If you delete that file, Alplane.acf, the World Traffic (Other) option no longer appears in the AI menu. Perhaps it is no longer possible to use WT3 planes in this way. There is an airplane AI on the X-Plane forum that works pretty well and is not too much of a drain on resources. I wanted to test the WT3 planes to see if they are even less of a drain on resources. Oh well. Thank you for all of your help.