A flight recorder is generally known as black box. It is an electronic recording device which is placed in an airplane and is used for the investigation of aviation accidents and other incidents. Presently it is available in orange in color.

Dr. David Warren was the first Australian scientist who invented the black box. The Australian scientist was working at the Aeronautical Research Laboratory in Melbourne in the mid-1950s and he was involved for the examination of the mysterious accidents in the world’s first jet-powered commercial aircraft. It is useful for investigators to examine or observe the recording about what may happen in the last moments before the accident of airplane so it helps to know the main cause of airplane accident.

Australia became the first country in the world to make compulsory use of black box for all commercial airplanes.

Flight Data Recorder (FDR) – It is an important device of the black box, which saves the past or recent history of airplanes by recording of dozens of limitations collected several times per seconds.

Cockpit Voice Recorder (CVR) – It is also an important device of black box, which maintains or saves the current history of the sounds in the cockpit including the discussions or conversations between the pilots.

These two recorders helps in investigating the main cause of airplane accident. It also goves accurate evidence to narrate or observe the airplane’s flight history, which helps in investigation of airplane accident.