If you look at the QRH for O/weight landings you will see that it directs you to 03.05.35 which will lead you to ONLY select Config 3 for the O/wt landing case..
Also some operators are reverting to config 3 in the single eng'landing case,for better go/around perf'(there's a note
there in the NPA case)
All pointing to the higher approach speed case(5knots?)
