It's real easy UAX'ers. List ONE WAY on your metal (SA0X). Then make a separate ONE WAY listing on our metal (SA5X). For my fellow UA'ers...When you see this happen on a mainline flight, politely explain to the UAX'er that there is no way that he/she is boarding ahead of you/your family on a mainline flight. I have brought this to the attention of our union several times now. Two weeks ago a Mesa pilot traveling as an SA0X was number 2 ahead of 20 UAL employees on my "going home" A320. I noticed that one of our Council 12 union reps was also passriding on the flight as well. I printed the "pass rider list" and handed it the the union rep. It was the first that he had heard of this. Until this gets fixed, ALL United Airlines employees need to be aware of this and CONFRONT & EDUCATE these guys when they see this so called "glitch" occuring with OUR TRAVEL BENEFITS!!!