It is painful to learn sudden disappearance of AirAsia flight QZ8501 between Surabaya and Singapore. This being a second incidence, the first  was of MH-370.

Reasons for such unfortunate occurrences are subject to Investigation by experts. Here I am being an Aviation enthusiast understand that in Air accidents, the aircraft’s Cockpit Voice Data Recorder and Flight Data Recorder play a vital role in finding out what went wrong during the flight. However both the Gadgets are to be…