Aviation Safety Officer, Saran Udayakumar told Quora users that in cases of emergency the cabin crew only have 90 seconds to evacuate the aeroplane. In order to make this possible the crew prepare the passengers and the aircraft so if anything does go wrong they can evacuate quickly.
This also means emergency personnel outside can see into the cabin to assess the situation. Usually passengers report stuff right away. Therefore if shades are open crew can easily see outside conditions to help them in planning the evacuation - which doors to use for evacuation.
If a window were opened on a typical commercial flight, the cabin would quickly lose pressure. Oxygen levels and temperatures would drop dramatically. Without oxygen masks, the crew and passengers would likely die. Most commercial airplanes feature fixed windows that cannot be opened.
However, small aircraft, such as the planes typically used for private flights, often have windows that can be opened or closed. Luckily, small aircraft rarely cruise at altitudes that require cabin pressurization. Commercial aircraft typically cruise at an altitude of 35, feet. When a plane reaches 10, feet or higher, the air becomes significantly thinner. The thinner atmosphere has less oxygen. When the plane reaches the stratosphere at 35, feet, the air pressure is less than a quarter of its value compared to the air pressure at sea level.
The temperature also drops to about degrees Fahrenheit. To maintain a safe environment, airplanes have special pressurization systems. With the help of bleed air from the engines, the cabin becomes pressurized to keep the oxygen levels and temperatures stable. Pressurization only works when the cabin remains airtight. Opening a window would eliminate the airtight seal, causing an immediate loss of pressure.
If something goes wrong, then they can see if there is a problem with the engines or wings. And if the aircraft needs to be evacuated, you can see which side is safe to disembark from. This information can also be passed on to the pilots in the cockpit and the emergency services outside. Emergency services also prefer the window blinds to be open, so that the fire service can see immediately if there is smoke or fire on board.
OK, got it. Why not share every possible best practice with passengers? So if you really want to be a good, conscientious, knowledgeable passenger, just watch the safety briefing video or demonstration, and listen to every announcement.
Some new rule may be just taking off. View Story. Topics Air Travel.
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