What is the purpose of Block 5 on a flight strip?

The purpose of Block 5 on a flight strip is to provide standard takeoff information. This block specifically conveys critical details about the aircraft's departure, including the specific runway being used and any relevant procedures that the aircraft should adhere to during takeoff. Accurate and timely information in this section helps air traffic controllers ensure safe and efficient departures.

While filed true airspeed refers to the speed at which the aircraft intends to travel, it is not typically indicated in Block 5. Flight clearance status and weather advisories are also essential pieces of information for air traffic control but are captured in different sections of the flight strip, not specifically in Block 5. Understanding the standardized format of flight strips is vital for effective communication and coordination among air traffic controllers and pilots.