Who first conceived the cockpit voice recorder? How does the orange ‘black box’ actually work?

The black box of the Air India Dreamliner is expected to provide critical insights and help resolve many of the uncertainties surrounding the incident. But do you know who first proposed the idea of installing a cockpit voice recorder—a key component of modern aviation safety? In this conversation with SBS Hindi, Captain Deval Soni explains key details about this orange-coloured ‘black box’.