grounded right now. i want to take you to the scene, this is in las vegas. keep in mind, okay, this is a system that pilots use for any kind of notification. not clear how many flights are affected or which locations. we want to get straight to pete muntean but we re told new information pete as we get to you perhaps you have information on this. united has delayed all flights temporarily as well. what is going on? reporter: so far we ve heard from american and united airlines. united said it s holding all flights on the ground right now because of the major system outage, the notice to air missions system. that means pilots cannot receive critical information they need to take off. these have to do with whether or not runways are open, navigational aids are available to pilots. this is critical stuff making sure the pilots know things are not available or may not be working. we are hearing the cancellations and delays are going up. so far the delays have doubled in the las
and delays are going up. so far the delays have doubled in the last hour, it was 400 yer earlier, now more than 1100 delays nationwide today. this comes after a tough winter for air travel. we saw the southwest cancellations late last month over the holidays. we saw briefly an issue with their computer system. the air transportation system can be so fragile at times it relies on critical systems. and the faa tells us it s doing final validation checks right now to make sure the system will get back online sometime soon. we have a statement from them, they re repopulating the system right now but this is affecting operations across the national airspace system. that has a huge impact on air travel. we don t know the full scope of this just yet. this could have a trickle down effect throughout the day. we will see how quickly the faa gets to fixing the system.