Seeing the 'pin'
On all the Boeings (and the A520/319) I've operated it is important to see the steering pin before commencing taxy.
Seeing 'the pin' ensures that the ground crew are not still in front of the nosewheel and are clear when you commence the taxi.
I have had the pin, taxied off to find that I had no nosewheel steering. I'll get back to you on how we fixed that 'cos for now I can't remember and can't even remenber which aircraft type it was - the pin had been removed however.
Regards
Exeng