N288DS, a P28A, is downwind for touch-and-go on Runway 28L. AAL432, an MD81, is departing Runway 28L. N288DS may not ___ until ___ minutes after AAL432 rotates.

• A. touch down; 3
• B. touch down; 2
• C. takeoff; 2
• D. roll; 3

Answer: (A)

The situation tests wake turbulence separation on the same runway. When a heavy aircraft departs and rotates, it leaves wingtip vortices that can linger near the runway and affect a following aircraft during landing. To reduce the risk of a wake encounter, the lighter aircraft performing a touch‑and‑go must not touchdown until a certain interval has passed after the heavy rotates.

In this scenario, the heavy departure has rotated, so the lighter aircraft must wait 3 minutes before touching down. The other options describe actions (taking off, rolling) that don’t fit the landing phase of the light aircraft, and the critical restriction is the touchdown point after rotation.