About the PA button


Pilot or Copilot announcement via cabin speaker

    Pressing the PA button directs pilot or copilot Mic audio to the cabin Speaker    

only when the PTT button is actuated

    The PA button over rides the SPKR button.    
    Radio transmissions cannot be made in PA mode unless also in COM1/2 mode    
    Refer to the GMA 340 Audio Panel pilots guide for further details of this mode    
    This mode would not normally have any application in VH-IDT