Mmm ...
Hi Mick....
Yes you might get the Nr Nf overspeed warning ... you would certainly get a "Man Gov" CAS and MFD warning ... it all depends really on the power setting at the time of the selection and what pilot commands then happened ...
Remember ... this is rumour ...we really do not know what happened or even IF it happened ...
You would not cook the good engine engine the 'auto engine' would wind down if power demand was reduced.
The engine in 'manual' would hold power and drive the Nr and if the collective were lowered it could then cause an overspeed ... if the power setting was high it MIGHT o'temp .... only the guys in the a/c would know for sure what happened ...
