So, come on, why (besides the Boeing procedure) can we not disengage the A/T, in auto flight, once G/A thrust is set, thereby avoiding the possibility of power reducing in the event of altitude acquire?
Of course you can disengage!Boeing cant make procedure for every possible scenario..can they?
Now they dont say that the AT MUST be ON,it is RECOMMENDED procedure.
For the rest you are paid to use sound judgement in different possible scenario with your knowledge/experience/skills/aircraft manufacturer standard procedure/SOP/Airmanship....blablabla.
There is NO TECHNICAL reason,some aircraft were not even fitted with AT...i believe it was the case when SWA got their 737s.