A 60 kilogram chunk of a Boeing 777 has fallen out of the sky and smashed through the awning of a factory in Shanghai, Chinese state media has reported.

The heavy metal part tore through the factory's canvas roof in Shanghai's Songjiang district on Monday night, according to the Shanghai Morning Post. No one was injured.

The social media post which first revealed the curious case of a 60 kilogram plane piece which fell out of the sky over China. Credit:Weibo

China's aviation authority confirmed the metal plate was part of a Boeing 777 passenger aircraft, most likely part of a landing gear compartment door.

A factory worker told local media: "It is incredible that no one was killed, but even more scary that a plane is flying around with part of its landing gear broken."