TCAS Fan wrote:
" If only Air/Ground Communications Service is provided, they would lose the ATZ."
Incorrect.
If a licensed airfield then you can have an ATZ with A/G (see EGPG - Cumbernauld)
If unlicensed, then to have an ATZ you need to have FISOs operating radios. So Glenrothes - now unlicensed due to the changes that allow ab initio traning from unlicensed airfields - has lost its ATZ.
The only logic seems to be that "serious" airfields should have ATZs!
(Two of Scotland's four largest recreational airfields - based on aircraft based there - would therefore not be allowed ATZs.)
ps Strathaven is also, it seems, ineligble for a four-letter ICAO code because most of the aircraft based there are microlights and homebuilts.