"Paul Tomblin" skrev i melding
...
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

On Sun, 7 May 2006 11:17:04 +0200, "Frode Berg"
wrote in ::

I did not know this.

On all the definitions of various air classes I've seen, all have stated
"prohibited for VFR" on the class A airspace.

Are you sure about this?

What's the source?

Frode


http://ecfr.gpoaccess.gov/cgi/t/text....1.3.10.2.4.20

§ 91.135 Operations in Class A airspace.
top
Except as provided in paragraph (d) of this section, each person
operating an aircraft in Class A airspace must conduct that operation
under instrument flight rules (IFR) and in compliance with the
following:

(a) Clearance. Operations may be conducted only under an ATC clearance
received prior to entering the airspace.

(b) Communications. Unless otherwise authorized by ATC, each aircraft
operating in Class A airspace must be equipped with a two-way radio
capable of communicating with ATC on a frequency assigned by ATC. Each
pilot must maintain two-way radio communications with ATC while
operating in Class A airspace.

(c) Transponder requirement. Unless otherwise authorized by ATC, no
person may operate an aircraft within Class A airspace unless that
aircraft is equipped with the applicable equipment specified in
§91.215.

(d) ATC authorizations. An operator may deviate from any provision of
this section under the provisions of an ATC authorization issued by
the ATC facility having jurisdiction of the airspace concerned. In the
case of an inoperative transponder, ATC may immediately approve an
operation within a Class A airspace area allowing flight to continue,
if desired, to the airport of ultimate destination, including any
intermediate stops, or to proceed to a place where suitable repairs
can be made, or both. Requests for deviation from any provision of
this section must be submitted in writing, at least 4 days before the
proposed operation. ATC may authorize a deviation on a continuing
basis or for an individual flight.

[Doc. No. 24458, 56 FR 65659, Dec. 17, 1991]