A US based aviation attorney told FinancialExpress.com that a TCMA failure could be the cause behind the Boeing 787 crash. The London-bound Air India flight AI 171 crashed in Ahmedabad moments after take-off on June 12.

A ir India has told Parliament's Public Accounts Committee (PAC) that the Boeing Dreamliner is "one of the safest aircraft in operation" and that over 1,000 of them are currently flying worldwide, sources said. The airline made the statement in its defence following the fatal AI 171 crash in Ahmedabad, which killed 260 people.

Passengers onboard a Japan Airlines Boeing Dreamliner 737 were thrown into panic on Monday evening (June 30) when the aircraft abruptly plummeted nearly 26,000 feet mid-air, compelling terrified passengers to don oxygen masks and brace for what many feared could be their final moments.

Investigators are still piecing together what went wrong. In the meantime, aviation safety experts have begun to narrow their thinking.