What happens if you open the plane door during a flight?

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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Opening an aircraft door is impossible while the plane is at cruising altitude or above 10,000 feet due to air pressure. However, as the plane gets lower, experts say it is possible for a door to open as the pressure outside equalizes with the pressure inside the plane.

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A passenger on an Asiana Airlines flight recently opened an emergency door while the flight was in the air—something that shouldn't be able to happen. We looked into it. Usually, when the cabin is pressurized, the exit row doors can't be opened.

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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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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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If the plane is somehow kept pressurized, the cabin pressure is usually equivalent of 6000–8000 ft, which is lower pressure than the outside at sea level. Which means as soon as you unlock the door, it will swing inwards with a lot of force, as air from outside rushes in to re-pressurize the cabin.

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Yes, airline pilots can go to the toilet during a flight. In fact, they have their own private lavatory in the cockpit that is separate from the passenger cabin.

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The impact of hitting birds during key sequences like takeoff or landing can damage the engines, windscreen, and nose cone, usually forcing the plane to return. Here's what happens during such an event.

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According to the FAA, most aircrafts can safely fly over thunderstorms, but sometimes a thunderstorm can block a flight path. In that case, the plane will be rerouted to nearby airspace, and in extreme cases, to a neighboring airport.

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Some aircraft damage from lightning strikes includes broken lighting and windows, deformed antenna placements, and onboard electronics malfunctions. Other abnormalities or warnings on the flight deck, such as cabin air pressurization problems or false alarms, can occur after your airplane has been struck by lightning.

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According to USA Today, the common cruising altitude for most commercial airplanes is between 33,000 and 42,000 feet, or between about six and nearly eight miles above sea level. Typically, aircraft fly around 35,000 or 36,000 feet in the air. To put that in perspective, the peak of Mount Everest measures 29,029 feet.

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Extremely secure — so secure that they can withstand gunfire and even small grenades.

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However, since the attacks on September 11th, 2001, security arrangements in this regard have become much more stringent. As such, the door to the flight deck is usually kept locked shut throughout the entire duration of the flight, and no passengers are invited up to see the wonders of the cockpit anymore.

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Because their first concern is safety, what flight attendants notice about you has much to do with your ability to keep yourself and others safe. They'll make a mental note of passengers who are in good shape and who can help lift heavy items and lend a hand if necessary.

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