Make your own custom check6 calls.i use the voice recording on my MSN messenger,im that too a friend and click on save as,name the file custom check6.Then simply save it in your documents file.Open the AH folder,click on sounds folder,open the plane folder you want the check6 call to be put into.Once you put the custom 6 call file in the aircraft folder rename it:
check6
close the file and move on to the next plane.