You probably aren’t the only one looking to pull the ol’ switcharoo. Even if just a few passengers do it, they could throw the plane off balance! And since most aircraft are incredibly sensitive to changes in their center of gravity, it can lead to dramatic consequences.

During takeoff, pilots must know the distribution of weight on the plane to make exact calculations. If these calculations are off even the slightest, there are chances that the aircraft can crash while leaving the ground. So before nestling in a more comfortable or spacious spot, ask a cabin crew member if you're allowed to do so.

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