The ADF - VOR selectors can be used to display the VOR or ADF bearing on all displays except the _____ mode.

The ADF - VOR selectors can be used to display the VOR or ADF bearing on all displays except the _____ mode.

• A. NAV
• B. ROSE
• C. PLAN
• D. ARC

Answer: (C)

The VOR/ADF bearing display depends on the navigation display mode. When the ND is in compass-oriented modes (such as ROSE or ARC) or in NAV mode, selecting a VOR or ADF with the corresponding selector causes the bearing to that station to be shown as a pointer or angular readout relative to the aircraft. This is useful for direct navigation because you can see whether you’re on the correct bearing to the navaid. In PLAN mode, the ND switches to a map-like plan view. This mode is intended for chart planning and situational awareness on a map rather than for following a bearing to a navaid. Because of the layout and purpose of PLAN, the bearing pointers to VOR/ADF are not displayed. So the bearing cannot be shown in PLAN mode, even though you can still select the navaid with the ADF/VOR selectors. That’s why PLAN mode is the exception.

The VOR/ADF bearing display depends on the navigation display mode. When the ND is in compass-oriented modes (such as ROSE or ARC) or in NAV mode, selecting a VOR or ADF with the corresponding selector causes the bearing to that station to be shown as a pointer or angular readout relative to the aircraft. This is useful for direct navigation because you can see whether you’re on the correct bearing to the navaid.

In PLAN mode, the ND switches to a map-like plan view. This mode is intended for chart planning and situational awareness on a map rather than for following a bearing to a navaid. Because of the layout and purpose of PLAN, the bearing pointers to VOR/ADF are not displayed. So the bearing cannot be shown in PLAN mode, even though you can still select the navaid with the ADF/VOR selectors.

That’s why PLAN mode is the exception.