When volcanic ash is present, what is recommended to avoid requiring an aircraft to stop completely while taxiing?

When volcanic ash is present, a rolling takeoff is recommended to avoid requiring an aircraft to stop completely while taxiing because it minimizes the risk of ash accumulation on the aircraft's surfaces. Volcanic ash can severely damage engines, clog air intakes, and impact visibility. By performing a rolling takeoff, the aircraft maintains forward motion, which reduces the likelihood of ash settling on critical components such as the wings and engine inlets.

This technique allows pilots to achieve takeoff speed quickly while limiting stationary exposure to the harmful effects of the ash. This approach enhances safety by preventing prolonged ground operations in contaminated environments. It’s essential during these conditions to keep the aircraft moving as much as possible, as a complete stop could expose it to increased ash debris, while a full stop may not be necessary if the aircraft can safely manage a rolling takeoff.