During a lightning within 5NM call, what must all aircraft do?

During a lightning within 5 nautical miles call, aircraft are required to cease all ground operations and hold their position. This safety protocol is in place to protect the aircraft and its occupants from the hazards associated with lightning, which can be particularly dangerous during taxiing, takeoff, and landing phases when the aircraft is still in close proximity to the ground and other ground operations.

Holding position allows the crew to assess the situation and wait for the lightning threat to pass before resuming operations. This action not only ensures the safety of the aircraft but also prevents any potential damage or accidents that could occur due to sudden operations during a lightning storm.

It's important to recognize that continuing taxiing to parking or landing immediately might expose the aircraft to increased risk during such weather conditions, and flying to the nearest airport would be impractical and potentially hazardous in the face of a lightning threat directly nearby. Therefore, the requirement to cease operations and hold position is the most appropriate and safe response in this scenario.