What type of information is indicated by the beacon code on a flight progress strip?

The beacon code on a flight progress strip is specifically used to relay the aircraft's unique identification and transponder information. This four-digit code, also known as a transponder code or squawk code, is assigned to an aircraft by air traffic control and is utilized by secondary surveillance radar systems to identify and track the aircraft in the airspace.

This code is crucial for safety and efficiency in air traffic management, as it allows controllers to quickly ascertain which aircraft is which among potentially many in the same airspace. The transponder information provides not only identification but also assists in determining the aircraft's position and enhances situational awareness for air traffic controllers.

The other options, such as weather conditions, altitude, and departure times, are important operational details but are not conveyed through the beacon code itself. Instead, each serves different purposes in flight management and communication, highlighting why the beacon code's primary function centers around identification and transponder data.