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- A Southwest Airlines flight returned to Denver after an engine cover ripped off mid-flight.
- The plane is a Boeing model that has had other malfunctions recently, prompting FAA inspections.
- Southwest's maintenance team is reviewing the aircraft while the FAA investigates.
A Boeing 737 operated by Southwest Airlines had to turn around mid-flight after an engine cover ripped off on Sunday. It was the latest incident in a series of problems for Boeing planes.