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 97ZZZX4555Alternator · weakINSTALLED JASCO ALTERNATOR KIT PER STC SA999WE. WOULD NOT CARRY TWO LANDING LIGHTS. REPLACED REGULATOR AND ALTERNATOR WIRE WAS DOUBLE-CHECKED AND WAS WIRED CORRECTLY. NEW UNIT WOULD NOT CARRY BOTH LANDING LIGHTS. REMOVED UNIT AND WILL OVERHAUL GENERATOR. SDR 97ZZZX4445Alternator · failedINSTALLED ELECTROSYSTEMS ALTERNATOR. PART FAILED 42 HOURS LATER. SUBMITTER STATED SERVICE LIFE OF OVERHAULED UNIT SHOULD BE SLIGHTLY BETTER THAN 42 HOURS.SDR REXA97260Dc Generator · failedRIGHT DC GENERATOR FAILED IN FLIGHT. REMOVED AND REPLACED RT ENGINE DC GENERATOR. (M)SDR AU971341Alternator · failed(AUS) ALTERNATOR FAILED. BATTERY WENT FLAT.SDR PNSA970813Generator · failedGENERATOR FAILED IN FLT. REPLACED GENERATOR, OPS CHECK OK.SDR 97ZZZX3863Hub · wornALTERNATOR HUB LOOSE ON WOODRUFF KEY AND WORE SHAFT TO .0312 INCH. STEP WEAR WAS EVIDENT BY MOVING FAN A FULL WINDOW.SDR 97ZZZX3498Cell · shortedAIRCRAFT BATTERY CHARGER DROPPING OFF-LINE. REMOVED AND SHIPPED BATTERY TO INSPECTION AND SERVICE. FOUND SHORTED CELL, STRAPS HAD BURNED SMALL HOLE THROUGH SIDE OF CELL. BATTERY WILL BE SHIPPED BACK TO MANUFACTURER DUE TO LOW TSN.SDR 97ZZZX3421Alternator · crackedTOTAL AIRCRAFT TIME 3,176.9 HOURS. DURING AN ANNUAL INSPECTION, THE ALTERNATOR FORWARD HOUSING WAS FOUND CRACKED AT THE WEB SUPPORTS. SUBMITTER SUGGESTS ALTERNATOR BE INSPECTED IN MORE DETAIL.SDR 97ZZZX3825Alternator · failedALTERNATOR FAILED IN-FLIGHT 33.0 HOURS AFTER OVERHAUL.SDR 97ZZZX3705Alternator · broken earDURING ANNUAL INSPECTION, FOUND FORWARD ALTERNATOR HOUSING BROKEN AT PIVOT BOLT EAR. INSPECTED INSTALLATION AND DETERMINED BELT TENSION TOO TIGHT. LYCOMING SI 1129A PERTAINS TO THIS SUBJECT. PROPER BELT TENSION IS PARTICULARLY CRITICAL ON LYCOMING ENGINES.SDR AU970809Generator · failed(AUS) LH AND RH ENGINE DRIVEN DC GENERATORS FAILED - LH AC BUS ALSO FAILED - SUSPECT CAUSED BY STATIC DISCHARGESDR 97ZZZX3169Alternator · defectiveAFTER ONLY 109 HOURS ON THE OVERHAULED ALTERNATOR, IT WOULD NOT FUNCTION PROPERLY (I.E., PARALLEL, SHARE THE LOAD, REMAIN ON-LINE). UPON REMOVAL OF THE BRUSHES, FOUND BURNED SLIP RINGS. UNIT REMOVED FOR WARRANTY CONSIDERATION AND 'NEW' EXHANGE UNIT INSTALLEDSDR 97ZZZX3157Alternator · failedALTERNATOR INSTALLED 3-31-97. FAILED 6-24-97. NO OUTPUT. OVERHAULED 2-28-97. SUBMITTER STATED CONTINUE TO GET SHORT SERVICE LIFE FROM AERO ELECTRIC ALTERNATORS.SDR AU970691Alternator · inoperative(AUS) ALTERNATOR EMERGENCY FIELD SYSTEM INOPERATIVE. SEE MDR 97/0682FOR ADDITIONAL INFORMATION.SDR RAIA970610Generator · failedSTL - FLT 7500 - NR 2 GENERATOR DROPPED OFF LINE IN-FLIGHT. REMOVED AND REPLACED GENERATOR. (X)SDR 97ZZZX3153Alternator · failedALTERNATOR FAILED AFTER 136.6 HOURS OF OPERATION. OVERHAULED 10-3-96. SUBMITTER STATED CONTINUE TO HAVE SHORT SERVICE LIFE ON THESE UNITS.SDR 97ZZZX2920Alternator · lug crackedALTERNATOR MOUNT LUG FOUND CRACKED, AND OIL LEAKING AT GASKET. ALTERNATOR HAS ONLY 197 HRS SINCE OVERHAUL. ON DISASSEMBLY, ONE LUG FOUND CRACKED AND ONE LUG FELL OFF COMPLETELY.SDR AU970849Bearing · collapsed(AUS) ALTERNATOR DRIVE END BEARING COLLAPSEDSDR AU970668Alternator · worn(AUS) ALTERNATOR BRUSHES WORN - SUSPECT CAUSED BY BRUSH BOUNCESDR AU970731Alternator · failed(AUS) LH ALTERNATOR FAILED - INSPECTION FOUND THAT THE FAILURE WAS DUE TO THE DIODE PLATE GROUND WIRE BEING LOOSESDR 97ZZZX2926Alternator · crackedFOUND ALTERNATOR HOUSING CRACKED AT THE FRONT MOUNTING ARM. AFTER INSPECTING LIKE AIRCRAFT, FOUND A SECOND ALTERNATOR CRACKED IN THE SAME LOCATION. THE SUSPECT CAUSE FOR THE CRACK IS INCORRECT SHIMMING OF THE ALTERNATOR TO THE MOUNT. SUBMITTER STATED CLOSE SDR REXA97127Generator · failedLEFT GENERATOR FAILED IN FLIGHT. REMOVED AND REPLACED LEFT GENERATOR AND MOUNTING POD. (M)SDR 97ZZZX1945Alternator · failedALTERNATOR FAILED AT 5-1/2 MONTHS AND 185.3 HRS TT. WAS OVERHAULED 9-19-96. CONTINUE TO HAVE VERY SHORT SERVICE LIFE OF THESE UNITS.SDR 97ZZZX1885Alternator · failedAFTER AN IN-FLIGHT ALTERNATOR FAILURE, FOUND THAT THE SHAFT HAD NO SUPPORT AND WOBBLED FREELY, THAT THE ALT GEAR P/N 640932 WAS CHEWED UP AND SO WAS THE DRIVE GEAR FROM THE CRANKSHAFT P/N 632018. ALSO, ONE EACH LOCKPLATE P/N 641909 WAS MISSING AS WELL AS THE SDR 97ZZZX1863Alternator · failedLEFT ALTERNATOR BECAME INTERMITTENT THEN DROPPED OFF LINE. RETURNED FLIGHT TO YUMA. UNIT HAD BEEN OVERHAULED 1-25-96.SDR 97ZZZX1928Alternator · failedALTERNATOR HAS NO OUTPUT. INSTALLED 164.4 HOURS AGO, 9-96. UNIT WAS RECENTLY OVERHAULED. SUBMITTER STATED SHORT SERVICE LIFE ON THESE UNITS.SDR 97ZZZX1746Clamp · brokenENGINE SHUT DOWN BY CREW (RT) DUE FIRE WARNING AND FLAME FROM JET PIPE. CREW ON TRAINING/CHK RIDE. A/C TAXI. ENG INSP NIL DAMAGE OBSERVED. BROKEN CLAMP NOTICED ON GENERATOR. THIS CLAMP SECURES FIRE THERMAL S/W AT FWD RT POSITION. S/W P/N 17343-61-350F. SDR 98ZZZX1128Alternator · failedPILOT EXPERIENCED ELECTRICAL SYSTEM FAILURE. MADE EMERGENCY LANDING WITHOUT INCIDENT. FOUND ALTERNATOR FAILED.SDR 97ZZZX1203Band · failedGENERATOR FAILURE WAS TRACED TO THE FAILURE OF BAND SECURING ROTOR WINDINGS. FAILED BAND WAS AN UNAPPROVED DESIGN. BAND WAS CONSTRUCTED OF SOLID PIECE RING. ORIGINAL DESIGN IS A LAYERED WRAPPING, THEN SPOT WELDED. MFG MANUAL STATED NO REPAIR OF BAND IS PERSDR 97ZZZX1218Alternator · shaft failedALTERNATOR QUIT WORKING. REMOVED, FOUND SHAFT THROUGH ROTOR ASSY WOULD TURN WITHOUT TURNING ROTOR. UNIT OVERHAULED 1-13-97.SDR 97ZZZX1204Hub Assy · failedALTERNATOR KEY (633342-10) FAILED CAUSING HUB ASSY TO SPIN ON ALTERNATOR SHAFT. THE RESULTS WERE EXCESSIVE WEAR TO ALTERNATOR SHAFT AND HUB ASSEMBLY. THERE WAS ALSO WEAR ON THE TEETH OF THE ALTERNATOR FACE GEAR.SDR AU970270Alternator · cracked(AUS) ALTERNATOR FRONT HOUSING CONTAINED FIVE CRACKS AROUND THE FLANGES - ON ENGINE STRIP DOWN (REFER MDR 97/0228) IT WAS FOUND THAT THE COUNTER WEIGHT ROLLERS ON THE CRANKSHAFT HAD EXCESSIVE WEAR AND THE ASSOCIATED VIBRATION IS SUSPECTED TO HAVE BEEN THE CAUSDR 97ZZZX1818Brush · wornBLACK STREAKS WERE NOTICED ON THE ENGINE COWLING BY MAINTENANCE PERSONNEL. FOUND THE DC GENERATOR TO HAVE PREMATURE BRUSH WEAR, WORN BEYOND LIMITS (NO WEAR MARK REMAINING - 100 PERCENT WORN).SDR AU970446Suppressor · separated(AUS) ALTERNATOR SUPPRESSOR SEPARATED FROM ALTERNATOR - SUPPRESSOR CONNECTING WIRE SHORT CIRCUITING ON EXHAUST SYSTEM CAUSING FAILURE OF VOLTAGE REGULATORSDR 97ZZZX1034Alternator · failedIN-FLIGHT EXPERIENCED LT AD/DC POWER FAILURE AND RETURNED TO KEWR. REMOVED AND REPLACED DEFECTIVE LT ALTERNATOR.SDR MALA975311Starter Gen · failedFLT 3002 - AFTER TAKEOFF, RIGHT GENERATOR FAILED. CREW USED QUICK REFERENCE HANDBOOK AND TRIED TO RESET. GENERATOR WOULD NOT COME ON LINE. AIRCRAFT RETURNED TO MSP. MAINTENANCE REMOVED AND REPLACED RIGHT STARTER GENERATOR AND RIGHT GCU. OPS CHECK GOOD. (SDR 97ZZZX1184Alternator · failedBOTH ELECTRICAL SYSTEMS FAILED IN-FLIGHT. RIGHT ALTERNATOR FAILED IN-FLIGHT. LEFT ALTERNATOR INOP LIGHT WAS NOT ILLUMINATED DUE TO A BROKEN WIRE ON THE LIGHT CONCEALING A FAILED LEFT ALTERNATOR. SUBMITTER RECOMMENDATION: ADD INSPECTION OF ALTERNATOR INOP ISDR 97ZZZX796Alternator · failedFORD ALTERNATOR FAILED IN-FLIGHT. A/C RAN OFF A/C BATTERY. MAINTENANCE INSTALLED OVERHAULED ALTERNATOR AND A/C WAS RETURNED TO SERVICE.SDR AU970072Housing · cracked(AUS) ALTERNATOR MAIN BEARING COLLAPSED AND OUTER HOUSING CRACKEDSDR 97ZZZX1179Alternator · failedPILOT LOST RADIO CONTACT AND DIVERTED TO ALTERNATE AIRPORT. INVESTIGATION REVEALED ELECTRICAL POWER LOSS DUE TO ALTERNATOR, ALTERNATOR SENSOR, AND ALTERNATOR BELT FAILURE.SDR S2YA960039Generator · malfunctionedFLT 1042 - MKE-IND - 15 MINUTES INTO FLT, THE LT DC GENERATOR FELL OFF LINE, THE FLIGHT CREW ATTEMPTED TO RESET IT, BUT IT FAILED TO COME BACK ON LINE. THE FLIGHT RETURNED BACK TO MKE AND LANDED WITHOUT INCIDENT, ONCE ON THE GROUND THE FLIGHT CREW ATTEMPTED TSDR 97ZZZX518Alternator · loose terminalALTERNATOR'S LOOSE CONNECTION CAUSED TERMINAL TO ARC AND BURN, AND DISCONNECT.SDR 96ZZZX6106Alternator · case crackedALTERNATOR REMOVED DUE TO DEFECTIVE DIODES, BUT ALSO FOUND CRACK IN CASE AT DRIVE END.SDR 97ZZZX2Spacer · mismanufacturedTHIS ALTERNATOR IS AN ELETROSYSTEMS NEW UNIT. THE O-RING GROOVE WAS MACHINED INCORRECTLY ON THE ALU-23 SPACER ALLOWING ENGINE OIL TO LEAK PAST THE XA-744AZ O-RING AND CONTAMINATING THE X-4087 DRIVE END BEARING. THIS ALTERNATOR WAS REMOVED FOR A 500-HOUR BEARSDR GLBA96212Starter/Gen · failedMYR - RIGHT GENERATOR FAILED INFLIGHT. MAINTENANCE REMOVED AND REPLACED THE RIGHT ENGINE STARTER/GEN. (M)SDR 96ZZZX5492Alternator · failedFAILURE DURING IFR CONDITIONS. OPS CHECK AFTER LANDING SHOWED NORMAL VOLTAGE AND CHARGING RATE. SECOND FAILURE IN IFR AND A/C LANDED. OPS CHECK SHOWED ERRATIC VOLTAGE AND HIGH CHARGE RATE. A/C FERRIED IFR TO REPAIR FACILITY 10 MINUTES AWAY WITH ALT ON LINESDR 96ZZZX5488Brush · failedRIGHT ENGINE ALTERNATOR FAILED DURING FLIGHT. WHEN ALTERNATOR FAILED, IT ALSO DAMAGED MAIN VOLTAGE REGULATOR. THE ALTERNATOR WAS OVERHAULED BY AERO ELECTRIC, INC., ON 11-17-94, AND INSTALLED ON 11-28-94. IT APPEARS ONE BRUSH FAILED AND GOUGED THE ROTOR.SDR CA960927007Alternator · broken drive(CAN) THE ALTERNATOR FAILED IN FLIGHT AND GROUND INSPECTION REVEALED THE DRIVE SHAFT HAD SHEARED.SDR 97ZZZX278Alternator · defectiveALTERNATOR FALLING APART AFTER 95 HRS IN SERVICE. PART OVERHAULED BY ELECTROSYSTEMS. CERTIFICATE NR UT2R226L.SDR 96ZZZX5008Alternator · failedALTERNATOR FAILED ON TAKEOFF. IFR ALTERNATOR HAD OVER 1,000 HOURS SINCE REBUILD. AVERAGE TIME FOR ACCESSORIES IS ABOUT 1,000 HOURS. IFR AIRCRAFT ESPECIALLY SHOULD BE CAREFULLY LOOKED AT IN REGARDS TO ACCESSORY TIMES.
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