the last transmission was at 1:07, the acars system wasn't supposed to report back for another 30 minutes, 1:37, well after the time that the pilot said "all right, good night." listen to what the ceo had to say yesterday at the press conference. >> the acars -- last acars transmission was 1:07. okay. we don't know when the acars was switched off after that. it was supposed to transmit 30 minutes from there another transmission, but that transmission did not come true. that was the very last transmission was 1:07. >> reporter: okay. didn't come true. but here's the point. the pilot said "all right, good night" at 1:19. we know that the transponder went out at 1:21. we don't know that acars was