A Boeing 737-900 experienced a pressurization issue, causing the plane to plunge 27,000 feet. Oxygen masks deployed during the incident. The plane was carrying a total of 180 people, including 174 passengers and six crew members.

The flight was diverted due to the issue. Details of the incident are limited, but further information is available from the source.

The diversion of the flight and the pressurization issue that led to it are the key points known so far.