A passenger on board a China Southern Airlines plane opened an emergency exit door just before takeoff on Wednesday morning as he "wanted some fresh air", local media reported.

The Boeing 737 aircraft, performing flight CZ3693 bound for Urumqi with 130 passengers, was waiting clear to take off from Chengdu Shuangliu International Airport (CTU) when the flight attendant suddenly found the left hand emergency exit door was opened by the passenger seating 41A.

When asked why he did that, the passenger said he thought he was opening a window, as he wanted to have some fresh air.

The crew members immediately had the exit door repaired. The flight took off from CTU at 10:52 a.m., with a delay of about 40 minutes, according to VariFlight, China's leading flight status service provider.

Similarly, in December 2014, a male passenger pulled open an emergency exit on board a Xiamen Airlines plane before it was about to take off because he "just wanted fresh air".

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