Richard,

whether the
parachute is the correct option to deal with vacuum failure or even total
electrical failure.


I don't think that is ever the question. If the pilot in command thinks it
is, then it is. I can't believe you're suggesting the speech at the grave
containing the words "Ah, but he chose the correct option" - which, in
effect, you do.

--
Thomas Borchert (EDDH)