The reason I say this is that on the 737 the 'alt warning' comes from a pretty crappy switch in the fwd electronics bay and it is certainly not unheard of for these to fail to operate correctly. The captain may have then thought the aircraft must be ok because we haven't had a 'cabin alt' warning so goes back to speak to the passengers just to reassure them leaving a flight attendant and first officer in the flight deck but the aircraft continues to depressurise then people start to surcome to hypoxia including one captain and his crew who are not on oxygen because he doesn't think there is a problem with the aircraft anymore and we know the rest from here. ![]() The problem could of then come up when the flightcrew could of got a master caution along with the overhead light and looked up to see that the 'pass oxy on' light was illuminated. I think what could of happened is that the aircraft had the pressurisation problem that we know about but then thought they had fixed it so climbed to altitude. What have the Investigation Authorities located in the search. ![]() Anyone confirmĪt work this is a very Puzzling Accident discussion. I realise the accident a/c wasn't a 200 series a/c but I expect the Pressurisation logic would be similar. Not before giving the Crew adequate warning. If it goes to full open at altitude,it could get the cabin pressure to ambient in seconds. Preflight checks on Qty gauge & O2 Bottles mandatory.Difficult to believe all were INOP.Īnd that points a finger towards a runaway outflow valve. ![]() If the reports are true of the f/o being slumpled over the control column, that might have caused it to lose its vertical modeĭepends on the pressure load aplied to the Force TxDcr to disconnect A/P.Įither from a previous incident where it was not turned off and leaked down, recharged and not connected correctly valve left close or open whatever the case maybe or even worse plane was dispatched with empty or low O2 bottle
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