But, have you ever wondered that why the window shades remains open in an aircraft during takeoff and landing. Here is the answer.

Passengers are asked to do this because cabin crew members have only 90 seconds to evacuate the airplane in case of any emergency and if the shades are open crew can see the prevailing conditions outside.

Another reason is that as the cabin crew members are loaded with many responsibilities such as safety announcements and refreshments, it is the passenger who often reports any unusual happening outside.

Passengers are also asked to fold up their tables and straighten their seats during take-off and landing in the case of an emergency to ensure a quick exit.

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