@CNN: A flight from Hong Kong to the Chinese mainland suddenly lost air pressure and dropped nearly 20,000 feet because the pilots were vaping in the cockpit and accidentally pushed the wrong buttons while trying to turn off air recycling fans https://t.co/N7sgVmDL3U https://t.co/iHqSoyZySl

@CNN: A flight from Hong Kong to the Chinese mainland suddenly lost air pressure and dropped nearly 20,000 feet because the pilots were vaping in the cockpit and accidentally pushed the wrong buttons while trying to turn off air recycling fans https://t.co/N7sgVmDL3U https://t.co/iHqSoyZySl