from The American Heritage® Dictionary of the English Language, 4th Edition
- transitive v. To reduce the pressure of air or gas within (a chamber or vehicle, for example).
from Wiktionary, Creative Commons Attribution/Share-Alike License
- v. To reduce the air pressure within a chamber.
- v. To have the pressure of one's environmental atmosphere reduced.
from WordNet 3.0 Copyright 2006 by Princeton University. All rights reserved.
- v. decrease the pressure of
TransCanada tries to 'depressurize' Keystone XL pipeline bid
Investigators subsequently determined that a defective air-circulation fan—combined with the crew's decision to turn on certain engine and wing anti-ice systems while flying through unusually warm temperatures—caused the plane to quickly depressurize, according to the document posted on the aviation website earlier this week.
In designing its planes one of the company's many considerations is that metal flexes and fatigues over time as cabins pressurize and depressurize on each flight.
The stresses planes undergo each time their cabins pressurize and then depressurize during a trip are major factors in creating cracks and possibly causing metal fatigue.
Without such systems, pilots who get fire warnings from the cargo hold often must resort to making emergency descents to depressurize the aircraft and try to starve the flames of oxygen.
The stresses planes undergo each time their cabins pressurize and depressurize during a trip are major factors in creating cracks and possibly causing metal fatigue.
A Southwest Airlines jet made an emergency landing in Charleston, West Virginia, on Monday after a football-sized hole in its fuselage caused the cabin to depressurize, an airline spokeswoman said.
To depressurize that fast, some of the passenger windows must have blown out, maybe an entire door.
But .50 will depressurize or, rather, render impossible to pressurize virtually any commercial aircraft out there, and an airliner without pressurization will have to land or it will suffer fatalities, period.
TL;DR: Plenty of things can depressurize an aircraft, and hitting an aircraft in flight is extraordinarily implausible.