I've been doing some research but how can I tell exactly what model aircraft is being flown from JFK>TPE>SGN and SGN>TPE>JFK? I narrowed it down to either 77A or 77B. On both trips I have a short leg (from SGN>TPE) in elite class (21K). According to seatguru on 77A 21K there is no window, but 77B there is a window on 21K. Can anyone tell me if 21K indeed does have a window or not? Not the biggest problem but I think I would prefer a window if given the choice. Thanks in advance!