Transcript for Boeing stock takes big hit after crash

Here at home the fallout is growing. Boeing's stock taking a big hit slipping more than 22 points making for a $12.7 billion loss. And it is not just investors who are nervous this morning. We saw that growing list of international airlines grounding the Boeing 737 max 8. Our senior transportation correspondent David Kerley joins us now. We're hearing loud calls from American carriers to do the same. Reporter: Yes, but they haven't so far. A third of the fleet, though, worldwide is grounded by airlines and countries this morning while here the FAA is not ordering a grounding so the American flying public, there are 72 aircraft you could be on today, three airlines here flying that aircraft. Singapore and Australia have now ordered that these aircraft not come into their airspace. This is a jet that just a couple of weeks ago was flying 8500 times a week. The FAA is telling us there is just not evidence at this point to order a grounding. There is no tie between the two recent jets that have crashed. Now, there are similarities between both of these incidents. At takeoff both aircraft were having trouble with control. It's called pitch. When the nose is going up and down and the pilots are having trouble controlling it but we don't know whether the reason is connected. That's why the FAA says it will not order a grounding at this point. Now, Boeing is working on a software fix coming out of that first crash in Indonesia. The FAA says when that fix is ready next month it will mandate that that upgrade be put into the aircraft. Cecilia. David, you said it. Passengers this morning here in this country are going to be boarding those plane as and airlines are already hearing from some, people who are concerned about getting on one of these Boeing 737 max 8s so can they switch flights without being penalized. Reporter: It's difficult and it depends on the airlines. The airlines tell you go they're trying to accommodate passengers who might be worried, in fact, for refundable tickets you can usually get a move to another flight and get off that aircraft but sometimes they change the aircraft out just in the last day, you know, Ang aircraft has a maintenance problem so bring in another one, it might be a max 8 you're going to get on. The union for American airline flight attendants reminded their members if they have a problem with the max 8, they don't have to fly it. It's allowed in their union once again, the black boxes with the ethiopians have, they have not decided who will read them out yet. They've had them for more than 24 hours. Do they need help? Will it be the British, the French, the Americans? Everybody wants to know what's on those boxes. David Kerley on this story from the beginning, thank you. Boeing continues to stand

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