You sure 5189H on 16, it's still happily on 57 today.
It cannot do both 16 and 57?
Maybe the same bus really did both 16 and 57, and I can assure
you it is not a pullover. 57 freq already quite bad, pulling one
bus over to 16 will definitely be causing trouble for
themselves.
So the other question is,
16 partial AMDEP, or 57 partial ARBP?
Take your pick. :)