NahMy mate, an aero engineer, has told me a similar story, they test their planes by chucking birds at them. Probably defrost them. I wouldn't be surprised if they didn't, cos a safety margin is an engineers best friend.
He's told me some scary stories about planes.
(,
Tue 11 Nov 2003, 20:26,
archived)
He's told me some scary stories about planes.