The first dedicated Japanese Spacelab science research was launched aboard Endeavour at 10:23 a.m. on September 12, 1992. The flight also marked the first African-American woman to fly in space, Mae Jemison. The crew was led by commander Hoot Gibson, with pilot Curt Brown, mission specialists Mark Lee, Jan Davis, Jay Apt and Jemison and payload specialist Mamoru Mohri.