Which area of an airport is characterized by the highest security levels?

The Secured Area, often referred to as SIDA (Security Identification Display Area), is characterized by the highest security levels within an airport. This area is specifically designated for access control to enhance security measures, ensuring that only authorized personnel are allowed to enter. It typically includes areas where passengers are screened and waiting for boarding, along with sections of the terminal that are limited to airline staff and security personnel.

Access to this area requires a valid identification badge, and is monitored by security systems to prevent unauthorized entry. The design and operational procedures in the Secured Area are structured to maintain stringent security checks, addressing the potential risks associated with airport operations.

In contrast, while the Sterile Area facilitates passenger movement post-screening, the Air Operations Area pertains primarily to aircraft operations and does not include as stringent security measures for personnel. The Security Identification Display Area refers more to the identification and visual access control aspect rather than the overall highest security levels that are implemented in the Secured Area.