This is one is a fictional Jet2 727-100 even thought the airline is real i dont think they had 727's.
Now I'm still having issues with my ace editor so you can try loading it with yours and see if it shows up in FSX if not uninstall using your ace editor then read the read me file to install it manually
i have I have submitted the repaint to captain sim's catalogue but if its not showing yet you can get it from here
http://nathansfsxrepaints.webeden.co.uk/