"Ramapriya" wrote in message
I remember seeing a button on the A320 flight deck for disconnection of
the nosewheel steering control.

The nose wheel steering can overpower the towbar. That can cause the towbar
to break, or the airplane to break, or the human operator to break. On some
other types of aircraft, the nose wheel steering is disconnected when the
rudder gains authority with airspeed.

D.