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From the FAA library

  • Chapter 5: Flight Instruments › Analog Pictorial Displays › Horizontal Situation Indicator (HSI)

    right deviations from the course selected with the course-indicating arrow, operating in the same manner that the angular movement of a conventional VOR/LOC needle indicates deviation from course. The desired course is selected by rotating the course-indicating arrow ... relation to the azimuth card by means of the course select knob. This gives the pilot a pictorial presentation: the fixed aircraft symbol and course deviation bar display the aircraft relative to the selected course, as though the pilot were…

  • Chapter 9: Navigation Systems › Traditional Navigation Systems › VOR/DME RNAV Components

    deck instrument displays vary among manufacturers, most are connected to the aircraft CDI with a switch or knob to select VOR or RNAV guidance. There is usually a light or indicator to inform the pilot whether VOR or RNAV ... selected. [Figure 9-23] The display includes the WP, frequency, mode in use, WP radial and distance, DME distance, groundspeed, and time to station. Figure 9-23. Onboard RNAV receivers have changed significantly. Originally, RNAV receivers typically computed combined data…

  • Chapter 16: Navigation › Using the VOR › Horizontal Situation Indicator

    left or right deviations from the course selected with the course select pointer; operating in the same manner, the angular movement of a conventional VOR/LOC needle indicates deviation from course. The desired course is selected by rotating the course select ... pointer, in relation to the compass card, by means of the course select knob. The HSI has a fixed aircraft symbol and the course deviation bar displays the aircraft’s position relative to the selected course. The TO/FROM indicator…