Although flying remains the safest means of transport, disasters like the disappearance of flight MH370 somewhere over the Indian Ocean or the destruction of the airliner MH17 by a rocket in eastern Ukraine are painful reminders that Data Recovery black box technology will also be needed in the future to be able to elucidate exactly the causes of plane crashes. 

This is how the Dutch investigators were able to clearly conclude, in their preliminary report after analyzing the Data Recovery from the black box following the rocket launch, that the accident was not linked to a technical failure of the device. .

Although most people think they know what a black box is and place great importance on it, few know how exactly the technique used actually works. For example, few people know that the black box actually consists of two different elements or that it is not black as its name suggests, but orange so that it is easier to find in a field of debris.

One of the essential elements of the orange box is the cockpit voice recorder. This recording module basically consists of a special microphone that Twitter picks up not only all the conversations of the crew, but also background noises, which may later be important clues to the causes of an accident. . 

A black box first records data in analog format, before converting it to digital format. This is why only the last two hours of a flight will be listened to and analysed, as the design of the system requires digital data to be constantly overwritten.