AIRSPACE

Set to 5 different clues across 5 published puzzles, most often “Pilot's zone” — The New York Times, Thursday, 25 July 2002.

8 letters

Every clue on record, most used first

Pilot's zoneonce
The New York Times — Thursday, 25 July 2002
Planes need permission to enter itonce
The New York Times — Thursday, 31 January 2002
Flying zoneonce
The New York Times — Friday, 29 June 2001
Area protected by military planesonce
The New York Times — Monday, 18 September 1995
It's guarded by military planesonce
The New York Times — Friday, 30 June 1995