"Byron J. Covey" wrote in message . com...
The Grumman Ag Cat, among others, was designed with a stronger than required
(for mission or for certification) cockpit section/seat/roll-over
protection/restraint system. There are numerous examples of crashes that
pilots walked away from.

Ron Machado, in a safety seminar I went to years ago, explained how a
certificated light aircraft is designed so that if you can stop it in
as much as a tennis court, (18g decel) the cockpit will not collapse
and you can unstrap and walk away. Bruised from the belts, perhaps,
but otherwise unscathed.