What is the purpose of an Advisory Circular (AC) issued by the FAA?

The purpose of an Advisory Circular (AC) issued by the FAA is primarily to inform the public about nonregulatory material. These documents serve as guidance to help stakeholders understand complex issues regarding aviation but do not have the force of law like binding regulations. ACs cover a variety of topics and issues, providing best practices, standards, and recommended procedures to enhance safety and compliance within the aviation community.

Unlike regulatory documents that impose mandatory requirements, ACs allow for a degree of flexibility and help in disseminating important information without creating enforceable obligations. This makes them valuable resources for pilots, operators, and anyone involved in aviation as they navigate best practices and safety protocols.

In contrast, the other options imply a degree of regulatory enforcement or a mandate that does not align with the function of Advisory Circulars. They do not serve as training manuals or provide mandatory guidelines, nor do they impose binding regulations, as those functions are covered by other legal frameworks within the FAA regulations.