Due to lack of market interest, McDonnell Douglas dropped its plans to offer the MD-80 Advanced during 1991. Then in 1993, a "mark 2" MD-80 Advanced version reappeared with the modified JT8D-290 engines as previously proposed. The company also evaluated the addition of winglets on the MD-80. In late 1993, Pratt & Whitney launched a modified version of the JT8D-200 series, the -218B, which was being offered for the DC-9X re-engining program, and was also evaluating the possibility of developing a new JT8D for possible retrofit on the MD-80. The engine would also be available on new build MD-80s.