How would you handle this Crew Oxygen Low situation

[beardy]

Cosmo,

I take the point about declaration.

Fuel Emergency or fuel priority are not recognised terms

They still are not, minimum fuel has now become one, with a specific meaning that does not preclude the use of pan nor mayday.

From the CAA document:
"An urgency message (situation not requiring immediate assistance) is prefixed: PAN-PAN, PAN-PAN, PAN-PAN."

That is exactly what I said. A Pan call is nothing more than an urgent message.

There is a difference between a message that is urgent (of itself) and a message of urgency i.e. one that relates to a situation that requires urgency. So if you wish to'declare' something it would be a situation that requires urgent (as opposed to immediate) attention and one that gets adequate RT priority (greater than a normal message, but less than a mayday.)

There is no problem with declaring a mayday, it can always be downgraded to a pan or rescinded.

dkz,

The point about the portable oxygen is not exactly valid because of comms, oxy pressure at high altitude and lack of smoke goggles. On the portable mask there is no mic, on the next sim try to handle an emergency descent without one ... also try a smoke drill without goggles.

There is no problem with oxy pressure at alt, think about cabin crew procedures. I have a mic on my headset which I wear over my EROS (but only to use the earpiece, but the mic is still available.) Good point about goggles.

Of course in extremis the smokehood is available, but I wouldn't want to rely upon it in an emergency descent on emergency electrical power ( a situation that can arise when following Airbus drills for smoke and fumes.)