The 'black box' of the London Gatwick-bound Air India AI-171 plane that crashed in Ahmedabad last week - losing thrust 36 seconds after take-off and slamming into residential buildings bordering the airport,

All but one of the 242 people on board the London-bound flight died when it crashed into a residential area in Ahmedabad shortly after take-off.

Aviation analysts - Linus Benjamin Bauer of Bauer Aviation Advisory and Saj Ahmad, Chief Analyst at StrategicAero Research – have emphasised the critical importance of the two black boxes: the Flight Data Recorder (FDR) and the Cockpit Voice Recorder (CVR).