[singpilot]

Can happen any number of ways. Time of USEFUL consciousness is measured in seconds. There are factors (shorter times) for health, surprise factor, suddenness of onset. Plane was at 34000. Outside (now inside) temp could be -20C to -50C.

We always discuss these scenarios on ocean crossings. Worst case scenario is some sort of a pressurization failure. Would have to take an (otherwise) perfect airplane (engines) down low enuf for pax to breathe, AND stay warm. Fuel flows double or more.

I'll usually mention to the lead FA as I walk aboard as a passenger that I am typed and / or current in the plane type if help is needed.

Intercept pilots said FO was slumped, Captain was not in his seat.

Sad, but this business keeps teaching some people that we don't get paid for the good days.