Heading and ground track in wind

In a crosswind, the aircraft’s heading and ground track differ. Drift angle is the difference between them. ^[130]

Compare heading and track

In level flight, hold a steady heading in a moderate crosswind. Compare the nose direction with the track shown on the HSI or map.

FSS describes drift angle, but its documentation does not establish that a separate drift bug appears in every build or display format. ^[130]