CNN Chicagoland March 17, 2014 05:31:00
How the airplane behaves in real life, we can simulate it, but in real life, that's very hard to say. >> mitchell, what's the peak for a commercial aircraft for altitude? >> the 777 200 is certified for 45,200 feet. that is the maximum altitude it can fly. that is not to say on some days it can't reach that altitude. some days it is really hot and the molecules are separated, they're far apart and it affects lift and it can't get to that height. >> this commercial aircraft beyond the 777, beyond the 777. >> beyond the 777, i mean you're looking at between 35,000, 41,000 feet. but going up to 4...