What is the main purpose of a flight progress strip?

The main purpose of a flight progress strip is to provide a summary of flight details. This includes critical information such as the aircraft's identification, departure and destination airports, route of flight, altitude, and other relevant flight data. The flight progress strip serves as a vital tool for air traffic controllers, allowing them to quickly reference and manage multiple flights efficiently. By containing essential information in a compact, easy-to-read format, the flight progress strip helps ensure that controllers maintain situational awareness and can effectively coordinate traffic in the airspace.

While the other options present functions related to air traffic management, they do not encompass the primary role of a flight progress strip. For example, tracking taxiing positions and managing ground traffic are specific tasks related to ground control rather than general flight details, and indicating waiting times pertains more to flow management rather than summarizing flight information.