Originally Posted by FlyingTrojan

Unfortunately, I do not believe so. You can still use the F check in area, but you will not have access to the seperate Flagship Check In since you are on an arriving itinerary. The website states that you must be on an outbound international F flight. (or 3-class transcon, AAirpass, CK, etc.)

F check in feeds to the same security line, you just won't get to cut to the front of it. I've never waited more than 15 min. in that line.