Do modern heavies all have differential braking on the main gear? Could this
be used to keep the a/c on the intended track (on the ground)? Is this
controlled by the foot pedals as in light aircraft? I'm sure a lot of us SLF
would like to hear from an ATPL.
Yes to all.
Not only modern heavies. I flew Boeings 737 767 777 747. They all had differential braking using ruder peddals.