FAA advisory circulars containing subject matter specifically related to Air Traffic Control and General Operations are issued under which subject matter?

• A. 70
• B. 90
• C. 60
• D. 80

Answer: (B)

Advisory Circulars are organized by subject matter codes, which helps you locate guidance by topic. The code that corresponds to Air Traffic Control and General Operations is 90, so ACs that deal specifically with ATC procedures, controls, and related operations are issued under that subject matter. The other codes represent different FAA topics, so they wouldn’t be ATC-focused. This is why 90 is the best answer.