As a Fleet Service Clerk for American Airlines one of the best benefits is that you are allowed to trade shifts with your coworkers. This means that if you don’t want to work on a Friday you can have someone pick it up for you. There’s a large network of clerks and most of the time you can find someone to work for you. I was able to go to school full time and trade all of my weekday shifts and just work on the weekends. This job can be as flexible as you want.