CNN Anderson Cooper 360 December 30, 2014 04:40:00
Control. airbus says every 2.5 seconds a plane from one of its 320 family is taking off or landing somewhere in the world. the missing plane, designated qz8501, was delivered to airasia in october 2008. since then the airline says it has taken off some 13,600 times, logging approximately 23,000 hours in the air. airasia 8501 was carrying more than 18,000 pounds of fuel when it departed enough for about 3 1/2 hours of flight. shortly before disappearing the pilot asked air traffic control if he could ascend to 38,000 feet. that request was denied. the a320 is certified to fly up to 39,000 feet....