Recently I have had an issue whereby ATC gives me instructions but there is no sound nor running text.The only reason I know I am being given these instructions is because the co-pilot confirms back the message to ATC.
Now this does not happen all the time during the flight just on an intermitent basis perhaps say 2 out of 10 instruction messages.
However,I guess that this should not happen at all and I am therefore wondering if you can help please.
Many thanks in anticipation.