Amending a clearance?
Evening all... I hope I'm in the right place, but I've been having a nagging question of late.
I'm an Approach radar and tower ATC and as such we were taught the basics of what goes on in a cockpit in terms of clearances etc.
I was taught that one should always try avoiding the issued clearance if at all possible.
My question is this...
Number 2 is ready to go, but can't do because the SID he's on will conflict with other traffic. But it will only do so for another minute or two.
Would pilots prefer to wait the minute and stick with the clearance they were given and have briefed, or get an amended clearance and go straight away?
How much work actually needs to be done on their part?