737 Operations Manual
Non-Normal Checklists -
Hydraulics
Copyright © The Boeing Company. See title page for details.
NNC.13.6 D6-27370-400E-TBCE
MANUAL REVERSION
Condition: Both system A & B hydraulic pump LOW PRESSURE
lights illuminated accompanied by low system A & B
pressure indicates loss of both system A & B. Other
indications include:
• system A & B flight control LOW PRESSURE lights illuminated.
SYSTEM A AND B
FLIGHT CONTROL SWITCHES . . . . . . . . . . . . . . . . STBY RUD
SYSTEM A and B
HYDRAULIC PUMP SWITCHES . . . . . . . . . . . . . . . . . . . . . OFF
Note: Inoperative items:
• ground spoilers
• all flight spoilers
• nose wheel steering
• autopilot A & B
• yaw damper
Note: Thrust reversers and leading edge flaps and slats
have standby pressure. Trailing edge flaps have
alternate electrical power. Inboard and outboard
brakes have accumulator pressure only.
Plan for flaps 15 landing
Set VREF 15
Plan for manual gear and alternate flap extension.
[When the gear has been lowered manually, it cannot be retracted.
Alternate extension time to flaps 15 is approximately 2 minutes. When the
leading edge devices are extended by the alternate system, they cannot be
retracted unless hydraulic system B is operational and normal flap
operation is restored. The drag penalty with gear and/or leading edge
devices extended may make it impossible to reach an alternate field.]
Note: The crosswind capability of the airplane is greatly
reduced.
On touchdown, apply steady brake pressure without
modulating the brakes.
Do not attempt to taxi the airplane after stopping.
Continued on next page
December 06, 2002
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