JASC 2424

Service difficulty reports · 480

Reports filed under 2424 · AC Regulator, 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 = '2424'
  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 SRAA971111Voltage Reg · malfunctionedON TAKEOFF ROLL, AFTER ENGINES WERE UP TO SPEED FOR TAKEOFF, ESSENTIAL AC BUSS WENT OFF LINE A , B, C PHASE C/B'S ON ESSENTIAL AC POPPED. REJECTED TAKEOFF AND RETURNED TO BLOCK. TROUBLESHOT ELECTRICAL SYSTEM AND FOUND NR 4 GENERATOR VOLTAGE REGULATOR HAD LOWNov 30, 1997 · N908SJ · Lkheed 382ESDR 9721872715Regulator · failedDURING TAKEOFF ROLL, NUMBER THREE GENERATOR DROPPED OFF LINE. TAKEOFF WAS ABORTED AND RETURNED TO GATE WITHOUT INCIDENT. REPLACED NUMBER THREE GENERATOR VOLTAGE REGULATOR, OPERATIONAL CHECK OK.Nov 22, 1997 · N719RC · Boeing 7272S7SDR VTZA97629Gcu · failedFLT 6281 - IAD-HPN - DURING TAXI, AIRCRAFT RETURNED TO GATE DUE TO LEFT GENERATOR WOULD NOT COME ON LINE. MAINTENANCE INSPECTED AND REMOVED AND REPLACED GCU, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPROVED FOR RETURN TO SERVICE. (M)Nov 8, 1997 · N497UE · Bag JETSTM3201SDR C2XA97CL084Gcu · failedCLE - FLT 3266 - CREW REPORTED THAT THE RIGHT MAIN GENERATOR FAILED IN FLIGHT AND WOULD NOT RESET. AIRCRAFT RETURNED TO FIELD WITHOUT FURTHER INCIDENT. MAINTENANCE INSPECTED THE AIRCRAFT AND THEN REMOVED AND REPLACED THE RIGHT GENERATOR CONTROL UNIT IAW EMB-Oct 24, 1997 · N19704 · Emb EMB120RTSDR USAAD97182Gen Contl Unit · inoperativeCLT - FL 1005 - EN ROUTE CLT-SRQ, THE LEFT GENERATOR TRIPPED THE LEFT AC BUS AND LEFT GENERATOR OFF. THE LEFT GENERATOR OFF LIGHT ILLUMINATED. AFTER STARTING THE APU, NO APU BLUE LIGHT ILLUMINATED ALTHOUGH THE APU WAS AT 98 PERCENT AND APU EGT WAS NORMAL. AOct 18, 1997 · N825US · Doug DC982SDR CALA9701401Gcu · inoperativeTHE NR 1 GENERATOR FAILED WHILE EN ROUTE FROM EWR TO ORD. THREE ATTEMPTS TO RESET WERE UNSUCCESSFUL. THE AIRCRAFT WAS DIVERTED TO BUF WHEN ELECTRICAL FUMES AND SMOKE DEVELOPED. THE AIRCRAFT LANDED WITHOUT INCIDENT. THE NR 1 GCU AND THE BATTERY CHARGER WEREOct 1, 1997 · N59338 · Boeing 7373T0SDR USAASB97270Gen Contl Unit · failedORD - (FL 1802) - DURING CLIMB-OUT AT FL 1,700, SMOKE WAS COMING FROM THE RIGHT GENERATOR CONTROL PANEL. THE CONTROL PANEL WAS PULLED AWAY FROM THE WALL AND THE SMOKE STOPPED. THE CREW DECLARED AN EMERGENCY AND RETURNED TO FIELD ORD. THE FLIGHT LANDED WITHOUSep 28, 1997 · N269AU · Boeing 7372B7SDR W8PA971441Gcu · failedNR 1 GEN TRIPPED OFF. INDICATIONS WERE 115 VOLTS AND 390 CYCLES, GEN WOULD NOT RESET. APU GEN IS ON MEL. REPLACED NR 1 GCU OPS CHECK GOOD. RESEATED APU GCU AND CLEARED DMI ON APU GEN.Sep 23, 1997 · N946WP · Boeing 737317SDR WTAA970175Gcu · failedLAX - RIGHT GENERATOR FAILED AFTER TAKEOFF. AIRCRAFT RETURNED TO STATION. DEFERRED RIGHT ENGINE GENERATOR PER MEL 24-30-1. AIRCRAFT RETURNED TO SERVICE. MAINTENANCE CLEARED DEFERRAL BY REPLACING RIGHT GENERATOR CONTROL UNIT. OPERATIONAL CHECK SATISFACTORYSep 3, 1997 · N268UE · Emb EMB120RTSDR RAIA970837Gcu · failedFLT 4732 - RIGHT GENERATOR FELL OFF LINE WOULD NOT RESET. MAINTENANCE REPLACED RIGHT GENERATOR CONTROL UNIT. (M)Aug 31, 1997 · N859AE · Bag JETSTM3201SDR REXA97223Gcu · inopLEFT GENERATOR KEEPS FALLING OFF LINE IN FLIGHT. REMOVED AND REPLACED GCU. (M)Aug 11, 1997 · N307PX · Bag JETSTM3101SDR VTZA97439Gcu · failureIAD/RDU - FLT 6573 - DURING TAKEOFF AT 0955 HOURS ON 8-1-97, AIRCRAFT ABORTED TAKEOFF DUE TO RT GENERATOR FAILED DURING TAKEOFF. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED GCU. OPS CHECK OK. AIRCRAFT Aug 1, 1997 · N484UE · Bag JETSTM3201SDR REXA97215Gcu · malfunctionedRIGHT GEN ERRATIC OUTPUT AND ASSOCIATED AMMETER AND CAP PANEL INDICATION. WOULD NOT RESET. REMOVED AND REPLACED RIGHT GCU. OPS CHECKED GOOD. OK FOR CONTINUED SERVICE. (M)Jul 28, 1997 · N307PX · Bag JETSTM3101SDR USAASB97208Gcu · failedCLT - FLT 1514 - EN ROUTE, CREW NOTICED AN ELECTRICAL SMOKE ODOR IN COCKPIT. THE PROBLEM WAS ISOLATED TO A GENERATOR CONTROL UNIT AND THE CIRCUIT BREAKER WAS PULLED. THE FLIGHT CONTINUED TO CLT WITHOUT FURTHER INCIDENT. AS A PRECAUTIONARY MEASURE, AN EMERGEJul 27, 1997 · N335US · Boeing 737301SDR 9714689854Relay · failedON TAKEOFF ROLL BELOW 60 KNOTS, ALL INSTRUMENT LIGHTS FLICKERED ON AND OFF. MOMENTARILY BOWTIE LIGHTS AND MASTER CAUTION FLICKERED WITH OTHER LIGHTS. ABORTED TAKEOFF AND RETURNED TO THE GATE. MAINTENANCE REPLACED THE LEFT GENERATOR CONTROL RELAY AND CROSSTIJul 26, 1997 · N763NC · Doug DC951SDR REXA97202Connector · dirtyRIGHT GENERATOR FAILED ON CLIMB-OUT. CLEANED CANNON PLUGS ON GCU. (X)Jul 19, 1997 · N110PX · Saab SF340ASDR 97FDEA00429Voltage Reg · inoperative97-0129 AFTER CLIMB POWER WAS SET NR 1 BUS TIE. NR 1 GENERATOR SWITCH, AND NR 1 FIELD RELAY TRIPPED OFF. PERFORMED RED TABS. FIELD RELAY WOULD NOT COME BACK ON LINE. DISCONNECTED NR 1 CONSTANT SPEED DRIVE AND RETURNED. RECONNECTED NR 1 CONSTANT SPEED DRIJul 15, 1997 · N477FE · Boeing 727227SDR AALA971258Gcu · failedGEN DRIVE LIGHT RIGHT SIDE DISCONNECTED IDG. PLACARD RT IDG INOP IAW MEL SERVICED LEFT AND RIGHT IDGS TO FULL SERVICED APU TO FULL. NO RESCENT HISTORY. NO FAULT FOUND ON LEFT IDG OR APU. ENTERED ITEM ONTO MIC SHEET. REPLACED RT GEN CONTROL UNIT OPS CHECKEJul 12, 1997 · N324AA · Boeing 767223SDR TSAA9724147Gcu · failedFLT 40 - HNL-ITO - SWITCHING FROM EXTERNAL TO APU ELECTRICAL POWER, SMOKE BEGAN BELLOWING OUT OF CIRCUIT BREAKER PANEL NEAR THE G-5 GENERATOR CONTROL BOX, POWER SECURED. REPLACED GCU. OPS CHECK OK. AIRCRAFT RETURNED TO SERVICE. (M)Jun 28, 1997 · N818AL · Boeing 737230CSDR CALA9700973Gcu · inoperativeWHILE OPERATING THE APU, WITH THE NR 2 GENERATOR PLACARDED INOPERATIVE, THE APU GENERATOR DROPPED OFF LINE ENROUTE FROM PDX TO IAH. THE GENERATOR COULD NOT BE RESTORED. THE CREW ELECTED TO DIVERT TO DFW DUE TO BAD WEATHER AT IAH. THE AIRCRAFT LANDED WITHOUJun 26, 1997 · N77303 · Boeing 7373T0SDR RAIA970625Gcu · failedSTL - FLT 7156 - LEFT ACW GENERATOR FELL OFF LINE, WOULD NOT RESET. MAINTENANCE REPLACED LEFT ACW GENERATOR CONTROL UNIT. (X)Jun 25, 1997 · N721TE · Aerosp ATR72202SDR 97FDEA00353Gen Contl Unit · malfunctionON TAXI OUT, NR 2 GENERATOR FAULT CAME ON. GENERATOR NR 2 WAS UNABLE TO RESET. PROCEDURE CALLED FOR NR 2 BUSS TO BE POWERED BY APU. ON T/O APU MOMENTARILY DROPPED OFF NR 2 CAUSING SPOILER FAULT LIGHTS, PITCH TRIM, YAW DAMP, WINDOW HEAT ETC TO TRIP OFF. T/OJun 18, 1997 · N658FE · Airbus A300*SDR 97ZZZM764Gen Contl Unit · failedLEFT GENERATOR INOPERATIVE, REPLACED GENERATOR CONTROL UNIT.Jun 17, 1997 · N837CA · Beech 1900DSDR MALA975464Gcu · failedFLT 3003 - DURING FLIGHT, THE RIGHT AC GENERATOR FELL OFF LINE AND WILL NOT RESET. AIRCRAFT RETURNED TO MSP. MAINTENANCE REMOVED AND REPLACED NR 2 GCU. OPS CHECK GOOD. (X)Jun 13, 1997 · N824MA · Dhav DHC8102SDR 97ZZZM765Gen Contl Unit · failedRIGHT GENERATOR WILL NOT COME ON LINE. FOUND GENERATOR CONTROL UNIT TO BE INOPERATIVE.Jun 10, 1997 · N847CA · Beech 1900DSDR USAABB97068Gen Control Unit · failedPHX - FL 1, AIRCRAFT WAS OPERATING PIT TO LAX WITH THE RIGHT IDG ON MEL AND THE APU OPERATING. IN CRUISE BETWEEN ABQ AND PHX, CREW RECEIVED THE LEFT GENERATOR 'OFF' LIGHT. FLIGHT DIVERTED TO PHX AND LANDED WITH NO FURTHER INCIDENT. MAINTENANCE REPLACED THE Jun 5, 1997 · N616AU · Boeing 7572B7SDR RAIA970515Gcu · faultySTL - FLT 7380 - LEFT ENGINE TORQUE BUGS FLUCTUATE WITH RIGHT ENGINE RUNNING. REPLACED RIGHT GENERATOR CONTROL UNIT. (X)May 20, 1997 · N425TE · Aerosp ATR42300SDR USAAD97090Gen Control · failedFLT 417 - FLL-PIT - CLIMBING THROUGH FL270, THE NR 2 GENERATOR WENT OFF LINE. TRIED TO BRING APU ONLINE, BUT FAILED DUE TO TWO OVERSPEEDS. DIVERTED TO CLT. REPLACED THE RIGHT GCU, AND RESET CROSSTIE LOCKOUT. (M)May 19, 1997 · N803US · Doug DC981SDR 97UAL900355Voltage Reg · malfunctionedRETURNED TO BLOCKS DUE TO NR 3 FIELD DROPS OFF. UNDER VOLTAGE LIGHT ON. REPLACED VOLTAGE REGULATOR DUE TO FAILURE.May 7, 1997 · N7443U · Boeing 727222SDR 97UAL900335Circuit Breaker · failedAIRCRAFT RETURNED TO SFO AFTER BOTH UTILITY BUS OFF LIGHTS CAME ON DURING TAKEOFF. *S/D* LEFT GENERATOR CONTROL BREAKER AUXILIARY CONTACT FAILED. REPLACED LEFT AND RIGHT GENERATOR CONTROL BREAKERS.Apr 27, 1997 · N663UA · Boeing 767322SDR 9707571230Gen Contl Unit · malfunctionedDURING CLIMB, THE NR 2 GENERATOR OFF LIGHT ILLUMINATED AND THE AC BUS TIE ISOLATION LIGHT ILLUMINATED. NR 3 GENERATOR ON A PREVIOUS MEL. AIRCRAFT DUMPED 19,000 LGS OF FUEL AND RETURNED TO HNL. MAINTENANCE SWAPPED THE APU GCU WITH THE NR 2 GCU. BOTH NR 2 ANApr 14, 1997 · N230NW · Doug DC1030SDR TWAA9715001Gen Control · failedSTL - FLT 1058 - ON TAKEOFF ROLL, LOST RIGHT AC AND RIGHT DC BUSSES. ALSO, HAD A CROSS TIE LOCKOUT. REPLACED RT GENERATOR CONTROL MFG PN 976J254-4. (M)Mar 31, 1997 · N923TW · Doug DC982SDR CA970409011Gcu · wet(CAN) AFTER TAKEOFF RAT DEPLOYED DUE TO #3 GENERATOR LOST WITH DIFFERENTIAL LIGHT AND #3 FLIGHT STATION BUS LIGHT ON. #3 GCU SOAKED WITH #2 LAVATORY WASTE WATER, LAVATORY OVER SERVICED. #3 GCU REPLACED.Mar 28, 1997 · Lkheed 10113853SDR AU970302Diode · shorted(AUS) GENERATOR CONTROL UNIT FAULTY - INVESTIGATION FOUND DIODE CR907 SHORT CIRCUITED ALLOWING TRANSFORMER T901 TO OVERHEATMar 8, 1997 · Boeing 737377SDR USAABB97019Gen Contl Unit · failedSFO - FL 76 - DURING CLIMB-OUT FROM SFO, FAINT OIL SMELL NOTED IN CABIN. PASSING THROUGH FL 220, THE EICAS MESSAGES 'R ENG EEC' AND 'R ENG LIMITER' APPEARED, AS WELL AS THE EEC 'INOP' LIGHT. THE RIGHT EGT WAS NOTED TO BE IN THE YELLOW RANGE. FLIGHT RETURNEDFeb 19, 1997 · N618AU · Boeing 757225SDR MALA975293Gcu · failedFLT 3453 - FOLLOWING LIFTOFF, DC BUS LIGHT ON ANNUNCIATOR PANEL ILLUMINATED. CREW FOLLOWED QUICK REFERENCE PROCEDURES AND RETURNED TO DTW. MAINTENANCE REMOVED AND REPLACED NR 1 GCU. RAN AIRCRAFT SEVERAL MINUTES. ALL CHECKS GOOD. (M)Jan 18, 1997 · N824MA · Dhav DHC8102SDR 97UAL900052Gen Contl Unit · shortedAT 16,000 FEET DURING CLIMB OUT OF ORD, LOST ELECTRICAL POWER. NR 1 AC BUS, NR 1 TR AND AC ESSENTIAL BUS WERE NOT POWERED. APU WOULD NOT START. SELECTED ALTERNATE POSITION OF AC ESSENTIAL FEED SWITCH. AFTER AC ESSENTIAL BUS WAS POWERED APU STARTED AND WAJan 18, 1997 · N427UA · Airbus A320232SDR CALA9700067Gcu · inoperativeSMOKE AND FUMES MOMENTARILY APPEARED IN THE COCKPIT DURING A STANDBY POWER CHECK WHILE AIRCRAFT WAS AT GATE. MAINTENANCE FOUND THE APU GENERATOR CONTROL UNIT AT FAULT. THE APU GCU WAS REMOVED AND REPLACED, GROUND CHECK WAS GOOD.Jan 16, 1997 · N59207 · Boeing 737130SDR 97FDEA00010Gcu · failedNR 2 GENERATOR FAILED, NO RESET. REMOVED AND REPLACED NR 2 GCU, OPS CHECK NORMAL.Jan 4, 1997 · N407FE · Airbus A310203SDR VTZA96464Gcu · failedFLT 6454 - IAD-CLE - DURING CLIMB, AN UNSCHEDULED LANDING DUE TO RIGHT GEN, RIGHT GCU, AND RIGHT PDU FAILED. AIRCRAFT RETURNED TO GATE WITH NO FURTHER PROBLEMS. MAINTENANCE INSPECTED AND REMOVED AND REPLACED GCU, OPS CHECK OK. AIRCRAFT WAS RELEASED AND APPRDec 29, 1996 · N302UE · Jetair JETSTM4101SDR NVEA9600009Gcu · inoperativeCAPT REPORTED, RT GEN RELAY WAS CHATTERING. TOOK THE RT GEN OFF LINE AND THE BTC WOULD NOT COUPLE. DEPARATED DCA TO JFK AND DIVERTED TO BWI. NO EMERGENCY WAS DECLARED AND NO FURTHER INCIDENT. REMOVED AND REPLACED GENERATOR CONTROL UNIT, OPS CHECKS GOOD.Dec 9, 1996 · N249AT · Aerosp ATR42300SDR ARWA9611006Connector · looseAIR TURNBACK ON ROTATION, NR 4 GENERATOR WARNING. DID A GO-AROUND AND LANDED WITHOUT INCIDENT. ACCOMPLISHED OVERWEIGHT LANDING INSPECTION, NO DEFECTS NOTED. FOUND NR 4 GCU CENTER CANNON PLUG LOOSE. RECONNECTED, RAN ALL ENGINES AND CHECKED ELECTRICAL SYSTEMNov 22, 1996 · N345JW · Doug DC863SDR USAASB96238Gcu · failedPIT- FL 1082 - CAPT REPORTED THAT IT TOOK TWO ATTEMPTS TO GET THE NR 1 ENG GEN ON LINE AFTER ENG START. ON CLIMB-OUT, CREW DETECTED A BURNING PLASTIC LIKE SMELL IN THE COCKPIT. NO SMOKE WAS PRESENT. F/O FELT GEN CONTROL UNIT G3 AND OBSERVED THAT IT WAS HOT.Nov 19, 1996 · N432US · Boeing 7374B7SDR MALA965202Gcu · malfunctionedFLT 3370 - EN ROUTE, THE NR 1 AC GEN LIGHT ILLUNMINATED. THE CREW RESET THE GENERATOR AND THEN THE NR 2 AC BUS, RT HORN, AND RT STALL LIGHTS ILLUMINATED. A FEW MINUTES LATER THE LEFT AC BUS AND ASSOCIATED LIGHTS ILLUMINATED. THE AIRCRAFT RETURNED TO MSP. MNov 14, 1996 · N824MA · Dhav DHC8102SDR MWEA96630Voltage Reg · inoperativePILOT REPORTS LEFT ENGINE GENERATOR DROPPED OFF LINE JUST BEFORE TAKEOFF. RETURNED TO GATE. MAINTENANCE REMOVED AND REPLACED LT VOLTAGE REGULATOR, OPS CHECK GOOD.Nov 12, 1996 · N400ME · Doug DC914SDR 96FDEA01656Gcu · water contamNR 1 GENERATOR TRIPPED OFF LINE 2-3 MINUTES AFTER TAKEOFF. BUS TIE WOULD NOT CLOSE PER CHECKLIST. FINALLY DID CLOSE BUT FIELD WOULD THEN NOT CLOSE WITH GOOD RESIDUAL VOLTS. REMOVED AND CLEANED WATER FROM GCU. REINSTALLED, OPS CHECKED NORMAL PER JRH 8-3.Nov 7, 1996 · N189FE · Boeing 72722SDR WTAA960187Gen Contl Unit · failedSMF - RIGHT GENERATOR CONTROL UNIT FAILED DURING TAKEOFF. TAKEOFF ABORTED. AIRCRAFT FERRIED TO SFO. MAINTENANCE REPLACED RIGHT GENERATOR CONTROL UNIT. OPERATIONAL CHECK SATISFACTORY. AIRCRAFT RETURNED TO SERVICE. (M)Nov 1, 1996 · N403UE · Bag JETSTM3101SDR 9623085513Gcu · malfunctionedAFTER TAKEOFF, THE RIGHT AC BUS OFF LIGHT, BOTH UTILITY BUS LIGHTS AND THE RIGHT GENERATOR CONTROL LIGHT ILLUMINATED. FOLLOWED COCKPIT OPERATING MANUAL PROCEDURES BUT WAS UNABLE TO RESTORE THE RIGHT AC BUS. AIRCRAFT DIVERTED TO SEA AND LANDED WITHOUT INCIDENOct 26, 1996 · N513US · Boeing 757251SDR AALA961545Gen Contl Unit · defectiveJFK - FLT 611 - AFTER TAKEOFF JFK DURING CLIMB-OUT, NR 2 ENGINE GENERATOR FAULT ACCOMPANIED BY REPORT OF BURNING ODOR IN CABIN. AIRCRAFT RETURNED TO JFK AND LANDED WITHOUT INCIDENT. REPLACED NR 2 GENERATOR CONTROL UNIT. SYSTEM GROUND CHECKED NORMAL OPERATIOOct 22, 1996 · N7062A · Airbus A300B4605RSDR UPS96821370Gcu · malfunctionedINSPECTION TYPE N/A, GEN UNPARALLEL LIGHT ILLUMINATED ON DECENT. AC LOAD AND FREQ WENT TO ZERO, STARTED GETTING AN ELECT BURNING SMELL, SO WE DISCONNECTED GENERATOR. REMOVED AND REPLACED VR AND GCU, RAN ENG AND OPS CHK GOOD. THIS CLEARS M-117170, (P/N 51508Oct 17, 1996 · N806UP · Doug DC873F
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