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PASS OXYGEN switch . . . . . . . Push to ON and
hold for 1 second
Without delay, descend to the lowest safe
altitude or 10,000 feet, whichever is higher.
To descend:
Move the thrust levers to idle
Extend the speedbrakes
If structural integrity is in doubt, limit
airspeed and avoid high maneuvering
loads.
Descend at VMO/MMO
- - - - - - - - - - - - - - - - - - - - - - -
When at level off:
􀁦􀁦Go to step 6
􀀙 Continued on next page 􀀙
[] CABIN ALTITUDE
Condition: A cabin altitude exceedance occurs.
December 10, 2007
777 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D632W001-TBC
2.2
2.2
5 If the cabin altitude is controllable:
Continue normal operation.
􀂠􀂠􀂠􀂠
6 Choose one:
7 OUTFLOW VALVE switches (both) . . . . . . . . .MAN
8 OUTFLOW VALVE MANUAL
switches (both) . . . . . . . . . . . Push to OPEN and
hold for 30 seconds
Outflow valve displays may be inaccurate.
9 IFE/PASS SEATS power switch . . . . . . . . . . . .Off
10 CABIN/UTILITY power switch . . . . . . . . . . . . .Off
11 SHOULDER and FOOT HEATERS (all) . . . . . . . OFF
12 Minimize the flight deck lighting intensity.
13 Open the flight deck door.
􀀙 Continued on next page 􀀙
􀀙CABIN ALTITUDE continued􀀙
PACK L+R message shows:
􀂠􀂠􀂠􀂠
PACK L+R message is blank and at least one
pack OFF light is extinguished:
􀂠􀂠􀂠􀂠
PACK L+R message is blank and both pack OFF
lights are illuminated:
􀁦􀁦Go to step 7
December 10, 2007
777 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D632W001-TBC 2.3
2.3
14 During daylight:
Install the flight deck sunvisors.
Advise the cabin crew to close the cabin window
shades.
15 Plan to land at the nearest suitable airport.
16 Do not accomplish the following checklist:
CABIN ALTITUDE AUTO
􀂠􀂠􀂠􀂠
􀂠􀂠􀂠􀂠
􀂠􀂠􀂠􀂠
􀀙CABIN ALTITUDE continued􀀙
BLEED ISLN CLOSED C, L, R
Condition: One of the following occurs:
•The isolation valve is failed closed
•The bleed isolation switch is OFF
BLEED ISLN OPEN C, L, R
Condition: The isolation valve is failed open.
December 10, 2007
777 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D632W001-TBC
2.4
2.4
1 The air supply controller automatically isolates the
heat source within approximately 3 minutes by
closing the bleed and isolation valves.
2 Pilot action will be required when a BLEED LOSS
message shows.
3 Do not accomplish the following checklists:
HYD PRESS DEM C1
HYD PRESS DEM C2
􀂠􀂠􀂠􀂠
1 The air supply controller automatically isolates the
heat source within approximately 5 minutes by
closing the bleed and isolation valves.
2 Pilot action will be required when a BLEED LOSS
message shows.
3 Do not accomplish the following checklists:
PACK
HYD PRESS DEM
􀂠􀂠􀂠􀂠
[] BLEED LEAK BODY
Condition: A bleed air leak occurs in the body area.
[] BLEED LEAK L, R
Condition: A bleed air leak occurs in the wing or pack
bay area.
December 10, 2007
777 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
D632W001-TBC 2.5
2.5
1 The air supply controller automatically isolates the
heat source by closing the bleed and isolation
valves.
2 Do not accomplish the following checklist:
PACK
3 Wait 1 minute.
4 Choose one:
5 A/T ARM switch (affected side). . . . . . . . . . . OFF
6 Thrust lever (affected side) . . . . . . Retard slowly
until the BLEED LEAK
STRUT message blanks
or the thrust lever is at idle
7 Do not accomplish the following checklist:
AUTOTHROTTLE
􀀙 Continued on next page 􀀙
[] BLEED LEAK STRUT L, R
Condition: A bleed air leak occurs in the strut area.
BLEED LEAK STRUT message blanks:
􀂠􀂠􀂠􀂠
BLEED LEAK STRUT message stays shown:
􀁦􀁦Go to step 5
December 10, 2007
777 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
　
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