Originally Posted by
vilas
The mandatory requirement to retract one step is for flap full. Airlines for standardization may keep the procedure to retract one step also for flap 3 since it can be landing flap. But it is not necessary. Why would you follow a procedure meant for landing flap when you are not yet configured?
Vilas again the performance for Approach Climb limiting weight for Config3 approach is computed with Config 2. Tables in FCOM for approach climb limiting weights are for Config 2&3 for Config 3&Full respectively. So I assume even if Landing is performed with Config 3, Go around has to be with flaps retracted one step up.