What is the wake turbulence separation time for Category E, F, G, H, or I behind a Category C?

• A. 1 minute
• B. 2 minutes
• C. 3 minutes
• D. 4 minutes

Answer: (B)

The wake turbulence separation time for aircraft in categories E, F, G, H, or I following a Category C aircraft is indeed 2 minutes. This specific separation time is established to manage the risks associated with wake turbulence, which can significantly affect smaller or lighter aircraft trailing behind larger ones.

The rationale behind the 2-minute requirement stems from the need to ensure that the effects of wake vortices, which typically descend and drift horizontally, have dissipated sufficiently to allow for safe operations of the following aircraft. Categories E through I generally refer to smaller or less capable aircraft that are more susceptible to the wake turbulence generated by larger aircraft such as Category C, which encompasses larger jet aircraft. Therefore, maintaining this 2-minute interval helps to safeguard these lighter aircraft by providing ample time for any residual turbulence to settle before they follow the larger aircraft on approach or departure.

This separation rule is part of established aviation safety protocols aimed at minimizing the risk of incidents that can arise from wake turbulence. Other separation times in the options are either too short or not standard for these categories, hence the correct choice is the 2-minute interval.