Bearing Distance Heading Indicator (BDHI)

1. Heading Selector: Selects heading, used by Autopilot NAV Mode
2. Heading Bug: Displays selected heading.
3. Small Needle: Always displays bearing to the VOR Station selected.
4. Large Needle: Displays bearing to navigation source as selected by the Mode Selector knob. For example, if NAV is selected on Mode Selector, bearing displayed will correspond to the INS Waypoint.
5. Distance Drums: Provides distance, in nautical miles, to navigation source as selected by the Mode Selector knob.
6. Mode Selector: Selects the navigation source
7. NAV CV: Provides bearing and distance to tuned VOR
8. NAV: Assuming the INS System is aligned, and a valid waypoint is entered and selected, it will provide bearing and distance to this waypoint
9. TAC: Provides bearing and distance to tuned TACAN Station
10. VAD: Not Modeled
11. RHO: Not Modeled
12. THETA: Not Modeled
13. TEL: Not Modeled

VOR and TACAN Selector Panels

1. VOR/ILS Frequency Selected Drums
2. VOR Mode: AUTO/Manual, no sim function
3. VOR Frequency Selector Knob, Integer Part
4. VOR Frequency Selector Knob, Decimal Part
5. TACAN Channel Selector Knob, Hundreds and Tens
6. TACAN Mode Selector: OFF/REC/TR/AA
7. TACAN Channel Selector Knob, Units
8. TACAN Channel Selected Drums
9. TACAN X/Y Mode Switch