Plain English Meaning
A small cross symbol printed on an approach chart that shows pilots exactly where the final descent toward the runway starts on a non-precision approach.
Full Definition
On an instrument approach chart profile view, a cross-shaped symbol that marks the precise final approach fix (FAF) for a non-precision approach. It identifies the point where the final, descending segment of the approach officially begins.
Context Anchor
Seen in the profile view on FAA instrument approach charts, especially on nonprecision approaches.
Derivation
Named after the eight-pointed cross historically with the Knights of Malta. The shape was adopted as a chart symbol because it is distinctive and easy to spot among other on a busy approach plate.