The designated space on the flight progress strip for the Mode 3/A beacon code is what?

The designated space on the flight progress strip for the Mode 3/A beacon code is indeed 27. This space is specifically allocated for the transponder code, which is crucial for air traffic control in identifying and tracking aircraft. The Mode 3/A code is a four-digit code that is used to uniquely identify aircraft and allows for effective coordination in the airspace.

In the context of air traffic control, using the correct space for entering the beacon code ensures that all relevant information is clearly presented on the flight progress strip. This facilitates efficient communication and situational awareness among controllers, which is vital for maintaining safety and order in busy airspace. Other spaces on the flight progress strip are designated for different types of information, and understanding these allocations is key for controllers when managing flight data accurately.