"John Galban" wrote

I'm stumped. The only references to "unporting" that I know of are
conditions in a fuel or oil system when the plane's attitude causes
the port or pickup to be exposed to air. Never heard of an airframe
reference like that. Looking over the description, it sound more
like he was describing "flutter" of a control surface.

John Galban=====N4BQ (PA28-180)

Sounds more like blaketing? to me, when the surface is in an area that is
not receiving flow, because of a surface blocking the flow before it.
--
Jim in NC


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