Plain English Meaning

A system that works out where the aircraft needs to point to follow the chosen route or approach, then shows the pilot a visual cue on the attitude indicator saying 'fly this pitch and bank.' The pilot just keeps the aircraft symbol matched to the cue, and the aircraft ends up where it needs to be. The same cues can also drive the autopilot.

Full Definition

An electronic flight instrument system that computes and displays steering commands to the pilot, showing the pitch and bank attitudes required to follow a selected flight path. The commands appear as command bars (or a similar cue) on the attitude indicator. The pilot flies the aircraft manually to keep the aircraft symbol aligned with the command bars, or the same commands can be to an autopilot which then flies the aircraft automatically. Inputs come from sources such as the system, (, , ), and , processed through a driven by selections made on a .