737 Flight Crew Operations Manual
Normal Procedures -
Amplified Procedures
Boeing Proprietary. Copyright © Boeing. May be subject to export restrictions under EAR. See title page for details.
D6-27370-866-EGP NP.21.27
If pushback is needed and the nose gear steering lockout pin
is not installed:
WARNING: Do not pressurize hydraulic system A.
Unwanted tow bar movement can occur.
System A HYDRAULIC PUMP switches – OFF
Verify that the system A pump LOW PRESSURE lights are
illuminated.
System B electric HYDRAULIC PUMP switch – ON
Verify that the system B electric pump LOW PRESSURE light
is extinguished.
Verify that the brake pressure is 2,800 psi minimum.
Verify that the system B pressure is 2,800 psi minimum.
If pushback is not needed, or if pushback is needed and the nose gear
steering lockout pin is installed:
Electric HYDRAULIC PUMP switches – ON
Verify that the electric pump LOW PRESSURE lights are
extinguished.
Verify that the brake pressure is 2,800 psi minimum.
Verify that the system A and B pressures are 2,800 psi minimum.
ANTI COLLISION light switch ..................................... ON F/O
Trim .................................................................................Set C
Check each trim for freedom of movement.
Stabilizer trim – ___ UNITS
Set the trim for takeoff.
Verify that the trim is in the green band.
Aileron trim – 0 units
Rudder trim – 0 units
Call “BEFORE START CHECKLIST.” C
Do the BEFORE START checklist. F/O
Pushback or Towing Procedure
The Engine Start procedure may be done during pushback or towing.
Establish communications with ground handling personnel. C
September 15, 2016
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