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What does the abbreviation HSI represent?

  • A

    Horizontal Situation Indicator.

  • B

    Hybernating System Indication.

  • C

    Horizontal Slip Indicator.

  • D

    Horrifying Steep Inclination.

Refer to figure.
The Horizontal Situation Indicator (HSI) is a flight instrument that provides a visual display of the aircraft position.

Specifically, it combines information from the magnetic compass and a navigation instrument (VOR, ILS or GNSS).

This gives the pilot an indication of the aircraft's location in relation to the chosen course or radial. In addition, if ILS signals are used, information on glideslope deviation is also available.

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