ATR 42/72 Taxi without nose wheel steering iAw MEL :
51-1 Nose wheel steering
5 – REMARKS OR CONDITIONS
* (O) May be inoperative provided:
1. Centering function is not affected, and
2. All brakes are operative, and
3. maximum crosswind component is
limited to 15 kts, and
4. The aircraft is not operated on narrow
runways (width < 30 m (98 ft))
Maximum demonstrated crosswind component for take off and landing is 15 kt.
Apply asymmetrical thrust and differential braking for taxi and line up as
required.
Avoid sharp turns while using brakes.