If lightning is within 10 miles, what should aircraft in the pattern do?

When lightning is within 10 miles of an airport, it poses a significant safety hazard to aircraft, particularly those in the pattern. The correct action is for aircraft to hold in their assigned areas and prepare to divert. This decision is made to ensure the safety of the aircraft and its occupants while reducing the risk of encountering severe weather conditions.

Holding in assigned areas keeps aircraft from being in a situation where they may need to perform last-minute maneuvers that could lead to dangerous situations, especially if lightning strikes occur. It allows pilots to remain vigilant and monitor the weather while awaiting further instructions or conditions to improve.

Preparing to divert is also an important consideration, as the presence of lightning can lead to severe turbulence, difficult visibility conditions, and other atmospheric disturbances that could endanger the flight. By planning a diversion, pilots ensure they have a safe alternative in case the weather does not improve, thereby prioritizing safety in potentially hazardous conditions.

In contrast, continuing the approach as normal could expose the aircraft to unnecessary risk, while increasing altitude without clearance or departing to the nearest airport may not be the most efficient or safe response given the proximity of the lightning. Overall, holding in assigned areas and preparing to divert aligns with best safety practices in aviation during thunderstorm activity