all right. joining me right now to discuss former managing director for the national transportation safety board and aviation analyst. good to see you. about four months after these messaging are time stamped. the federal aviation administration approved the 737 max for flight. how much of a difference do you think these messages would have made if boeing had disclosed them to the faa? well, i think certainly as the faa administrator said, concerning. we don t know the full context of these and it s not unheard of that test pilots can be somewhat cavalier in their communications. but these are very concerning. and if there was a problem with the mcat system showing up repeatedly in the sim test, boy, that is going to be a damming piece of evidence and president mulenburg is going to be before