737 Operations Manual
Non-Normal Checklists -
Hydraulics
Copyright © The Boeing Company. See title page for details.
NNC.13.2 D6-27370-400E-TBCE
LOSS OF SYSTEM A
Condition: Both system A hydraulic pump LOW PRESSURE
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.
[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 . . . . . . . . . . . . . . . . . . ALT
---------------------------- DEFERRED ITEMS ------------------------------
==> DESCENT - APPROACH
ANTI-ICE . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . AS REQUIRED
AIR CONDITIONING &
PRESSURIZATION . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . SET
ALTIMETERS &
INSTRUMENTS . . . . . . . . . . . . . . . . . . . . . . SET & X-CHECKED
N1 & IAS BUGS . . . . . . . . . . . . . . . . . . . . . . .CHECKED & SET
Continued on next page
December 1, 2000
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