1. An area where access, movement, or activities are restricted and monitored by authorities or designated personnel
The airport's controlled zone requires special clearance for entry.
A zona controlada do aeroporto requer autorização especial para entrada.
2. In aviation, airspace where air traffic control service is provided
The aircraft must follow specific procedures when entering the controlled zone.
A aeronave deve seguir procedimentos específicos ao entrar na zona controlada.
3. A designated area with regulated conditions or parameters, especially in industrial or scientific settings
The laboratory operates as a controlled zone to maintain sterile conditions.
O laboratório funciona como uma zona controlada para manter condições estéreis.