Sorry but I deleted the planecrash pic :(
The resolution depends on either your ingame-settings or in case you're using the editor, it depends on the resolution of the editor-window. Just tripple the size for example. In my case that is 4248x2655. But I guess the error of a crippled shot may be something else then the res, I used lots of different resolutions and never got a crippled shot with any of them.
greets