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