Space Shuttle Discovery launched on mission STS-51-I, marking an important endeavor in the ongoing development of satellite communication technologies. The mission commenced at the Kennedy Space Center in Florida, and Discovery's primary objectives included the deployment of three communication satellites into geosynchronous orbits while simultaneously addressing an urgent repair need for a fourth satellite that had encountered technical difficulties. This particular mission was notable for using a new method for satellite deployment and repair, demonstrating the shuttle's versatility as a space vehicle capable of not just transportation but also active participation in maintaining and enhancing the infrastructure of space communication.

The STS-51-I mission was crewed by a team of seven astronauts, including the commander Charles D. Gemar and pilot Frederick D. Gregory, as well as mission specialists who were responsible for the deployment process. During the mission, Discovery accomplished the deployment of the three satellites—FLTSATCOM-6, the LEASAT-4, and the TDRS-3—and successfully executed the repair on the malfunctioning communications satellite. Over the course of five days, the crew performed a variety of experiments and operations that showcased the shuttle's capabilities. The mission concluded with a safe landing back at Kennedy Space Center, completing its series of goals.

STS-51-I was part of NASA's shuttle program that revolutionized access to low Earth orbit and expanded the United States' ability to deploy and manage satellite networks, contributing significantly to both commercial and government communications.