Why Do Window Blinds Need To Be Open During Takeoff & Landing?

Many airlines require window blinds to be opened during taxi, takeoff, and landing. The practice is uncommon in the US, and only a few US airlines "encourage" passengers (particularly those seated in emergency exit rows) to have their blinds open during these times. However, many carriers mandate open window blinds during critical phases of the flight. Here's an explanation, along with a few examples of its benefits.

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