aston - that looks remarkably like the Airbus system as described earlier - is that definitely 777?
I think he is describing the 777 system. Crucial diffs are:
1. 777 Thrust increases to maintain "Min Manoeuvre speed" (Airbus if it triggers goes TOGA and a bit tricky to get out of it!)
2. FLCH on 777 disables it (for whatever reason) - on Airbus no normal mode can disable it except <100R (when likely too late anyway)
The crucial aspect in aston's post I had not NB'd is that the mode also triggers the "AIRSPEED LOW" EICAS. So v-v, if in FLCH it seems you will not get the "AIRSPEED LOW" EICAS either?