MODULAR RADIO SYSTEM – CONTROLS AND
INDICATORS
PFD (PRIMARY FLIGHT DISPLAY)
1 Radio window
2 Cursor
3 Active frequency
4 Preset frequency
On PFD:
• COM1 and COM2 radio active frequencies are always in view
• The NAV frequency window shows NAV1 or NAV2 active frequency
in accordance with the selected Primary Navaid (see ch. 34-00-00)
• The XPDR window shows the ATC Transponder active code for
Mode A when the Transponder is active; it shows STBY STBY
when the Transponder is in Standby mode
When the cursor is on a Radio window, both the active and the preset
preset values are shown.