N411SN

Part: HYDRAULIC SYSTEM — FLUID LOSS (NR 3) · airframe 76,569 hrs · 15,377 cycles

DECLARED EMERGENCY DUE TO LOSS OF HYDRAULIC SYSTEM 3 FLUID QUANTITY.

Part: FUEL TANK — ABNORMAL · airframe 76,059 hrs · 15,259 cycles

FUEL QUANTITY INCREASED DURING FLIGHT. FUEL IN TANKS 1 AND 3 19600KG. TOTAL RISES AND FALLS 3-4K. TANK 1/3 INCREASE 1200K AFTER LANDING.

Part: UNKNOWN — VIBRATION (FUSELAGE) · airframe 75,889 hrs · 15,225 cycles

AIR TURN BACK DUE TO SEVERE AIRFRAME VIBRATION AFTER GEAR RETRACTION.

Part: HYDROMECH UNIT — FAILED (NR 3) · airframe 75,845 hrs · 15,215 cycles

LVL 2 HYD 3 FAIL. WAS PRECEDED BY HYD 3 ELEV OFF AND HYD 3 QTY LOW. PERFORMED MANUAL GEAR EXTENSION, IAW CHECK LIST.

Part: OIL SYSTEM — LEAKING (NR 1 ENGINE) · airframe 75,234 hrs · 15,069 cycles

ENGINE 1 OIL QTY REDUCED FROM 20 TO 0/ OIL QTY ZERO.

Part: UNKNOWN — VIBRATION (FUSELAGE) · airframe 74,557 hrs · 14,940 cycles

RETURNED BACK TO ANC SECOND TIME. PASSING 1000 FEET, LOUD BANG SHOOK WHOLE AIRPLANE AND FLIGHT CONTROLS.

Part: UNKNOWN — VIBRATION · airframe 74,550 hrs · 14,937 cycles

RETURN TO ANC DUE TO STRONG VIBRATIONS OF FRONT FUSELAGE.

Part: WARNING SYSTEM — ACTIVATED (COCKPIT) · airframe 74,535 hrs · 14,934 cycles

A LEVEL 2 ALERT "CARGO DOOR CTR A " APPEARED IN THE CLIMB THROUGH 2000', LIGHT VIBRATION.

Part: RIVET — LOOSE (ENGINE INLET) · airframe 74,486 hrs · 14,924 cycles

DURING SERVICE CHECK, INSPECTION OF BOEING TASK CARD 71-101-05-02, PERFORMING AFT ENG., GVI FOUND SEVERAL LOOSE AND POPPED RIVETS INSIDE ENG INLET (6 O CLOCK POSITION), CORROSION ISSUES BEING WORKED.

Part: RIVET — LOOSE (ENGINE INLET) · airframe 74,486 hrs · 14,924 cycles

REF BOEING TASK CARD 71-101-05-02, WHILE PERFORMING AFT ENG GVI, FOUND SEVERAL LOOSE AND POPPED RIVETS INSIDE ENG INLET (6 O CLOCK POSITION), CORROSION ISSUES.

Part: FIRE WARNING — ILLUMINATED (NR 2 ENGINE) · airframe 74,102 hrs · 14,780 cycles

ON DESCENT, #2 ENG FIRE WARNING, ACTIVATED FIRE BOTTLE AND SHUTDOWN #2 ENG

Part: CONNECTOR — SHORTED (FIRE DETECTOR) · airframe 74,046 hrs · 14,723 cycles

AFTER TAKEOFF AND CRUISE LVL 1 INTERMITTENT FIRE DETECTOR ENGINE 2 FAIL WITH ENGINE 2 FIRE WARNING. T/S PER FIM 26-11-01 PERFORMED WIRING CHECK LOOP "A" PIN J AND K FOUND SHORTED TO GROUND. CLEAN CONTAMINATION PERFORMED RTS PER AMM 26-11-02 ALL TEST PASS.

Part: HYDRAULIC SYSTEM — FAILED (NR 3) · airframe 73,444 hrs · 14,630 cycles

HYD 3 QTY LO / HYD 3 FAIL. UPON INSPECTION, FOUND NLG DOORS DAMAGED. AIRCRAFT STILL IN WORK TO TROUBLESHOOT AND RESOLVE.

Part: LONGERON — CORRODED (BS 1039-1059)

LONGERON 52 CORRODED BETWEEN FRAMES BS 1039 - 1059, IN FORWARD CARGO BAY.

Part: BLEED VALVE — STUCK (NR 3 ENGINE) · airframe 72,645 hrs · 14,340 cycles

ON TAKE OFF, NR 3 ENGINE EXPERIENCED COMPRESSOR STALL. DUMPED FUEL AND PERFORMED AN AIR TURN BACK. TROUBLESHOT SYSTEM, BORESCOPED ENGINE WITH NO DISCREPANCIES NOTED. FOUND HIGH STAGE BLEED VALVE STUCK IN THE OPEN POSITION.

Part: BOLT — LOOSE (SLAT TRACK) · airframe 72,323 hrs · 14,262 cycles

LEVEL 2 ALERT, SLAT DISAGREE DURING INITIAL CLIMB WITH THE FLAP & SLAT HANDLE AT FLAPS 20 DEGREES EXTENDED. FOUND A LOOSE BOLT ON SLAT TRACK NR 16. TIGHTENED IAW AMM 27-20-30. PERFORMED RETURN TO SERVICE OF FCC NR 1 & THE NR 1 SLAT SYSTEM IAW AMM 27-20-01. ALL TEST NORMAL.

Part: LANDING GEAR — MALFUNCTIONED · airframe 70,045 hrs · 13,994 cycles

AFTER TAKEOFF, NO LANDING GEAR RETRACTION INDICATION. VIBRATION AND NOISE SUGGESTED THAT GEAR WERE DOWN.

Part: ADC — FAULTED (NR 2) · airframe 71,366 hrs · 13,999 cycles

LOSS OF CADC NR 2 DURING DEPARTURE. REPLACED THE NR 2 CADC AND RETURN AIRCRAFT TO SERVICE.

Part: PITOT TUBE — BLOCKED · airframe 71,367 hrs · 14,000 cycles

SECOND AIR TURN BACK, CADC NR 2 FAILED ON DEPARTURE. TROUBLESHOT SYSTEM AND FOUND A PITOT TUBE BLOCKAGE. REMOVED AND CLEANED PITOT TUBE DRAIN IAW AMM 34-11-01 RETURNED AIRCRAFT TO SERVICE..

Part: SWITCH — INTERMITTENT (CABIN) · airframe 70,734 hrs · 13,845 cycles

ELECTRICAL CONTROL PANEL HAS INTERMITTENT EMER POWER SWITCH.

Part: LIGHT — INOPERATIVE (CABIN) · airframe 70,734 hrs · 13,845 cycles

EMERGENCY LIGHTING INOPERATIVE.

Part: WIRE — CUT (CABIN) · airframe 70,734 hrs · 13,845 cycles

COURIER AREA ATTIC AT 53-901 TERMINAL STRIP FOUND TWO CUT WIRES.

Part: SPAR CAP — CORRODED (RT WING) · corrosion level 2 · airframe 70,733 hrs · 13,844 cycles

RIGHT UPPER TE SKIN PANEL, OTBD OF WING STATION XW=680, SHOWS SIGNS OF CORROSION. AFTER EVALUATION, RT WING UPPER SPAR CAP CORRODED FROM XORS=773 TO XORS=799.

Part: SKIN — CORRODED (RT AILERON) · corrosion level 2 · airframe 70,722 hrs · 13,844 cycles

RIGHT WING UPPER SKIN AT MID-SPAN OF AILERON, APPROX XORS=966 - 1000, CORRODED.

Part: SEAT TRACK — BROKEN (FUSELAGE) · airframe 70,733 hrs · 13,844 cycles

MAIN CABIN SEAT TRACK BS 635, X=+27.5 LOWER FLANGES BROKEN AWAY FROM FLOORBEAM.

Part: SPAR CAP — CORRODED (RT WING) · corrosion level 2 · airframe 70,733 hrs · 13,844 cycles

RIGHT WING REAR SPAR, LOWER CHORD BY OTBD AILERON HAS CORROSION ON EXISTING REPAIR, AT XORS=1048 - XORS=1054.

Part: SKIN — CORRODED (BS 1239) · airframe 70,733 hrs · 13,844 cycles

UNDER FLOOR PANEL 263BF, APPROX BS 1239, RBL 5 WING CENTER BOX CORRODED. ADDITIONAL AREAS OF EXFOLIATION ON CTR WING UPPER SKIN LOCATED AT, RBL XCW=-15.5, -17, -20, 56.5 & -82.0 ALONG STRINGER 15 & XCW=-71.5 AT STRINGER 19 ALSO XCW=+4.0 STRINGER 15.

Part: SPAR CAP — CORRODED (RT WING) · corrosion level 2 · airframe 70,722 hrs · 13,844 cycles

RIGHT WING MID SPAN OF AILERON, AFT SKIN PANEL BULGING.

Part: SKIN — CORRODED (LT WING) · airframe 70,733 hrs · 13,844 cycles

LEFT WING UPPER TE SKIN PANEL AT XW=670 CORRODED.

Part: SPAR CAP — CORRODED (LT WING) · airframe 70,733 hrs · 30,844 cycles

LEFT WING UPPER T/E SKIN PANEL CORRODED AT WS XW670 EXTENDING INBD ALONG THE UPPER WING REAR SPAR UPPER CAP ON FORWARD SIDE OF CHORD BETWEEN WING UPPER SKIN AND CHORD AT BS 772.5.

Part: SPAR — CORRODED (RT WING) · corrosion level 2 · airframe 70,733 hrs · 13,844 cycles

RIGHT WING UPPER TE SKIN PANEL, OTBD OF WING STATION XW=716, SHOWS SIGNS OF CORROSION. AFTER EVALUATION, FOUND RT WING UPPER SPAR CAP CORRODED FROM XORS=799 TO XORS=841.

Part: FLOORBEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 70,733 hrs · 13,844 cycles

MAIN DECK FLOOR SUPPORT AT STATION 495, BETWEEN RBL 66 - RBL 94.5, CORRODED.

Part: FLOORBEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 70,733 hrs · 13,844 cycles

MAIN DECK FLOOR SUPPORT AT STATION 495, BETWEEN RBL 29 - RBL 61, CORRODED.

Part: FLOORBEAM — CORRODED (FUSELAGE) · corrosion level 2 · airframe 70,733 hrs · 13,844 cycles

MAIN DECK FLOOR SUPPORT AT STATION 460, BETWEEN BL 0 & RBL 88, CORRODED.

Part: SKIN — CORRODED (LT WING) · corrosion level 2 · airframe 70,733 hrs · 13,844 cycles

LEFT WING UPPER SURFACE SKIN AT XOR 532, STRINGER 10 AT FWD SIDE OF TANK ACCESS HAS EXFOLIATION.

Part: SUPPORT — CORRODED (FAIRING) · airframe 70,733 hrs · 13,844 cycles

AFT SUPPORT RAIL FOR WING TO BODY FAIRING 153DB, CORRODED SEVERAL LOCATIONS.