hello, I tryed today several things,1 inserted my star, no problem,2 deleted the missed app lines, I could delete 2 lines, but still 2 remaining, I tryed to delete those, but I get the error "invalid delete"3 then I tryed to select a waypoint on line 5 and put them on line , execute but i was not working, so I started all over again programming the whole routing in the fmc, but this time after programming the star, I let the missed app line as there are, now I selected a waypoint and put them on line 1, so at the top, now all was working fine. I fly several years with the pmdg 747 without any trouble, I will try today A new flght and will test those things, I will report when a error happends, thanks for your help so far