The American Airlines logo (Pic via planebuzz.com ) AMR Corporation — the parent company of American Airlines, which provides a large number of South Florida jobs — filed for bankruptcy under Chapter 11 today. According to The Miami Herald : Unable to cut costs enough to fend off creditors, American and its parent company, AMR Corp., filed for Chapter 11 protection Tuesday morning while it tries to lower its debt and reorganize its business. American is one of the five largest private employers in Miami-Dade County, with about 9,000 workers.