What is 791? I presume a 767, but what's the full tail number?

And it appears I've been backwards on which airplane is going away and when. I though N799AL was to go next week, and N71CX was good to May of this year. But I think it is 71CX that's done this week. She's flying the Pacific run at the moment, while 799 is getting a B-check in MCC. Easy swap-out.