Hello,
first of all, adding custom airports was great idea!

I would like to ask you if it's possible to add some features:
- custom separation minima, f.ex. 5 NM
- TMA as polygon, not only circle
- aircraft entering TMA via entry point not holding over entry point but flying to another beacon and holding over there
- aircrafts entering TMA on defined levels on defined entry points
- arrivals descending higher than FL120

As for separation minima, not everywere we can enjoy 3 NM, many places have 5 NM or more.

As for shape of TMA, it can be easily overriden by drawing [line] in shape of TMA and setting center in the middle of created shape, but using entry points as defined beacons on drawed line is quite tricky because a/c are holding over this points. I tried use [transition1] section but with no luck. It would be very useful to define level of arriving a/c over entry point, as in real life. And it's odd but descendaltitude higher than 12000 ft is ignored, 12000 ft is assumed.

Once again, for me this game has second life, good job. If it's possible to add features mentioned above it would be great.

Thanx in advance,
Adam.