Airbases, Datalink changes, IFF and more. Airbase operations An expected update, airbases now have dedicated ground, tower, and arrival/departure frequencies and menus. Airbases now handle traffic differently, both on the ground and in the air. Airbase ground control will issue better taxi instructions, and will hand you off to the tower frequency when you reach the runway. This is all handled automatically through the briefing process, using the data cartridge to assign each