What voltage charge can an aircraft build up while in flight or during high winds?

Aircraft can build up significant static electricity during flight due to air friction against the aircraft's surface, especially at high speeds and altitudes. This phenomenon is primarily the result of the movement of air molecules against the aircraft, which can strip electrons from the surface. The correct answer indicates that an aircraft can build up to 100,000 volts of charge under certain conditions.

This level of voltage can occur in various situations, such as during thunderstorms or when flying in areas with high wind speeds, where the interaction with rain, ice, or other atmospheric particulates intensifies the charging process. Understanding this capability is crucial because, in situations where an aircraft has built up this charge, grounding procedures must be carefully managed to prevent the discharge of static electricity in a manner that could pose risks to personnel or equipment upon landing.

It’s important to recognize that while lower voltages can be generated, the environment and specific conditions of flight can lead to the buildup eventually reaching this notable figure, emphasizing the need for appropriate safety measures regarding static electricity discharge in aviation operations.