Timothy and bookworm,
Many thanks for the replies.
I was hoping to avoid using the one mil ONC charts. We used these last year and I wasn't impressed. A lot of the data was obsolete. Or have you another series of charts in mind, Tim?
bookworm, I've already e-mailed the Estonian and Lithuanian CAAs, to no avail thus far. The previous run of charts (which expired last year) have not been replaced, according to a Finnish colleague of mine and his usual source has no info on the subject. As I say, I've drawn a blank up to now, so I figured I'd pick the brains of PPRuNe.
Thanks again.