Originally Posted by
safelife
At altitude TOGA thrust isn't much higher than climb, the difference is almost negligible.
The FMA will show TOGA as thrust, but wouldn't change otherwise - go around mode is armed only with the flap lever out of zero.
ATHR state would switch from engaged and active to just engaged. And would re-activate when THR CLB is re-set.
Raymond : If headwind is increasing, there is a very high chance that it will decrease all the more just after.
In high altitude cruise, wind can make you go from Valpha prot to MMO and the contrary in only a few seconds !
There is nothing ATHR can do about that.
Maybe a solution would be to maintain a speed as high as possible and protect yourself from overspeed with spoilers.
Or be ready to apply altitude corrections to help speed vary.
(In normal law, the flight control computers WILL apply altitude corrections if it comes to that)