The HSI may be configured to provide directional information in either ‘Heading’ or ‘Track/Heading’ modes. Selecting Heading Mode orients the HSI to display aircraft heading in a conventional manner with heading shown at the top of the compass card as indicated by the lubber line. In ‘Track/Heading' mode, the aircraft symbol and lubber line move to indicate heading and wind correction while ground track is shown at the top of the compass card. While in ‘Track/Headaing’ mode, the HSI will remain heading-based when the aircraft is on the ground or when the autopilot is in HDG mode. Refer to the AXIS™ installation manual for more information on configuring the HSI Orientation.