Pratt & Whitney PW4090

Service difficulty reports · 1,399

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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 engine_model_key = 'PW4090'
  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 2000UALA00445Brake · overheatedUPON ARRIVAL AT DEN, HOT BRAKES, SMALL FLAMES AND SOME SMOKE REPORTED AT OUTBOARD WHEELS ON RIGHT MAIN LANDING GEAR. FLAMES SELF-EXTINGUISHED WITH NO DAMAGE TO AIRCRAFT. *S/D* UNABLE TO DETERMINE ANY DEFINITIVE CAUSE. LT AND RT MAIN LANDING GEAR WHEEL AND Jul 22, 2000 · N788UA · Boeing 777222 · Landing Gear Brake SystemSDR 2000UALA00419Video Unit · overheatedAFTER DEPARTURE EXPERIENCED SMOKE IN CABIN FROM ENTERTAINMENT SYSTEM UNDERSEAT ELECTRONIC UNIT AT SEAT 17AB. AIRCRAFT RETURNED TO FIELD. *S/D* FILTER CAPACITORS IN THE POWER SUPPLY FAILED CAUSING OVERHEAT DAMAGE TO THE CIRCUIT BOARD. THE VIDEO DISTRIBUTIONJul 12, 2000 · N798UA · Boeing 777222 · Entertainment SystemSDR 2000UALA00405Connector · failedEN ROUTE IAD-CDG, AIRCRAFT RETURN TO FIELD FOR LOSS OF RIGHT HAND DUCT PRESSURE AND STATUS MESSAGE TRIM AIR R. *S/D* FIM 36-22, TASK 801 ACCOMPLISHED. REPLACED MANIFOLD DUAL TEMPERATURE SENSOR (P/N:1150322-1), OPS CK GOOD. THE FAILED SENSOR HAS BEEN TESTEJul 6, 2000 · N205UA · Boeing 777222 · Cabin Temperature Control SystemSDR 2000UALA00369Slide · leakingDURING SHOP OVERHAUL DOOR 4 RT SLIDE/RAFT ASSEMBLY (P/N: 62774-402, S/N: 0222) FAILED AIR RETENTION TEST. THE INFLATABLE ASSEMBLY (62424-402) TOP TUBE ASPIRATOR FLAPPER VALVE AND ASPIRATOR FLANGE WERE FOUND LEAKING (ASPIRATOR P/N: 62510-101). UNIT RETURNED TJun 26, 2000 · N785UA · Boeing 777222 · Escape SlideSDR 2000UALA00338Connector · dirtyFLIGHT DEPARTED LHR WITH LEFT GENERATOR DEFERRED INOPERATIVE. SHORTLY AFTER DEPARTURE, RIGHT GENERATOR FAILED. RETURNED TO LHR. *S/D* THE FAULT ISOLATION CODE INDICATED A DIFFERENTIAL CURRENT FAULT. THE CAUSE WAS A VERY DIRTY CONNECTOR ON THE R-ENGINE CORJun 15, 2000 · N786UA · Boeing 777222 · AC Generator-AlternatorSDR 2000UALA00332Oxygen Bottle · leakingEN ROUTE SFO-FRA, CREW REPORT CREW OXYGEN SHOWING 450 PSI. SHOULD READ 1250 PSI. DIVERTED TO BGR. *S/D* OXYGEN WAS SERVICED PER AMM 12-15-08. CHECKED COCKPIT OXYGEN MASK, NO LEAKS FOUND. ENGINEER ASSIGNED TROUBLESHOOTING TASK TO ACCOMPLISH FIM 35-11, TASJun 12, 2000 · N787UA · Boeing 777222 · Crew Oxygen SystemSDR 2000UALA00298Battery · inoperativeAFTER DEPARTURE LAX (LAX-LHR), CREW RECEIVED MESSAGE OF MAIN BATTERY FAILURE. AIRCRAFT RETURNED TO LAX. *S/D* BOTH THE MAIN BATTERY AND THE MAIN BATTERY CHARGER SHOWED MAINTENANCE MESSAGES SAYING THEY WERE DEFECTIVE. REPLACED BOTH THE MAIN BATTERY (263BA10Jun 2, 2000 · N797UA · Boeing 777222 · Battery/Charger SystemSDR 2000UALA00269Tube · leakingDURING SHOP OVERHAUL, SLIDE/RAFT (P/N 62774-414), (S/N 0224), TOP TUBE FAILED AIR RETENTION TEST. FOUND A SEAM LEAK AT SEAM JOINT BETWEEN TOP ASPIRATOR TUBE AND MAIN TOP TUBE (P/N 62424-408). UNIT RETURNED TO VENDOR FOR WARRANTY REPAIR. UNIT WAS LAST OVERHAMay 18, 2000 · N790UA · Boeing 777222 · Escape SlideSDR 2000UALA00262Oven · dirtyBURNING SMELL IN GALLEY AREA. CIRCUIT BREAKERS PULLED AND SMELL SUBSIDED. *S/D* PLASTIC FOOD WRAP STUCK IN BACK OF OVEN CAUSING SMELL. REPLACED OVEN.May 12, 2000 · N788UA · Boeing 777222 · Buffet/GalleysSDR 2000UALA00242Light · missingEMERGENCY LIGHT (FLOOR PROX) AT 2F MISSING. REPLACED LIGHT ASSEMBLY AT 2F, OPERATIONAL CHECK NORMAL.May 10, 2000 · N785UA · Boeing 777222 · Emergency LightingSDR 2000UALA00132Control Panel · shortedWHILE EN ROUTE, FLIGHT EXPERIENCED HOT ELECTRICAL SMELL/HEAT AT CABIN AREA CONTROL PANEL DOOR 4R AREA. PULLED CIRCUIT BREAKER AND SMELL/HEAT DISAPPEARED. *S/D* INSULATION AT THE BASE OF THE LAMPS OVERHEATED DUE TO THE FAILURE OF THE LAMP. THE CACP WAS REPLMar 15, 2000 · N796UA · Boeing 777222 · Entertainment SystemSDR 2000UALA00051Wire · chafedWHILE TROUBLESHOOTING INOPERATIVE FLUORESCENT LIGHT AT DOOR ONE LEFT, FOUND WIRE BUNDLE (W3251) ABOVE DOOR ONE LEFT WITH CHAFED AND BROKEN WIRES AND EVIDENCE OF OVERHEAT. *S/D* REPORTED THAT CONNECTOR BRACKET CRUSHED WIRE BUNDLE AGAINST FRAME OF FUSELAGE. Feb 2, 2000 · N785UA · Boeing 777222 · Light System WiringSDR 20000404SH015Manifold · leakingFIRE WARNING ON TAKEOFF, BOTTLES DISCHARGED, AIR TURN BACK. DISASSEMBLY INSPECTION REVEALED MANIFOLD NUT BACKED OFF, NOT SAFETY WIRED. PRATT & WHITNEY ENG/MFG REVIEWING. SUSPECT ASSEMBLY ERROR. (X)Jan 19, 2000 · Boeing 777* · Engine Fuel DistributionSDR 2000UALA00021Trim Tab · malfunctionedAIRCRAFT ELEVATOR TRIM IS LOCKED AT 4.5 DEGREES. FLIGHT RETURNED TO DEN. *S/D* INITIAL EVALUATION DID NOT UNCOVER ANY FAULT MESSAGES RELATED TO THE AIRPLANES STABILIZER OR FLIGHT CONTROLS. MAINTENANCE ACCOMPLISHED PRIMARY FLIGHT COMPUTER TESTS, ACTUATOR COJan 16, 2000 · N789UA · Boeing 777222 · Elevator Tab Control SystemSDR 99UAL900669Switch · failedAFTER TAKEOFF FROM CDG UNABLE TO GET WATER PRESSURE TO GALLEYS OR LAVS. DUMPED FUEL AND DIVERTED TO LHR. *S/D* CAUSE WAS DETERMINED TO BE THE QUANTITY/PRESELECT SWITCH (P/N: 42HY331448-3) NOT BEING IN THE OFF/RESET POSITION. THIS CAUSED THE PRESELECT OVERFDec 26, 1999 · N794UA · Boeing 777222 · Air Supply (Water Pressure System)SDR 99UAL900622Heat Exchanger · failedON GROUND, AC PACK NOISE FOLLOWED BY SUBSEQUENT PACK SHUT DOWN AND EICAS MESSAGE RT DUCT LEAK. *S/D* FOUND RIGHTHAND HEAT EXCHANGER (P/N 810208-2 ) PRIMARY INLET TORN, INITIAL EXAM REVEALED THAT THE DAMAGE STARTED FROM THE V-NOTCH AREA. THE RT HEAT EXCHANGERDec 1, 1999 · N796UA · Boeing 777222 · Cabin Cooling SystemSDR 99UAL900584Structure · damagedMAJOR REPAIR TO AFT LOWER FUSELAGE DUE TO TAIL CONTACTING RUNWAY AT TAKEOFF.Nov 5, 1999 · N784UA · Boeing 777222 · Fuselage Main, StructureSDR 99UAL900571Bypass Valve · failedNOSE GEAR DISAGREE LIGHT ON. FLY-BY CONFIRMED NOSE GEAR NOT DOWN AND DOORS NOT OPEN. GEAR WAS EXTENDED BY ALTERNATE METHOD. *S/D* NOSE LANDING GEAR FAILED TO EXTEND DUE TO A FAILURE OF THE NOSE LANDING GEAR SELECTOR BYPASS VALVE (3910028-101). THE SELECTONov 2, 1999 · N205UA · Boeing 777222 · Landing Gear Retraction/Extension SystemSDR 99UAL900527Light · inopEMERGENCY LIGHT OUTSIDE DOOR 1L WAS INOPERATIVE. *S/D* FOUND SOME LIGHT CORROSION IN SOCKET. CLEANED OUT SOCKET AND REPLACED BULB. OPERATIONAL CHECK WAS SATISFACTORY.Oct 13, 1999 · N796UA · Boeing 777222 · Emergency LightingSDR 99UAL900528Wire · looseEMERGENCY LIGHTS AT SEATS 1EF AND 2F ARE INOPERATIVE. *S/D* SECURED WIRES IN CENTER BETWEEN SEATS 2B, C. ALL LIGHTS OPERATIONALLY CHECK NORMAL.Oct 13, 1999 · N796UA · Boeing 777222 · Light System WiringSDR 99UAL900675Control Panel · failedFLIGHT ATTENDANT REPORTED ELECTRICAL SMELL IN VICINITY OF DOOR 2 LEFT. FOUND CACP (CABIN AREA CONTROL PANEL) SCREEN BLANKED OUT. PULLED CIRCUIT BREAKER D9 ON P210 PANEL TO REMOVE ELECTRICAL POWER SUPPLY TO PANEL. *S/D* INSTALLED NEW CACP (P/N: 285W0129-3Oct 8, 1999 · N789UA · Boeing 777222 · Entertainment SystemSDR 99UAL900521Fuel Cluster · failedAPU WOULD NOT START ON LANDING. *S/D* PRIMARY CAUSE WAS ATTRIBUTED TO A FAILED FUEL CLUSTER.Oct 6, 1999 · N798UA · Boeing 777222 · APU Engine Fuel and ControlSDR 99UAL900506Ballast · failedCREW REPORTS A BAD SMELL BY ROWS 42HJ AND 43CDE. SMELLS ELECTRICAL IN AREA OF CEILING PANELS. *S/D* INDIRECT CEILING LIGHT BALLAST AT ROW 43HJ FAILED. ASSEMBLY WAS REPLACED AND SYSTEM OPERATES NORMALLY.Oct 1, 1999 · N785UA · Boeing 777222 · Passenger Compartment LightingSDR 99UAL900522Cables · chafedWHILE CHECKING INOPERATIVE VIDEO ENTERTAINMENT SYSTEM PROBLEM, FOUND BUFFER BOX NR 2 AND NR 3 CIRCUIT BREAKERS POPPED. ATTEMPTED RESET RESULTED IN SPARKS IN VIDEO CLOSET BEHIND VIDEO EQUIPMENT. SUBSEQUENT INVESTIGATION UNCOVERED BURNED WIRES AT CONNECTOR P3-DSep 25, 1999 · N796UA · Boeing 777222 · AC Power Distribution SystemSDR 99UAL900676Control Panel · failedREPORT OF ODOR IN AREA OF DOOR 4 RIGHT. FOUND CACP (CABIN AREA CONTROL PANEL) AT DOOR 4 RIGHT BURNED OUT. PULLED CIRCUIT BREAKER TO REMOVE POWER SUPPLY TO PANEL. *S/D* INSTALLED NEW CACP SCREEN (P/N: 285W0012-3). NO EVIDENCE OF AIRCRAFT ELECTRICAL SYSTEM Sep 18, 1999 · N793UA · Boeing 777222 · Entertainment SystemSDR 99UAL900482Valve · out of adjustedON TAKEOFF, NOSE LANDING GEAR SHOWED DISAGREE. NOSE GEAR APPEARED STUCK DOWN. FLIGHT RETURNED TO ORD, LANDING UNDER AMBER ALERT. *S/D* COULD NOT DUPLICATE MALFUNCTION ON GROUND. REPLACED THE NLG RETRACT ACTUATOR AND NLG LOCK ACTUATOR AS PRECAUTIONARY. SHSep 16, 1999 · N782UA · Boeing 777222 · Landing Gear ActuatorSDR 99UAL900476Fan · failedFLIGHT ATTENDANT REPORTED THAT THERE WAS A STRONG ELECTRIC SMELL IN THE AFT CABIN. AN AMBER ALERT WAS DECLARED AND THE FLIGHT DIVERTED INTO MIA MAKING A NORMAL LANDING. *S/D* FOUND THE RIGHT LOWER AIR RECIRCULATION FAN FAILED. FAN WAS REPLACED. SHOP FINDISep 15, 1999 · N784UA · Boeing 777222 · Air Distribution FanSDR 99UAL900460Rollers · out of positionEN ROUTE SFO-CDG DURING CLIMB, CREW REPORTED HEAVY VIBRATION COMING FROM LEFT SIDE OF AIRCRAFT AROUND ROW 12. TURNED OFF LEFT PACK AND VIBRATION DECREASED CONSIDERABLY. *S/D* THE LEFTHAND RAM AIR INLET DOOR ROLLERS WERE FOUND OFF THE ROLLER TRACKS. THE ROSep 3, 1999 · N799UA · Boeing 777222 · Cabin Cooling SystemSDR 99UAL900451Compressor · stalledSHORTLY AFTER DEPARTURE IAD ENROUTE TO FRA, LEFT ENGINE INDICATED HIGH EGT ACCOMPLANIED BY ENGINE SURGE. ACCOMPLISH ENGINE SHUTDOWN AND RETURNED TO IAD. SUPPLEMENTAL DATA UPDATE COMPRESSOR STALL WAS CAUSED BY COMPRESSOR VARIABLE VANE SYSTEM FAILSAFED TO FULL Aug 26, 1999 · N785UA · Boeing 777222 · Turbine Engine Compressor SectionSDR 99UAL900432Clamp · brokenSHORTLY AFTER DEPARTING ORD EN ROUTE LHR, CREW RECEIVED STATUS MESSAGE ON BLEED LOOP NR 1. SUBSEQUENTLY MESSAGE RECEIVED FOR NR 2 BLEED LOOP. AIRCRAFT DIVERTED TO IAD. *S/D* DUCT CLAMP ON RIGHTHAND AC PACK LOWER FLOW CONTROL VALVE (FCV) BROKE, TRIGGERING AAug 19, 1999 · N788UA · Boeing 777222 · Cabin Cooling SystemSDR 99UAL900376Cacp · overheatedEN ROUTE LHR-IAD, ELECTRICAL ODOR REPORTED IN FLIGHT DECK AND MID GALLEY AREA. AIRCRAFT RETURNED TO LHR. *S/D* INSULATION, (HEAT SHRINK), AT BASE OF LAMPS OVERHEATED. THE OVERHEAT CONDITION IS A KNOWN PROBLEM AND BOEING IS PREPARING A SERVICE BULLETIN AND Jul 17, 1999 · N788UA · Boeing 777222 · Entertainment SystemSDR 99UAL900365T1 Blade · fracturedAFTER TAKEOFF FROM LHR CREW NOTICED EGT RISE WITH LOSS OF POWER ON NR 1 ENGINE. ENGINE WAS SHUT DOWN AND FLIGHT RETURNED TO LHR. *S/D* NR 1 ENGINE REMOVED. FOUND HIGH PRESSURE TURBINE DAMAGE ORIGINATING AT STAGE 1 BLADE FRACTURED IN AIRFOIL ABOVE THE PLATFJul 12, 1999 · N798UA · Boeing 777222 · Turbine SectionSDR 99UAL900347Coffee Maker · failedELECTRICAL SMELL AND SPARKING IN AFT GALLEY 441 IN THE AREA OF COFFEEMAKERS. RESET ALL BREAKERS AND TURNED POWER BACK ON TO AFT GALLEY, INSPECTED ALL VISABLE WIRES AND REPLACED COFFEE MAKERS FOR PRECAUTIONARY MEASURES; WAITED 45+ MINUTES WITH POWER ON GALLEY Jun 29, 1999 · N205UA · Boeing 777222 · Buffet/GalleysSDR 99UAL900345Oven · dirtyBURNT PLASTIC SMELL IN MID GALLEY. FOUND AND REMOVED MELTED PLASTIC FROM WARMING OVEN AT POSITION W31. SEA CLEANED INSIDE OF WARMING OVEN.Jun 28, 1999 · N791UA · Boeing 777222 · Buffet/GalleysSDR 99UAL900336Structure · vibrationCREW REPORTED AFTER TAKEOFF AIRFRAME VIBRATION OF UNDETERMINED ORIGIN. AIRCRAFT RETURNED TO LAX.Jun 23, 1999 · N793UA · Boeing 777222 · Aircraft StructuresSDR 99UAL900280Aims · trippedENGINE BLEED EICAS: BOTH PACKS WORKING OFF OF LEFT BLEED. REPLACED RT PRSOV (PRESSURE REGULATING SHUTOFF VALVE) BUT CONDITION REMAINS. *S/D* CAUSE WAS A DISCRETE LATCHED FAULT IN INPUT/OUTPUT MODUEL IOM M004 IN LEFT AIMS (AIRPLANE INFORMATION MANAGEMENT SYMay 16, 1999 · N786UA · Boeing 777222 · Central DisplaySDR 99UAL900239Valve · defectiveEN ROUTE CDG-SFO, FLIGHT CREW OXYGEN PRESSURE DECLINING AT RATE OF 20 PSI PER MINUTE. FLIGHT DIVERTED TO KEF. *S/D* ON ACCOMPLISHMENT OF LEAK CHECK, FOUND OXYGEN BLEED VALVE, (P/N 19820-1), LEAKING OUT AT THE EXHAUST PORT. VALVE WAS REPLACED WITH A NEW VALApr 24, 1999 · N205UA · Boeing 777222 · Crew Oxygen SystemSDR 99UAL900205Boost Pump · inoperativeABOUT 45 MIN AFTER DEPART (ORD-FRA) FLT CREW RECEIVED ADVISORY MSG, FUEL PUMP L FWD INDICATING LEFT FORWARD (BOOST) FUEL PUMP OUTPUT PRESSURE LOW. ETOPS RESTRICTIONS APPLIED PER MEL. *S/D* RELAY (L FWD FUEL BOOST PUMP SWITCH) IN P320 IS NOT IN THE COMMANDEApr 11, 1999 · N793UA · Boeing 777222 · Fuel Boost PumpSDR 99UAL900186Heater · malfunctionedKEROSENE SMELL REPORTED ON GROUND AND ONCE IN CRUISE AROUND DOOR 2L. FLIGHT EN ROUTE EWR-LHR AND DIVERTED TO YQX. *S/D* ACCOMPLISHED IDLE AND HIGH POWER ENGINE RUNS. INSPECTED AND SEARCHED CARGO PITS WITH AIRCRAFT PRESSURIZED AND UNPRESSURIZED, NOTHING FOUMar 25, 1999 · N788UA · Boeing 777222 · Windshield/Door Rain/Ice RemovalSDR 99UAL900165Wire Harness · damagedAIRCRAFT ARRIVED AT GATE AND APU WOULD NOT POWER AC BUS. RIGHTHAND BUS TIE IS OPEN AND WILL NOT CLOSE. *S/D* THIS REPORT IS DIRECTLY RELATED TO REPORT 99UAL900166 RELATED. REFER TO 99UAL900166 FOR THE DETAILS RELATED TO CAUSE AND CORRECTIVE ACTION. THE LOMar 13, 1999 · N794UA · Boeing 777222 · Electrical Power System WiringSDR 99UAL900166Wire · misinstalledFOUND SHORTED AND BURNED WIRING ABOVE CEILING AT THE P300 PANEL. *S/D* THE CAUSE OF THE PROBLEM WAS DAMAGE TO WIRES IN WIRE BUNDLE W2833. THE PROBABLE CAUSE WAS METHOD OF SECURING THE WIRE BUNDLE TO A STANDOFF OR DAMAGE TO THE WIRE DURING THE INITIAL INSTALMar 13, 1999 · N794UA · Boeing 777222 · AC Power Distribution SystemSDR 99UAL900125Seal · tornCONSTANT VIBRATION FELT IN AFT GALLEY FLOOR. CREW ELECTED TO RETURN TO MIA. *S/D* THE BOOT, (P/N S212W301-9, IPC 36-12-04-005, ITEM 155) AT THE PENETRATION OF THE APU DUCT INTO THE AFT DOME OF FUSELAGE, WAS FOUND TORN IN THE SEAM. FURTHER EXAMINATION OF THFeb 16, 1999 · N795UA · Boeing 777222 · Pneumatic Distribution SystemSDR 99UAL900115Wire Harness · damagedDURING C-CHECK, INSPECTION REPORTED IDG (INTERGRATED DRIVE GENERATOR) WIRE BUNDLE DAMAGE ON BOTH ENGINES. WIRE BUNDLE ID IS W0623 (P/N 420990 / 50U629). ALSO REF AMM 73-21-73. *S/D* ANALYSIS REVEALED CONTRIBUTING DAMAGE WAS RESULT OF VIBRATION AND ENGINE BFeb 5, 1999 · N797UA · Boeing 777222 · AC Generator-AlternatorSDR 99UAL900075Seal · tornFLIGHT RETURNED TO DEN, UNABLE TO MAINTAIN CABIN ALTITUDE AT CRUISE. *S/D* THE BOOT, REF: (P/N S212W301-9), IPC 36-12-04-005, ITEM 155) AT THE PENETRATION OF THE APU DUCT INTO THE AFT DOME OF FUSELAGE, WAS FOUND TORN IN THE SEAM. FURTHER EXAMINATION OF THE Feb 3, 1999 · N794UA · Boeing 777222 · Cabin Pressure Control SystemSDR 99UAL900046Bearing · failedJUST AFTER LEVEL OFF THE RIGHT BACK-UP GENERATOR FAILED. CREW ATTEMPTED TO START APU AND APU FAILED. CREW ELECTED TO RETURN TO MIA. *S/D* APU FAILED TO LIGHT AT 33,000 FT WITH FAULT LIGHT INDICATION ON 17 JAN, 1999. MIA MAINTENANCE REPORTED APUC LATCHED FJan 16, 1999 · N784UA · Boeing 777222 · APU Start/Ignition SystemSDR 98UAL900627Light · inoperativeEMERGENCY AISLE LIGHT INOP AT DR 5L DROP CEILING PANEL. RELAMPED LIGHT, OPS CK OK.Jan 7, 1999 · N197UA · Boeing 747422 · Emergency LightingSDR 98UAL900542Autopilot · malfunctionedON VNAV DESCENT (USED DES NOW PROMPT) DESCENT BEGAN AT 1200 FPM. UPON CATCHING VNAV PATH, AIRCRAFT PITCHED UP IN EXCESS OF 1000FPM. CREW DISCONNECTED AUTOPILOT AND CONTINUED DESCENT IN FLCH. THIS IS A KNOWN ANOMALY THAT IS COVERED IN THE FLIGHT MANUAL, IN BNov 13, 1998 · N790UA · Boeing 777222 · Autopilot SystemSDR 98UAL900459Eicas · malfunctionedEN ROUTE CDG TO IAD, LOWER EICAS DISPLAY BLINKING AND INDICATED ALTITUDE ON CAPTAIN'S PFD (PRIMARY FLIGHT DISPLAY) DROPS ALONG WITH CABIN ALTITUDE. FLIGHT DIVERTED TO LHR. AFTER INVESTIGATION OF THE CORE PROCESSING MODULE/GRAPHICS GENERATOR BY BOTH BOEING ANSep 11, 1998 · N792UA · Boeing 777222 · Central WarningSDR 98UAL900365Seal · failedAFTER TAKEOFF AT 1500 FEET, LEFT OIL QUANTITY WENT TO ZERO, LEFT N1 WENT TO ZERO, SMOKE REPORTED IN COCKPIT, LEFT ENGINE SHUT DOWN. RETURNED TO LHR. *S/D* THE ENGINE WAS REMOVED AND ANALYSIS REVEALED THE NR 2 BEARING FRONT CARBON SEAL (51G944) WAS FOUND WORN Jul 29, 1998 · N796UA · Boeing 777222 · Turbine Engine Compressor Section
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