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What is black box?

Hii,
We all dream to board aeroplanes once in a life.For some it is scary and for others it is adventurous.Well flights are considered to be safest mode of travel.But mishap can occur any time.So there are many cases where accidents or air crash has occured.So black box is that machine which is small in size and kept at the back of planes to survive the damage. It remains intact even after crash.It records the communication between pilots and the communication which pilots make with air traffic control and every minute data of flight.From seconds from disaster it keeps the data of what pilots had to say before disaster.It is useful for air crash investigation. Although it is named as black box but it is orange in color.In aviation industry,it is known as flight recorder.So  I hope you got to know something interesting today.
Thanks....

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