Aeronautical Terms beginning with H

Head-Up Display (HUD)

See Head-Up Guidance System (HGS)

Head-Up Guidance System (HGS)

A system which projects critical flight data on a display positioned between the pilot and the windscreen. In addition to showing primary flight information, the HUD computes an extremely accurate instrument approach and landing guidance solution, and displays the result as a guidance cue for head-up viewing by the pilot.

Height Above Touchdown (HAT)

The height of the DA above touchdown zone elevation (TDZE).

Highway in the Sky (HITS)

A graphically intuitive pilot interface system that provides an aircraft operator with all of the attitude and guidance inputs required to safely fly an aircraft in close conformance to air traffic procedures.