up to keep the airplane level until it runs out of authority to do that. plus when the imagines quit, they didn't quit symmetrically. >> before the other. >> right. there variations and fuel quantities in the tanks. ran dry if that's what happened before the other. now the airplane is a symmetrical and losing power. it may keep it going straight which controlled the airplane in there. >> i have more questions for you and the viewers have a lot of questions. stick around. thank you so much for writing that piece on cnn.com. keep your questions coming. hash tag it, 370 qs and we will