STS-114 is classified as Logistics Flight 1. Among the Station-related activities are delivering new supplies and replacing one of the orbital outpost's Control Moment Gyroscopes (CMGs). STS-114 will also carry the Raffaello Multi-Purpose Logistics Module and the External Stowage Platform-2.
The crew is slated to conduct at least three spacewalks while at the ISS. The first spacewalk will demonstrate repair techniques of the Shuttle's Thermal Protection System. During the second, the spacewalkers will replace the failed CMG with one delivered by the Shuttle. On the third, they will install the External Stowage Platform.