ping was detected. it was detected for 13 minutes. the reason that is the most promising is because of its quality is the word they used. the details like many others have been coming like clock work we get them every day from australian authorities. in the search for answer, information has been harder to come by. just as pamela brown worked to pin it down but she did not stop there. >> the bottom line this is a tiny piece of the puzzle and experts and sources are trying to figure out what this information about the co-pilot cell phone really means. what we do know here is that if any of the passenger phones were on and not in airplane mode they should have dinged that cell phone tower as well. and considering 30% of people forget to turn off their phones it's likely not just the co-pilot's phone. but the co-pilot's phone should have been off. so the question of course looms was it on from the beginning of