NSEU
Quote:
"If a pressure difference opens the valve.. I assume this means either way."
Never assume, Steve
Yes good idea, but the B777 AMM are very sketchy on a lot of descriptions, and its all I have to go on. I would have thought that if it only opened on surge tank overpressure, it would have said that, and not pressure difference.
By the way the B777 B1 course notes are lifted 100pc from the AMM Pt 1. So no good looking in there!