Originally Posted by
zerozero
Or, did they just screw up the preflight? Asking because, a runway change checklist wouldn't help in the second case.
It's possible they didn't know the SFO routine, and just guessed the departure runway, like we do all the time at a variety of airports, and then find out when we call for taxi. Of course in that case you need to have the SA to verify you're setup for the right one.