BLITZER: We have breaking news coming into THE SITUATION ROOM. A new problem has turned up on the troubled Boeing 737 Max airliner, the jet that's been grounded since a pair of crashes killed all 346 people aboard two planes. Let's bring in CNN's Senior Investigative Correspondent, Drew Griffin. Drew, what have they found out now?</s>DREW GRIFFIN, CNN CORRESPONDENT: Wolf, this is independent of the MCAS system. FAA test pilots working in a simulator found out that a microprocessor flaw actually created a situation where the plane pointed downward, and the pilots could not easily or quickly recover the airplane. As one source told us, if you can't recover in a matter of seconds, that is an unreasonable risk. The FAA is requiring Boeing to mitigate this problem immediately before they do any kind of flight certification. But, again, this was discovered by FAA test pilots, and it has to do with a microprocessing unit inside the 737 Max. The big issue, how long will this delay recertifying the aircraft? If it turns out that the microprocessors in all of these planes need to be replaced, that's going to be a very big deal. Boeing is trying to fix this with yet another software update -- Wolf.</s>BLITZER: Drew Griffin reporting for us. Thanks very much. Coming up, there's more breaking news. President Trump heads to Asia, but even though he's stopping in South Korea, he says he won't be meeting with Kim Jong-un.
Sources: New Flaw Found In Boeing 737 Max