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.
NP.21.28 D6-27370-866-EGP
CAUTION: Do not hold or turn the nose wheel steering wheel
during pushback or towing. This can damage the nose
gear or the tow bar.
CAUTION: Do not use airplane brakes to stop the airplane during
pushback or towing. This can damage the nose gear
or the tow bar.
Transponder mode selector .....................................XPNDR F/O
Set or release the parking brake as directed by ground handling
personnel. C or F/O
When pushback or towing is complete:
Verify that the tow bar is disconnected C
Verify that the nose gear steering lockout pin is removed C
System A HYDRAULIC PUMPS switches – ON F/O
Verify that the system A pump LOW PRESSURE lights
are extinguished
Verify that the system A pressure is 2800 psi minimum.
Engine Start Procedure
Normal starter duty cycle:
• Multiple consecutive start attempts are permitted. Each start
attempt is limited to 2 minutes of starter usage.
• A minimum of 10 seconds is needed between start attempts.
Extended engine motorings:
• Starter usage is limited to 15 minutes for the first two extended
engine motorings. A minimum of 2 minutes is needed between
each attempt.
• For the third and subsequent extended engine motorings, starter
usage is limited to 5 minutes. A minimum of 10 minutes is needed
between each attempt.
Normal engine start considerations:
• do not move an engine start lever to IDLE detent early or a hot start
can occur
• keep a hand on the engine start lever while monitoring RPM, EGT
and fuel flow until stable
• if fuel is shutoff accidentally (by closing the engine start lever) do
not reopen the engine start lever in an attempt to restart the engine
September 15, 2016
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