Detailed text transcripts for TV channel - MSNBC - 20120310:21:47:00
Is that a critical piece of the 747 structure has cracks that have expanded to the breaking point and snapped. it's the aft pressure bulkhead, an umbrella-shaped structure toward the back of the plane. >> it's the device that keeps the pressure in the back part of the airplane contained properly. without that aft pressure bulkhead you can't pressurize the tube and you wouldn't be able to breathe at 35,000 feet without the use of pressurized set elemental oxygen. >> the back of the airplane is getting a considerable amount of stress, not only from the pressurization, but also from the tail and ...
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