Space Shuttle flight manifest
November 1985 plan for space shuttle flights Mission 61I (STS-41) through 71C (STS-46), including Mission 62B (STS-2V). Note that flights 61I, K and L as well as 71B are out of sequence, and that had this schedule been kept, 61I and 62B would have seen two shuttles in orbit at the same time. 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 61I (STS-41) through 71C (STS-46), including Mission 62B (STS-2V). Note that flights 61I, K and L as well as 71B are out of sequence, and that had this schedule been kept, 61I and 62B would have seen two shuttles in orbit at the same time. 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.