>> reporter: another problem? pilots say the airlines don't check periodically to see if something's come up in a pilot's personal life that may lead to a psychological breakdown, like a marital or financial issue. and they are not required to check for that. it's up to a pilot to self-report. >> if he or she doesn't self-report, what happens? >> if you don't self-report, it's really going unnoticed. typically, what happens is if you have an issue, one of your crew members might recognize something like that. >> reporter: the faa did not respond to our questions about the criticism of that system. some current and former pilots argue that the rules don't need to be tightened, that the vast majority of pilots are mentally stable and that the self-reporting guidelines work. but critics say there are still some dangerous gaps in the system that out of fear of losing their careers, pilots are not going to self-report psychological issues or if they do seek treatment, they are not going to tell their bosses. wolf? >> brian todd thanks very much. let's bring back our aviation