A Sichuan Airlines plane was forced to make an emergency landing after the cockpit windscreen was ripped out in mid-air.

The video, filmed in Flight 3U8633 from Chongqing to Lhasa on May 14, shows passengers using oxygen masks and a flight attendant saying: "Those exits cannot be opened" and "Be safe." The plane landed safely at Chengdu Shuangliu International Airport and no one was harmed.

The co-pilot suffered scratches and injured his waist while a flight attendant also suffered minor injuries, reports said.

According to Sichuan Airlines, the reason was due to a "mechanical failure" but no further details were available.

Reports said the aircraft was an Airbus A319 and was cruising at 32,000 feet.