General

The radio magnetic indicator (RMI) shows bearing to a VOR or ADF station relative to the airplane magnetic heading. The RMI has two bearing pointers. The bearing pointers can show ADF or VOR data. You use the selectors on the front of the RMI to select between VOR or ADF as the source of data. The RMI has two amber flags, one for each bearing pointer. The flags come into view if the selected data source inputs fail.

General

The ADF data shows on the captain and first officer NAV displays in the VOR, APP, and MAP modes. The bearing pointers around the compass rose show VOR or ADF bearing data. To show ADF bearing, set the EFIS control panel VOR/ADF switches to ADF and set the EFIS mode selector to the VOR, APP, or MAP display modes. The bearing pointers are cyan when they show ADF data. The ADF source data and frequency or identifier shows in cyan at the bottom corners of the displays.

The bearing pointers show in the expanded and centered displays. The bearing pointers show on the expanded displays if the ADF bearing is in the compass rose display limit. This graphic shows the displays in the centered NAV display mode.

Bearing Pointers

Only bearing pointer 1 can show ADF bearing. To show ADF bearing, set the VOR/ADF 1 switch to the ADF position. When you select the ADF position, the bearing pointer shows in cyan. The DEUs remove the bearing pointer when the receiver data goes to an NCD condition, or when you set the VOR/ADF 1 switch to the off position.

ADF SYSTEM - EFIS NAV DISPLAYS