During take off and landing in the hours of darkness, why is it compulsory to have the cabin lights off ?
Answers:
It's so you cant tell by looking at them, who has s.h.i.t. themselves...
you don't want the terrorists to be able to see you 'cause they might shoot you down.
So there are no false reflections on the runway.
because its so you can find the entrance warning lights on the floor easier in the event of an emergency.
because the main sources of light distract the pilot as well as the ground controls and their monitoring devices similar to that of car drivers at night. if there is just a little light it normally doesn't distract them. but a major source of light distracts them so that they cannot monitor or read the controls properly
Its so your eyes are adjusted to the levels of darkness that would be experienced if the plane suddenly loses power and crashes..it also helps to see the emergency exit lights in the aisles.
It makes it easier for air traffic control to get a visual check on the plane. (You try looking at a plane with the cabin lights on in the dark!)
safety reasons
because the pressure that makes your ears pop could pop the bulbs
I'm fairly confident the main lights are required to be off during takeoff/landing for safety; the idea is that the pax eyes should be adjusted to the ambient outside light in case of evacuation.
Of course they don't force everyone to kill their reading light, but the concept is still sound.
I have also seen FAs require that exit-row window shades be open (not always up, some exit row shades are upside-down) during takeoff/landing so that the smoke/fire will be visible during an evacuation. Makes sense to me.
Why must you have the lights dimmed during the day as well? Seems silly when you can have your reading light on during the day and at night. If everybody (approx 165 people) had their light on, then how powerful would that be?
To frighten the **** out of the passengers, it's the highlight of the flight for the crew!
You correctly noticed that it is only during the hours of darkness, which gives it away. It is so that if there is an emergency, your eyes are already adjusted to the darkness outside.
In example, the planes roof of the cabin (The fusalage) suddenly breaks off. As your eyes have been in light, the sudden light loss means your eyes have to adjust and the precious seconds cost you the risk of your life.
It also conserves power so that more can be diverted to the reverse thrusters to slow the plane down.
It is so your eyes are used to the light levels in the event of an accident making escspe easier.
I'm guessing it's a courtesy to passengers.. after all, it's 'nighttime'.. but you have the right to your own little light..
so our eyes are accustomed to the dark light should the plane crash and you have to evacuate
er Dunno mebbe its to reduce extraneous reflections so other planes taxiing and controll tower can see u better.
So you can see out for traffics and not to get the cabin light reflected and observe for any objects out side would be hard to spot.
Well, this rule is more understandable if you read the complete law. According to cvial aviation athority, passanger airliners need to have their internal cabin lights off and window shutters open during take off. The reason this done ist that if for some reason an engine catches fire, of a bird strikes the wing and if the pilot do not pick it up in their instruments in the cockpit, then the cabin crew can alert them. No lighting and open window shutters helps the rear cabin passanger see better the outside of the aircraft hence are more likely to spot a problem. ALL other aswers above are incorrect.
If the aircraft should have to abort the take off or god forbid, an emergency, the passengers eyes would be used to the dark and could find there way off the plane quicker..Safety.
so the pilot knows where the landing strip is.(he can only identify the landing strip by lights so when multiple lights are on it could cause the pilot to go off the runway)
so if the plane crashes, your eyes have already adjusted to the low level light outside. this makes it easier if you need to evacuate the plane.
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