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 AU990404Wire · broken(AUS) ALTERNATOR FIELD WIRE BROKEN ON AIRCRAFT SIDE OF THE ALTERNATOR CONTROL UNIT CONNECTOR. BATTERY DISCHARGED CAUSING A TOTAL ELECTRICAL FAILURE.SDR 99ZZZX2413Mount · brokenFOUND ALTERNATOR BRACKET BROKE AT THE UPPER PIVOT. APPEARED TO BE A BAD WELD, NO PENETRATION OF WELD BEAD INTO BASE MATERIAL.SDR 99ZZZX2412Mount · brokenFOUND BOLT SHEARED BELOW HEAD. SUBMITTER STATED THIS AIRCRAFT SERIAL NUMBER IS NOT INCLUDED IN THE RANGE OF THE DIAMOND SB ON THIS SUBJECT.SDR AU990398Gcu · faulty(AUS) NR 1 GENERATOR CONTROL UNIT (GCU) FAULTY.SDR HEEA061874Generator · malfunctionedGENERATOR WILL NOT HOLD VOLTAGE SETTING.SDR ERAA061868Nut · mismanufacturedNEW NUT WILL NOT STRETCH TIE BOLT.SDR 99ZZZX2712Brush · wornSUBMITTER STATED THIS IS THE SECOND INSTANCE OF FAILURE OF PMA'D BRUSHES FAILING TO GIVE SATISFACATORY TIME IN SERVICE. ONE BRUSH WAS WORN DOWN, SO NO SPRING TENSION WAS EXERTED TO BRUSH. LESS THAN 25 HOURS SINCE OVERHAUL. PREVIOUS CASE BRUSHES LASTED APPROSDR AU990317Bearing · failed(AUS) ALTERNATOR BEARING FAILURE. ALTERNATOR DAMAGED BEYOND REPAIR.SDR 99ZZZX1361Relay · brokenNR 1 GENERATOR WOULD FALL OFF-LINE WHEN A BUS LOAD WAS APPLIED. THE PROBLEM WAS ISOLATED TO THE NR 1 GENERATOR LINE CONTACTOR. WHEN REMOVED, TWO OF THE CONNECTING STUDS WERE BROKEN. THIS IS THE SECOND RELAY, SAME PART NUMBER, REMOVED FROM THIS AIRCRAFT THATSDR 99ZZZX1212Alternator · failedINSTALLED ALTERNATOR AND UNIT FAILED TO OPERATE. AFTER INSPECTION, CAUSE OF FAILURE WAS THE BRUSHES. DURING ASSEMBLY, SOMEONE HAD PUT SOME TYPE OF EPOXY ON BRUSHES TO HOLD THEM IN THE BRUSH HOLDER. THIS, IN EFFECT, KEPT THE BRUSHES FROM MAKING CONTACT.SDR MALA976387Generator · failedLEFT DC GEN OVERHEAD LIGHT ILLUMINATED WHILE IN FLIGHT, QRH PROCEDURE FOLLOWED. GEN WAS ABLE TO BE RESET BUT WITHIN 1 MINUTE TRIPPED AGAIN. AFTER ILLUMINATING FOR THE SECOND TIME THE LEFT GEN OVERTEMP LIGHT ILLUMINATED AND REMAINED ON. RETURNED TO DTW. MAISDR MALA976379Generator · failedLEFT DC GENERATOR OVERTEMP CAUTION LIGHT ILLUMINATED, PERFORMED QRH. RETURNED TO DTW. MAINTENANCE REPLACED LEFT DC GEN/STARTER. ALL CHECKS GOOD.SDR CA990401005Bearing · failed(CAN) ANTI-DRIVE END BEARING FAILURE CAUSING MAJOR DAMAGE TO ROTOR, EXCITER STATOR, AND MAIN STATOR. ALSO NOTED UNAPPROVED INSULATORS WERE INSTALLED (COMMERCIAL SLEEVING) INSTEAD OF THE CORRECT 5 INSULATORS P/N 22-200-026.SDR 99ZZZX1396Alternator · failedALTERNATOR OVERHAULED 5-21-98. INSTALLED 1-11-99. ONLY HAD 46.3 HOURS PRIOR TO FAILURE.SDR 99ZZZX1071Wire · separatedLOW VOLTAGE LIGHT CAME ON SEVERAL TIMES DURING FLIGHT. PERFORMED ENGINE RUN-UP FOR OPERATIONAL CHECK OF ALTERNATOR. ALTERNATOR CHECKS OUT GOOD. UPON FURTHER INSPECTION, THE 'GROUND' ALTERNATOR TERMINALS WERE FOUND BROKEN. THESE WIRE TERMINALS APPEAR TO BE SDR 99ZZZX1189Bracket · failedALTERNATOR SUPPORT BRACKET IS MADE WITH INSUFFICIENT WELD AT JOINTS. (NO PENETRATION). BRACKETS CRACK AT WELD JOINT.SDR 99ZZZX1018Bracket · misinstalledALTERNATOR LOWER ATTACH BOLT PULLED FROM BRACKET CAUSING LOSS OF BELT TENSION AND SUBSEQUENT BATTERY DRAIN AND INTERRUPTION OF RADIO CONTACT. BOLT HAD ONLY ENGAGED TWO OR THREE THREADS IN MOUNTING BRACKET BECAUSE OF TOO MANY WASHERS UNDER BOLT HEAD. WITHOUSDR 99ZZZX1067Alternator · failedLOST BOTH ALTERNATORS GOING INTO PORTLAND, MAINE. FOUND LEFT ALTERNATOR SHORTED CAUSING RT ALTERNATOR TO KICK OFF-LINE. REMOVED AND REPLACED LEFT ALTERNATOR. OPS CHECKS GOOD.SDR 99ZZZX1043Alternator · damagedFOUND ALTERNATOR CASE HALF BOLTS LOOSE CAUSING AIRCRAFT TO LOSE ELECTRICAL POWER. SUBMITTER SUSPECTED IMPROPER ASSY AT FACTORY.SDR 99ZZZX926Alternator · crackedPILOT NOTED LEFT ALTERNATOR BELT TENSION LOOSE AND FOUND ALTERNATOR BROKEN AT MOUNT EAR. INSPECTED INSTALLATION AND FOUND LYCOMING SI 1451 HAD BEEN C/W. HOWEVER, WEAR WAS FOUND AT FREON COMPRESSOR WHERE LINK BETWEEN ALTERNATOR AND COMPRESSOR ATTACHES. THIS SDR HEEA060100Generator · bentSHAFT IS BENT ON GENERATOR.SDR 99ZZZX624Shaft · misinstalledALTERNATOR SHAFT NOT FULLY INSTALLED INTO ARMATURE/ALTERNATOR BODY. KEYWAYS NOT MATCHING UP. SHAFT TOO LONG. UNIT WAS OVERHAULED BY AERO ELECTRIC INC. NV2ROYSL.SDR 99ZZZX1023Alternator · malfunctionedALTERNATOR KICKS OFF-LINE UNDER A LOAD OF MID TO HIGH INTENSITY AND WILL NOT COME ON-LINE UNTIL 1,500 RPM'S OR HIGHER.SDR 99ZZZX992Belt · looseACCEPTANCE INSPECTION OF NEW CESSNA WITH 8.0 HOURS SINCE MANUFACTURE REVEALED THE ALTERNATOR BELT TENSION WAS LOOSE. ADJUSTED TENSION WITHIN LIMITS, 11 TO 13 FEET/POUNDS.SDR CA990125015Wire · broken(CAN) DURING CLIMB, THE NR 1 DC GENERATOR WAS LOST. AIRCRAFT RETURNED. INVESTIGATION FOUND ONE WIRE BROKEN AT THE GENERATOR TERMINAL BLOCK.SDR 99ZZZX396Wire · brokenLOW VOLTAGE LIGHT CAME ON SEVERAL TIMES DURING FLIGHT. PERFORMED ENGINE RUN-UP FOR OPERATIONAL CHECK OF ALTERNATOR. ALTERNATOR CHECKS GOOD. BATTERY AND GROUND ALTERNATOR TERMINALS WERE FOUND BROKEN. THESE WIRE TERMINALS APPEAR TO BE THIN AND ARE BREAKING SDR 99ZZZX311Bracket · brokenDURING ACCEPTANCE INSPECTION, ALTERNATOR BRACKET, P/N 22-2411-10-00, WAS FOUND BROKEN OFF AT THE TOP ALTERNATOR MOUNTING HOLE UNDERNEATH WELD. LACK OF PENETRATION DURING WELDING MAY HAVE BEEN THE CAUSE. PART REPLACED WITH NEW PART. AIRCRAFT RETURNED TO SERVSDR CA981230033Connector · mismanufactured(CAN) THIS MODEL GENERATOR USED ON THE CESSNA X AIRCRAFT, HOWEVER, THIS PARTICULAR ONE WAS USED IN LOAD BANK FOR LOADING GEARBOX DURING ENGINE TEST INTERMITTENT, ELECTRICAL PROBLEM NOTED. THE FEMALE CONNECTOR ON THE GENERATOR HAD PINS H AND A REVERSED.SDR CA981207024Connector · loose(CAN) SHORTLY AFTER TAKEOFF, SMOKE EMANATED FROM THE MAIN DISTRIBUTION CENTER ACCOMPANIED WITH A BURNING SMELL. MAINTENANCE INVESTIGATION REVEALED SOURCE TO BE THE MDC AT THE ELECTRICAL CONNECTION BETWEEN THE AIR COMPRESSOR AND THE 100-AMP CURRENT LIMITER (2FSDR AU981528Alternator · failed(AUS) ALTERNATOR INTERNAL FAILURE. CIRCUIT BREAKER TRIPPED. BATTERY DRAINED.SDR AU981575Brush · failed(AUS) ALTERNATOR BRUSH (1OFF) IN BRUSH CARRIER ASSEMBLY FAILED TO CONTACT SLIP RING.SDR HEEA0016380Shaft · brokenGENERATOR SHAFT BROKEN.SDR HEEA0016379Generator · failedGENERATOR WILL NOT COME ON LINE.SDR 98ZZZX3926Alternator · failedPILOT LOST ALL ELECTRICAL POWER. ON INSPECTION, THE ALTERNATOR FAN WAS FOUND DESTROYED AND LODGED IN THE ALTERNATOR BRACKET AND ENGINE BAFFELS. SUBMITTER STATED POSSIBLE CAUSE SEEMS TO BE FRAME CRACKS OR DAMAGE DONE PREVIOUSLY TO CAUSE A FAN SEPARATION UNDERSDR SIMA982831Generator · failedMKE - BILL OF WORK ISSUED TO CLEAR AN MEL ON THE NR 2 GENERATOR BEARING INDICATOR. FOUND GENERATOR WINDINGS HANGING OUT OF THE HOUSING, AND THE GENERATOR WAS HELD ONLY BY ITS WIRES. NO DAMAGE TO THE ENGINE OR COWLINGS WAS NOTED. REMOVED AND REPLACED GENERATSDR AU981279Wire · worn(AUS) NR 1 GENERATOR BLUE PHASE WIRE CHAFED APPROXIMATELY 300 MM (11.8 INCHES) FROM THE GENERATOR.SDR HEEA0016129Generator · failedGENERATOR BURNED AND SHAFT GRINDS.SDR 98ZZZX4070Alternator · failedALTERNATOR INSTALLED 10-1 AND REMOVED 10-2. ALTERNATOR HAD FIELD VOLTAGE, NO OUTPUT.SDR 98ZZZX4332Ecu · failedA BUS 2 FAILURE WAS OBSERVED WHEN THE AUDIO PANEL, NAV/COM 1 AND GPS FAILED WHICH RESULTED IN A LOSS OF COMMUNCIATION. THE FAULT WAS LOCATED AT THE JUNCTION OF THE BUS 2 WIRE AND F2 FUSE HOLDER TERMINAL IN THE EPCU. THE SOLDER JOINT HAD BROKEN DUE TO A LACK OSDR 98ZZZX3677Wire · misinstalledDURING TROUBLESHOOTING FOR AN INTERMITTENT ALTERNATOR FAILURE, NOTED WHEN EITHER ALTERNATOR IS SWITCHED OFF, THE REMAINING ALTERNATOR ALSO TURNS OFF. INSPECTION SHOWED THE CABLE FROM THE ALTERNATOR SHUNT TO THE ALTERNATOR CIRCUIT BREAKER SWITCH (WIRE PIEC ANDSDR 98ZZZX4049Alternator · crackedDURING ROUTINE INSPECTION, THE ALTERNATOR HOUSING WAS FOUND CRACKED AT THE MOUNT POINT.SDR 98ZZZX3924Alternator · crackedDURING ROUTINE INSPECTION, THE ALTERNATOR HOUSING WAS FOUND CRACKED AT THE MOUNT POINT.SDR 99ZZZX96Support · crackedDURING AN ENGINE CHANGE, THE ALTERNATOR SUPPORT BRACKET WAS FOUND CRACKED. THE CRACK WAS ABOUT 1.25 INCHES LONG AND SEEMS TO HAVE STARTED AT THE MANUFACTURER'S WELD. CESSNA SIL SE 79-5 CALLS FOR REPLACEMENT OF THIS PART WITH AN INTEGRAL ENGINE MOUNT LEG/ALTESDR HEEA0016020Stator · failedCAUSED STARTER/GENERATOR TO FAIL TEST POINT C (5) EXTERNAL FIELD CURRENT RESISTANCE WAS TOO LOW.SDR 98ZZZX3608Wire · chafedALTERNATOR OUTPUT AND FIELD WIRES CHAFED AGAINST BAFFLE BEHIND ALTERNATOR. FIELD AND OUTPUT SHORTED TOGETHER CAUSING ALTERNATOR RUNAWAY. VOLTAGE RUINED MANY ELECTRICAL COMPONENTS. POTENTIAL FIRE. MASTER SWITCH WOULD NOT SHUT OFF RUNAWAY. SUBMITTER SUGGESTSDR 98ZZZX3413Housing · crackedDRIVE END HOUSING FAILED AFTER 150 HOURS TIS ON THIS GEAR DRIVE UNIT. THIS COULD HAVE CAUSED ALTERNATOR TO FAIL AND SEVERELY DAMAGE ENGINE. HAVE SEEN SAME PROBLEM WITH OTHER UNITS OF THIS SAME MODEL. CRACKS ORIGINATED IN SHARP CORNERS OF SUPPORT WEBS.SDR 98ZZZX3864Alternator · failedALTERNATOR WAS FOUND UNAIRWORTHY 'OUT OF THE BOX' DUE TO LOCKED CONDITION OF THE ROTOR ASSEMBLY. SUBMITTER STATED ALTERNATOR WAS NEWLY OVERHAULED.SDR 98ZZZX3474Alternator · failedALTERNATOR CAME WITH NEW ENGINE, FACTORY REMANUFACTURED, JULY, 1998. WHEN ALTERNATOR IS ON-LINE, FUSE FAILS ON FIELD WIRE, WHEN FUSE IS REPLACED, VOLTAGE CHECK OK ON FIELD WIRE UNTIL ENGINE TURNS, FUSE FAILS.SDR 98ZZZX3941Rotor · failedOPEN CIRCUIT IN ROTOR FIELD WINDING.SDR 98ZZZX3676Alternator · failedALTERNATOR FAILED ON RT ENGINE. TIS 64.9 HOURS SINCE FACTORY NEW ENGINE INSTALLATION ON 7-14-98. THIS DATE, 8-14-98, FAILED. (30 DAYS).
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