B737NG HYD Pressurisation
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B737NG HYD Pressurisation
Question 1:
What is the significance of pressurising hydraulics during push back? (B737NG)
Is it only for charging the accumulator? Why can't we do it after starting the engines..
Question 2:
What's the best practise in pressuring Hydraulics? Should we pressurise both System A & B together, or should it be one at a time after an interval of few seconds?
What is the significance of pressurising hydraulics during push back? (B737NG)
Is it only for charging the accumulator? Why can't we do it after starting the engines..
Question 2:
What's the best practise in pressuring Hydraulics? Should we pressurise both System A & B together, or should it be one at a time after an interval of few seconds?
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Q1: what do you mean? I know some operators push back with the A pumps off as belt and braces for the nose wheel steering but I believe Boeing actually recommend having them on.
Q2: never heard of a specific procedure and I'm not sure of any issues of putting them both on at the same time but we do.
Q2: never heard of a specific procedure and I'm not sure of any issues of putting them both on at the same time but we do.
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B you can use without pin, but A needs the lockout pin installing in the nose.
Hint: I do like to have positive brake pressure when the tug wants to disconnect.
Hint: I do like to have positive brake pressure when the tug wants to disconnect.
