Train Miniature HO Union Pacific Alco FA-1 Powered Diesel Locomotive w/ Box August 16, 2026 By 0 Classic HO scale powered Alco FA-1 diesel locomotive in Union Pacific livery. Includes original Train Miniature box and instruction sheet. Alco FA-1 Diesel Locomotive. This is the matching powered A-unit for the Union Pacific 1601-B dummy unit.