David Sucy News Today : Breaking News, Live Updates & Top Stories | Vimarsana

am taking the train. >> kaitlan, thank you very much. we appreciate it. "cnn newsroom" starts right now, of course, with the breaking news as well. ♪ good wednesday morning to you, i'm jim sciutto. >> and i'm erica hill. we are following the breaking news this morning after u.s. flights were grounded, the faa now lifting that ground stop. u.s. flights resuming here. there is, though, as you can imagine a huge mess unfolding at airports across this country and, frankly, around the world. a key faa safety system went down earlier this morning, that led to some scrambling from coast...

Even your connecting flights are all going to be not departing or not starting to move until that time. this is a nationwide issue, it's not just a local issue. and, again, we will offer some snacks up front here. help yourself. >> reporter: so that's in state college, pennsylvania. but here in newark things are beginning to get back to normal. this was one of the first airports right here at nuke and atlanta hartsfield-jackson the first airports to get flights going again because of the backlog that was present. we will definitely see more delays here, but in terms of people being able to che...

Relies on the notam system, always have, in my 30, 40 years in aviation i have never known this system to go down. so i think this is a significant problem right now. >> so to that point, david, what vulnerabilities in this system could this expose? and, again, we're early, they haven't figured out what brought it down, but the idea that a system like this could bring basically the whole air transportation system down and very quickly, listen, that's worri worrisome. >> it's very worrisome and even more so worrisome to me is i just went on to check my notams because we use these for pilots up ...

Centralized database for anything that's abnormal they can also do their own checks, they can reach out to the airports, look at the individual airports to see what's going on at the receiving airport or any alternate airports that they might have selected and they can also do some end route information as well, but it's very time consuming. once they do that the big shift here is the fact that the pilots themselves and the dispatcher are taking on that responsibility to make sure that there's no abnormal situations. so the chances are that with your mom and i'm 100% certain of this that the p...

Displayed. it has you confirm that you read t it says, yeah, i read this, i know that. so it's shifted the responsibility now over to the pilots and the dispatchers. so we're going to continue to see delays because they're going to now have to check every airport, every route 25 miles both left and right on that route to see if there's anything that might affect that flight. so there's going to be continued delays. >> so, david, early on this morning as we were watching this, we saw that -- we've heard from passengers in london sitting on the tarmac for three hours but we know of flights takin...