that i don't know, but there was NO damage to the radios in the helicopters... putting a call out on guard isn't rocket scienceMy guess is that that first hour was (without a Captain) "nothing but "***holes and elbows" -- trying to save a ship with a big hole in the hull.
Not sure comms was a priority. I, for one, have been studying this since the news came out -- and I never thought of the comms in the birds...
Good thinking!