JASC 2450
Service difficulty reports · 872
Reports filed under 2450 · AC Power Distribution 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 = '2450' 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 = '2450' 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 P5CA9600827Connector · brokenBROKEN CANNON PLUG (D0048P) BACK SHELL NR 4 PYLON. REPAIRED PER BOEING STANDARD PRACTICE 20-31-00.SDR DLM11962311Cables · chafedNR 2 ENGINE GENERATOR FEEDER CABLES CHAFED ABOVE RIGHT HAND OVER WING EXIT. REPAIRED PER ERA 358406 14.SDR 96ZZZX5583Overspeed Button · trippedMCO/ORF - FLT 640 - AT FL 330, DISCONNECTED NR 1 GENERATOR DUE TO UNDER VOLTAGE. ATTEMPTED TO START APU WITH NO RESPONSE. A DIVERSION WAS MADE INTO JAX. MECHANICS TROUBLESHOT SYSTEM AND SERVICED NR 1 CSD. POST-MAINTENANCE ENGINE RUN REVEALED NO PROBLEMS WITSDR SWAA961005Relay · failedAIRCRAFT RETURNED TO IND AND LANDED WITHOUT INCIDENT DUE TO A REPORTED ELECTRICAL SMELL. REPLACED NR 1 TRANSFER BUS RELAY PER BOEING M/M.SDR COMA9660150Relay · malfunctionAC ESSENTIAL BUS CAUTION INDICATOR ON. REPLACED RELAY KIXD SYSTEM, OPERATIONAL CHECK SATISFACTORY.SDR AWXA960396Bus Bar · damagedCMH - FLT 2258 - AIRCRAFT ARRIVED IN CMH WITH NUMEROUS ECAM MESSAGES AND INOP SYSTEMS. AVIONICS COOLING FAN POPPING C/B. DURING TROUBLESHOOTING, FOUND WIRES BURNED AT BUS BAR 2XP-AC BUS 2 (1000XN2). REF WDM 24-51-10. REPAIRED WIRES AND INSTALLED NEW BUS TISDR 96FDEA01390Transformer · failedECAM ANNUNCIATED ENGINE ALERT AND SHOWED ZERO OIL PRESSURE ACCOMPANIED BY ZERO OIL PRESSURE ON COCKPIT GAUGE NR 2 ENGINE SHUTDOWN AS A PRECAUTION IN ACCORDANCE WITH EMERGENCY PROCEDURE. REF WRI 22-10/1361, REMOVED AND REPLACED C/B 6XN AND 26 VOLT TRANSFORMER.SDR MZZA96066Connector · failedGUM - FLT 958 - SITTING AT GATE WITH APU RUNING, APU ELECTRICAL POWER KICKED OFF WITH A PHASE UNBALANCED LIGHT ON, ON ELECTRICAL FAULT PANEL. SHORTLY THEREAFTER, ELECTRICAL SMOKE IN COCKPIT. FOUND T3 TERMINAL ON 'A' PHASE FEEDER CABLE BURNED AT APU GENERATORSDR CALA9601110Harness · failedMAINTENANCE FOUND FEEDER HARNESS BURNT WHILE TROUBLESHOOTING THE APU. A STRINGER AT BELLY OF AIRCRAFT ABOUT 15 INCHES FORWARD OF APU COMPARTMENT AFT OF AFT PRESSURE BULKHEAD WAS FOUND BURNED DUE TO THE FEEDER HARNESS ARCING. A NEW HARNESS WAS SPLICED IN AND SDR SIMA962082Relay · failedORD - FLT 4383 - NR 2 ACW BUS OFF INTERMITTENT IN FLIGHT AND ON GROUND AFTER LANDING. NO EQUIPMENT FAILURES NOTED WITH BUS OFF INDICATION. RAI'D RELAY 6XN IN 94VU. AIRCRAFT WAS RETURNED TO SERVICE. (M)SDR CALA9601055Bus Gen Cont · inoperativeBOTH GENERATOR OFF-LIGHTS ILLUMINATED AND ALL GENERATOR POWER WAS LOST DURING CLIMB AT 9,000 FEET. THE AC CROSSTIE LOCKOUT LIGHT ALSO CAME ON. THE GENERATORS WERE RESET AND OPERATION WAS NORMAL, BUT THE AC CROSSTIE LOCKOUT LIGHT REMAINED ILLUMINATED. THE FLSDR IXXA96122Electrical · odorDURING TAXI IN AT IRD, CREW NOTED A FAINT ACID LIKE SMELL AROUND CIRCUIT BREAKER PANEL. ON GROUND MAINTENANCE POWERED ALL EQUIPMENT, NO ACID LIKE SMELL NOTED. (M)SDR JBXA9600013Gpcu · failedPBI - FLT 888 - AFTER TAKEOFF, THE FOLLOWING OCCURRED: 1. PROXIMITY SWITCH SYSTEM INOPERATIVE. 2. CAB PRESSURE CTL CHAN. 3. GROUND FLT CONTROL. 4. AFCAS MAINTENANCE REQ. 5. NR 2 YAW DAMPENER AND FLIGHT DIRECTOR INOPERATIVE. 6. THREE-CHIME TAKEOFF CSDR AU960934Power Unit · burnt out(AUS) RH NO4 POWER UNIT BURNT OUT CAUSING COMPLETE FAILURE TO THE RH CABIN LIGHTING CIRCUIT - INVERTER PNO 18-994 FOUND UNSERVICEABLE PROBABLY DUE TO THE FAILURE OF POWER UNIT - FOUND DURING INSPECTION IAW AD/ELECT/67 AND ALC IB 90-001SDR CALA9600871Ckt Breaker · failedTHE RT AC BUS 50 AMP CIRCUIT BREAKER, AFT CENTER AND LEFT FUEL BOOST PUMP CIRCUIT BREAKERS POPPED WHILE EN ROUTE. CREW ATTEMPTED TO RESET CIRCUIT BREAKERS WITHOUT SUCCESS. THE AIRCRAFT WAS RETURNED TO EWR WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND SDR 96ZZZX4189Power Relays · misinstalledDURING MAINTENANCE, L-1 ELECTRICAL PANEL (EPC PWR CTR), THE LOWER POWER RELAYS WERE FOUND TO HAVE MASKING TAPE ON CABLES NEAR TERMINAL ENDS. ALSO, FOUND TAPE ON SOME OTHER ELECTRICAL COMPONENTS IN AREA. REMOVED TAPE. NO FURTHER MAINTENANCE REQUIRED. REFERESDR DLM90961337Transfer Relay · failedWHEN THE A/C EMERGENCY PWR IN USE LIGHT CAME ON, PER POM THE EMERGENCY PWR SWITCH WAS PLACED TO THE OFF POSITION. THE EMERGENCY AC BUS OFF LIGHT CAME ON INDICATING THE EMERGENCY AC BUS WAS BEING POWERED FROM THE BATTERY. ACFT WAS DIVERTED TO LAS. REPLACED ASDR PLG51796G1Pdu · failedFLT 4626 - LGA-BTV - IN CRUISE THE LEFT MAIN BUS AND LEFT AVIONICS BUS FAILED. THE AIRCRAFT DIVERTED TO ALB. THE CREW HAD TO PUMP THE GEAR DOWN DUE TO THE BUS FAILURE, LANDING WITHOUT INCIDENT. ALB MAINTENANCE REMOVED AND REPLACED THE LEFT HAND POWER DISTRISDR AU960951Terminal · arcing(AUS) NO1 AC GENERATOR BUS TERMINAL BLOCK `A' PHASE `B' STUD ARCINGSDR 96UAL900268Tie Breaker · damagedCREW REPORTS LEFT ENGINE GENERATOR INOPERABLE AND WILL NOT POWER BUS. THE IDG WAS DISCONNECTED. *S/D* A DAMAGED PIN IN LEFT BUS TIE BREAKER CAUSED INTERMITTENT OPENING OF THE LEFT INTEGRATED DRIVE GENERATOR CONTROL BREAKER. THE INTEGRATED DRIVE GENERATOR BSDR DLM88960892Buss Protect Pnl · malfunctionedAFTER TAKEOFF, CROSS TIE LOCKOUT, GEN AND OR CROSSTIE RELAY CHATTER. TURNED OFF LEFT GEN, RETURNED DFW. REPLACED BUS PROTECTION PANEL, OPERATION NORMAL.SDR 96ZZZX1948Contactor · trips breakerAFTER REPLACING BUS TIE CONTACTOR ON 2-26-96 FOR INTERMITTENT POPPING OF CIRCUIT BREAKER REPLACEMENT, UNIT STARTED RANDOMLY OPENING FOR NO REASON. REPLACED AFTER 30 HOURS OF SERVICE.SDR DL72S960721Circuit Breaker · crackedON FINAL, ALL 3 BUS TIE BREAKERS TRIPPED, PHASE UNBALANCE, OVER EXCITED NR 2 AND NR 3, NR 1 TR UNIT C/B POPPED. FOUND APU GEN BREAKER CRACKED WITH LOOSE CONNECTIONS. REPLACED SAME. ALSO, REPLACED NR 1 ENG GEN BREAKER. RAN ENGS PARALLELED, ALL CHECKS NORMALSDR CAL960430Circuit Breaker · inoperativePHL - FLT 1798 - ALL NORMAL POWER FAILED WHILE EN ROUTE FROM IAH TO PHL, WHEN THE NR 1 NORMAL TRANSFER BUS CIRCUIT BREAKER TRIPPED APPROXIMATELY 300 MILES FROM PHL. THE AIRCRAFT WAS ON BATTERY POWER ONLY. THE AIRCRAFT LANDED AT PHL WITHOUT INCIDENT. MAINTENSDR P5CA9600204Warning Light · inoperativeRETURNED TO BLOCKS DUE TO ADP AND EDP LOW PRESSURE WARNING LIGHTS AND ADP RUN LIGHTS INOP AT FEO PANEL AFTER ENGINE START. CYCLED BETWEEN APU AND ENGINE GENERATORS AND LIGHTS OPERATED NORMALLY.SDR ASOA96009Circuit Breaker · defectiveIN CRUISE FLIGHT ATL-DHN AT 18,000 FEET, EMERGENCY BUS OFF LIGHT ILLUMINATED AND AIRCRAFT LOST ALL EMERGENCY DC BUS 1 POWER. ALL AUXILLARY AND MAIN GENERATORS CONTINUED TO OPERATE NORMALLY. CREW DECLARED AN EMERGENCY, INITIATED A DESCENT TO GET OUT OF ICING,SDR 9606929954Relay · failedEMERGENCY BUS DROPPED OFF LINE AFTER TAKEOFF. FLIGHT RETURNED TO GSO AND LANDED WITHOUT INCIDENT. MAINTENANCE REPLACED R2-47 EMERGENCY TRANSFER RELAY. OPERATIONAL CHECK NORMAL AND AIRCRAFT RETURNED TO SERVICE.SDR 96UAL900178Auto Buss · malfunctionedRIGHT AC AUTO BUS TIE DID NOT PICK UP LOAD WHEN RIGHT GENERATOR TRIPPED. AT CRUISE TRIED TURNING OFF RIGHT BUS WITH APU GEN ON LINE. RIGHT BUS TIE BREAKER WOULD NOT PICK UP POWER FROM OTHER SOURCE WITH BTB SWITCH IN AUTO.SDR COMA9630060Relay · defectiveLEFT MAIN BUS FAILED 4 TIMES AND RESET ITSELF EACH TIME AFTER 4 MINUTES. REPLACED THE TIME DELAY RELAY 71PC.SDR COMA9630057Pdu · defectiveLEFT MAIN ELECTRIC BUS DROPS OFF LINE. REPLACED THE LT POWER DISTRIBUTION UNIT. PART TOTAL CYCLES, 5,920.SDR P5CA9600154Circuit Breaker · failedAIRCRAFT RETURNED TO BLOCKS DUE TO FAILURE OF ALL RADIO/AIR DATA INSTRUMENTS ON CAPTAIN'S SIDE. FOUND ESSENTIAL RADIO BUS C/B OPEN, DUE TO HISTORY OF C/B OPENING REPLACED C/B. CHECKED SYSTEM PER MM 34-13-00 AND 24-50-02.SDR 96ZZZX1634Screw Jack · strippedDURING APROACH, PILOT MOVED FLAP HANDLE TO FIRST DETENT. THE AIRCRAFT ROLLED RIGHT. PILOT USED OVERCENTER ON CONTROL WHEEL TO LEFT TO MAINTAIN STRAIGHT AND LEVEL FLIGHT. INVESTIGATION FOUND RT FLAP INBD SCREW JACK GEARS STRIPPED AND DAMAGED.SDR CA960306021Capacitor · burnt(CAN)ON APPROACH, ELECTRICAL SMELL NOTED IN COCKPIT. RIGHT 26VAC CAUTION LIGHT ON. CB G10 BEHIND CAPTAIN POPPED. FIRST OFFICER LOST AC FLIGHT INSTRUMENTS. IN-LINE CAPACITOR FOR STEP DOWN TRANSFORMER 115/26VAC RIGHT HAND, FOUND BURNT.SDR 96ZZZX4694Contactor · failedINTERMITTENT TRIPPING OF CIRCUIT BREAKER (B85). BUS TIE OPEN. REPLACED BUS TIE CONTACTOR. PROBLEM WENT AWAY.SDR CAL960202Bus Protect Pnl · inoperativeFLT NR 1957 - IAH - ALL THREE BUS TIE BREAKERS TRIPPED AND THE SECOND OFFICERS FAULT ANNUNCIATOR INDICATED A PHASE UNBALANCE WHILE EN ROUTE TO IAH. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE BUS PROTECTION PANEL AT FAULT. THE BUS PROTECTIONSDR 9603989755Bus Contl Pnl · malfunctionedON TAKEOFF ROLL, MASTER CAUTION ILLUMINATED AND SEVERAL LIGHTS STARTED BLINKING. TAKEOFF WAS ABORTED AND RETURNED TO THE GATE. INSPECTED CROSSTIE RELAY, LEFT AND RIGHT GENERATOR RELAYS AND NO DEFECTS FOUND. REPLACED THE LEFT GENERATOR CONTROL PANEL AND VOLTSDR 96ZZZX1457Connector · inoperativeSTABILIZER HEAT LIGHT ON, STAB HEAT CONFIRMED INOPERATIVE. P745 ON GENERATOR CONTROL PANEL FOUND TO BE MAKING POOR CONTACT. THE HEAVY (NR 10) WIRE ON THIS PLUG TENDS TO 'TIP' THE UPPER PORTION AFT CAUSING LOSS OF CONTACT ON THE SHORT PINS IN THIS PLUG. WHENSDR 9603149966Circuit Breaker · damagedDURING CLIMB, LEFT AC BUS CIRCUIT BREAKER POPPED. CREW RESET ALL THREE BREAKERS AND ONE POPPED AGAIN FIVE MINUTES LATER. POWER COULD NOT BE RESTORED TO LEFT AC BUS. FLIGHT RETURNED TO DTW AND LANDED WITHOUT INCIDENT. MAINTENANCE FOUND LEFT AC BUS B-PHASE CSDR AWXA960041Bus Protect Pnl · failedSTL-LAS - FLT NR 940 - NR 2 BUS OFF LIGHT AT GATE WITH APU RUNNING AND BAD ELECTRICAL SMELL IN FLIGHT DECK. STANDBY POWER OFF LIGHT ILLUMINATED ON GROUND. REMOVED AND REPLACED BUS PROTECTION PANEL. OPS CHECK GOOD. (M)SDR UPS805423Panel · malfunctionedCREW REPORTED, LOSS OF ALL GENS IN FLIGHT, ACCOMPLISHED QRH CHECKLIST AND GOT ALL 4 BACK ON LINE. REMOVED AND REPLACED BUSS PROTECTION PANEL. RAN ALL 4 ENG AND ACCOM PREF CHECK, ALL OPS CHECK OK.SDR COMA9660001Relay · failedEMERGENCY LIGHT SYSTEM WILL NOT ARM. AC ESS BUS IS INOP. REPLACED AC SENSOR RELAY KIXD.SDR AWXA9500821Ac Power · malfunctionedSNA/SMF - FLT 0230 - AIR TURN BACK. POWER LOSS OF I.R.U., F.M.C.S., AND SYMBOL GENERATOR. RAW NAVIGATION INFORMATION WAS ALSO LOST. CONTRACT MAINTENANCE AND A.W.A. TECHNICIAN SENT TO T/S. DID BITE CHECK ON ALL FAILED COMPONENTS, NO HARD FAULTS. RESET A/CSDR CA951221007Connector · contaminated(CAN)AFTER START #2 AUXILIARY FUEL PUMP AND #1 STANDBY HYDRAULIC PUMP WOULD NOT WORK. RH AC BUSS FAIL LIGHT ILLUMINATED. CB RESET, BUT DID NOT WORK. PLUG ON #1 AC CONTACTOR BOX CLEANED. THIS FIXED PROBLEM.SDR 95UAL900328Ac Power Syst · malfunctionedDURING INITIAL CLIMB AC BUS NR 3 AND ASSOCIATED LIGHTS RT EMERGENCY, AC AND RT EMERGENCY DC BUS LIGHTS CAME ON. COULD NOT RESTORE THE RT EMERGENCY BUS. FLIGHT RETURNED TO ORD. REPLACED THE GENERATOR CONTROL UNIT AND THE BUS POWER CONTROL AND RECONNECTED THESDR COMA9512027Relay · defectiveTHE NR 2 ELECTRIC BUS OFF WARNING LIGHT ILLUMINATED. REPLACED THE CURRENT PROTECTION RELAY KO128.SDR CAL951141Current Limiter · blownORF - FLT 0443 - THE LEFT ENGINE GENERATOR WAS LOST ACCOMPANIED BY FEEDER FAULT LIGHT AND A CROSS-TIE LOCK OUT WHILE EN ROUTE FROM EWR TO FLL. THE AIRCRAFT WAS DIVERTED TO ORF WHERE IT LANDED WITHOUT INCIDENT. MAINTENANCE FOUND THE AC CROSS-TIE RELAY PHASE CSDR COMA9560610Relay · defectiveESSENTIAL BUS CAUTION MESSAGE IS ON AND THE BUS IS FULLY POWERED. REPLACED THE BUS SENSE RELAY.SDR COMA9511997Current Relays · failedNR 2 ELECTRICAL BUS FAILED. RESET THE NR 2 AND NR 4 OVER CURRENT RELAYS. SYSTEM CHECKS NORMAL AND AIRCRAFT RETURNED TO SERVICE.SDR 95UAL900244Circuit Breaker · burnedFOUND BURNED AND MELTED WIRE INSULATION STARTING AT APU GENERATOR CIRCUIT BREAKER (C803) AND RUNNING APPROXIMATELY 18 INCHES INTO WIRE BUNDLE (BLUE AND YELLOW PHASES). REPLACED APU GENERATOR CIRCUIT BREAKER AND REPAIRED WIRING TO THE CIRCUIT BREAKER. RAN APUSDR 96ZZZM5Bracket · crackedDURING INSPECTION IT WAS NOTED THAT THE CIRCUIT BREAKER BRACKET HAD CRACKED ALLOWING THE CIRCUIT BREAKERS AND WIRING TO BECOME LOOSE IN THE AC CONTACTOR BOX. SUBMITTER STATES, THIS COULD CAUSE A SHORT CIRCUIT OF THE AFFECTED WIRING. A NEW BRACKET WAS FABRICA
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