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Showing results for tags '737ng; huydraulic; startup;'.
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Most engine start procedures I've seen and followed have both Engine Hydraulic Pumps ON - and both Electric Hydraulic Pumps OFF Then I stumbled on this YouTube video and noticed he has the two left switches OFF and the two right switches On while starting Engine 2. See it at the 1:30 mark in the video: https://youtu.be/ae20L78imO4?t=1m20s Is he doing it right? Is he doing it wrong? Does it matter? What's the difference? I thought the engine pumps should always be on to preserve the solenoid life... perhaps that's trivial. Anyway... the video made me curious.