A blue-top, silver and redesigned livery with a new corporate "Korean Air" logo featuring a stylized Taegeuk design was introduced on March 1, 1984, and the airline's name changed to Korean Air from Korean Air Lines. This livery was introduced on its Fokker F28 Fellowships and Boeing 747-300s. It was designed in cooperation between Korean Air and Boeing. In the 1990s, Korean Air became the first airline to use the new McDonnell Douglas MD-11 to supplement its new fleet of Boeing 747-400 aircraft; however, the MD-11 did not meet the airline's performance requirements and they were eventually converted to freighters. Some older 747 aircraft were also converted for freight service.