In article ,
Jose wrote:

Which got me thinking - maybe the FAA isn't so crazy after all. If frost can
form while the plane is just sitting there, why could it not form while the
plane is flying? (yeah, there's some frictional heating, but we could lower
the temp a bit more, no?) And if frost isn't such a good thing to have on
takeoff, it's probably not so good in flight either.

Any thoughts? Have you seen this before?

This in-flight frost is called ice. I've never experienced icing conditions
but alway thought it was the leading edges that collect ice.

--
Bob Noel
(goodness, please trim replies!!!)