I appreciate you guys response. I went back and did a third engine run, but the problem did not duplicate...
However, with the utility and booster rudder boost gauges, have you ever seen the needle in the gauge flux, meaning bounce up and down 3 to 4 times? Is this normal and is there an allowable flux as long as the flux returns to normal system pressure? I have never seen a hydrualic gauge flux. Usually, you will always get the initial drop once you have a demand on the system, but I have never seen needle bounce up and down and then stablize. What cause this flux with the rudder boost gauges?
thanks