747-400 Go Around FMAs
I'm slightly confused about the sequence of FMAs during a TO/GA missed approach and was wondering if someone could edify me.....?
I'm quite happy with the mechanics etc of the go around - as far as selecting VNAV at 1000ft agl. Does the AT go into THR REF or stay in THR at this point? If it's THR REF, what limit is it referencing? CLB?
Initially TOGA pitch is aiming to achieve 2000fpm (at the MCP or engagement speed) and THR applies/adjusts power to achieve that. Once VNAV is engaged and pitch reverts to VNAV SPD are the "roles" not effectively reversed, with the AT supplying a fixed thrust (eg. CLB) and the pitch axis now adjusting to achieve that speed?
Would really appreciate any wisdom and insight that could be offered!
I'm new to the type and the FCOM is a little vague on the subject....