Heavy A321
There was rather hot day and we perform TO on A321 with mass of 82tons. after an accel hight we engage AP and retract flaps in pos 1. The S speed was 211 and upon reach it there was autoflap retraction. So the next step Flaps 0 and... the Vls of clean configuration arose up to 220. Due to very slow a/c acceleration we were forced to disconnect the AP and handle the a/c so as not to be below Vls clean. In addition there was turbulence.
May be you have some thoughts how avoid AP disconnection!
Any comments appreciated.