A FA20 is departing Runway 28R. A Bonanza is holding short of the runway at Intersection C, requesting takeoff. When is the earliest the Bonanza may begin takeoff roll?

• A. Immediately after FA20 takes off
• B. 1 minute after FA20 rotates
• C. 3 minutes after FA20 begins rotation
• D. As soon as FA20 passes

Answer: (C)

The Bonanza's request for takeoff must consider the wake turbulence generated by the departing FA20, which is a faster, larger aircraft. To ensure safety and reduce the risk of wake turbulence encounters, there are specific separation standards based on the size and type of aircraft involved.

In this scenario, the correct answer indicates that the Bonanza may begin its takeoff roll 3 minutes after the FA20 has begun its rotation. This timeframe allows sufficient separation for the wake turbulence to dissipate, ensuring that the Bonanza enters the movement area without the risk of being adversely affected by the turbulence left behind by the FA20.

Wake turbulence is a natural phenomenon created by aircraft, especially large ones, as they move through the air. The timing is crucial to minimize any potential hazards. By adhering to this guideline, air traffic control maintains safety protocols and protects all aircraft involved.