REVEALED THE ALTERNATOR AND AIR CONDITIONING COMPRESSOR BELTS WERE SHREDDED AND BROKEN. FURTHER INSPECTION REVEALED THE KEYWAY ON THE ALTERNATOR PULLEY HAD STRIPPED ALLOWING THE PULLEY TO MSDR 98ZZZX2461Alternator · shortedALTERNATOR FAILED DUE TO BATTERY AND GROUND WIRE TERMINALS BREAKING OFF AND SHORTING TO ALTERNATOR. SUBMITTER STATED TERMINALS WEAK. MATERIAL TOO THIN FOR GAUGE OF WIRE.SDR AU980700Alternator · failed(AUS) ALTERNATOR ROTOR FAILED. SUSPECT CAUSED BY CONTINUAL TURNING OFF OF THE ALTERNATOR DURING SURVEY OPERATIONS. SEE MDR 98/0701 FOR SIMILAR DEFECT. AIRCRAFT IS USA REGISTERED N6763R.SDR 98ZZZX2355Alternator · failedAIRCRAFT EXPERIENCED AN ELECRICAL SYSTEM FAILURE. TROUBLESHOT SYSTEM, FOUND ALTERNATOR DEFECTIVE. REPLACED ALTERNATOR, CHARGED BATTERY. SYSTEM OPERATES NORMALLY.SDR 98ZZZX2129Alternator · failedAIRCRAFT LOST ALL ELECTRICAL POWER IN-FLIGHT. EMERGENCY LANDING MADE. MAINTENANCE FOUND BOTH FIELD FUSES BLOWN. INSPECTION OF ACFT REVEALED FOLLOWING: RT ALTERNATOR WAS MISSING COOLING FAN. ONE REGULATOR ONLY 26.5 VOLT OUTPUT. RT ALTERNATOR OUTPUT TERMINSDR AU980701Alternator · failed(AUS) RIGHT ALTERNATOR FAILED. INVESTIGATION FOUND THE ROTOR HALF SECURING SCREWS MISSING OR WITH STRIPPED THREADS. THE UNBALANCED ROTOR THEN WORE THE ROTOR SHAFT UNTIL THE DRIVING GEAR CAME OUT OF MESH AND DAMAGED THE DRIVE CHAIN AND REDUCTION GEARBOX. SEESDR CA980519023Terminal · broken(CAN) DURING FLIGHT, THE TRANSPONDER AND THE RADIO BECAME WEAK. AMP TERMINAL AT THE ALTERNATOR STUD BROKEN. REPLACED.SDR CA980512005Brush · failed(CAN) DURING FLIGHT, ALL RADIOS FUNCTIONING OK AND THEN MODE 'C' NOT PUTTING OUT SHORTLY AFTER VOLTMETER DROPPED AND LORAN WENT DEAD. COULD NOT TRANSMIT. RADAR ALERT PATTERNS WERE FLOWN. AIRCRAFT THEN LANDED OK. FOUND THE PIGTAIL LEAD ON ONE GENERATOR BRUSSDR 98ZZZX2053Alternator · shortedPILOT REPORTED BOTH ALTERNATORS FAILED. PILOT TRIED AUXILIARY REGULATOR, ALTERNATOR CAME ON-LINE FOR SHORT TIME, THEN FAILED. INVESTIGATION REVEALED THE FIELD OF THE RT GENERATOR WAS INTERMITTENTLY SHORTING TO GROUND. SUBMITTER SUSPECTED INSULATION BREAKDOWSDR AU980707Alternator · improper part(AUS) INCORRECT ALTERNATOR FITTED. PERSONNEL/MAINTENANCE ERROR. UNAPPROVED PART.SDR COMA9810081Generator · failedUNUSUAL AND STRONG VIBRATION BETWEEN 12,500 AND 13,000 FEET. INSPECTED AIRCRAFT FOR CAUSE OF VIBRATION AND FOUND NO DEFECTS. REPLACED LT ENGINE AUX GENERATOR FOR TROUBLE SHOOTING.SDR CA980406038Bolt · broken(CAN) DURING ANNUAL INSPECTION IT WAS FOUND THAT ONE ALTERNATOR THROUGH BOLT HAD BROKEN OFF PART WAY UP THE THREAD AREA JUST OUTSIDE OF THE END FRAME CASTING. THIS SAME ALTERNATOR HAD ANOTHER BOLT FAIL AT APPROXIMATELY 10 HOURS. BOLTS REPLACED WITH OEM STOCK.SDR 98ZZZX1294Alternator · failedALTERNATOR FAILED IN-FLIGHT. TEAR DOWN FOUND STATOR CHAFED AGAINST ROTOR DUE TO WRONG HOUSING BEING INSTALLED.SDR 98ZZZX1114Alternator · failedOVERHAULED ALTERNATOR FROM ELECTROSYSTEMS FAILED 3 HOURS INTO FIRST FLIGHT AFTER INSTALLING. (INTERNAL FAILURE).SDR PNSA980303Alternator · intermittentLOW BATTERY, ENGINE WOULD NOT START. REPLACED INTERMITTENT ALTERNATOR, OPS CHECK OK.SDR AU980541Wire · broken(AUS) ALTERNATOR FIELD WIRE BROKEN.SDR HEEA0013322Generator · failedGENERATOR FAILED.SDR REXA98060Generator · failedIN-FLIGHT, AMMETER SHOWED 150-200 AMPS ON LEFT SIDE AND ZERO - 10 AMPS ON RIGHT. REMOVED AND REPLACED RIGHT HAND DC GENERATOR. GENERATORS PARALLELED. OK FOR SERVICE. (X)SDR 98ZZZX1126Alternator · failedALTERNATOR FAILED AFTER 2 MINUTES OF OPERATION. FOUND OPEN FIELD CIRCUIT. FOUND RED SILICONE SEALANT TYPE MATERIAL AROUND BRUSH HOLDER PREVENTING BRUSH SEATING ON SLIP RING. CAME FROM OVERHAUL THIS WAY.SDR 98ZZZX890Alternator · failedALTERNATOR WAS OVERHAULED BY ELECTROSYSTEMS, FAILED AFTER 177 HOURS. ON INSPECTION, FOUND 2 DIODE TABS CRACKED AND ARCING DIODES OBVIOUSLY NOT REPLACED AT OVERHAUL. SUBMITTER STATED THIS IS SECOND ELECTROSYSTEMS ALTERNATOR THAT FAILED AFTER VERY SHORT SERVISDR HEEA0012898Generator · failedGENERATOR CAUSING HIGH FREQUENCY VIBRATIONS; APPEARS TO BE BENT.SDR 98ZZZX810Alternator · seizedORIGINAL ALTERNATOR REPLACED AT THE FACTORY AFTER FACTORY FLIGHT TEST WAS COMPLETED DUE TO SUSPECTED UNDERSIZE WIRE PROBLEM. POST-FLIGHT INSPECTION AFTER 9:25 HOURS FERRYING FLIGHT HOME AND COOL DOWN FOUND THE ALTERNATOR FROZE AND POWDERED RUBBER STREAKS ON TSDR 98ZZZX706Alternator · failedOVERHAULED ALTERNATOR FROM ELECTRO SYSTEMS WAS 166.3 HRS SINCE O/H 10-10-96. NO OUTPUT. SUBMITTER STATED SHORT SERVICE LIFE FROM THESE UNITS.SDR HEEA0012635Armature · failedBEARING FAILURE, ARMATURE SHORTED.SDR 98ZZZX469Alternator · malfunctionALTERNATOR CAUSING STATIC IN RADIOS. REPLACED, NOISE GONE.SDR 98ZZZX354Alternator · failedALTERNATOR QUIT WORKING. FOUND BRUSHES TOTALLY WORN OUT.SDR 98ZZZX352Alternator · failedALTERNATOR FAILED. FOUND BRUSHES COMPLETELY WORN OUT.SDR 98ZZZX350Alternator · failedALTERNATOR FAILED. FOUND BRUSHES COMPLETELY WORN OUT.SDR 98ZZZX553Alternator · failedALTERNATOR WAS OVERHAULED BY ELECTROSYSTEMS, INC. AFTER FAILURE, UNIT WAS OPENED AND ONE BRUSH WAS FOUND WORN COMPLETELY DOWN TO WIRE INSERT. SLIP RING WAS GROOVED DUE TO CONTACT WITH INSERT. ALTERNATOR HAD ONLY 341.8 HOURS SINCE OVERHAUL AND ONLY 8 MONTHS.SDR CA971231010Generator · failed(CAN) RIGHT HAND GENERATOR FAILED IN CRUISE. FIELD COIL FOUND OPEN.SDR 98ZZZM145Ecu · failedHNL - FLT NR 4 - IN CRUISE FLIGHT, NR 1 GEN OFF LIGHT CAME ON. VOLT/FREQENCY ZERO. FOLLOWED ABNORMAL PROCEDURES AND RESET NR 1 GEN. VOLT/FREQS OK. 4 MINUTES LATER NR 1 GEN DROPPED OFF LINE AGAIN. FOUND NR 1 DC BUS TIE RCCB CLOSED, REPLACED RCCB AND NR 1 SDR 98ZZZX50Alternator · failedALTERNATOR FAILED. FOUND BRUSHES COMPLETELY WORN OUT IN JUST 608 HOURS. SUBMITTER STATED THIS IS THE SECOND ALTERNATOR FAILURE WITHIN 700 HOURS.SDR 98ZZZX2687Generator · failedPARTS 530412 NUT, 2.531325 GEAR 530407, SLEEVE 4.632050 BUSHING 352030 RETAINER. THESE COMPONENTS FAILED CAUSING THE GENERATOR SHAFT TO FAIL. THE PARTS WERE CHEWED UP BY THE CAMSHAFT GEAR AND METAL CONTAMINATED THE OIL SYSTEM. THE ACCESSORY CASE WAS ALSO DASDR CA971031006Fan · sheared(CAN) VIBRATION FROM NR1 ENGINE. AIRCRAFT NR1 GENERATING CIRCUIT (DC) FAILED. FOUND NR1 GENERATOR COOLING FAN SHEARED OFF OF MOUNTING SHAFT.SDR 98ZZZX695Alternator · shortingSUBMITTER HAS FOUND 2 FAULTY ALTERNATORS BACK-TO-BACK WITH THE SAME PROBLEM. THE FIELD WIRE SOLDERED CONNECTIONS, POINTS A AND B, STAND UP OFF OF THE ROTOR TOO HIGH AND MOMENTARILY TOUCH CASE. THIS OCCURRENCE AT HIGH RPM ONLY CAUSES THE FIELD CIRCUIT BREAKERSDR 97ZZZX4642Alternator · failedSCREWS THAT RETAIN BEARING IN PULLEY END OF HOUSING BACKED OUT. THIS ALLOWED ENTIRE SHAFT PULLEY AND FAN TO SHIFT BACK IN HOUSING UNTIL FAN BLADES CONTACTED HOUSING. ONE BLADE SEPARATED FROM HOUSING AND MADE A HOLE IN COWLING. AIRCRAFT LANDED SAFELY. SMOH:SDR 97ZZZX4867Alternator · failedALTERNATOR FAILED IN IMC. AIRCRAFT WAS LANDED GEAR UP. SUBSTANTIAL DAMAGE. NO INJURIES. INSTALLED NEW ALTERNATOR. OPS CHECKED OK. FAILED ALTERNATOR OVERHAUL. ON 11-15-96. INSTALLED 5-19-97.
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