The Federal Aviation Administration (FAA) has initiated an audit and increased oversight of Southwest Airlines following a series of safety-related incidents. These include flights descending dangerously low, such as a July 14 flight that dropped to 150 feet above Tampa Bay and a June 19 flight that descended too low near Oklahoma City. Additionally, incidents involved a plane taking off from a closed runway and another experiencing severe oscillation known as 'Dutch roll.' Southwest has confirmed its cooperation with the FAA and has formed a team to analyze and improve safety measures. The FAA's scrutiny is part of broader efforts to ensure airline compliance with federal safety regulations.