Paul, in the US, it can be "IFR controlled" and "VFR", where VFR aircraft
such as the glider can roam freely in VFR (Visual Flight Rules) or VMC
(Visual Meteorological Conditions) in the same airspace that IFR ATC
controlled traffic can be, the altitudes reported have been 13,500 to 16,500
MSL when they hit.

Positive Control (Class A) starts at 18,000MSL and up, and they were well
clear of any Class C or Class D airspace around Reno NV, so they were in
Class E airspace in VFR or VMC conditions.

I would have to check the local chart for Class G in that area. But Class E
exists over the Continental US from 14,500MSL to 17,999 and from FL600 and
up.

BT

"Paul Buchanan" wrote in message
...
I have a question which the report doesn't clarify.

What type of airspace was the glider and bizjet flying
in at the time?

Controlled or VFR?

Paul Buchanan

http://www.glidingstuff.co.nz