This question has now been answered on the "Ground School" section of the <a href="http://www.oxfordaviation.net/forum" target="_blank">@SK OXFORD FORUMS</a>.
Click on the above link or go to <a href="http://www.oxfordaviation.net/forum." target="_blank">http://www.oxfordaviation.net/forum.</a>
All the best,
Paul
[ 01 February 2002: Message edited by: Paul Hickley, Gen Nav Spec, Oxford ]
[ 01 February 2002: Message edited by: Paul Hickley, Gen Nav Spec, Oxford ]</p>