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 HYIA20151223003Alternator · intermittentPILOT REPORTED BOTH ALTERNATORS KEPT GOING OUT INFLIGHT. INSPECTED ALTERNATORS IAW MM CH 24. RAN ENGS & ALTERNATORS, ALL OPERATIONS CHECKED GOOD.SDR 29GA2015122100004Pdu · failedLT GENERATOR FAILED INFLIGHT. R & R LT PDU IAW AMM 24-31-20.SDR CA151104004Generator · failed(CAN) AS ACFT LEVELED OFF AFTER DEPARTURE, THE FLIGHT CREW WITNESSED THE NR 2 DC GENERATOR HOT CAUTION LIGHT ILLUMINATE. THE FLIGHT CREW ACTIONED THE QRH AND TURNED THE GENERATOR OFF. HOWEVER, THE HOT CAUTION LIGHT REMAINED ILLUMINATED. THE ACFT RETURNED TO DSDR CA150825001Starter Gen · failed(CAN) NR 1 DC GEN CAUTION ILLUMINATED IN FLIGHT. DC GEN SWITCHED OFF IAW QRH. NR 1 DC GEN HOT CAUTION ILLUMINATED 5 MIN AFTERWARD AND WENT OUT AFTER APPROX. 20 MIN. MAINTENANCE REPLACED THE NR 1 DC STARTER/GENERATOR AND IT TESTED SERVICEABLE. THE REMOVED STARSDR HYIA2015072015Alternator · failedPILOT REPORTED LT & RT ALTERNATOR LIGHTS ILLUMINATED IN FLIGHT. R & R THE RT ALTERNATOR & RT VOLTAGE REGULATOR. PERFORMED PARALLELING. OPERATIONAL & LEAK CHECKED GOOD IAW MM CH 24-30-01.SDR CA150615008Generator · failed(CAN) THE ACFT WAS ON A WATER BOMBING MISSION & DURING LIFT OFF FROM A SCOOP THE CREW NOTICED THE ANNUNCIATOR LIGHTS IN THE COCKPIT SEEMED TO BE DIMLY LIT. THEY DISCOVERED THAT THE GEN OUT ANNUNCIATOR WAS LITE ON BOTH SIDES INDICATING A DOUBLE GEN FAILURE. TSDR CA150218004Generator · failed(CAN) NR 1 DC GENERATOR FUNCTION CHECK FAILED DURING ENGINE RUNS. DC GENERATOR REPLACED. FURTHER ON, AN INSPECTION WAS C/O ON THE FAILED DC GENERATOR AND FOUND A SCREW HOLDING ONE OF THE TERMINAL CABLES CHAFED. THE INSULATION MATERIAL BENEATH THE PROTECTINGSDR ASOA20150109001Gcu · faultyTHE CREW REPORTED APU GENERATOR OFF BUSS WITH BURNING ODOR. MAINTENANCE INSPECTED AND REPLACED THE APU GENERATOR CONTROL UNIT, OPS CHECKED GOOD.SDR HYIA20141126001Alternator · defectiveBITTER FUME LIKE SMELL IN CABIN. INSPECTED ELEC WIRING & FOUND NO DEFECTS. SMELL WAS DETERMINED TO BE COMING FROM THE LT ALTERNATOR. R & R THE LT ALTERNATOR & RETURNED THE ACFT TO SERVICE WITH NO FURTHER DEFECT NOTED.SDR A6WA201442070Adg · deployedIMMEDIATELY AFTER ROTATION ADG AUTO DEPLOYED. FOLLOWED BY ALL CTR PEDESTAL LIGHTS, EICAS & RTU LIGHTS FLASHING ON & OFF. NO MSG'S POSTED ADG SHOWED DEPLOYED ON SYNOPTIC PAGE. LANDED AT 45K LBS.SDR CA140909009Bracket · cracked(CAN) WITH THE ALTERNATOR REMOVED FROM ITS MOUNTING BRACKET FOR CLOSER INSPECTION, IT WAS NOTED THAT THE BRACKET HAD 2 CRACKS, 1 FROM EACH HOLE USED FOR THE SINGLE MOUNTING BOLT. EACH CRACK WENT FROM THE HOLE TO THE CLOSEST EDGE OF THE MATERIAL. ALSO, WHILE TSDR 2014FA0000528Alternator · faultedDURING APPROACH, LOW VOLTAGE LIGHT CAME ON. RESET OF ELECTRICAL SYSTEM WAS UNSUCCESSFUL. ELECTRICAL LOAD WAS MINIMIZED WITH AN UNEVENTFUL LANDING. THE ELECTRICAL SYSTEM WAS TROUBLESHOT AND THE ALTERNATOR WAS FOUND AT FAULT, NOT CHARGING. ALTERNATOR REPLACESDR 2014FA0000527Alternator · inoperativeON APPROACH, THE LOW VOLTAGE LIGHT ILLUMINATED. RESET OF THE ELECTRICAL SYS WAS UNSUCCESSFUL. ELECTRICAL LOAD WAS MINIMIZED WITH AN UNEVENTFUL LANDING. THE ELECTRICAL SYSTEM WAS TROUBLESHOT AND THE ALTERNATOR WAS FOUND AT FAULT, NOT CHARGING. ALTERNATOR WASDR ASOA20140820089Starter Gen · failedPILOT REPORTED AN APU GENERATOR FAIL MESSAGE WITH STRONG ELECTRICAL ODOR. FOUND APU STARTER/GENERATOR INOPERATIVE.SDR ECQS2014082200491Alternator · failedALTERNATOR FAILED WHEN THROTTLE WAS DECREASED TO APPROXIMATELY 1600 RPM, THE ALTERNATOR FAIL CAS ILLUMINATED AND ALTERNATOR OUTPUT WENT TO ZERO. THE PROCESS COULD BE DUPLICATED CONSISTENTLY.SDR BIGR20140725001Alternator · fracturedTHE RT ENGINE LOCKED UP DURING FLIGHT GOING INTO FEATHER AND COULD NOT BE RESTARTED. MAINTENANCE FOUND THE ENGINE NEARLY LOCKED UP BUT COULD STILL BE TURNED WITH DIFFICULTY USING THE PROPELLER. THE ALTERNATOR ROTOR SHAFT HAD SHEARED OFF FLUSH WITH THE ALTERNSDR 7GMB2014306031151Generator · failedNR 4 GENERATOR OFF BUSS EICAS MESSAGE DISPLAYED AFTER ENGINE START. REMOVED NR 4 GENERATOR & REPLACED IT WITH OVERHAULED UNIT. OPS & LEAK CHECKED GOOD. ACFT RETURNED TO SERVICE.SDR SIMA20140522004Generator · failedMEL 24-4 AUTH 050987DM-B ORG LPG 3521386, GEN 4 OFF BUS EICAS MSG ON ENG 1 SHUT DOWN. R & R NR 4 GEN IAW MM 24-31-01. OPERATIONS & LEAK CHECKED GOOD MEL RESTORED.SDR 2014FA0000265Alternator · failedFRONT ENGINE CHARGING SYSTEM, INTERMITTENT, THEN CONSTANT ALTERNATOR INOPERATIVE LIGHT. CHECKED CHARGING SYSTEM IAW MM. FOUND THREE BOLTS THAT HOLD THE ALTERNATOR FRAME TOGETHER FOUND LOOSE DESPITE FACTORY SAFETY WIRE BEING SECURE AND UNTOUCHED. DISASSEMBLY SDR 2014FA0000259Bracket · crackedNR 1 ALTERNATOR BRACKET CRACK FOUND DURING INSPECTION AT THE ALTERNATOR BRACKET MOUNTING HOLE.SDR BGJA2014042300002Alternator · failedTHE ACFT HAD TOTAL ELECTRICAL FAILURE DURING FLIGHT, DUE TO BOTH CHARGING SYSTEMS FAILING TOGETHER. RT ALTERNATOR FAILED DURING CRUISE, SHORTLY AFTER LT ALTERNATOR FAILED DUE TO A FAILED DRIVE CLUTCH. THE RT ALTERNATOR APPEARED TO HAVE AN INTERNAL SHORT THATSDR 39LA2014021257Generator · failedAFTER DEPARTURE FROM OASH THE DC GEN LIGHT ILLUMINATED. ACCOMPLISHED THE EMERGENCY PROCEDURES, GEN WOULD NOT RESET. R & R DC GEN PN 30E20-97A IAW S61 MM 4045-80, REV 47, 24-20-01.SDR HALA2014011600007Tru · failedAPU AUTO SHUTDOWN AT 10K. PERFORMED BITE OF ECB FOUND POWER SUPPLY INTERRUPTED. R & R APU TRANSFORMER RECTIFIER IAW 24-32-51. OPS CHECK GOOD, OK FOR SERVICE.SDR VJ3R2013FA0000660Circuit Breaker · failedDURING GROUND RUNUP, THE PILOT REPORTED THAT THE ALTERNATOR WAS DISCHARGING AND THE ALTERNATOR OUT LIGHT WAS ON. DURING TROUBLESHOOTING IT WAS FOUND THAT THE ALTERNATOR CIRCUIT BREAKER HAD FAILED, WITH AN ESTIMATED 17504 CYCLES. A NEW CIRCUIT BREAKER INSTALLSDR BSYR20130905056Alternator · abnormalAFTER TAKEOFF, PILOT NOTICED ALTERNATOR CYCLING ON AND OFF. PILOT NOTIFIED TOWER OF ISSUE AND RETURNED AND LANDED SAFELY WITHOUT INCIDENT. MX IS INSPECTING.SDR ISCA2013071500001Wire · rotatedPILOT NOTED LEFT ALTERNATOR INOPERATIVE LIGHT ON IN ACFT DISCREPANCY LOG. MECHANICAL INSPECTION OF THE ALTERNATOR REVEALED THAT THE LOWER BRUSH LEAD CARRIAGE HELD IN PLACE BY A TERMINAL STUD AND NUT, HAD ROTATED FROM ITS ASSY POSITION TO A POSITION IN WHICH TSDR ASAA2013071195564Alternator · faultedWHILE ACCOMPLISHING T/C 78273000 FOUND FAULT ON NR 2 ENGINE SHORT TIME 73-11272. THE ALTERNATOR VOLTAGE INPUT TO THE EEC IS OUT OF RANGE. FAULT FOR LAST 2 FLIGHTS. ACFT GROUNDED. REMOVED EEC ALTERNATOR AND ROTOR REF MM 73-21-08. INSTALLED NEW ALTERNATOR ASDR CHQA20130516164Generator · failedCREW REPORTED THAT DURING CLIMBOUT THEY RECEIVED A GENERATOR OFF BUSS MESSAGE FROM GENERATORS 1, 3, 4, AND THE APU GENERATOR. THE CREW FOLLOWED THE QUICK REFERENCE HANDBOOK AND THE GENERATORS DID NOT COME BACK ONLINE. DURING THE RETURN TO FIELD FOR THIS ISSUSDR BSYR20120515048Alternator · failedEN ROUT FROM MLS TO BIL, PILOT EXPERIENCED ALTERNATOR FAILURE APPROXIMATELY 20 MINUTES AFTER DEPARTING. ATC WAS NOTIFIED AND PILOT PROCEEDED TO BIL AND LANDED SAFELY WITHOUT INCIDENT. MAINTENANCE IS INSPECTING.SDR 2013FA0000272Warning System · malfunctionedWHILE TROUBLESHOOTING THE ALTERNATOR OUT WARNING SYSTEM, DISCOVERED THAT T1 ALTERNATOR OUT WOULD NOT GIVE ANY WARNING.SDR QXEA2013042900871Generator · malfunctionedAFTER LEVELING AT CRUISE ALTITUDE, FL220 NR1 AND NR2 DC GENERATOR CAUTION LIGHTS ILLUMINATED. COMPLIED WITH EMER/ABNORMAL CHECKLIST. NR 2 DC GENERATOR RESET. NR 1 DC GENERATOR FAILED TO RESET. COMPLIED WITH NR 1 DC GENERATOR CHECKLIST. NO ABNORMAL INDICSDR CA130102003Stud · loose(CAN) DURING A 200 HR INSPECTION, THE ALTERNATOR GROUND STUD USED TO MOUNT THE CAPACITOR WAS LOOSE AND COULD NOT BE TIGHTENED DUE TO WEAR. ALTERNATOR REPLACED.SDR TRBA20121214001Gcu · inoperativeTHE CREW REPORTED THE DC SERVICE/UTLILITY BUSS FAULT LIGHT CAME ON ALONG WITH MULTIPLE FAILURES. THE CREW ELECTED TO RETURN TO DEPARTURE. THE ACFT LANDED WITHOUT INCIDENT AND WAS REMOVED FROM SERVICE. R & R RT ENGINE DC GCU AND DC BPCU IAW JIC 24-32-81, RAISDR CA121109015Generator · seized(CAN) DURING THE TAKEOFF ROLL, ENGINE NR 1 DC GENERATOR TRIPPED DROPPED OFF LINE. THE PILOTS ABORTED THE TAKEOFF AND RETURNED TO THE TERMINAL. ATTEMPTS TO PUT THE GENERATOR ON LINE WERE UNSUCCESSFUL. MAINTENANCE REPLACED THE DC GENERATOR AND RAN THE ENGINE SDR 2012FA0000650Mount Bracket · crackedCRACK DISCOVERED IN ALTERNATOR MOUNTING BRACKET, PN 657046. THIRD OCCURANCE OF THIS PROBLEM. REF 2012FA0000649.SDR HYIA20120817001Alternator · failedPILOT REPORTED AT APPLICATION OF TAKEOFF POWER, SMOKE BEGAN ENTERING THE COCKPIT FROM THE RT SIDE. TAKEOFF WAS ABORTED AND ACFT WAS SUBSEQUENTLY SHUTDOWN AND EVACUATED. ON INSPECTION BY MX, SEVERAL PANELS IN COCKPIT WERE INSPECTED AND FOUND NO EVIDENCE OF SMOSDR 2012FA0000510Brushes · wornINSPECTED ALTERNATOR AND FOUND ONE BRUSH WAS WORN PAST LIMITS, THE OTHER EXHIBITED IMMINENT FAILURE.SDR SWIA201231262Generator · malfunctionedAFTER GENERATOR 1 FAILED TO RESET ATTEMPTED APU START. AS RPM ACCELERATED THROUGH 50 PERCENT AND APU GENERATOR CAME ONLINE, THE CENTRAL BUS WENT OFFLINE. (FLT 7786) FLASHED LEFT AND RIGHT GENERATOR CONTROL UNIT FIELDS. PARALLELED MAIN, AUXILIARY AND APU GESDR BHKR0621 12Warning Light · illuminatedDURING APPROACH, GEAR UP, FLAPS 8 DEGREES, NO TRANSIENT ELECTRICAL LOADS COMMANDED, THE LT GENERATOR AMBER CAUTION LIGHT WAS OBSERVED. ENROUTE TO THE DELTA PATTERN, CONDUCTED GENERATOR FAILURE (SINGLE) CHECKS, BUT THE GENERATOR WOULD NOT RESET. LANDING WASSDR 2012FA0000369Circuit Breaker · failedPILOT REPORTED THE ALTERNATOR FAILED. DURING TROUBLESHOOTING, FOUND THE ALTERNATOR CIRCUIT BREAKER HAD FAILED. CIRCUIT BREAKER WAS INSTALLED 04 APRIL 2009 WITH A TSN OF 2617.5 HRS AND AN ESTIMATED 10470 CYCLES. INSTALLED A NEW ALTERNATOR CIRCUIT BREAKER ANDSDR 2012FA0000366Circuit Breaker · failedPILOT REPORTED THAT THE ALTERNATOR WAS NOT WORKING. DURING TROUBLESHOOTING, FOUND THAT THE ALTERNATOR FIELD CIRCUIT BREAKER SWITCH WAS FOUND TO BE AT FAULT. THE SWITCH WAS INSTALLED ON 07 APRIL 2009 WITH A TSN OF 3098 WITH AN ESTEMATED 12392 CYCLES. INSTALLESDR NSVA20120608551Packing · leakingCREW REPORTED DURING FLIGHT, NR 1 ENGINE OIL PRESSURE INDICATION STARTED TO FLUCUATE, CWP OIL PRESSURE LIGHT ILLUMINATED, STARTED TO RUN QRH. SHORTLY AFTER THE CWP ILLUMINATED, OIL PRESSURE DROPPED BELOW 30 WITH CWP ILLUMINATED. FLIGHT ATTENDANT NOTICED OILSDR CA120510002Alternator · leaking(CAN) A CREWMAN REPORTED A SMALL OIL LEAK FROM THE FRONT OF THE ENGINE AFTER HIS POST FLIGHT INSPECTION. THE CAUSE WAS A BROKEN MOUNT LUG ON THE ALTERNATOR, 1 OF THE 4, USED TO BOLT THE ALTERNATOR TO THE ENGINE. THE REASON FOR THE BREAKAGE IS UNDETERMINED.SDR HLF2012F00000Alternator · failedDURING A WALK AROUND CHECK, FOUND ALTERNATOR CAP/ GUARD MISSING. TAKING A CLOSER LOOK, NOTICED BEARING MISSING FROM SHAFT, UNABLE TO FIND CAP OR BEARING.SDR AMCR2012042504Bearing · seizedGENERATOR REAR BEARING FAILED ON THE RT ENGINE. GENERATOR MOUNTING PAD SHEARED AND GENERATOR SPLIT APART. CREW RECEIVED A GENERATOR FAIL CAS MESSAGE.SDR 2012FA0000231Shaft · shearedPILOT REPORTED LOSS OF RIGHT HAND ALTERNATOR ON FINAL APPROACH TO THE AIRPORT. DURING TAXI OPERATIONS TO THE RAMP THE PILOT REPORTED HEARING A "NOISE" FROM THE FRONT OF THE ACFT. UPON REMOVAL OF THE ALTERNATOR FROM THE ENGINE, IT WAS DISCOVERED THAT THE ALTESDR CA120419005Alternator · failed(CAN) THE RT GENERAL FAIL CAS MESSAGE POSTED ON THE PREVIOUS FLIGHT LEG. THE ACFT WAS DISPATCHED BACK TO HOME BASE WITH THE RT GENERATOR INOPERATIVE IAW MEL 24-31-01. AFTER LANDING GROUND PERSONNEL NOTICED BLACK DIRT AND CARBON DUST ON THE RT ENGINE COWL. POSSDR 2012FA0000182Brushes · disintegratedALTERNATOR FIELD CIRCUIT BREAKER TRIPPED INTERMITTENTLY OVER LAST 25 HRS WITH VARIOUS INSTANCES OF RADIO NOISE. ALTERNATOR REMAINED FUNCTIONAL. SUSPECT POSSIBLE BRUSH FAILURE AND ELECTED TO REPLACE THE ALTERNATOR DURING AN ANNUAL INSPECTION. ALTERNATOR WAS DISDR HNAA2012031600697Generator · malfunctionedNR 1 DC GENERATOR KICKED OFF LINE. CYCLED AND RESET NR 1 DC GENERATOR, POSSIBLE LIGHTNING STRIKE IN FLIGHT. INSPECTED ACFT IAW AMM 05-50-31. NO LIGHTNING DAMAGE FOUND. GROUND RAN ACFT. ALL SYS CHECKED NORMAL. OK FOR SERVICE.SDR REXA2012030200324Alternator · defectiveDID AN AIR TURNBACK DUE TO APR INOP/N1 FLUX/ DCU WARNING, EMERGENCY NOT DECLARED, A/C LANDED SAFELY MX IN MEETING A/C TO BEGIN T/S. REMOVED AND REPLACED NR 2 ALTERNATOR.
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