writes:
Some small jets are currently certified for single pilot operation.

Is the only pilot required to don his mask above some altitude?

AFAIK, no.

Do they actually do it?

As far as I have observed, no.

Does single pilot operation require a smart "descend if pressure is low" autopilot?

AFAIK, no.

(I travelled as a passenger in the copilot seat of a single-pilot jet
once, and am just reporting my observations...)

Chris
--
Chris Colohan Email: PGP: finger
Web: www.colohan.com Phone: (412)268-4751