" wrote in message
hlink.net...
I'm reading "Fate is the Hunter" and just read something interesting.
Gann
states that they would climb to 100 feet above their cruising altitude
and
then descend the 100 feet back down. He called this "flying on the
step."
He claims that it bought them a few more knots of airspeed.

Has anyone heard of this? Is it normal practice? Or is it one of
those
practices that have been disproven?

Personally, I've never heard of this practice.


I believe flying "on the step" has been checked out quite well and found
to have no validity.

John Lowry
Flight Physics