Best way to check loads is on the website aa.com. If you point to reservations a submenu will pop open and you can select VIEW AVAILABLE SEATS. This takes you to a submenu where you plug in the flight #, the date, and the depature city. Then it shows you a map from saab to 777 that allows you to tell how many seats are left. The only think you don't know is how many non revs. If you call res they won't tell you exactly how many seats are left. Most likely all they will tell you if availablity is good, marginal, or oversold.