Figure 3A-8 – Primary Flight Display Failure (MFD Shown)
NOTE: The alerts box will display GMA 1 FAILURE (audio panel). This
failure message is due to the COM 1 automatically switching to 121.5
MHz, and the GMA 1 not being able to communicate with the #1 PFD. If
COM 1 is used, transmissions will be broadcast on 121.5 MHz. Although
GMA 1 FAILURE is annunciated, some functions of the #1 GMA will still be
operational.