It was to begin svc on 51 at HG Int at 6+pm.
I saw that someone post SBS0485K perm 88, then suspects that
3816U became SP. So i thought it's a direct swap.
Moreover, it's on 135 that day, so i thought quite possible.
But on the next day, it's back on 88, which made me quite
suspicious of it being an AM bus.
