What happens if an aircraft suddenly drops pressure at 14 000 feet?

In today's aircraft, the passenger oxygen masks are armed to automatically deploy if the cabin pressure exceeds a certain threshold (about 14,000 ft). So, in a depressurization event, when the cabin altitude goes above the threshold, the masks fall from their compartments.



People Also Ask

Depending on the altitude of the aircraft when depressurisation takes place, loss of pressurisation can very quickly lead to the incapacitation of the crew and passengers unless they receive supplementary oxygen.

MORE DETAILS

The higher the maximum differential pressure, the closer to sea level the system can maintain the cabin. Federal Aviation Regulations say that without pressurization, pilots begin to need oxygen when they fly above 12,500 feet for more than 30 minutes, and passengers have to use it continuously above 15,000.

MORE DETAILS

In aeronautics, a descent is any time period during air travel where an aircraft decreases altitude, and is the opposite of an ascent or climb.

MORE DETAILS

Severe turbulence causes large and abrupt changes in altitude and/or attitude and, usually, large variations in indicated airspeed. The airplane may momentarily be out of control.

MORE DETAILS

Most aircraft cabins are pressurized to an altitude of 8,000 feet, called cabin altitude. Aircraft pilots have access to the mode controls of a cabin pressure control system and – if needed – can command the cabin to depressurize.

MORE DETAILS

If the plane doesn't crash, the descent rate generally can't hurt you. If the plane crashes, the horizontal deceleration is likely to do far more harm than the vertical deceleration. That said, 18,000 feet per minute is pretty fast, like 180 knots, so unpressurized it could cause possibly ear & sinus damage.

MORE DETAILS

Over the course of less than six minutes, the plane descended 18,000 feet, ultimately moving from flying at 30,000 feet to a level closer to 10,000 feet.

MORE DETAILS

“A bullet hole in a cabin wall would have no perceived effect on cabin pressure…. A bullet hole is far smaller than the opening of the outflow valve [through which cabin air escapes during routine depressurization].

MORE DETAILS

In aeronautics, hypoxia typically results from a decompression or lack of pressurisation of the aircraft cabin. Hypoxia occurs within a few minutes if the cabin pressure altitude rises to between 5,000-6,000 m (about 16,000 - 20,000 ft).

MORE DETAILS