Hi airac,
Thanks for your reply. Maybe I should email the editor of MATS1 and get his angle on it. Will they coincide? Who knows !!
To be honest, I don't give a hoot what I say as long as there is something in writing to back it up. I too have been in the business long enough to know that the first time anything goes wrong, they will quote the book at you.
Interesting point flyview - you are quite right, MATS 1 has the later date. As i say, there was nothing in the ATSIN to say you were to omit the established report, and the later MATS 1 still has it in.