Are the doors on a passenger airline easily opened or locked during flight?

Question

And, once opened what would really happen?

Answer 1

in the air its impossible because the air stops it and they probably have some safety device that doesnt allow it to open in the air

if it o[ens there will be severe depressurization if they are flying at high altitudes and everythign will be sucked out it will be hard ot breathe and the pilot will have to descend IMMEDIATELY

Answer 2

The answer is no, you could not open it. A rapid decompression would suck anything loose out into the atmosphere including people.

Answer 3

When the A/C is pressurized it is almost impossible to open them do to the difference in pressure. But once the pressure is equalized They are fairly easy to open. Even the over wing door opens up easily as long as you are not worried or stressed out because you just crashed or there is a fire in the cabin.

Answer 4

During pressurised flight, almost impossible to open as their design is to plug the hole.

Answer 5

The cabin door while a plane is in flight has approximately 8 pounds per square inch pushing against it due to the pressurization of the aircraft. That means if there is thousands of pounds of force keeping the door closed. Although it is not technically locked, it wouldn't be possible to open the door in flight. Think about it this way, if you were in a car and you were suddenly underwater, the car door would not open because of the pressure of the water would hold it closed.

If by some impossible reason it did pop open, loose things near the door would initially get "sucked" out. (if you had your belt on, you would not be sucked out) The worst thing to happen is that now you would be depressurized. You would have just a few moments to get your mask on before you passed out. That said, I can't think of a single case where the door popped open in flight. Although very rare, most pressurization problems are gradual with plenty of time to remedy the situation.

Answer 6

It's not physically possible for a human being (or even a team of human beings) to open the door. At cruising altitude, there is about a 8 psi difference between the cabin and outside.

That means, 1 sq ft of space would require over 1000 lbs of force to over come the difference.

This works because airplane doors work like plugs, the pressure from the inside basically seals the door shut. (Imagine opening a door in the bottom of a pool when its filled vs when its not)

If it did open, air from the INSIDE would gush out, in many cases, the airframe would endure stress beyond its designed limits, and possibly fail. Things inside the aircraft would be sucked out.

Answer 7

The pressure at 30,000 Ft would be absoultley impossible to open it , crew are only authrised to open it anyway , even so they need a go ahed from the capt.

Answer 8

Its hard to open, once opened above 10,000 feet air would come in and suck everything out because of the air pressure and also everything inside would be robbed of air and frozen.

Answer 9

if you really want to know what would happen just take a trip on the plane and find out what would happen if you opened the door. i double dare you to do itthe next time you fly

Answer 10

They are impossible to open in flight with full cabin pressure- pressure holds them against stops.  When the pressure is equalized (low altitude) they could be opened.

Answer 11

The human body needs oxygen, that's common knowledge. At higher altitudes, there is less oxygen, as you can see with mountain climbers. Therefore, the planes are pressurized to 8,000 feet, a comfortable level for the passengers, even though the plane is around 35,000 feet inflight. Therefore, the doors are hard to open, because the difference in pressure makes the doors close very tight. If you did open the doors, it would cause an explosive decompression, all of the pressurized air would rush out of the plane explosively to achieve a balance, and a lot of the plane's fuselage would be gone. This is why cracks in airplanes cause such severe problems. An Aloha Airlines (maybe flight 243...) plane out of Hilo (i think) and a United Airlines (flight 811) plane out of Honolulu both experienced this problem because of a crack.

Answer 12

A door that is 8 feet by 4 feet will have a force of 39,168 pounds on it if the plane is pressurized to 8.5 psi differential.  You have to move the door inward against that force before it will go out.