ISO 540.
Yip, cannot stall or overspeed the aircraft with the autopilot engaged. How?
The Columbia intergrated G1000 with the GFC 700 is programmed to recognise set parameters such as stall and overspeed. The PFD will announce visually and aurally that that exceedence has been reached and then correct the aircraft automatically in pitch to prevent the event ever happening.
It is hoped that the pilot will recognise the event with the flashing red annunciator "stall" and the big noise and be able to lift his/her hand to the throttle.But even if they dont the aircraft will still take care of the event in a rather unexciting way until pilot wishes to regain manual control. Of course the stall or the overspeed will never actually occur, the system prevents it happening at 10 knots above the normal stall warning and five before overspeed.
The oxy gage is normally on the MFD but if this screen drops off line then it will revert to the PFD. So instead of one steam driven gauge you now ahve an integrated one and a backup.
You are right it is b......y impressive.