Sorry Don - try again. Following is quoted directly from Annex A of the Sporting Code covering rules for World and Continental Championships. It's terribly inconvenient for your argument:

4.1.2 Each competing sailplane shall be flown within the limitations of its Certificate of Airworthiness or Permit to Fly and:
a. Must have been issued a valid Certificate of Airworthiness or Permit to Fly not excluding competitions.
b. Shall be made available to the Organisers at least 72 hours before the
briefing on the first championship day for an acceptance check in the
configuration in which it will be flown. This configuration shall be kept
unchanged during the whole competition. Exception: In the Open Class only it
is allowed to change complete wing panels and/or winglets. No instruments
permitting pilots to fly without visual reference to the ground may be carried
on board, even if made unserviceable. The Organisers may specify
instruments covered by this rule in their Local Procedures.
..


On Friday, April 6, 2012 6:42:21 PM UTC-4, Don Johnstone wrote:
At 18:35 06 April 2012, John Godfrey QT wrote:


With all due respect, the RC has not "decided" to restrict anything.
What
=
the RC has done is provide a way for instrument manufacturers and
software
=
developers who choose to include AH capability in their product to remain
c=
ompliant with a very long standing (decades) FAI rule.

QT
Rules Committee

It is not an FAI Rule. Nothing to prevent the fitting or indeed use of AH
in civilised parts of the world. By all means restrict the members in your
own country if that is your wish but accept that it is totally your
responsibility not the FAI.