In a previous article, "Frode Berg" said:
Yes, and class A is prohibited for VFR.

I understand there are exceptions to that rule, especially for sailplanes
riding mountain waves.


--
Paul Tomblin http://xcski.com/blogs/pt/
"Imagine if every Thursday your shoes exploded if you tied them the
usual way. This happens to us all the time with computers, and nobody
thinks of complaining." -- Jef Raskin, interviewed in Doctor Dobb's Journal