"Mike Rapoport" wrote in message
ink.net...
"VFR on top" is an IFR operation requiring a clearance and the adherence
to both IFR and VFR rules at the VFR XX,500' altitudes..

http://www.faa.gov/ATpubs/PCG/V.HTM



"ATC authorization for an IFR aircraft to operate in VFR conditions at any
appropriate VFR altitude.."

Yes, but the point I was making (from the original) was that VFR-OT would be
conduced in Class A.

Class A, AIUI, contains NO "appropriate VFR altitudes".

The first point I disputed, and the one that many responders seemed to have
missed, was claiming VFR-OT at 33,500 feet.

Below Class A, I'm sure we've all done VFR-OT.