Installing orbital debris protection panels on the Zvezda Service Module and replacing experiments on the hull of Zvezda

Installing a section of Ethernet cable on the Zarya module, installing additional Service Module Debris Protection (SMDP) panels on Zvezda, and deploying a Russian scientific experiment

Replacing a failed power controller on the station's truss, jettison a refrigerator-sized ammonia reservoir tank and clean seals on a docking port on the Unity module

Preparing the recently delivered Russian Rassvet Module for future automated dockings by Russian spacecraft

Installing a multipurpose workstation on the starboard side of the Zvezda service module’s large-diameter section, cleaning thermal insulation around the vents for the Elektron oxygen generation system and relocating a television camera from one end of the Rassvet docking compartment to the other (failed due to interference with insulation where it was to be installed).

They replaced a fluid flow regulator on the Russian segment’s Zarya module. They also removed the Photon-Gamma unit of the Molina-Gamma experiment, which measures gamma splashes and optical radiation during terrestrial lightning and thunder conditions, from a portable workstation on Zvezda.

They continued routing power and Ethernet cables for the future arrival of the Russian Multipurpose Laboratory Module, which will be launched aboard a Proton rocket from the Baikonur Cosmodrome in Kazakhstan. They also installed on the Poisk module a panel of experiments designed to collect data on the effects of the microgravity environment in low-Earth orbit.

The cosmonauts removed a space laser communications system from the hull of the Zvezda service module and planned to install a pointing platform on which a small optical telescope will be installed on a future Russian spacewalk. This task failed.