There's a few threads that covers a lot of them.

Gun status codes: http://www.era-go.com/forum/showthre...ns-statue-code
Event item status codes: http://www.era-go.com/forum/showthre...aut-code-items
Misc status codes: http://www.era-go.com/forum/showthre...6-Status-Codes

The lists are a little outdated but are still working.