What is the minimum separation time for a Category I aircraft following a Category G aircraft on the same runway?

• A. 1 minute
• B. 2 minutes
• C. 3 minutes
• D. 5 minutes

Answer: (C)

The minimum separation time for a Category I aircraft following a Category G aircraft on the same runway is 3 minutes. This requirement is in place due to the differing performance characteristics and wake turbulence generated by the two categories of aircraft.

Category G aircraft are typically smaller, lighter, and generate less wake turbulence compared to larger aircraft types. However, the Category I aircraft, which could be larger and able to experience significant wake turbulence, must maintain adequate separation to ensure safety. The 3-minute interval allows for the dissipation of any potential wake turbulence, creating a safer environment for the following aircraft as it takes off or lands.

In operational contexts, air traffic controllers utilize these guidelines to formulate safe traffic flows and prevent incidents that could arise from wake turbulence encounters, hence the established 3-minute separation time is crucial for this purpose.