When does an airliner switch from using the tiller to steer to the rudder on takeoff? Same for landing- when does the pilot switch from using the rudder to the tiller? What is this process? Once a pilot switches to the rudder on takeoff, is there a lock for the tiller? I'd imagine that it would be necessary to have some sort of system to lock the tiller so the pilot cannot accidentally hit it at high speed on the ground. If there is a locking mechanism, does it actually lock the tiller or does it simply disconnect the tiller from the nose wheel leaving the wheel free spinning so it can move as the rudder makes slight corrections while taking off/landing? Please expand as much as possible! Thanks.