Plain English Meaning

The far edges and tips of the aircraft — wingtips, tail, nose, and propeller tips. The points that stick out furthest from the main body.

Full Definition

The outermost points of the airframe — the wingtips, the tail (vertical and horizontal stabilizer tips), the nose, propeller tips, and trailing edges of control surfaces. In the context of precipitation static, these are the locations where built-up electrical charge tends to discharge into the surrounding air.

Context Anchor

Seen in explanations of precipitation static, especially when describing where static charge tends to leave the aircraft and cause radio noise.