NTSB Identification: CHI07LA063
This is preliminary information, subject to change, and may contain errors.
The flightcrew reported that they depressurized the airplane after noticing cracking of the airplane windshield. They then donned their oxygen masks but were unable to obtain oxygen from the oxygen system resulting in their loss of consciousness.
...
The oxygen system worked when it was functionally tested in accordance with Airplane Flight Manual.
NTSB, rather than the local news. So not just journalese.
FL270... they may not have recognized how fast anoxia would set in, IF indeed they depressurized before trying to use the oxygen system.
They survived.... thanks to their guardian angel....
Whether they goofed, as only the report suggest so far... not really the issue, is it?
But if this thread remains in the back of some people's minds, and saves some lives in the future, it will already have served its purpose.
"Oxygen FIRST, everything else afterwards."