Flash Butt yard, stored with no engine Goninan ALCo to GE rebuild C36-7M unit 5506 with serial number 4839-01 / 87-071. This was the first unit in the world to be built into a C36-7 from an ALCo C636 locomotive. It was rebuilt 1987 from AE-Goodwin built ALCo C636 numbered 5455 with serial number G6012-4.