Plain English Meaning
The pinkish-purple lines on a glass cockpit display that show where the aircraft is going to be in a few seconds if nothing changes. They give the pilot a forward-looking picture of the airplane's path, not its current state.
Full Definition
On an electronic flight display, magenta-colored lines or symbols used to indicate predictive or trend information, most commonly the projected flight path or position of the aircraft a set number of seconds into the future based on current performance.
Context Anchor
Seen on glass-cockpit displays when watching airspeed or altitude change during , , , or .