Which information is always available on the HSI when it is connected to VOR/VOR RNAV/GPS/ADF avionics?

Which information is always available on the HSI when it is connected to VOR/VOR RNAV/GPS/ADF avionics?

• A. Heading
• B. Bearing to ADF
• C. Bearing to VOR waypoint
• D. Bearing to GPS waypoint

Answer: (A)

The key idea is that the HSI always uses the aircraft’s heading information as its orientation reference. The heading comes from the aircraft’s heading source (magnetic compass or AHRS) and is independent of any nav signals you’re using. Because the HSI’s primary role is to show where the aircraft is pointing, heading is always available and displayed, even if VOR, RNAV, GPS, or ADF data aren’t being used or aren’t providing bearings at the moment. Bearings to a VOR, GPS waypoint, or ADF station depend on the respective navigation receivers being active and selected, so they aren’t guaranteed to be shown at all times. That’s why heading is the information that’s always available on the HSI when connected to those avionics.

The key idea is that the HSI always uses the aircraft’s heading information as its orientation reference. The heading comes from the aircraft’s heading source (magnetic compass or AHRS) and is independent of any nav signals you’re using. Because the HSI’s primary role is to show where the aircraft is pointing, heading is always available and displayed, even if VOR, RNAV, GPS, or ADF data aren’t being used or aren’t providing bearings at the moment.

Bearings to a VOR, GPS waypoint, or ADF station depend on the respective navigation receivers being active and selected, so they aren’t guaranteed to be shown at all times. That’s why heading is the information that’s always available on the HSI when connected to those avionics.