Many passengers take for a fact that they can breath and operate normally on an airplane at 38.000 feet but only a few know, that they are flying in a "can" - a ticking bomb that could blow up anytime.
An incident that could have lead to that, hadn´t the crew noticed it on time, happened this week on a Sat Airlines flight from Khabarovsk to Yuzhno Sakhalinsk (Russia). Just after taking-off, the flight deck noticed that the aircraft wasn´t pressuring as it should. So the crew had to perform an emergency landing in Yuzhno Sakhalinsk. After performing a rapid descent, the aircraft landed safely about 30 minutes later an neither of the 18 passengers nor crew were injured. The aircraft was grounded and the return flight postponed to the next day. Funny enough, only a week prior to the incident, a similar loss of cabin pressure happened in the same region, to the same aircraft type, to the same airline.
A loss of pressurisation can lead to a slow decompression that can lead to a rapid decompression. The correct thing to do is immediately descend to a lower flight level and if necessary proceed for an emmergency landing. Not only through the cockpit instruments, signs of a slow decompression are shown - also in the cabin. That´s why flight attendants always should be vigilant. If passengers start showing signs of fatigue, tiredness, headaches, pain in the ears - also possibly bleeding, dizzinness, etc, and in the cabin unusual noises, such as whistling or hissing sounds are heard, the cockpit crew has to be immediately contacted. One of the most extreme crashes because of an undetected slow decompression happened in Europe, to the Helios Flight 522 on 14 August 2005 - worth reading an article about it.
A loss of pressurisation can lead to a slow decompression that can lead to a rapid decompression. The correct thing to do is immediately descend to a lower flight level and if necessary proceed for an emmergency landing. Not only through the cockpit instruments, signs of a slow decompression are shown - also in the cabin. That´s why flight attendants always should be vigilant. If passengers start showing signs of fatigue, tiredness, headaches, pain in the ears - also possibly bleeding, dizzinness, etc, and in the cabin unusual noises, such as whistling or hissing sounds are heard, the cockpit crew has to be immediately contacted. One of the most extreme crashes because of an undetected slow decompression happened in Europe, to the Helios Flight 522 on 14 August 2005 - worth reading an article about it.
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