After UAL433’s takeoff roll, when can DAL201 start its takeoff roll?

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

Answer: (C)

In air traffic control, the timing of when one aircraft can begin its takeoff roll after another has departed is crucial for ensuring safe operations on the runway. When UAL433 has started its takeoff roll, the appropriate interval required before DAL201 can commence its own takeoff depends on several factors, including aircraft type, runway length, and the flight operations regulations in place.

The correct choice of allowing DAL201 to start its takeoff roll after 2 minutes is based on established safety protocols that consider the distance and time needed for the departing aircraft to climb safely and clear the runway area. This buffer helps ensure that there is sufficient separation to prevent wake turbulence and allows for a safe environment for takeoff.

In contrast, allowing DAL201 to begin its takeoff immediately might create a risk of being in the vicinity of UAL433 or facing issues related to wake turbulence, especially if the departing aircraft is a large one. Similarly, longer intervals, such as 1 minute or 3 minutes, may either be insufficient time for a safe separation or unnecessarily prolonged, delaying departures and affecting traffic flow when 2 minutes is deemed sufficient according to standard practices.