N617US

Part: TERMINAL BLOCK — SMOKE (WINDOW HEAT) · airframe 106,391 hrs · 26,010 cycles

DURING FLIGHT, SMOKE WAS NOTED PILOTS L-1 WINDOW LOWER LEFT TERMINAL BLOCK WAS SMOKING AND APPEARS MELTED. POWER TO L-1 WINDOW WAS TURNED OFF AND SMOKE AND SMELL DISSIPATED. FLIGHT CONTINUED ON AND LANDING WAS UNEVENTFUL. MAINTENANCE REMOVED AND REPLACED NR 1 WINDSHIELD. OPERATIONAL CHECKED GOOD AND AIRCRAFT WAS RETURNED TO SERVICE.

Part: ENGINE — FLAMED OUT (NR 3) · airframe 105,761 hrs · 25,882 cycles

DURING CRUISE, THE NR 3 ENGINE FLAMED OUT. APPROXIMATELY 60 SECONDS AFTER THE FLAME-OUT, THE NR 3 ENGINE FUEL ICING LIGHT ILLUMINATED. THE COM PROCEDURE WAS FOLLOWED AND THE ENGINE WAS RESTARTED AT FL380. THE FLIGHT CONTINUED TO NRT AND LANDED WITHOUT FURTHER INCIDENT. MAINTENANCE SUMPED THE NR 3 MAIN FUEL TANK AND REPLACED THE FUEL FILTER. NO WATER OR CONTAMINATION WAS NOTED. THE FUEL FILTER DIFFERENTIAL PRESSURE SWITCH WAS REPLACED.

Part: CIRCUIT CARD — MALFUNCTIONED (FIRE WARNING SYS) · airframe 105,630 hrs · 25,847 cycles

DURING APPROACH, HAD THE MASTER FIRE WARNING LIGHT AND BELL SOUNDED FOR 1 TO 3 SECONDS THEN STOPPED. IT HAPPENED AGAIN 3 OR 4 TIMES. THERE WERE NO OTHER FIRE INDICATIONS IN ANY ENGINE FIRE HANDLE, APU, OR CARGO. FLIGHT CONTINUED ON AND LANDING WAS UNEVENTFUL. MAINTENANCE REMOVED AND REPLACED FIRE WARNING CARDS A6 THRU A11 AND A5 AND A12. OPERATIONAL CHECKED GOOD AND AIRCRAFT RETURNED TO SERVICE.

Part: SKIN — DAMAGED (CARGO DOOR) · airframe 104,395 hrs · 25,604 cycles

DURING THRU FLIGHT NRT MAINTENANCE, FOUND MAIN DECK SIDE CARGO DOOR SKIN DAMAGE AT FORWARD LOWER ACCESS DOOR. REPAIRED PER EA 67-208937.

Part: STRINGER — CRACKED (BS 1960-1980) · airframe 104,256 hrs · 25,573 cycles

DURING "L" CHECK, FOUND CRACK ON STRINGER 48R, BS 1960-1980. REPAIRED PER EA 67-208978.

Part: TENSION TIE — CRACKED (BS 900) · airframe 104,256 hrs · 25,573 cycles

DURING "L" CHECK, FOUND CRACKS IN LT AND RT TENSION TIE FASTENER HOLES, FRAME AND FAIL/SAFE CHORD AT BS 900. REPAIRED PER EA 67-208626.

Part: TENSION TIE — CRACKED (FUSELAGE) · airframe 104,256 hrs · 25,573 cycles

DURING "L" CHECK, FOUND CRACKS IN FRAME TENSION TIE WEB FASTENER HOLES AT BS 880 STRINGER 6L TO STRINGER 12L. REPAIRED PER EA 67-208619 SECTIONS I AND II.

Part: TENSION TIE — CRACKED (FUSELAGE) · airframe 104,256 hrs · 25,573 cycles

DURING "L" CHECK, FOUND CRACKS IN FRAME TENSION TIE WEB DOUBLER FASTENER HOLES. REPAIRED PER EA 67-208621 SECTION I AND II.

Part: TENSION TIE — CRACKED (BS 840) · airframe 104,256 hrs · 25,573 cycles

DURING "L" CHECK FOUND CRACKS IN LT AND RT TENSION TIE FASTENER HOLES AND FRAME AT BS 840 UPPER LOBE. REPAIRED PER EA 67-208624.

Part: TENSION TIE — CRACKED (BS 820) · airframe 104,256 hrs · 25,573 cycles

DURING "L" CHECK, FOUND CRACKS IN LT AND RT TENSION TIE FASTENER HOLES, FRAME AND FAIL/SAFE CHORD AT BS 820. REPAIRED PER EA 67-208625.

Part: TENSION TIE — CRACKED (BS 860) · airframe 104,256 hrs · 25,573 cycles

DURING "L" CHECK, FOUND CRACKS IN LT AND RT TENSION TIE FASTENER HOLES AND FRAME AT BS 860 UPPER LOBE. REPAIRED PER EA 67-208623.

Part: TENSION TIE — CRACKED (BS 920) · airframe 104,256 hrs · 25,573 cycles

DURING "L" CHECK, FOUND CRACKS IN LT AND RT TENSION TIE FASTENER HOLES, FRAME AND FAIL SAFE CHORD AT BS 920. REPAIRED PER EA 67-208627.

Part: STRINGER — CRACKED (BS 1482-1486) · airframe 104,256 hrs · 25,573 cycles

DURING "L" CHECK, FOUND CRACK IN STRINGER 16L, BS 1482-1486. REPAIRED PER EA 67-208979.

Part: STRINGER — CRACKED (BS 2160-2180) · airframe 104,256 hrs · 25,573 cycles

DURING "L" CHECK, FOUND CRACK IN STRINGER 46L, BS 2160-2180. REPAIRED PER EA 67-208981.

Part: FRAME — CRACKED (BS 2140 S25-26L) · airframe 104,256 hrs · 25,573 cycles

DURING "L" CHECK, FOUND CRACK IN FRAME WEB AT BS 2140 BETWEEN S25L AND S26L. REPAIRED PER EA 67-208624.

Part: FLOORBEAM — CRACKED (FUSELAGE) · airframe 97,472 hrs · 24,123 cycles

DURING H-CHECK, FOUND CRACK ON UPPER DECK FLOORBEAM FASTENER HOLE AT BS 340 RBL 42. REPAIRED IAW EA 67-165190.

Part: FRAME — CORRODED (BS 400) · corrosion level 2 · airframe 99,339 hrs · 24,613 cycles

DURING L-CHECK FOUND CORROSION ON FRAME LOWER CHORD AT BS 400 BETWEEN S40L AND S41L. REPAIRED PER EA 67-165239.

Part: FRAME — CRACKED (BS 380) · airframe 99,339 hrs · 24,613 cycles

DURING L-CHECK FOUND CRACKS IN FRAME AT BS 380 S24L. REPAIRED PER EA 67-165232.

Part: FRAME — CRACKED (BS 400) · airframe 99,339 hrs · 24,613 cycles

DURING L-CHECK FOUND CRACK IN FRAME AT BS 400 S23L. REPAIRED PER EA 67-165233.

Part: SKIN — CRACKED (BS 2060-2080) · airframe 99,339 hrs · 24,613 cycles

DURING L-CHECK FOUND CRACK IN FUSELAGE SKIN BETWEEN BS 2060 - 2080 S31R-33R. REPAIRED PER EA 67-165234.

Part: FIRE LOOP — MALFUNCTIONED (APU BAY) · airframe 99,276 hrs · 24,600 cycles

DURING CRUISE, APU FIRE LIGHT B LOOP ILLUMINATED WITH BELL. THEN SELECTED LOOP A. AIRCRAFT CONTINUED ON TO ANC AND LANDED WITHOUT INCIDENT. ANC MAINTENANCE PUT APU FIRE LOOP B ON MEL. 18JUL05 SIN MAINTENANCE R&R UPPER FIRE DETECTOR ELEMENTS LOOP A & B. OPERATIONAL CHECKS OK.

Part: WIRE — CHAFED (FIRE DETECT SYS) · airframe 99,206 hrs · 24,584 cycles

DURING CRUISE, APU FIRE LIGHT ILLUMINATED WITH BELL. LIGHT AND BELL EXTINGUISHED WHEN FAULT TEST WAS ACCOMPLISHED. AIRCRAFT CONTINUED ON TO DESTINATION AND LANDED WITHOUT INCIDENT. MAINTENANCE PUT APU FIRE LOOP B ON MEL. MAINTENANCE FOUND CHAFED WIRE AND REPAIRED. OPERATIONAL CHECKS OK.

Part: PRESSURE PANEL — CRACKED (NLG WW) · airframe 98,964 hrs · 24,542 cycles

DURING LINE CHECK FOUND CRACK IN RIGHT HAND NOSE WHEEL WELL SIDE PANEL WEB. REPAIRED PER EA 67-204659.

Part: FRAME — CRACKED (FUSELAGE) · airframe 95,074 hrs · 23,771 cycles

DURING H-CHECK FOUND CRACK IN FRAME WEB AT BS 360 S24L. REPAIRED PER EA 67-165134.

Part: TERMINAL — DAMAGED (NR 4 FIRE LOOP) · airframe 92,444 hrs · 23,240 cycles

DURING CLIMB WITH NR 4 ENGINE FIRE LOOP -A- ON MEL, THE FAULT DETECTION ANNUNCIATOR ILLUMINATED FOR THE NR 4 ENGINE B-FIRE DETECTOR. AIRCRAFT RETURNED TO ANC AND LANDED WITHOUT INCIDENT. REPLACED TERMINALS FOR (A) AND (B) FIRE LOOPS AND REPLACED THE RIGHT SIDE SEGMENT OF THE UPPER CORE FIRE LOOP. OPERATIONAL CHECK GOOD.

Part: BULKHEAD — CRACKED (FUSELAGE) · airframe 92,061 hrs · 23,157 cycles

DURING L-CHECK FOUND CRACK ON RT WING LANDING GEAR PRESSURE DECK CANTED BULKHEAD AT BS 1243 RBL 75. REPAIRED PER EA 67-165075.

Part: SKIN — CORRODED (FUSELAGE) · corrosion level 2 · airframe 92,061 hrs · 23,157 cycles

DURING L-CHECK FOUND CORROSION ON SKIN AT AFT CARGO DOOR CUTOUT LOWER CORNER BS 1920 S42R. REPAIRED PER EA 67-165074.

Part: FRAME — CRACKED (NR 1 PYLON) · airframe 92,061 hrs · 23,157 cycles

DURING "L" CHECK FOUND CRACK IN BULKHEAD NR 1 PYLON FRAME WEB. REPAIRED PER EA 67-165077.

Part: SKIN — CORRODED (FUSELAGE) · corrosion level 2 · airframe 92,061 hrs · 23,157 cycles

DURING L-CHECK FOUND CORROSION ON SKIN AT AFT CARGO DOOR CUTOUT LOWER CORNER BS 1920 S42R. REPAIRED PER EA 67-165074.

Part: ANNUNCIATOR — SMOKE (COCKPIT) · airframe 91,932 hrs · 23,133 cycles

DURING CLIMB SMOKE EMITTED FROM THE CAPTAIN'S FLIGHT DIRECTOR/PERFORMANCE MANAGEMENT SYSTEM LIGHT UNDER THE GLARESHIELD. AIRCRAFT RETURNED TO SEA AND LANDED WITHOUT INCIDENT. REPLACED THE PERFORMANCE MANAGEMENT SYSTEM ANNUNCIATOR PANEL AND SWITCHING UNIT. OPERATIONAL CHECK GOOD.

Part: CONTROL BOX — MALFUNCTIONED (FIRE WARNING) · airframe 90,647 hrs · 22,875 cycles

DURING FLIGHT, THE FIRE WARNING LIGHTS CAME ON DIM AND FIRE WARNING BELL SOUNDED. AIRCRAFT CONTINUED TO DESTINATION AND LANDED WITHOUT INCIDENT. REPLACED THE AURAL WARNING CONTROL BOX. OPERATIONAL CHECK GOOD.

Part: MODULE — MALFUNCTIONED (FIRE WARNING) · airframe 90,414 hrs · 22,827 cycles

DURING FLIGHT THE FIRE WARNING BELL SOUNDED AND LIGHTS ILLUMINATED. AIRCRAFT CONTINUED TO DESTINATION AND LANDED WITHOUT INCIDENT. REPLACED THE AURAL WARNING MODULE. OPERATIONAL CHECK GOOD.

Part: CIRCUIT CARD — NOT SEATED (FIRE WARNING) · airframe 89,792 hrs · 22,708 cycles

DURING APPROACH, BOTH MASTER FIRE WARNING LIGHTS ILLUMINATED AND BELL SOUNDED. AIRCRAFT CONTINUED APPROACH AND LANDED WITHOUT INCIDENT. RESEATED FIRE WARNING CARDS. OPERATIONAL CHECK GOOD.

Part: CIRCUIT CARD — FAULTY (FIRE WARNING) · airframe 88,977 hrs · 22,544 cycles

DURING DESCENT, THE MASTER FIRE WARNING BELL SOUNDED AND THE LIGHTS ILLUMINATED INTERMITTENTLY. AIRCRAFT CONTINUED DESCENT AND LANDED WITHOUT INCIDENT. REPLACED APU FIRE DETECTOR CARD. OPERATIONAL CHECK GOOD.

Part: MODULE — MALFUNCTIONED (FIRE WARNING) · airframe 88,959 hrs · 22,540 cycles

DURING DESCENT, THE MASTER FIRE WARNING BELL SOUNDED AND LIGHTS ILLUMINATED INTERMITTENTLY. AIRCRAFT CONTINUED DESCENT AND LANDED WITHOUT INCIDENT. RESEATED ALL FIRE WARNING CIRCUIT CARDS, EXERCISED WARNING RESET SWITCHES AND REPLACED ENGINE FIRE WARNING MODULE. OPERATIONAL CHECK GOOD.

Part: FIRE WARNING — FALSE ACTIVATION (COCKPIT) · airframe 88,946 hrs · 22,538 cycles

DURING DESCENT, THE MASTER FIRE WARNING BELL SOUNDED AND THE LIGHTS ILLUMINATED FOR THREE SECONDS. AIRCRAFT CONTINUED DESCENT AND LANDED WITHOUT INCIDENT. RESEATED ALL FIRE WARNING CIRCUIT CARDS. OPERATIONAL CHECK GOOD.

Part: ENGINE — MALFUNCTIONED (NR 4) · airframe 88,916 hrs · 22,531 cycles

WHILE CLIMBING THROUGH FL280, THE NR 4 ENGINE FLAMED OUT FOLLOWED BY THE FIRE WARNING ACTIVATING FOR THE NR 4 ENGINE. COM PROCEDURES WERE FOLLOWED TO SECURE THE ENGINE AND BOTH FIRE BOTTLES WERE DISCHARGED. AN EMERGENCY WAS DECLARED AND THE AIRCRAFT RETURNED TO SIN. THE AIRCRAFT WAS MET ON THE RUNWAY BY CFR AND FIRE SUPPRESSION EQUIPMENT WAS USED ON THE NR 4 ENGINE. THE AIRCRAFT WAS TOWED OFF THE RUNWAY. MAINTENANCE REPLACED THE NR 4 ENGINE.

Part: TERMINAL — BROKEN (WINDOW L1) · airframe 85,836 hrs · 21,881 cycles

DURING FLIGHT, SMOKE EMMITTED FROM THE ELECTRICAL CONNECTION ON THE LOWER LEFT SIDE OF FLIGHT DECK WINDOW L1. TURNED OFF WINDOW HEAT AND PULLED CIRCUIT BREAKER AND THE SMOKE DISSIPATED. AIRCRAFT CONTINUED TO DESTINATION AND LANDED WITHOUT INCIDENT. REPLACED WINDOW HEAT TERMINAL D419. OPERATIONAL CHECK GOOD.

Part: DOOR — SEPARATED (MLG) · airframe 82,200 hrs · 21,172 cycles

DURING TEST FLIGHT, THE RIGHT BODY LANDING GEAR DOOR LIGHT REMAINED ILLUMINATED AFTER LANDING GEAR EXTENSION. AIRCRAFT COMPLETED TEST FLIGHT AND LANDED WITHOUT INCIDENT. FOUND FORWARD INBOARD RIGHT BODY LANDING GEAR DOOR MISSING. INSTALLED DOOR AND REPLACED OUTBOARD BODY LANDING GEAR DOOR AND RIGHT LANDING GEAR DOOR SEQUENCE VALVE. OPERATIONAL CHECK GOOD.

Part: KEELBEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 82,198 hrs · 21,171 cycles

DURING M CHECK FOUND CORROSION ON KEEL BEAM FROM BS 1466 TO 1480. REPAIRED PER EA 67-178205.

Part: FLOORBEAM — CORRODED (CABIN) · corrosion level 2 · airframe 82,198 hrs · 21,171 cycles

DURING M CHECK, FOUND CORROSION ON FLOORBEAM AROUND TWO FASTENER HOLES AT BS 2000 RBL 98. REPAIRED PER EA 67-178812.

Part: SEAT TRACK — CORRODED (CABIN) · corrosion level 2 · airframe 82,198 hrs · 21,171 cycles

DURING M CHECK, CORROSION WAS FOUND ON SEAT TRACK UPPER CHORD LOWER HORIZONTAL FLANGE AT BS 2110 RBL 33. REPAIRED PER EA 67-178851.

Part: SPAR CAP — CORRODED (RT WING) · corrosion level 2 · airframe 82,198 hrs · 21,171 cycles

DURING M CHECK, FOUND STRESS CORROSION AND CRACKS AT RIGHT WING FRONT SPAR LOWER CHORD AT FSSO 1487. REPAIRED PER EA 67-178257.

Part: SPAR — CRACKED (RT WING) · corrosion level 2 · airframe 82,198 hrs · 21,171 cycles

DURING M'' CHECK, STRESS CORROSION AND CRACKS WERE FOUND AT RIGHT WING FRONT SPAR LOWER CHORD AT FSSO 1460. REPAIRED PER EA 67-178254.

Part: FRAME — CORRODED (FUSELAGE) · corrosion level 2 · airframe 82,198 hrs · 21,171 cycles

DURING C CHECK, FOUND CORROSION ON THE BS 980 FRAME WEB AND SHEAR TIE BETWEEN STRINGER 45RT AND 46 RT. REPAIRED PER EA 67-178050.

Part: FLOORBEAM — CORRODED (CARGO BAY) · corrosion level 2 · airframe 82,198 hrs · 21,171 cycles

DURING M CHECK FOUND CORROSION AT BS 600 RBL 40 FORWARD CARGO FLOORBEAM UPPER CHORD AROUND NUT PLATE HOLES. REPAIRED PER EA 67-178047.

Part: FLOORBEAM — CORRODED (CABIN) · corrosion level 2 · airframe 82,198 hrs · 21,171 cycles

DURING M CHECK, FOUND CORROSION ON FLOORBEAM UPPER CHORD HORIZONTAL FLANGE BS 660 BETWEEN LBL 3 AND LBL 19. REPAIRED PER EA 178199.

Part: FRAME — CRACKED (FUSELAGE) · airframe 82,198 hrs · 21,171 cycles

DURING M CHECK FOUND CRACK IN FASTENER HOLE ON FRAME BS 2040 STRINGER 47R. REPAIRED PER EA 67-178202.

Part: SPAR — CRACKED (RT WING) · airframe 82,198 hrs · 21,171 cycles

DURING M CHECK, FOUND CRACK ON RIGHT WING MIDSPAR WEB AT WS 394 FASTENER LOCATION NR 37 COMMON TO THE UPPER CORD. REPAIRED PER EA 67-178260.

Part: SPAR — CRACKED (WING) · airframe 82,198 hrs · 21,171 cycles

DURING C CHECK, FOUND CRACK IN THE MIDSPAR WEB AT FASTENER HOLE LOCATIONS NR 127 AND 129 NEAR MIDSPAR STATION 575. REPAIRED PER EA 67-178042.

Part: ENGINE — BIRD STRIKE (NR 4)

DURING CLIMB AFTER CREW REPORTED A POSSIBLE BIRDSTRIKE, THE NR 4 ENGINE COMPRESSOR STALLED TWICE. THE ENGINE RECOVERED FOR 8-10 MINUTES AFTER THE FIRST STALL AND THEN STALLED AGAIN. THE ENGINE WAS SHUT DOWN, FUEL WAS DUMPED, AND THE FLIGHT RETURNED TO ANC. T HE LANDING WAS WITHOUT INCIDENT. METAL DEBRIS WAS FOUND IN THE TAILPIPE. THE ENGINE WAS REPLACED. FURTHER INVESTIGATION FOUND BIRDSTRIKE EVIDENCE ON FAN BLADES AND EXTENDING INTO THE FIRST PORTION OF THE COMPRESSOR CORE.

Part: ENGINE — FLAMED OUT (NR 4)

AT FL120, DURING DESCENT WITH ENGINES AT IDLE POWER, THE NR 4 ENGINE FLAMED OUT. THE ENGINE WAS RESTARTED AND OPERATED NORMALLY FOR THE REMAINDER OF THE FLIGHT. MAINTENANCE PERFORMED TROUBLESHOOTING PER FIM WITH NO DEFECTS NOTED.

Part: YAW DAMPER — FAILED (E/E COMPT)

DURING CLIMB, THE AIRCRAFT EXPERIENCED AN UNCOMMANDED YAW MOTION. AIRCRAFT RETURNED TO NRT AND LANDED WITHOUT INCIDENT. REPLACED THE UPPER AND LOWER YAW DAMPER COMPUTER. OPERATIONAL CHECK GOOD.

Part: CONTROL UNIT — FAILED (ANTI-SKID SYST)

DURING APPROACH, THREE ANTI-SKID LIGHTS ILLUMINATED. INITIATED A GO-AROUND AND RECYCLED THE LANDING GEAR AND THE LIGHTS EXTINGUISHED. AIRCRAFT LANDED WITHOUT INCIDENT. REPLACED THE ANTI-SKID CONTROL UNIT. OPERATIONAL CHECK GOOD.

Part: ENGINE — FAILED (NR 1)

ON FINAL APPROACH, THE CREW NOTICED THE LOW OIL PRESSURE WARNING LIGHT ILLUMINATED FOR THE NR 1 ENGINE. AFTER LANDING, THE NR 1 ENGINE EGT EXCEEDED REDLINE AND THE CREW SHUT DOWN THE ENGINE. MAINTENANCE REPLACED THE NR 1 ENGINE.

Part: ENGINE — FLAMED OUT (NR 1)

AT APPROXIMATELY 3000 FEET WHILE DESCENDING TO LAND, THE NR 1 ENGINE FLAMED OUT. MAX EGT AFT FLAMEOUT WAS 800C. THE AIRCRAFT LANDED WITHOUT INCIDENT. MAINTENANCE VISUALLY INSPECTED THE ENGINE INCLUDING A BORESCOPE WITH NO DEFECTS FOUND. NUMEROUS COMPRESSOR BLEED COMPONENTS WERE CHANGED AND THE SUBSEQUENT ENGINE RUN AND BLEED CHECK WERE NORMAL.

Part: CONTROL VALVE — FAILED (NR 1 ENGINE)

DURING TAKEOFF ROLL, THE NR 1 ENGINE EPR LAGGED THE OTHER ENGINES AND THE EGT ROSE TO 925C. TAKEOFF EPR TARGET WAS 1.48 AND THE NR 1 ENGINE ONLY REACHED 1.40. TAKEOFF WAS ABORTED. MAINTENANCE INSPECTED THE ENGINE AND REPLACED THE LINEAR DIRECTIONAL CONTROL VALVE. SUBSEQUENT ENGINE RUN WAS NORMAL WITH TAKEOFF EPR ATTAINED. SPECIFIC PART CAUSING PROBLEM TO BE DETERMINED.

Part: COMP BLADES — DAMAGED (NR 3 ENGINE)

DURING CRUISE, THE NR 3 ENGINE EXPERIENCED MULTIPLE COMPRESSOR STALLS AND SUBSEQUENT ENGINE FAILURE. CREW FOLLOWED COM PROCEDURE, SHUT DOWN THE ENGINE AND DIVERTED TO MSP WITHOUT FURTHER INCIDENT. BORESCOPE INSPECTION OF THE ENGINE REVEALED DAMAGE TO THE 6TH, 7TH AND 8TH STAGE BLADES. THE ENGINE WAS REPLACED AND RUN-UP TEST WAS NORMAL.

Part: ENGINE — MALFUNCTIONED (NR 1)

DURING TAKEOFF ROLL, THE NR 1 ENGINE EGT WENT INTO THE YELLOW RANGE FOR APPROXIMATELY FIVE MINUTES. THE EGT THEN SETTLED AT 910 DEGREES AT FL250. ALSO, THE NR 1 ENGINE NACELLE TEMPERATURE 'B' LOOP WENT TO TOP OF GREEN FOR FIVE MINUTES, WITH NR 1 ENGINE OIL PRESSURE OSCILLATING AT 3 PSI. CREW MADE THE DECISION TO DIVERT FLIGHT TO MSP FOR INSPECTION. THE ENGINE WAS CHANGED AND CHECK WAS NORMAL.

Part: INTERCOSTAL — CORRODED (FS 427)

DURING P-CHECK, FOUND CORROSION ON THE INTERCOSTAL LOWER CHORD AT BS 427, STR 44L. REPAIRED CHORD (P/N 65B11046-14) PER EA 67-99608.

Part: PDU — FAILED (NR 4 LE FLAP)

HKG-NRT - AFTER TAKEOFF, THE NR 4 LEADING EDGE FLAP FAILED TO RETRACT IN NORMAL AND ALTERNATE. CREW FOLLOWED COCKPIT OPERATING MANUAL, DUMPED 50,000 LBS OF FUEL AND DIVERTED FLIGHT TO TPE. REPLACED NR 4 RT L/E PDU AND OPERATIONAL CHECK WAS NORMAL.

Part: CONTROL PANEL — MALFUNCTION (WINDOW HEAT)

EN ROUTE ANC-JFK, THE R1-L1 WINDOW HEAT FAILED TO OPERATE. CREW FOLLOWED COCKPIT OPERATING MANUAL AND DIVERTED FLIGHT TO DTW. MAINTENANCE REPLACED WINDOW HEAT CONTROL PANEL AND CHECK WAS NORMAL.

Part: ENGINE — FAILED (NR 4)

EN ROUTE IAH-LAX, THE NR 4 ENGINE WAS SHUTDOWN DUE TO OIL FILTER BYPASS LIGHT, RISING OIL TEMPERATURE AND DECREASING OIL QUANTITY. CREW FOLLOWED COCKPIT OPERATING MANUAL AND RETURNED FLIGHT TO IAH WITHOUT FURTHER INCIDENTS. MAINTENANCE REPLACED THE NR 4 ENGINE AND TEST WAS NORMAL.

Part: SKIN — CRACKED (RT AILERON)

DURING PERIODIC CHECK, FOUND CRACKING AND DELAMINATION IN THE RIGHT WING OUTBOARD AILERON INBOARD AFT CORNER. REPAIRED PER SRM 51-40-09, FIG 16 AND DWG 65B02154.