When two aircraft request takeoff on parallel runways, what is your primary consideration?

• A. Maintain safe separation, including wake turbulence and the availability of crossing traffic.
• B. Choose the faster aircraft to depart first.
• C. Grant clearance to both without regard to separation.
• D. Delay both departures until the runway is clear.

Answer: (A)

The main idea is safety through maintaining proper separation between departures on parallel runways. When two aircraft want to take off at the same time on adjacent runways, you must ensure there is enough space so wake turbulence from one aircraft won’t affect the other and so traffic on intersecting paths or crossing movements won’t create a conflict. Wake turbulence can linger and drift, especially if the aircraft are different sizes, so you assess the required time and distance separation and whether crossing traffic can be accommodated safely before issuing simultaneous takeoff clearances. If those safety gaps can’t be established, you stagger or delay departures rather than proceeding with nothing but speed or with a clearance that ignores separation. This focus on safe separation, including wake turbulence and crossing traffic, is why it’s the best choice.