STS-51-A was the second flight of Space Shuttle Discovery, and the 14th shuttle flight.
STS-51-A mission was unique in that it marked the first time the shuttle had deployed two communications satellites, and retrieved from orbit two other communications satellites. Palapa B-2 and Westar 6 had been deployed during the STS-41-B mission earlier in the year, and had been placed into improper orbits because their kick motors malfunctioned.
Launch date: November 8, 1984 12:15:00 UTC
Landing: November 16, 1984 11:59:56 UTC