Does anyone know what Publication replaced DA PAM 750-3?

Hello scoundrels, I'm an aviator working on our Aviation Resource Management Survey (ARMS) helping our Aviation Ground Support Equipment (AGSE) section, the newest ARMS checklist cites DA PAM 750-3 multiple times, but when I go to APD it says it's "Inactive" and can't be downloaded. I can't find what replaced it anywhere online. Do any 91 series or similar series MOS know what replaced it and where I can find this replacement?