Hi again Hagar ,
I went back to the original sound and tried everything and could not get it to hang up at all . Selected other planes just fine and back to the CV240 . Just a quirky thing I guess and would bet it will happen again at some point . I have only had it happen with the Convair for some reason , but is not a big problem unless it happens every time I fly that particular plane . Nobody else seems to have had that problem .
Thanks for your investigation Hagar ,
Jamie