UP B30-7A #253, Cotter, AR, April 5, 1989, photo by Chuck Zeiler
Delivered as MP #4853 in February 1982 (c/n 43678) it was renumbered in November 1986. The A in B30-7A denotes that the prime mover was 12 cylinder instead of the 16 cylinder prime mover in a B30-7, but still produced 3000 horsepower.