What is the difference between Security Directives and Information Circulars issued by the TSA?

The distinction between Security Directives and Information Circulars issued by the TSA primarily revolves around compliance requirements. Security Directives are mandatory instructions that airports and air carriers must follow to meet specific security needs or address identified threats. They have a legal enforceability aspect, ensuring that regulated entities adhere to the prescribed security measures.

In contrast, Information Circulars serve as informational resources that provide guidance or clarification on security practices, but they do not require mandatory compliance. While these documents may be recommended best practices, entities are not legally bound to follow them.

This understanding of the nature of these documents is crucial for airport operations and security management, as it helps delineate what must be implemented versus what is suggested for consideration or awareness.