Hi Crash,
Remember there are two parts. The MATZ and the ATZ inside the MATZ (the magenta bit). The ATZ can be active independantly of the MATZ and may have different hours. The ATZ does need a clearance.
Generally Leuchars is H24 for both unless notamed differently.
What you're doing sounds fine to me.
D.O.
Edited to say sorry. Looks like johnm covered this already.
Last edited by dont overfil; 27th Jul 2012 at 12:45.