Of the three axes in flight, this specifies the side-to-side movement of an aircraft on its vertical axis, as in skewing.

Above Ground Level, as a measurement of altitude above a specific land mass, and differentiated from MSL.

Automatic flight control system that provides inputs to the fight controls to assist the pilot in maneuvering and handling the aircraft.

Referring to the rear of the aircraft.

Altitude indicator. Displays the aircraft’s altitude above sea level.

Airman’s Information Manual – A primary FAA publication whose purpose is to instruct airmen about operating in the US airspace system.

Air Data Computer – A primary sensor-based navigation data source.

Air-Ground Ranging – Straight-line distance from the aircraft to a point on the ground.

A service operated by the appropriate authority to promote the safe, orderly, and expeditious flow of air traffic.

The shape of the wing when looking at its profile. Usually a teardrop shape.