Mongo, Dale and Jonty
I had asked Airbus why land in Conf3 in specific case of Hyd G+Y Fail when flaps are jammed slats have no 3 position? I quote from the reply from Airbus"
I agree with you that selection CONF 2 during approach, and maintainingCONF 2 for Go-Around could have been less misleading for the pilot.
But the rationale of selecting CONF 3 for A320 family aircraft ishistorical, as this configuration has been proved, in terms of certification,as being the optimum one in terms of handling qualities in alternate law.”
Airbus removed this in A330, they leave the lever in Flap2 and land in Flap2. Flap lever doesn't do much more upto Conf3 only it reduce the roll rate in full. The incidence quoted is due to non standard configuration of flaps and slat and that to not because of the flap lever but actual movement of slat from full to three. Had the slats also jammed in full nothing would have happened