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lights illuminated accompanied by low system A
pressure indicates loss of system A. Other
indications include:
• system A flight control LOW PRESSURE light illuminated
• FEEL DIFF PRESS light illuminated when flaps are up.
SYSTEM A FLIGHT CONTROL switch . . . . . . . . . . STBY RUD
SYSTEM A HYDRAULIC PUMP switches . . . . . . . . . . . . . .OFF
Note: Inoperative items:
• ground spoilers
• inboard flight spoilers
• autopilot A
• normal nose wheel steering
• alternate brakes
Note: Engine No. 1 thrust reverser has standby pressure.
Plan for manual gear extension.
Note: When the gear has been lowered manually, it cannot
be retracted. The drag penalty with gear extended
may make it impossible to reach an alternate field.
NOSE WHEEL STEERING
switch (as installed) . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ALT
----------------------------DEFERRED ITEMS ------------------------------
==> DESCENT
Recall . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Checked
Autobrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___
Landing data . . . . . . . . . . . . . . . . . . . VREF___, Minimums ___
Approach briefing . . . . . . . . . . . . . . . . . . . . . . . . . . Completed
----------------------------DEFERRED ITEMS ------------------------------
==> APPROACH
Altimeters . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___
Continued on next page
LOSS OF SYSTEM A
June 3, 2005
737 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
 13.3
13.3
Continued from previous page
----------------------------DEFERRED ITEMS ------------------------------
==> LANDING
Landing gear lever . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
Manual gear extension handles . . . . . . . . . . . . . . . . . . . . . Pull
[The uplock is released when the handle is pulled to its limit. The related
red landing gear indicator light illuminates, indicating uplock release.]
Wait 15 seconds after the last manual gear extension handle
is pulled:
Landing gear lever . . . . . . . . . . . . . . . . . . . . . . . . . . .DOWN
ENGINE START switches . . . . . . . . . . . . . . . . . . . . . . . . CONT
Speedbrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .ARMED
Landing gear. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .DOWN
Flaps . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . ___, green light
December 5, 2003
737 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.

13.4
13.4
Condition: Both system B hydraulic pump LOW PRESSURE
lights illuminated accompanied by low system B
pressure indicates loss of system B. Other
indications include:
• system B flight control LOW PRESSURE light illuminated
• FEEL DIFF PRESS light illuminated when flaps are up.
SYSTEM B FLIGHT CONTROL switch . . . . . . . . . . STBY RUD
SYSTEM B HYDRAULIC PUMP switches . . . . . . . . . . . . . .OFF
Note: Inoperative items:
• outboard flight spoilers
• autopilot B
• yaw damper
• alternate nose wheel steering
• normal brakes
Note: Alternate brakes are available. Engine No. 2 thrust
reverser and leading edge flaps and slats have
standby pressure. Trailing edge flaps have alternate
electrical power.
Plan for flaps 15 landing.
Set VREF 15.
Plan to extend flaps to 15 using alternate flap extension
Note: Alternate flap extension time to flaps 15 is
approximately 2 minutes.
Note: The drag penalty with the leading edge devices
extended may make it impossible to reach an
alternate field.
Continued on next page
LOSS OF SYSTEM B
June 3, 2005
737 Flight Crew Operations Manual
Copyright © The Boeing Company. See title page for details.
 13.5
13.5
Continued from previous page
----------------------------DEFERRED ITEMS ------------------------------
==> DESCENT
Recall. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . Checked
Autobrake . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .OFF
GROUND PROXIMITY FLAP/GEAR
INHIBIT switch (as installed) . . . . . . . . . . FLAP/GEAR INHIBIT
GROUND PROXIMITY FLAP
INHIBIT switch (as installed) . . . . . . . . . . . . . . . .FLAP INHIBIT
Landing data . . . . . . . . . . . . . . . . . . . .VREF 15, Minimums ___
　
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