Not many airlines use inversion temperatures due to the weight loss
Of course .. but, then, if you lose the engine, don't be surprised to find yourself dead in the water at the inversion ... all dressed up with nowhere to go.
... gotta disagree, you cannot run it back to max thrust due to lack of VMCG prot
You're misreading my intent, good sir.
(a) if flex only then the pilot MAY increase the thrust to the full thrust rated setting
(b) if derate without flex, no increase is permitted
(c) if derate with flex, the pilot MAY increase the thrust to the relevant derate rated thrust setting
Having seen a couple of embarrassments with thrust overswings, including one nasty fatal, any increase pemitted and availed needs to be done steadily to avoid the risk of unnecessary and, potentially, hazardous gyrations. My view is to leave the thing alone unless you are REALLY terrified of hitting the hard bits.
How about, "set thrust to the rated thrust"?
Indeed.
And, if all else fails ... and you are at rated thrust .. and still going down or are going to hit the hard bits ... it is a case of choice ... crash under control and do the best you can .. or trade a bit of extra thrust against a bit more bank as required to keep the heading under control .. and just hope that the extra sideslip doesn't bite you along the way.
One keeps in mind the reality that, on the day, the real Vmca is most likely going to be a bit lower than book so it probably isn't all doom and gloom.
If you are at a low enough weight to be in the Vmca problem region, (moreso for twin than quads) the bird probably is accelerating like a cat on a hot tin roof and, by the time it is sorted out, you will be well above the book V2 problem area.
Generally, I wouldn't be too worried about the Vmcg problem as the risk of increasing thrust is more likely to occur in the air rather than on the ground. Vmca is the one which worries me.
Main concern is in the steady state condition where the pilot has got the situation under control, is on speed .. but still going nowhere. If the operating throttle is just shoved up ... that's when he/she might find out about the sting in the tail.
Very occasionally, a crew is faced with a set of circumstances which accord with the observation that one just ought not to have got out of bed that day ... the sort of day where one earns the entire year's salary in a few minutes and either gets a pat on the back .. or a lot of tut-tuts by the Monday morning quarterbackers.