Page 4 - Acars System News Today : Breaking News, Live Updates & Top Stories | Vimarsana

How, we'll have views on that. but how or why this half ping is relevant. but if they can prove the integrity of that half ping, then it adds one more if you like dot in the chain and you start to now know a little bit more about where the plane went down. because you're no longer -- you've got another point of reference. and you can coordinate that with how much fuel there was and what point you believe the plane would have been in. >> let me say it's great to have you back on cnn though not under these circumstances certainly. what do you make of this so-called partial ping? >> i think it's ...

Aircraft, it cannot only go through the acars system, but it can go directly. so this indicates to me something happened. electrical change, the engines had come offline. >> jeff wise, this make sense to you, something at the end there, that it was trying to communicate with the satellite? >> we're really waiting for more information from inmarsat. i agree this is exciting news, not only for that partial ping, but we were given a lot more data about what transpired between the aircraft and the satellite and we also learned how inmarsat was able to use that information to deduce it has to be th...

After 1:07 the acars system would have triggered the same tee vi device to communicate. >> more than seven hours between the last acars and then this final communication, or attempted communication. seven hours. that mystery what was going on for those seven hours in that aircraft. david gallo, how optimistic are you at this point? you co-led the search for air france flight 447. you confirmed debris after a couple of days, a few days. started to retrieve debris on day five. still took five years to obtain the flight recorders. we're in the third week of this and still no debris. >> anderson, ...

Their rights are and what is in the cargo holds of the planes. passengers as of now have no right to know what is in the cargo hold of the plane they are flying. they can't ask about the acars system on board the aircraft, correct? >> that's right. they have no way to find out, no way to ask. it's difficult for them to get information about how their airline stacks up against others. all those questions about a carrier that would help you judge whether you want to fly on that carrier and whether it's safe are locked away in the -- you know the records of the carrier. if you ask the federal avi...

Function shortly after the last communication. it could have experienced an electrical problem. the component could have failed or it could have been switched off. we don't know. but what we do know is that the data link system known as acars was stopped from transmitting data, but the unit itself continued to talk to the satellites. that takes specialized knowledge and it takes some deliberate key strokes into the computer system to disable its ability to transmit data. that's a deliberate act by someone with knowledge. and so that is an important distinction and difference between all the ot...