The use of the automatics should obviously be encouraged to "off load" pilot workload.
The problem arises where the flight crew don't understand what the automatics are doing. This creates unintended confusion particularly in critical flight phases. Coupled, perhaps, with crews who may be fatigued, or who are new on type, this can develop rapidly into an undesirable situation.
For this reason, the all engine go around manoeuver must be practiced regularly in BOTH manual and automatic modes up to a SAFE altitude. It must be second nature to pilots.
Unfortunately, we just do not seem to practice this enough.
