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An emergency descent of an Air China aircraft after the cabin oxygen levels dropped was linked to a co-pilot smoking an e-cigarette during the flight , reported Friday the national press, citing the Chinese aviation regulator. The Air China Boeing 737 aircraft supported the Chinese city of Dalian from Hong Kong, while it was going down to 10,000 feet (3,048 m), with oxygen masks deployed. Then he went back to continue to his destination, an incident that fueled the concerns of security experts.
Chinese airlines generally have a good safety record, but pbadengers sometimes accused pilots of smoking during flights. However, few of these incidents have been confirmed.
"In the preliminary investigation, it was discovered that the co-pilot was smoking an electronic cigarette," China News reported, citing a press conference from the China Aviation Administration (CAAC ) investigation of the incident of Tuesday
"The smoke diffused in the pbadenger cabin and the air conditioning components concerned were cut off wrongly, without warning the captain, which resulted in oxygen deficiency" Qiao Yibin, a senior regulator, said. According to the Air Safety Bureau,
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