And that $500 million, my friend, is because of labor costs! Just ask AA managment!
Some of it is. But it's nobody's "fault." AA's mainline wages and benefits cost AA a lot more than at its legacy competitors. Wear that proudly.
US paid its mainline employees (wages, salaries, etc) just 24.6% of its 2010 non-express revenues (mainline plus cargo and other fees). AA paid its mainline employees 31.4% of its non-Eagle revenues (mainline plus cargo and other fees). If AA's mainline wages were the same percentage of its revenues as at US, then AA's mainline wages would have been $1.34 billion less than they were. Sure, insourced overhaul at AA accounts for some of that difference, but not all of it. Tulsa and AFW wages don't add up to $1.34 billion (in fact, AA'e entire maintenance operation, line and overhaul, does not cost AA $1.34 billion).