Between sunrise and sunset if distances can be determined by landmarks, what is the minimum distance from the landing threshold for a Category I behind a Category I?

• A. 1,000 feet
• B. 3,000 feet
• C. 2,000 feet
• D. 4,000 feet

Answer: (B)

The main idea is spacing for two Category I operations on final when distances can be judged visually in daylight. Even when you can determine distance using landmarks, a trailing Category I must still maintain a substantial buffer behind the leading Category I to account for wake effects and pilot reaction time. The required minimum distance from the landing threshold for the second Category I is 3,000 feet. This distance provides a safe margin for the trailing aircraft to land after the first and to clear the runway without entering disturbed air. The other options are either too short to ensure safe wake turbulence clearance or unnecessarily long, reducing traffic flow.