What is the term for the main document that outlines the privileges and limitations of a pilot?

The main document that outlines the privileges and limitations of a pilot is the Pilot License. This license serves as official verification that a pilot has acquired the necessary training, skills, and knowledge to operate an aircraft within specified parameters. It includes details such as the types of aircraft the pilot is authorized to fly, the ratings they hold (for example, instrument or multi-engine ratings), and any limitations that may apply, such as medical or age restrictions.

While a Flight Log is a record of a pilot's flying hours and experiences, it does not confer authorization or define the pilot's capabilities. A Flight Diary is typically a personal record of flying experiences and lessons learned, not an official document. An Operating Handbook, generally refers to the particular set of instructions and information for a specific aircraft model, delineating its performance and operational procedures, but it does not pertain directly to the pilot's qualifications. Hence, the Pilot License is the correct term to encompass the privileges and limitations essential for a pilot's operations.