(CNN) -- American Airlines, already grappling with union issues and bankruptcy fallout, is now confronting a third problem: growing reports of loose seats. On Tuesday, the company said another flight had experienced loose seats, bringing the total to three flights on two planes in a week. A plane headed from Vail, Colorado, to Dallas on September 26 had seats come loose, the airline's vice president of safety confirmed Tuesday. The same aircraft experienced a similar problem on a New York to Miami flight on Monday morning. That flight had to return to John F. Kennedy Airport. Separately, a Boeing 757 from Boston to Miami carrying 175 passengers diverted to New York on Saturday when three seats in row 12 came loose shortly after takeoff.
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The seats came loose during three flights on two planes
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American Airlines is evaluating dozens of planes "out of abundance of caution"
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The company says it has found six planes with seats that were not properly secured
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A pilots union an American could resume contract negotiations as early as Wednesday
The clamps were used on 47 of the company's 102 @placeholder 757 airplanes.