Originally Posted by
Aluminium shuffler
Chesty, the difference is that on take off, the speed is controlled through the MCP window, not the flap lever, and both target speed and level off tend to be higher, so a wider margin over minimum speed is commanded and usually attained before Alt Aqu can knock it back to a speed below safe flying speed for the flap position.
Take off and go around the speed is controlled by pitch.
The speed
bug is controlled by the MCP and the flap lever...until ALT ACQ. There's no real difference in the way you fly it (hand flying with AT engaged) up to that point.