There have been three incidents with emergency exits on South Korean airlines in the last six months. There will be a pre-flight warning telling passengers not to open the emergency exits mid-flight, per JoongAng Daily. AdvertisementAfter three incidents in the last six months, South Korean airlines will have to warn passengers not to open the emergency exits mid-flight, according to local outlet JoongAng Daily. According to South Korea's Aviation Security Act, tampering with emergency exits is punishable by up to 10 years in prison. AdvertisementIt's not the first measure that South Korea has introduced to try to prevent further incidents.

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Persons: —, hyperventilation Organizations: Service, JoongAng Daily, South Korea's Aviation Security, Korea Times, Asiana Airlines, Guardian, Korean Locations: Korea, Philippines, South Korea, New York, Incheon