As a Fleet Service Clerk at American Airlines you need to be a team player. Typically, a crew consists of five clerks. Everyone has a responsibility and working in unison ensures that everyone works safely and that the flights are going out on time. You also need to be flexible, schedules in the airline industry are unpredictable due to weather and other uncontrollable variables. Since the major airport hubs are a 24 hour operation you have to be willing to stay for overtime if it's necessary.