L-1011 Navigation: RDDMI (34-6)

The RDDMI's are located on the Captain and F/O's instrument panels. They display the following NAV data:

• NAV 1 DME
• NAV 2 DME
• And a combination of VOR and ADF directional information, depending on pilot selection.

The VOR and ADF source selection is made with the black switches on the bottom left and bottom right of the instrument. A flag right above the switch shows which NAV source is being displayed by which needle.