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 AU000221Stator · loose(AUS) ALTERNATOR STATOR WINDINGS LOOSE CAUSING CHAFING AND SHORT CIRCUIT.SDR 20000424SH012Rotor Coil · failedALTERNATOR FAILED WHILE ACFT WAS IMC, VFR CONDITIONS ENCOUNTERED. AIRCRAFT LANDED WITHOUT INCIDENT. INVESTIGATION REVEALED ROTATING FIELD WAS ELECTRICALLY OPEN DOWN. STREAM OF SUD RINGS. PART TSO WAS ONLY 52 HOURS SINCE OVERHAULED. (X)SDR 20000417SH014Alternator · failedALTERNATOR FAILED DURING FLIGHT. TROUBLESHOOTING WITH ALTERNATOR TEST BOX SHOWED NO OUTPUT. CHECKING FIELD WINDING RESISTANCE PER CESSNA MM SHOWED EXCESSIVELY HIGH RESISTANCE. ALTERNATOR REPLACED. (X)SDR CA000307002Generator · failed(CAN) NR 2 DC GENERATOR HOT CAUTION LIGHT FLICKERED OFF/ON PRIOR TO ENG START AND DURING FLIGHT. NR 2 DC STARTER/GENERATOR REMOVED AND NO DEFECTS FOUND. COMPONENT REPLACED.SDR 20000417SH003Alternator · failedSMOKE IN COCKPIT. TROUBLESHOT SYSTEM, FOUND ALTERNATOR BEARING FROZE. REPLACED ALTERNATOR WITH OVERHAUL UNIT, PN DOFF10300J, SN A-100167. (X)SDR SWIA971715Generator · failedAUXILLARY GENERATORS NUMBER ONE AND NUMBER TWO BOTH FAILED IN FLIGHT, WOULD NOT RESET. RETURNED TO LAX. RAN ENGINES, FOUND RIGHT AUXILLARY GENERATOR WORKING NORMAL.SDR 20000503SH006Brush Block · failedWHILE ON A SIGHTSEEING FLIGHT ON MAUI, HAWAII ON 2-23-00 AT APPROXIMATELY 3 PM HST, PILOT EXPERIENCED A LOW VOLTAGE CONDITION ON THE AIRCRAFT. PILOT THEN ELECTED TO MAKE A PRECAUTIONARY LANDING AT KEANAE PENNINSULA. FURTHER INVESTIGATION FOUND THE BATTERY WSDR CA000224023Bearing · failed(CAN) RIGHT GENERATOR FAILED IN-FLIGHT AS A RESULT OF THE BRUSH END BEARING. DRIVE END BEARING ALTHOUGH NOT YET FAILED, REVEALED AN ABSENCE OF LUBRICATION.SDR 20000407SH024Belt · disintegratedALTERNATAOR BELT CAME APART. ALTERNATOR QUIT WORKING. BATTERY DRY OF ACID. BATTERY DEAD. AIRCRAFT LANDED. LANDING GEAR NOT DOWN AND LOCKED. RIGHT GEAR WAS NOT LOCKED. (X)SDR AU000252Stator · loose(AUS) ALTERNATOR STATOR LOOSE. STATOR WINDINGS SHORT CIRCUITED.SDR 20000829SH004Alternator · inoperativeALTERNATOR FAILURE REPORTED BY PILOT DURING FLIGHT. INSPECTION OF CHARGING SYSTEM FOUND HIGH RESISTANCE ACROSS ALTERNATOR CONTACTOR TERMINALS. POSSIBLE CAUSE, TURNING ON ALTERNATOR WITH HIGH LOAD. SUBMITTER SUGGESTED CHANGING START-UP PROCEDURE SO ALTERNATOSDR 2000ZZZX230Alternator · failedELECTRICAL FAILURE DUE TO INTERNAL ALTERNATOR FAILURE WITH STRONG SMELL OF ELECTRICAL.SDR 2000ZZZX137Alternator · failedALTERNATOR BOUND UP AND CAUSED THE DRIVE COUPLING TO SEIZE. STRONG SMELL OF BURNED ELECTRICAL.SDR RAIA0001004Generator · failed7108 - STL - RIGHT GENERATOR FAULTED 5 TO 7 MINUTES INTO FLIGHT. MAINTENANCE REPLACED RIGHT ENGINE STARTER GENERATOR.SDR 2000ZZZX170Control Unit · failedPILOT DETECTED ALTERNATOR OUT LIGHT IN-FLIGHT AND NO OUTPUT ON METER. CYCLED ALT SWITCH AND ALTERNATOR OUT LIGHT STAYED OFF, BUT METER WENT TO FULL CHARGE DEFLECTION. PILOT LANDED WITH NO PROBLEMS. UPON INVESTIGATION, FOUND ALT CONTROL UNIT MELTED INTO AREASDR HEEA065229Control Unit · malfunctionedGEN. NR 2 KICKS OFF LINE IN -FLIGHT.SDR CA991209068Brush Block · worn(CAN) DURING CRUISE FLIGHT, THE CREW GOT A GEN 2 FAIL LIGHT. MAINTENANCE FOUND THE ALTERNATOR BRUSHES WORN TO THE POINT OF BRUSH FAILURE.SDR CA991112013Field Rotor · sheared(CAN) DURING FLIGHT, THE CHARGING SYSTEM FAILED AND WOULD NOT RESET. AFTER LANDING, MAINTENANCE PERSONNEL DETERMINED THAT THE ALTERNATOR FIELD ROTOR HAD SHEARED AFT OF THE FORWARD (DRIVE END) BEARING.SDR RAIA9910037Generator · failed7391 - XNA - LEFT GENERATOR INOP. MAINTENANCE REPLACED LEFT GENERATOR.SDR 99ZZZX4181Brace · crackedALTERNATOR FAILED EN ROUTE. INSPECTION REVEALED THE FIELD WIRE BROKE LOOSE FROM ALTERNATOR MOST LIKELY DUE TO A CRACKED ALTERNATOR SUPPORT BRACE BEING CRACKED ALLOWING THE ALTERNATOR TO VIBRATE.SDR 99ZZZX4211Belt · wornBELT STARTED TO WEAR IN ONE SPOT ABOUT 6 INCHES LONG AND STARTED TO TURN IN FLYWHEEL GROOVE.SDR VNAA9910011Ecu · failedON THE TAKEOFF ROLL, THE LEFT ENGINE ECU FAILED AND THE NH REACHED 104 PERCENT FOR ONE SECOND. THE CREW ABORTED THE TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE INSPECTED THE ENGINE FOR FOD INGESTION AND DETERMINED THE AIRCRAFT WAS SAFE FOR FERRY FLIGHT TO SDR AU991083Alternator · failed(AUS) ALTERNATOR FAILED INTERNALLY AND SEIZED CAUSING INTERNAL AND EXTERNAL DAMAGE.SDR HEEA064746Control Unit · failedNO OUTPUT FROM GENERATOR. 1.5 VDC AT TEST POINTS AND CANNOT ADJUST AT ALL.SDR 99ZZZX4420Alternator · failedUPON LANDING, THE MAIN AND NOSE LANDING GEAR COLLAPSED. PILOT REPORTED ELECTRICAL SYSTEM PROBLEMS. CHECK OUT OF ELECTRICAL SYSTEM REVEALED THE ALTERNATOR WAS NOT WORKING.SDR 99ZZZX4240Brushes · wornAIRCRAFT LANDED, NO POWER. BATTERY DEAD. ALTERNATOR QUIT ONE HOUR PRIOR TO LANDING (BAD WEATHER). FOUND ALTERNATOR BRUSHES WORN TO SPRINGS, WORKING INTERMITTENTLY. INSTALLED NEW BRUSHES, CHECKED OK. TOTAL TIME UNKNOWN.SDR 99ZZZX4162Bearing · frozenDURING A ROUTINE INSPECTION, THE ALTERNATOR BELT IDLER PULLEY BEARING WAS FOUND FROZEN.SDR AU990985Sensor · faulty(AUS) ALTERNATOR FAULTY. ELECTRICAL SENSOR FAILED.SDR 99ZZZX3853Alternator · failedDURING VFR FLIGHT, ALTERNATOR FAILED AFTER LANDING GEAR RETRACTION. ALTERNATOR FAILED 5 MINUTES AFTER LANDING GEAR RETRACTION DURING CLIMB TO ALTITUDE. AMMETER AND VOLTMETER INDICATIONS PRIOR TO FAILURE WERE NORMAL. ALTERNATOR DID NOT COME ON-LINE AFTER COMSDR 99ZZZX3629Ground Pad · burntLEFT DC GENERATOR WOULD OCCASSIONALLY TRIP OFF-LINE DURING A GROUND RUN-UP. FOUND THE LEFT GENERATOR SHUNT GROUND PAD MELTED AND BURNT. GROUND PAD HAD RECENTLY BEEN REMOVED BY AN OUTSIDE MAINT FACILITY (AT CUSTOMER REQUEST) TO CHECK IT AND SHUNT FOR CORROSIOSDR HEEA064344Generator · malfunctionedGENERATOR HOT LIGHT INTERMITTENT.SDR MALA976555Generator · failedDURING FLIGHT, RT DC GEN ILLUMINATED, FOLLOWED QRH AND GEN WON'T RESET. RETURNED TO DTW. MAINTENANCE REPLACED RIGHT DC GEN. OPS CHECK GOOD IAW SF340 MM ATA CHAP.SDR C2XA99CL102Generator · malfunctionedCLE - FLT 4049 - THE CREW REPORTED THE NR 3 GENERATOR DROPPED OFF LINE NUMEROUS TIMES AFTER TAKEOFF. THE AIRCRAFT RETURNED TO CLEVELAND WITHOUT FURTHER INCIDENT. MAINTENANCE RELEASED THE AIRCRAFT IAW MEL 24-31-01 CAT 'C' CONTROL NUMBER 184935. THE AIRCRAFT SDR 99ZZZX3073Brush · wornALTERNATOR FAILED TO CHARGE 672 HOURS AFTER OVERHAUL. INSPECTION REVEALED THAT ALTHOUGH BOTH BRUSHES HAD BEEN REPLACED DURING OVERHAUL, ONE BRUSH WAS FULLY WORN OUT WHERE THE OTHER WAS ONLY 50 PERCENT WORN. OVERHAULER SAID HE HAS SEEN THIS BEORE AND ATTRIBUTSDR CA990817029Alternator · failed(CAN) ALTERNATOR REAR BEARING FAILURE. SYSTEM NOT CHARGING.SDR CA990728098Alternator · failed(CAN) REPEATED TRIPPING OF ALTERNATOR FIELD CIRCUIT BREAKER. ALTERNATOR NOT PROVIDING FULL AMPERAGE. ALTERNATOR REPLACED.SDR CA990804013Wire · shorted(CAN) ALTERNATOR FIELD WIRE AND VOLTAGE REGULATOR SHORTED, LEFT SYSTEM.SDR CA990715048Wire · broken(CAN) RIGHT ALTERNATOR WENT OFF-LINE AND THE AIRCRAFT STARTED TO LOSE NAVIGATIONAL AIDS. CREW DISCOVERED NO CHARGE FROM ALTERNATOR. THE AMP TERMINAL END WAS REPLACED AT THE FIELD TERMINAL FOR THE RIGHT ALTERNATOR AND BOTH ALTERNATOR BELTS TIGHTENED.SDR CA990707001Generator · failed(CAN) DURING CRUISE, NR 2 DC GENERATOR FELL OFF-LINE. GENERATOR REPLACED.SDR C2XA99BT046Generator · failedCAE - AFTER TAKEOFF, CREW REPORTED FIVE GENS FAILED IN FLIGHT. APU GEN FAILED, THEN GEN 2, GEN 4, GEN 3, AND GEN 1. AIR RETURNED TO CAE LANDED UNEVENTFULLY. MAINTENANCE TROUBLESHOOTING. (M)SDR 99ZZZM556Generator · failedCAE - AFTER TAKEOFF, CREW REPORTED FIVE GENS FAILED IN FLIGHT. APU GEN FAILED, THEN GEN 2, GEN 4, GEN 3, AND GEN 1. AIR RETURNED TO CAE LANDED UNEVENTFULLY. MAINTENANCE TROUBLESHOOTING. (M)SDR 99ZZZM555Generator · failedCAE - AFTER TAKEOFF, CREW REPORTED FIVE GENS FAILED IN FLIGHT. APU GEN FAILED, THEN GEN 2, GEN 4, GEN 3, AND GEN 1. AIR RETURNED TO CAE LANDED UNEVENTFULLY. MAINTENANCE TROUBLESHOOTING. (M)SDR 99ZZZM554Generator · failedCAE - AFTER TAKEOFF, CREW REPORTED FIVE GENS FAILED IN FLIGHT. APU GEN FAILED, THEN GEN 2, GEN 4, GEN 3, AND GEN 1. AIR RETURNED TO CAE LANDED UNEVENTFULLY. MAINTENANCE TROUBLESHOOTING. (M)SDR 99ZZZM553Generator · failedCAE - AFTER TAKEOFF, CREW REPORTED FIVE GENS FAILED IN FLIGHT. APU GEN FAILED, THEN GEN 2, GEN 4, GEN 3, AND GEN 1. AIR RETURNED TO CAE LANDED UNEVENTFULLY. MAINTENANCE TROUBLESHOOTING. (M)SDR 99ZZZX2272Wire · chafedFOUND WIRE COMING OFF ALTERNATOR (BATTERY POST) TO MAIN BUSS AT CIRCUIT BREAKER PANEL CHAFED TO NR 1 CYLINDER PRIMER LINE AND WELDED ITSELF TO THE LINE. THIS RESULTED IN A TOTAL ELECTRICAL FAILURE.SDR 99ZZZX4105Mount · looseINBOARD MOUNT BEGAN WORKING AND EVENTUALLY CAUSED LOSS OF ALTERNATOR BELT TENSION. ALTERNATOR WAS PREVIOUSLY INSTALLED UNDER STC SA 334SW.SDR 99ZZZX2210Pulley · damagedALTERNATOR PULLEY COOLING FINS BECAME DETACHED FROM PULLEY CAUSING ALTERNATOR TO VIBRATE OFF ENGINE SHEARING BRACKET BOLTS. INSTALLED NEW BOLTS AND ALTERNATOR. PROBLEM HAS NOT RECURRED. POSSIBLE CAUSE IS FATIGUE OF COOLING FINS. SUBMITTER SUGGESTED INSPECTSDR RAIA990508Generator · failedFLT 7494 - STL - NR 2 GENERATOR INOPERATIVE. MAINTENANCE REPLACED NR 2 GENERATOR. (M)SDR AU990437Wire · broken(AUS) ALTERNATOR GROUND LEAD HAD COME ADRIFT FROM ITS TERMINAL AT THE ALTERNATOR SOME TIME PREVIOUSLY AND HAD BEEN STOWED IN THE LOOM AND HAD NOT BEEN RETERMINATED. WITHOUT A GROUND, THE ALTERNATOR HAD BEEN GROUNDING THROUGH AN ALUMINIUM DUCT RESTING AGAINSTSDR CA990531007Generator · failed(CAN) GENERATOR WARNING LIGHT FLASHED SEVERAL TIMES AND WOULD NOT PRODUCE ANY OUTPUT. GENERATOR REPLACED, BUT PROBLEM REMAINED. VOLTAGE REGULATOR CHANGED AND SYSTEM IS NOW SERVICEABLE.
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