Space Shuttle flight manifest
November 1985 plan for space shuttle flights Mission 71O (STS-58) through 81E (STS-63); the use of the letter O means they had 15 flights planned for KSC for fiscal year 1987 (until September 1987.) August 1988 was the latest they had flights planned, although the manifest was issued monthly, meaning there could be a December 1985 and January 1986 manifest lurking around. This was the latest such plan prior to Challenger that I could find.
Space Shuttle flight manifest
November 1985 plan for space shuttle flights Mission 71O (STS-58) through 81E (STS-63); the use of the letter O means they had 15 flights planned for KSC for fiscal year 1987 (until September 1987.) August 1988 was the latest they had flights planned, although the manifest was issued monthly, meaning there could be a December 1985 and January 1986 manifest lurking around. This was the latest such plan prior to Challenger that I could find.