"Michael Nouak" writes:

NOT TRUE!! A B-747 has about the same glide ratio as the B-707s
that I flew for 17 years, 20:1 or better. From 35-37,000'(6nm),
we could do 125nm easily.

I'm not saying you're wrong, however I am curious: You "could do 125nm
easily" how? With the engines shut down? 'Cause that's what a glide is to
me. At idle you're still producing thrust, even more so a flight idle.

So, how did you achieve this ratio? In a true glide (presumable tried out in
a sim), or at flight idle? And if the latter, what would be the difference
in glide ratio compared to a true glide?

A real life example:

http://www.wadenelson.com/gimli.html

They managed about an 11:1 glideslope, but the flight crew had no
documentation on optimal glide speed for a 767 (they just guessed 220
kias), and they left the engines windmilling.


All the best,


David