what is inputted into the aircraft is flight plans if they want to come off that they have to input new waypoints into that system. in order to that it's a real emergency and if it's a real emergency, it's either due to an engineering malfunction or something crept up on them very quickly. so really for me i'd be looking at what type of conversation has been going on between the aircraft and their traffic and when did their traffic know that something was wrong in order to initiate what is called when an aircraft has gone longer than 30 minutes of it is e.t.a. at a certain coordinate. if it hasn't arrived at that coordinate within 30 minutes and it's not seen on radar, that's