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Why are lights in the cabin dimmed during take-off and landing

During take-offs and landings, the aircraft cabin lights are dimmed. Well there are some who thinks that dimming that lights gives engines extra power during take-off. Well this is not the case.


Did you know that dimming the cabin lights during take-off and landing is actually done for your safety? So yes it is a safety measure. During mid-flight, cabin lights are dimmed in order to make passengers relaxed and sleep in order to adopt to a new time zone.

However, it is a whole different thing during take-off and landing.

Usually, it takes quite some time for our eyes to adjust to darkness. During an emergency, this cannot be the case as this may mean a life or death situation. The aircraft cabin, when lights are off is naturally dark, even if window shades are up and even during daytime. Hence during an emergency, your eyes have to be adjusted to the natural light in a jiffy in order for you to see the exit signs, the pathway markings, and the cabin crew guiding you out.

Since take-off and landing are usually the most dangerous phase in a flight, the cabin lights are dimmed in order for your eyes to adjust to the natural so in the even of an emergency, you can see clearly. Window shades are also required to be up during take-off and landing in order for you to assess the situation outside like in the case of an emergency, to know if there is fire on your side or not before opening any emergency exit doors.

So next time you fly, you now know why your window shades have to be kept up while the lights inside the cabin are dimmed during take-off and landing. These are safety procedures which should definitely be followed.

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