Can someone just open emergency exit doors mid flight?

“Technically, it's not possible to open those doors in flight,” he told CNN. Thomas noted that the landing speed of an A321 is about 150 knots (172 mph), meaning winds of that speed are passing the aircraft. The door, behind the wing of the aircraft, opened into that airstream, he said.



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Basically, the air pressure inside the cabin is higher than it is outside of the plane to enable the people onboard to breathe normally. That's why, if a window happens to break, the air inside would escape at high speeds, taking small objects like phones or magazines (or sometimes larger things, like people) with it.

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How do flight crew normally open a cockpit door? Since the incidents in 911, pilots and flight attendants no longer have keys to open the cockpit door, which remains locked during flight. Access is granted via a keypad found outside the cockpit door.

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Inside the cabin, 8 pounds of pressure push against every square inch of surface area. The typical passenger door is about 6 feet tall by 3 1/2 feet wide. So we're looking at more than 24,000 pounds of pressure bearing down on that exit. The strongest man alive can deadlift only 1,102 pounds.

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WBZ-TV did some digging and found it is actually impossible to open an emergency exit door mid-flight because of physics. Common passenger doors are about six feet tall and 3.5 feet wide. That means to open the door at 36,000 feet, you would need to overcome more than 24,000 pounds of pressure.

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Sudden decompression, which would occur if a plane door was suddenly thrust open, is another matter. Anyone standing near the exit would be ejected into the sky; the cabin temperature would quickly plummet to frostbite-inducing levels, and the plane itself might even begin to break apart.

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Under this program, flight crew members are authorized by the Transportation Security Administration to use firearms to defend against acts of criminal violence or air piracy undertaken to gain control of their aircraft.

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