Federal Aviation Regulations Practice Test 2025 – Complete Exam Prep

Part 91 of the Federal Aviation Regulations (FAR) is specifically dedicated to the general operating and flight rules applicable to all aircraft operations in the United States, including those in controlled airspace. This part covers a wide range of topics such as pilot certification requirements, aircraft equipment requirements, and various operational rules that must be adhered to when flying in controlled airspace.

In controlled airspace, pilots must comply with specific procedures and communication protocols to ensure safety and efficiency when sharing that space with other aircraft. Part 91 establishes the fundamental rules under which pilots must operate, including altitude regulations, airspeed restrictions, and the requirement to establish communication with air traffic control.

The other parts listed focus on more specialized areas: Part 121 pertains to scheduled air carriers, Part 135 covers on-demand air carriers and commercial operators, while Part 65 deals with the certification of airmen and airwomen, including the requirements for different pilot and ground instructor ratings. None of these parts are primarily concerned with the operational regulations in controlled airspace like Part 91 is.