On Fri, 21 Dec 2007 03:58:11 -0600, J a c k
wrote:
[snip]
Have you literally heard an aircraft you didn't first see?

I certainly have, and it was another glider. I don't recommend it.

When you do,
you may wish you had had some indication of its location prior to your
close encounter.

Bloody well right I did...

rj