Air India Flight 171 was airborne for less than 40 seconds before it plunged into a densely-populated neighbourhood in AhmedabadInvestigators now face the grim task of sifting through the wreckage and decoding the cockpit voice and flight data recorders of the Boeing 787 Dreamliner to piece together what went catastrophically wrongAgainst the backdrop of the London-bound plane tragedy,

There has previously been speculation of potential sabotage, but this is the first time officials have formally acknowledged they are looking into it.