that is the system that traps mitts the health of the airplane back to the airline. we haven't heard from the maairlines what is on the vh5 ros and two hf radios as well. >> bog designed this very well. >> it is a great airplane. >> that's what i wanted to ask you about so well. you know the engineers who put the aircraft together. they take pride in that. tell us about that. >> the triple seven. this is only the third accident or incident with the airplane. britain airways crash landing in london and due to the fuel starvation because of icing. and san francisco crash with asiana airlines last year, pilot error on that and now this one. this airplane just doesn't break.