Uninterrupted fuel supply in high bank angle and negative G

[wantobe]

... Centrifigal force was no factor for #2 tank, unfortunately the #1 tank unported during the turn. ... Single engine planes unport too.

I looked up "unport" in Merriam-Webster which said this word did not exist. What does it mean?

FAR 23.955. covers this for normal catagory.

FAR 23.955 does not mention negative G, only requires proper fuel flow in most critical attitude. This is a surprise for me since I expect it to impose fuel flow requirement under negative G for aerobatic airplanes (FAR 23 covers normal category and aerobatic category).

Is this the sort of condition that you are describing?

The condition I am concerned is long-duration negative G.

Thanx!