JASC 2420

Service difficulty reports · 1,302

Reports filed under 2420 · AC Generation System, 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 = '2420'
  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.

SDR 96ZZZX139Control Panel · shortedIN CRUISE, NR 1 GENERATOR LIGHT FLICKERED, ESSENTIAL SWITCHED TO NR 3, NR 3 GENERATOR FAILED. ALL LIGHTS FLICKERED, NR 1 GEN FAILED, AND NR 2 GEN DROPPED OFF LINE. STANDBY POWER SELECTED, NR 2 GEN PUT BACK ON LINE. ELECTRICAL SMELL NOTED IN COCKPIT. ONE GEDec 18, 1995 · N721JE · Boeing 72776SDR 9519259947Elect Terminal · brokenDURING CLIMB, THE RIGHT GENERATOR TRIPPED OFF LINE. RESET RIGHT GENERATOR AND RIGHT BUSS CAME BACK ON LINE. AIRCRAFT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPAIRED BROKEN ELECTRICAL TERMINAL, OPERATIONAL CHECK GOOD.Nov 27, 1995 · N8938E · Doug DC931SDR SWAA950738Relay · malfunctionedEN ROUTE, NUMBER 1 TRANSFER BUSS CIRCUIT BREAKER TRIPPED. RESET BREAKER, BUT TRIPPED AGAIN. CABIN PRESSURE BEGAN TO CLIMB IN AUTO. AIRCRAFT DESCENDED TO 10,000, DIVERTED TO DAL AND MADE AN UNEVENTFUL LANDING. INSPECTED, REPLACED R3 RELAY AND PERFORMED BUSSNov 18, 1995 · N305SW · Boeing 7373H4SDR DLL15954342Harness · shortedNR 2 GEN DISCONNECTED FROM BUS WOULD NOT RESET, VOLTS AND FREQS NORMAL, DIVERTED JFK. FOUND PIN 55 ON B1A GCU RACK CONNECTOR PUSHED BACK AND FOUND PIN 43 ON J1B SHORTED TO GROUND. REPLACED NR 2 GCU RACK HARNESS, RAN ENGINES AND ALL CHECKS GOOD.Nov 11, 1995 · N753DA · Lkheed 10113853SDR 95ZZZM710Relay · malfunctionedUPON ARRIVAL OF FLT 586, TPA TO ATL, EMERGENCY POWER WOULD NOT TURN OFF. MAINTENANCE REPLACED R2-7 TRANSFER BUS SENSE RELAY AND R2-7 GROUND REFUEL RELAY. (M)Nov 11, 1995 · N915VV · Doug DC932SDR RAIA951045Contactor · failedSTL - FLT 7176 - DC BUS NR 2 FAULTED. MAINTENANCE REMOVED AND REPLACED CONTACTOR 12PU. OPERATIONAL CHECK GOOD. (M)Nov 4, 1995 · N421TE · Aerosp ATR42300SDR CA951108006Bracket · cracked(CAN)CIRCUIT BREAKER BRACKET FOUND CRACKED ALLOWING THE CIRCUIT BREAKERS AND WIRING TO COME LOOSE IN THE AC CONTACTOR BOX.Oct 31, 1995 · Dhav DHC8311SDR USAA951004Relay · failedIND - FLT NR 1157 - EN ROUTE LGA TO MCI, NR 1 NORMAL TRANSFER BUS CIRCUIT BREAKER POPPED. CREW RESET BREAKER AND IT POPPED AGAIN. FLIGHT DIVERTED TO IND AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED THE TRANSFER RELAY. RAN ENGINES AND APU. OPS CHECKEDSep 24, 1995 · N376US · Boeing 7373B7SDR CKSA95098Switch · failedKMIA - SMOKE COMING FROM F/E ELECTRICAL PANEL. AFTER REMOVING THE PANEL, TROUBLESHOT AND FOUND SWITCH BURNED. REINSTALLED THE PANEL, DISCONNECTED THE NR 2 AND DMI'D IT IAW 24-1-1 AS ITEM NR 274. (M)Sep 23, 1995 · N6161C · Doug DC8F55SDR 9514296623Relay · malfunctionedTHIRTY MINUTES INTO FLIGHT ESSENTIAL BUS POWER LIGHT ILLUMINATED. THE PROBLEM CONTINUED ON AND OFF FOR SEVERAL MINUTES AND GOT WORSE. CREW FOLLOWED COCKPIT OPERATING PROCEDURE, DUMPED 55,000 LBS OF FUEL AND RETURNED TO LAX. MAINTENANCE REPLACED R79 RELAY, RSep 16, 1995 · N623US · Boeing 747251BSDR GRAA9544Current Limiter · failedAFTER TAKEOFF, MADE A CLIMBING RIGHT TURN THROUGH 2000 FEET MSC. THE AIRCRAFTS LEFT GENERATOR FAILED. MAINTENANCE REMOVED AND REPLACED THE LEFT GENERATOR POWER RELAY, PERFORMED OPERATIONAL CHECK ON THE AC CROSS-TIE SYSTEM, OPERATIONALLY CLEARED NORMAL. MAINSep 11, 1995 · N1070T · Doug DC915SDR GRAA9543Gen Contl Unit · malfunctionedSTS - UPON DESCENT, LT GENERATOR FEEDER FAULT, LT GENERATOR OFF, AND AC CROSS-TIE LOCKOUT ANNUNCIATOR LIGHTS ILLUMINATED. LOST LT SIDE ELECTRONICS. AIRCRAFT DIVERTED TO RNO. MAINTENANCE REPLACED LT GENERATOR CONTROL PANEL, LT BUSS PROTECTION PANEL, AND LT GSep 10, 1995 · N1070T · Doug DC915SDR 95ZZZX6100Buss Prot Pnl · malfunctionedSTS - UPON DESCENT, LT GENERATOR FEEDER FAULT, LT GENERATOR OFF, AND AC CROSS-TIE LOCKOUT ANNUNCIATOR LIGHTS ILLUMINATED. LOST LT SIDE ELECTRONICS. AIRCRAFT DIVERTED TO RNO. MAINTENANCE REPLACED LT GENERATOR CONTROL PANEL, LT BUSS PROTECTION PANEL, AND LT GSep 10, 1995 · N1070T · Doug DC915SDR 95ZZZX6099Power Relay · malfunctionedSTS - UPON DESCENT, LT GENERATOR FEEDER FAULT, LT GENERATOR OFF, AND AC CROSS-TIE LOCKOUT ANNUNCIATOR LIGHTS ILLUMINATED. LOST LT SIDE ELECTRONICS. AIRCRAFT DIVERTED TO RNO. MAINTENANCE REPLACED LT GENERATOR CONTROL PANEL, LT BUSS PROTECTION PANEL, AND LT GSep 10, 1995 · N1070T · Doug DC915SDR USAA950914Current Sensor · failedPIT - FLT 967 - DURING CLIMB-OUT FROM PIT, CREW RECEIVED A STALL WARNING FAULT MESSAGE. CREW WAS ADVISED TO RETURN TO FIELD FOR REPAIRS. NON EMERGENCY AND NO OTHER INCIDENTS. REPLACED VARIOUS COMPONENTS WITH NO HELP. FINAL FIX WAS REPLACEMENT OF LEFT A/C CAug 23, 1995 · N854US · Fokker F28MK0100SDR DLM88953185Generator · failedON CLIMBOUT, NR 2 ENG GENERATOR ON MCO. APU GENERATOR FAILED COULD NOT RESET. DIVERTED ATL. REPLACED APU GENERATOR CONTROL UNIT AND NR 2 ENGINE CSD. OPERATION NORMAL.Jul 25, 1995 · N913DE · Doug MD88SDR CAL950596Gen Contl Pnl · inoperativeGSO - FLT 0402 - THE RIGHT CSD OIL TEMP WENT OFF SCALE HIGH AFTER TAKEOFF FROM MCO. THE CSD WAS DISCONNECTED AND THE APU WAS STARTED TO POWER THE RIGHT AC BUS. THE APU GENERATOR FREQUENCY STARTED FLUCTUATING FULL SCALE DEFLECTION BOTH WAYS. THE APU GENERATOJul 15, 1995 · N16808 · Doug DC982SDR 9510246626Nr 1 Ac/Dc Bus · elect smokeDURING CRUISE, A BURNING ELECTRICAL SMOKE WAS DETECTED IN THE COCKPIT. THE CREW FOLLOWED PROCEDURES AND ISOLATED THE NR 1 GENERATOR, DUE TO HIGH LOAD AND ISOLATED THE NR 1 AC AND DC BUS, THE SMOKE DISSIPATED. AIRCRAFT CONTINUED WITHOUT FURTHER INCIDENT. PERJun 30, 1995 · N626US · Boeing 747251BSDR EGRA95113Control · defectiveAC GENERATOR INTERMITTENT, DROPS OFF LINE. REPLACED AC GENERATOR CONTROL UNIT.Jun 26, 1995 · N176AS · Skrsky S76BSDR 9509989752Wire · brokenLOSS OF LEFT GENERATOR WITH CROSSTIE LOCKOUT OCCURRED DURING TAKEOFF ROLL. ABORTED TAKEOFF AT 80 KNOTS AND RETURNED TO GATE. FOUND BROKEN WIRE AT TERMINAL ON LEFT GENERATOR CURRENT TRANSFORMER. INSTALLED NEW TERMINAL. OPERATIONAL CHECK OK, AIRCRAFT RETURNEJun 15, 1995 · N752NW · Doug DC941SDR 95ZZZX4127Act Bolt · damagedAFT UPPER RUDDER ACTUATOR BOLT IS GALLED AND SCORED. SSI 55-40-105 (INSTALLED BAD BOLT TO FOM). REMOVED AND REPLACED BOLT AND SAFTIED.Jun 12, 1995 · N463AP · Bag BAE146100ASDR 9509379752Wire · brokenSHORTLY AFTER TAKEOFF, LEFT GENERATOR OFF, DC BUS OFF, LEFT AC BUS OFF, AND AC CROSSTIE LOCKOUT LIGHTS ILLUMINATED. INITIATED COCKPIT OPERATING MANUAL PROCEDURES AND TRIED RESTORING GENERATOR BACK ON LINE WITH NO SUCCESS. FLIGHT RETURNED TO YEG AND LANDED WIJun 11, 1995 · N752NW · Doug DC941SDR MALA954488Gcu · failedMSP/YQT - FLT 3084 - IN CRUISE FLIGHT TO YQT, THE LEFT GENERATOR FAIL LIGHT ILLUMINATED. THE CREW WAS UNABLE TO RESET THE GENERATOR. THE AIRCRAFT RETURNED TO MSP. MAINTENANCE REPLACED THE LEFT GENERATOR CONTROL UNIT. SYSTEM OPERATED SATISFACTORILY. (X)Jun 5, 1995 · N27465 · Swrngn SA227ACSDR 95ZZZW793Gen Contl Pnl · failedFLIGHT NR 392 - EN ROUTE FROM FLL-ATL - HAD TO DISCONNECT NR 2 CSD DUE TO ERRACTIC VOLTS AND FREQUENCIES. REMOVED AND REPLACED GENERATOR CONTROL PANEL. (W)May 30, 1995 · N933VV · Doug DC932SDR 9508729924Control Panel · malfunctionedLEFT AC GENERATOR TRIPPED OFF LINE DURING TAKEOFF ROLL AT APPROXIMATELY 80 KNOTS. AFTER CLEARING RUNWAY, GENERATOR WAS RESET AND REMAINED ON LINE. REPLACED THE LEFT GENERATOR CONTROL PANEL AND VOLTAGE REGULATOR. OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SMay 29, 1995 · N926RC · Doug DC932SDR 95UAL767019Idg Feeder · damagedDURING CRUISE RIGHT GENERATOR TRIPPED OFF, UNABLE TO START APU. UNSCHEDULED LANDING WAS MADE AT ORD. PROBLEM CAUSED BY SHORTING OF IDG FEEDER TO THE LEFT CORE COWL. REPLACED FEEDER AND PROPERLY ROUTED.May 17, 1995 · N620UA · Boeing 767222SDR CAL950490Connector · contaminatedEWR - FLT 0305 - WHILE APU WAS POWERING THE LT BUS, WITH LT GENERATOR PLACARDED INOPERATIVE & THE RT GENERATOR COVERING RT BUS, BOTH GENERATORS DROPPED OFF LINE ON TAKEOFF FROM EWR. THE LOSS OF GENERATOR WAS ACCOMPANIED BY ILLUMINATION OF THE APU GENERATOR FEMay 14, 1995 · N10801 · Doug DC982SDR S2YA950003Volt/Freq Meter · knob missingTHE PUSH-TO-READ VOLT BUTTON ON THE A.C. VOLT/FREQUENCY METER EASILY BREAKS OFF OR BECOMES LOOSE AND FALLS OFF. SUBMITTER SUGGESTED THE DESIGN NEEDS TO BE IMPROVED. THREE INSTANCES OF THIS PROBLEM HAS OCCURRED ON DIFFERENT AIRCRAFT ON FLEET. (X)May 12, 1995 · N801SK · Beech 1900DSDR CAL950386Panel · inoperativeFLT NR 0679 - EWR - WHILE OPERATING THE APU, WITH THE NR 1 GENERATOR PLACARDED INOPERATIVE. THE APU GENERATOR FEEDER FAULT LIGHT ILLUMINATED. THE AIRCRAFT WAS RETURNED TO EWR WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE APU GENERATOR CONTROL UNITMay 12, 1995 · N10801 · Doug DC982SDR 9507359754Gen Contl Panel · malfunctionedLEFT AC GENERATOR DROPPED OFF LINE WITH ASSOCIATED CROSSTIE LOCKOUT DURING TAKEOFF ROLL AT 50 KNOTS. ABORTED TAKEOFF AND RETURNED TO GATE. REPLACED THE LEFT GENERATOR CONTROL PANEL. OPERATIONAL CHECK OK. AIRCRAFT RETURNED TO SERVICE.May 1, 1995 · N754NW · Doug DC941SDR WRLA95022Wire · shortedDURING TAXI, CREW NOTED NR 1 AC BUS TIE LOCKED OUT. CREW ELECTED TO RETURN TO GATE FOR MAINTENANCE TROUBLESHOOTING. AIRCRAFT TAXIED TO GATE WITHOUT FURTHER INCIDENT. MAINTENANCE TROUBLESHOOTING DETERMINED THAT WIRE NR 3-16BL WAS SHORTED TO GROUND, BETWEEN GApr 29, 1995 · N271WA · Doug MD11SDR IXKA9500017Wire · brokenMCO - FLT NR 74, AFTER TAKEOFF, NR 1 GEN UNDEREXCITED, ISOLATED GEN LEFT FWD BOOST PUMP CIRCUIT BREAKER POP IN NR 2 TANK, RESET, FORWARD RT BOOST PUMP CIRCUIT BREAKER POPPED, LEFT NR 2 CIRCUIT BREAKER POPPED AGAIN, NR 1 CIRCUIT BREAKER LEFT TANK BOOST PUMP POPApr 28, 1995 · N264US · Boeing 727251SDR TSAA9524075Transformer · inopPILOT REPORTED FLIGHT 88 - HNL-KOA - NR 1 GEN TRIPPED OFF BUS ON TAKEOFF, UNABLE TO RECONNECT. ABORTED TAKEOFF. DEFERRED PER MEL 24-1. TRANSCRIBED TOM-54 NR 03356, PLACARD INSTALLED. REPLACED NR 1 ENGINE CURRENT TRANSFORMER. OPS CHECK OK. PLACARD REMOVEDApr 25, 1995 · N726AL · Boeing 737297SDR DLM88951732Gen Control · failedON CLIMBOUT, LOST RIGHT ENGINE GENERATOR. APU WAS DEFERRED, RETURNED JFK. REPLACED GENERATOR CONTROL UNIT OPERATION NORMAL.Apr 25, 1995 · N918DL · Doug MD88SDR ABXA9500341Crossfeed Cable · corrodedDURING C-CHECK INSPECTION WHILE COMPLYING WITH AD 94-03-01, FOUND LEVEL I CORROSION ON BOTH CROSSFEED CABLES AT STA 598, JUST BELOW LONGERON 19R. CLEANED CABLES IAW DC-9 SRM 51-10-3.Apr 20, 1995 · N983AX · Doug DC932SDR 95ZZZW699Circuit Breaker · failedLEFT AC GEN HAD AN INDICATION FAILURE IN FLIGHT BOS TO BDL, FLIGHT 4864 AND RETURNED TO BOS DUE TO BAD WEATHER IN BDL. FOUND CIRCUIT BREAKER 25HE INLEFT WHEEL WELL BAD. REPLACED BREAKER AMP NO DEFECTS FOUND ON TEST FLIGHT. (W)Apr 19, 1995 · N748BA · Saab SF340ASDR COM31057Wire · shortedRIGHT A/C GENERATOR AND RIGHT INTAKE HEAT FAIL LIGHTS ILLUMINATED. FOUND WIRE SHORTED IN RIGHT WING FLAP COVE, REPAIRED WIRE.Apr 9, 1995 · N359CA · Saab SF340ASDR 95UAL767013Idg · failedIN CRUISE, RIGHT GENERATOR DRIVE LIGHT FLASHING. GENERATOR DRIVE WOULD NOT DISCONNECT. RIGHT GENERATOR CONTROL SWITCH TURNED OFF, APU STARTED. REPLACED IDG, AND GCU. SYSTEM OP CHECKED OK. TESTED UNITS IN SHOP, COULD NOT FIND FAULT. OVERHAULED AS A PRECAMar 27, 1995 · N611UA · Boeing 767222SDR USAA950249Feeder Cable · chafedPIT - FLT 0992 - ON TAKEOFF, THE RIGHT GENERATOR OFF LIGHT ILLUMINATED FOLLOWED BY AC CROSSTIE LOCKOUT. CREW DECIDED TO RETURN TO PIT. FLIGHT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND STOWED LAV DUMP CABLE CHAFING ON GEN FEEDER CABLE. ACCOMPLISHED REPAIRS Mar 19, 1995 · N811US · Doug DC981SDR ABXA9500216Wire · burnedRIGHT GENERATOR DROPPED OFF LINE WITH CROSS-TIE LOCKOUT. SMOKE IN THE COCKPIT REPORTED. FOUND GENERATOR FEEDER CABLES OVERHEATED BEHIND THE GENERATOR CONTROL PANEL. REPLACED TERMINAL ON MAIN FEEDER CABLE. REPLACED CABLE FROM TERMINAL STRIP TO GENERATOR REMar 16, 1995 · N954AX · Doug DC941SDR 9503789906Generators · malfunctionedLEFT AND RIGHT GENERATORS DROPPED OFF LINE DURING TAKEOFF ROLL. ABORTED TAKEOFF AND RETURNED TO GATE. RAN OPERATIONAL CHECK WITH NO PROBLEMS FOUND. AIRCRAFT RETURNED TO SERVICE.Mar 9, 1995 · N956N · Doug DC931SDR DL757950891Connector · failedRIGHT ENGINE GENERATOR HAS HISTORY OF DROPPING OF LINE ON CLIMB-OUT AND CRUISE FOUND PLUG AND RECEPTABLE DAMAGED AND ARCED TOGETHER RIGHT ENG GENERATOR OFF LIT ILLUMINATED PIN B ON CONNECTOR WAS OPEN. CONNECTOR D01292J MFG PN FRF0-36-5P03-747 AND D1092P. REPMar 2, 1995 · N684DA · Boeing 757232SDR 9502689154Relay · failedAC EMERGENCY BUS OFF LIGHT ILLUMINATED AFTER TAKEOFF. THIS PROBLEM AFFECTED MULTIPLE COCKPIT INSTRUMENTS. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED THE AC EMERGENCY TRANSFER RELAY R2-47, CIRCUIT BREAKER B1-185, AND 'A' PHASE CIRCUIT BREAKFeb 15, 1995 · N8913E · Doug DC914SDR 95ZZZM311Gen Contl Unit · off lineNR 1 AC BUS AND ESS AC BUS OFF LINE OCCURRED APPROX 200 FEET PRIOR TO TOUCHDOWN. AIRCRAFT IN LANDING CONFIGURATION APU WAS OPERATIONAL AT THE TIME. RESET NR 1 GCU BUS RESET, GROUND RAN, OPS CHECKS GOOD. AIRCRAFT 73 MINUTES LATE INBOUND DUE TO HEADWINDS. (MFeb 11, 1995 · N615AW · Bag BAE146300ASDR 9502849997Gen Contl Panel · malfunctionedAC CROSSTIE LOCKOUT LIGHT ILLUMINATED ON ROTATION WITH NR 1 CSD DISCONNECTED. FLIGHT RETURNED TO MSP AND LANDED WITHOUT INCIDENT. REPLACED AC CROSSTIE RELAY, RIGHT GENERATOR RELAY, AND RIGHT GENERATOR CONTROL PANEL WITH NO HELP. REPLACED LEFT ENGINE GENERATFeb 11, 1995 · N8933E · Doug DC931SDR DLL17950604Gen Contl Unit · lightning damageDURING CLIMB-OUT LIGHTNING STRUCK AIRCRAFT, HAD NR 3 DIFFERENTIAL FAULT ON GENERATOR WITH ACCOMPANING LOSS OF NR 3 FLIGHT STATION BUS. RETURNED ATL, REPLACED NR 3 GENERATOR CONTROL UNIT, OPERATION NORMAL.Feb 10, 1995 · N766DA · Lkheed 10113853SDR CAL950079Circuit Breaker · failedFLT NR 0461 - EWR - THE AIRCRAFT WAS RETURNED TO EWR AFTER SEVERAL CIRCUIT BREAKERS POPPED IN FLIGHT. RESETTING THE CIRCUIT BREAKERS DID NOT HELP. THE CARGO COMPARTMENT HEATER FAN B AND C, FORWARD RIGHT FUEL BOOST PUMP B AND C, FORWARD CENTER FUEL TANK BOOSTJan 30, 1995 · N16802 · Doug DC982SDR MWEA95115Switch · malfunctionedCAPTAIN'S FLIGHT DIRECTOR INOP. FOUND THAT WHEN EMERGENCY POWER SWITCH IS CYCLED, ALL CONTACTS WOULD NOT TOGGLE BACK TO THE OFF POSITION. REPLACED SWITCH.Jan 26, 1995 · N501ME · Doug DC932SDR MALA954512Gen Contl Unit · failedDTW - FLT 3029 - ON CLIMBOUT, THE NR 1 GENERATOR FELL OFF LINE. THE CREW PERFORMED QUICK REFERENCE PROCEDURES AND RETURNED TO DTW. MAINTENANCE REPLACED THE LT AC GCU. SYSTEM OPERATED SATISFACTORILY. (W)Jan 24, 1995 · N852MA · Dhav DHC8102SDR USAA950032Gcu · failedIND - FLIGHT EN ROUTE PIT TO PHX WHEN NR 1 GENERATOR DROPPED OFF LINE, FOLLOWED BY APU OPERATING INTERMITTENTLY THE SHUTTING DOWN. FLIGHT DIVERTED TO IND WHERE LANDING WAS WITHOUT FURTHER INCIDENT. MAINTENANCE FOUND BENT PIN NR 2213 ON NR 1 ENGINE GCU. REPLJan 22, 1995 · N563AU · Boeing 737301
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