repair and maintenance parts for the next six years. the plane has been in use very little since that major repair, only two or three months. in addition to the interior work, all of the engines were completely rebuilt. speaking frankly, we believe this tragedy could not have been caused by equipment failure. >> you heard they say they don't believe it was caused by equipment failure. so what did cause it? we have a former member of the national transportation safety board. he joins us by phone from boston. so you heard what the gentleman said there, john. your professional opinion about this accident? >> well, we, one, learn that you don't take anything for granted. i mean, the flight data recorder, if it's a row best recorder, is going to give us the engine parameters, how they were performing, it will give us the voices in the cockpit, if it was up to western standards. i'm assuming that. >> so, listen, i think it's 20 years older, maybe more or less, that's not particularly old for a plane, especially when they