737 Flight Crew Operations Manual
Hydraulics -
System Description
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP 13.20.5
Automatic Operation
Automatic operation is initiated when the following conditions exist:
• loss of system A or B, and
• flaps extended, and
• airborne, or wheel speed greater than 60 kts, and
• FLT CONTROL switch A or B Hydraulic System ON
OR:
• the main PCU Force Fight Monitor (FFM) trips
Automatic operation:
• activates the standby electric motor–driven pump
• opens the standby rudder shutoff valve
• allows the standby system to power the rudder and thrust reversers.
• illuminates the STBY RUD ON, Master Caution, and Flight Controls
(FLT CONT) lights.
September 26, 2013
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