A Spring Airlines flight had to make an emergency landing after the plane dropped nearly 26,000 feet.
The Boeing 737, had departed from Shanghai Pudong Airport in China and was on its way to Tokyo Narita Airport in Japan on Monday when it plunged.
Pilots onboard alerted air traffic controllers about an irregularity in their pressurization system that maintains cabin air pressure.
The aircraft then had to rapidly descend from 36,000 feet to just under 10,500 feet in ten minutes.
Horrified passengers shared footage captured aboard the flight after oxygen masks dropped from the ceiling.
The flight, a Boeing 737, had departed from Shanghai Pudong Airport in China and was on its way to Tokyo Narita Airport in Japan on Monday when it plunged
Pilots onboard triggered an alert to air traffic controllers about an irregularity in their pressurization system that maintains cabin air pressure
One told the Associated Press: ‘I heard a muffled boom, and the oxygen mask fell off in a few seconds.
‘The stewardess cried and shouted to put on the oxygen mask, saying the plane had a malfunction.’
Another terrified passenger said they were on ‘the verge of tears’ as they wrote their will and jotted down insurance and bank card pin numbers.
The flight was eventually redirected to Kansai international Airport in Osaka, Japan, after declaring the emergency.
There was 191 passengers onboard the plane when it experienced the issue, there were no reported injuries onboard.
As compensation the airline offered 15,000 yen, or $104, and one night of accommodation for the issue.
A terrified passenger said they were on ‘the verge of tears’ as they wrote their will and jotted down insurance and bank card pin numbers
The flight was eventually redirected to Kansai international Airport in Osaka, Japan, after declaring the emergency
An investigation has also been launched to identify what caused the incident on the plane.
It comes after an American Airlines flight was also forced to make an emergency landing after it caught fire mid flight over Las Vegas, Nevada.
The jet, destined for Charlotte, North Carolina, had just taken off from Las Vegas‘ Harry Reid International Airport on Wednesday morning when fire started coming out of one of the engines.
Pilots onboard the plane, which was carrying 153 passengers and six crew, had to quickly divert course back to the airport after passengers spotted the flames.
Footage has since emerged on social media showing the jet with a trail of black smoke following it, fire can be seen spurting out of the side of the engine.
Shortly after, the aircraft was returned to the airport, where an inspection was carried out. Nobody onboard was injured, officials said.