FM Erie Built A Unit UP Version Phase 1These are N scale 3D printable files for the Union Pacific Railroad (UP) Fairbanks Morse Erie Built A Unit in its Phase 1 configuration the UP's early FM Erie Built locomotives as originally delivered, numbered 50 M 1A and 50 M 2A (later renumbered 981A and 982A, and subsequently 700 and 701). Designed to fit on a Kato PA donor mechanism. The Fairbanks Morse Erie Built was a distinctive cab unit locomotive produced by Fairbanks Morse in the late