WetCompass, you are correct, the mayday call is a little strange. I guess it was a heat of the moment thing and far from rehearsed. If seems like he’s calling mayday for the downed aircraft, but realistically he’s declaring a mayday for the situation that covers both aircraft. What I do personally find a little strange (and again, with a shot of adrenaline thrown in there) is that he mentioned words to the effect of “we can see a splash mark; I don’t know what’s going on down there.” It’s just how he reacted to the situation, but it’s like he didn’t know what happened to the other aircraft.