Air India plane crash: Decoding what may have caused the crash

Air India Flight 171, headed from Ahmedabad to London Gatwick Airport, crashed shortly after take-off on the 12th of June. The aircraft, a Boeing 787, had 242 passengers and crew on board. A video has emerged showing the aircraft's undercarriage lowered and flaps retracted, which is unusual for take-off. Investigators are focusing on this video and the black box to understand the cause of the crash.