"Wayne Paul" wrote

By the way, the mountain in the above link is 12,600 feet. When flying in
this type of terrain I like to be as high as possible. (See:
http://www.soaridaho.com/photogaller.../17900_MSL.jpg,
http://tinyurl.com/yu4oym and http://tinyurl.com/2haboz) The valley
floors in this part of Idaho are between 6 and 7 thousand MSL.

Beautiful, but foreboding, isn't it?

Was this in the winter? It suddenly occurred to me that these "un-natural"
flying machines have no engine, thus no heat, right? It must get rather
cold up there at nearly 18,000 feet, in the winter, with no heat - or is
there some fuel fired heat of some type?

How cold have you seen it get in the cockpit, and how do you deal with it
being that cold? How about instruments; with that cold, do they continue to
work well, or are there some tricks about that?
--
Jim in NC