Air India plane crash investigators have found both of the Boeing 787's "black boxes," hopefully brining an understanding of the cause of the disaster a step closer.

Kirit Patel was killed when the London-bound Air India plane crashed soon after taking off on Thursday from Ahmedabad, along with 240 other passengers.

The black box, unlike the name suggests, is actually two bright orange devices - one for the CVR and the other for the FDR - painted with reflective strips for easier recovery after a crash.