I_FLYINDIGO
From QRH OVERWEIGHT LANDING
If the aircraft weight is above the maximum weight for go-around (given in the table below), use FLAP 3 for landing.
In all cases, if landing configuration is different from FLAP FULL, use 1+F for go-around.
The second line also is applicable only for overweight landing. For weight below max landing go round with flap one step less.