cab 3707,
Thank you; that's exactly what I needed to know! Last time I phoned he CAA medical dept they told me I couldn't instruct ab-initio students, but I hadn't read it anywhere and thought they were making up the rules as they went along. It's not what I wanted to hear, but at least means everyone is being consistent. Please could you post - or pm me - the link to that document.
Extra tests now booked for early September...I'll let you all know what happens.