Oxygen for the cockpit crew

[Espero]

Hello everybody

In my company's new SOP there is a change about tha use of oxygen for cockpit crew: the cabin altitude must be 13,000 ft for the use of oxygen mask.

Something has been chenged in the regulation?

Thanks

[Amadis of Gaul]

It would be helpful if you mentioned under what regulations you're operating...

[Three Wire]

The first symptom of hypoxia is the loss of colour vision by night above 10000 feet. That is why pilots need oxygen above 10000msl.

I would be very surprised if any regulator allowed 13000 feet for pilots.

[esreverlluf]

Be very surprised then! In the USA under part 91 regs, you a re allowed up to 14 000' for no more than 30 minutes at a time!

https://www.aopa.org/training-and-safety/pic-archive/pilot-and-passenger-physiology/oxygen-use-in-aviation

[Skyjob]

Who's going to change the warning systems to take this change into account?