Be it a regular traveller or a first time you would have always wondered why the flight lights are dimmed during take off and landing! Haven’t you? But still most travellers are still in the dark regarding this as to why this is mandatory for all airliners for the safety of the passengers.
Dimming lights is an essential safety measure undertaken by flights to ensure visual adjustment for passengers on board. The act helps passengers get accustomed to darkness, thus avoiding any surprise during an emergency situation that one mostly encounters during take off or landing.
Analysts and pilots have also stated how aircrafts need to have maximum power available during take off or landing. Auxiliary systems like cabin lights are thus dimmed to reduce the electric load. On occasions when the pilot needs to perform a Maximum performance take off or a Go-Around during landing, anything taking power from the cockpit is turned off to maintain maximum power availability.
Similarly, the aircraft windows also need to remain open at that time for an unobstructed flow of natural light inside, so that passengers can be guided to safety in case of situations like a sudden power cut or any other unforeseen mishap.