CNN CNN Newsroom April 12, 2014 22:08:00
You -- what -- when an airplane is approaching 30 years, the aging of aircraft and wiring and whatnot needs to be inspected. the first aircraft that came to light was was the flight 800. 747. why did that happen was earlier, the airplanes were obsolete before they got to a 30-year life. the two airplanes that flew 30 years, one was a 747. the other one was 727. now 737. 777 will also be in that mode because it is a very successful aircraft. >> that's a point the life of the airplane had a becomes very key. developing problems they weren't aware of before. that's another reason why great urgenc...