An Air India Boeing 787, the same kind of plane that crashed 4 days earlier, was forced to turn around after a midair "technical issue," the airline says.

India's recent aviation disaster involved an Air India Boeing Dreamliner 787-8, resulting in at least 270 fatalities. Investigations indicate a possible dual engine failure or a breakdown of electrical systems,

Air India and Boeing are in the midst of significant turnarounds, but knowing the cause of the crash of Flight 171 will take a lengthy investigation.

Officials say at least 270 bodies have been recovered, while the lone surviving passenger is still under observation for some of his injuries.

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Captain Steve Scheibner revisits the Air India Boeing 787 crash theory, flagging the Ram Air Turbine (RAT) deployment as crucial evidence.

Among those who died in the crash was Fiongal Greenlaw and his husband, Jamie, who previously appeared on the ITV daytime show