noun
ADJECTIVE
▪ controlled , restricted
▪ international , national
▪ enemy
▪ British , French , US , etc.
VERB + AIRSPACE
▪ cross , cross into , enter , fly in , fly into , penetrate , stray into , use , violate
▪
The jet had crossed into Russian ~.
▪ leave
▪ close , open
▪
They have decided to open their ~ to commercial aircraft.
▪ control , defend
PREPOSITION
▪ in … ~
▪
The glider was in Dutch ~.
▪ out of ~
▪
They were now out of controlled ~.
PHRASES
▪ a violation of ~
▪
The president said that all future violations of our ~ would result in serious consequences.