Experts have raised concerns about what might have caused the fatal Air India crash - including potential problems with the Boeing 787's wing flaps and landing gear.

Investigations are being stepped up following yesterday's tragedy that killed hundreds of people aboard the London Gatwick-bound aircraft - and the Dreamliner's wing flaps are coming under extra scrutiny as possibly to blame.

Experts viewing footage of the Air India Boeing 787-8 ahead of the crash have said its configuration on taking off from Ahmedabad airport in India 'doesn't look right'.

The Dreamliner plane was carrying 242 passengers, including 53 Britons - with none on board thought to have survived except one British national in seat 11A.

It has also been reported that an identical Boeing 787 made four emergency landings last month - an American Airlines plane with issues linked to its wing flaps not being properly deployed.