How far should an aircraft maintain distance from thunderstorms?

Maintaining a safe distance from thunderstorms is crucial for flight safety due to the hazardous conditions associated with these weather phenomena. The correct choice suggests that an aircraft should maintain a distance of 20 miles or more upwind from thunderstorms. This margin is recommended because thunderstorms can produce severe turbulence, lightning, hail, and wind shear, which can pose significant risks to aircraft.

The rationale for choosing to stay upwind as opposed to downwind lies in the behavior of thunderstorm-related phenomena. Upwind positioning allows the aircraft to avoid the downdrafts and potential microbursts that can occur in and around thunderstorms. By remaining at least 20 miles away, pilots ensure that they have ample space to navigate safely while also considering the reach of these dangerous weather conditions.

Additionally, while maintaining distance from thunderstorms downwind is also a consideration, it is important to prioritize positioning upwind in order to enhance safety and avoid the associated hazards.