Which of the following is NOT one of the four TSA regulated security areas at an airport?

Which of the following is NOT one of the four TSA regulated security areas at an airport?

• A. Sterile Area
• B. SIDA
• C. Secured Area/SIDA
• D. Ventilation Shaft

Answer: (D)

Airports divide space into zones with restricted access to protect passengers and operations. The Sterile Area is the passenger area beyond screening where only those who’ve been screened can go. SIDA refers to areas that require an ID badge and controlled access for personnel. The Secured Area is the airside zone that also requires credentialed entry. A ventilation shaft, though part of the building, isn’t defined as a TSA-regulated security area and isn’t a recognized security zone with access controls. That’s why it’s not included among the TSA-regulated security areas.

Airports divide space into zones with restricted access to protect passengers and operations. The Sterile Area is the passenger area beyond screening where only those who’ve been screened can go. SIDA refers to areas that require an ID badge and controlled access for personnel. The Secured Area is the airside zone that also requires credentialed entry. A ventilation shaft, though part of the building, isn’t defined as a TSA-regulated security area and isn’t a recognized security zone with access controls. That’s why it’s not included among the TSA-regulated security areas.