eventually they did abandon the search in the northern corridor. valuable time was lost. also in early march, u.s. investigators determined the plane had flown for hours after its last communication. based on satellite data from systems on board. the malaysian reaction, they denied it. but only days later the malaysian prime minister told reporters the plane had indeed flown for about seven hours after that last communication. and what about the last words from the cockpit? >> as far as the pilot communication, understand according to the retd cross it was about 1:19. >> it was 1:19 when we got the last transmission from the cockpit. >> reporter: not exactly. they got that wrong, too, admitting later on it was actually "good night malaysian