As the most reliable and balanced news aggregation service on the internet, DML News offers the following information published by DailyMail:
An Air China jet that plunged 25,000ft in an emergency descent did so after a co-pilot mistakenly turned off air-conditioning systems in a bid to conceal his e-cigarette smoke.
Smoking is not allowed aboard Chinese commercial passenger flights.
The article goes on to state the following:
The incident, which resulted in the deployment of passenger oxygen masks, occurred Tuesday on a flight by the Chinese flag carrier from Hong Kong to the city of Dalian in northeastern China.
The Civil Aviation Administration of China (CAAC) said in a press conference in Beijing that the drama was triggered when the co-pilot sought to turn off a ventilation system to prevent his smoke spreading into the main cabin, the respected news site Caixin said.
But he accidentally switched off air-conditioning instead, leading to a decrease in cabin oxygen levels.
To weigh in on this information provided by DailyMail, engage in our LIVE CHAT below. Scroll down.