Airfield SPAA has a delayed reaction that lies to the player about their range

GRB Airfield SPAA does not begin firing until you’re within 1KM of its firing range turning back out of its range results in death

Lying to your playerbase is never a good design choice

Push airfields further back stop coddling players by spawning them within 2KM of their airfield this increases CAS frequency due to short rearm times and increases Airfield camping since you can sorty out of its range to effectively cover the battlefield then return within 1 minute flight time