Passengers were wild on a spring airline Japanese flight that appeared to have encountered cabin pressurization problems on Monday night. Flighttradar24 data shows that flight JL8696 from Shanghai, China cruises at 36,000 feet. At 6:51 p.m. local time, the Boeing 737-800 rose briefly before quickly dropping to 10,000 feet in the next ten minutes. It then made an emergency landing at Kansai International Airport near Osaka, Japan. According to the simple flight, 191 passengers and crew did not report injuries. It doesn't look like anyone throwing away door plug bolts on this one.
Although there may be no physical harm, it is a painful experience for everyone. Standard reports said that as the oxygen mask was deployed, the flight seemed to suppress tears and the plane fell towards the ocean. One passenger even wrote a note to her husband as he quickly descended, saying goodbye, worried about the worst. People told another passenger, as well as insurance and banking information.
We are all very good now, thank you, how are you?
https://www.youtube.com/watch?v=szcti2dk7_s
Although experience must be horrible to the passengers, the pilots seem to have done everything correctly. Cabin pressurization makes it possible to fly at high altitude and at high speed. Losing this pressurization requires a drop from cruising altitude where there is not enough oxygen in the air to stay conscious, to 10,000 feet, where this can be done safely without overpressing the fuselage.
Some simple math tells us that from 36,000 feet down to 26,000 feet in 10 minutes, this means the drop speed is 2,600 feet per minute. Considering the standard method drops at a rate of 700 feet per minute. However, this is not unheard of in emergencies, such as United Airlines Flight 510, which dropped 28,000 feet in 10 minutes due to similar pressurization issues. For the same reason, Korean Air flight dropped 25,000 feet in just five minutes.
Although a bit extreme, this rapid drop is a standard operating procedure as shown in the simulator as described above. The pilot immediately put on his own oxygen mask, turned on the passenger's oxygen, and then dropped to 10,000 feet while reducing the throttle. These are memory items that pilots must know in their hearts and perform immediately when needed. Only at the end of the video will the first officer find the manual to continue troubleshooting the problem.
