I'm attempting to determine the number and types of aircraft that NWA has based out of NRT. I had always assumed that the equipment operating out of their NRT "hub" were US-originating flights that then connect onward to another city, return to NRT, then fly back to the US... but, I've since learned that cannot be the case... especially since I've seen NW 757's over there (flying to Busan, for example).

So, anyone have any insight on how many and which types of NW metal are based full-time out of NRT (i.e., don't fly regularly to the mainland US)?