Mounting tools, deploying Sputnik-41

Abort of a planned six-hour spacewalk

Installing a new circuit breaker to restore power to one of four gyroscopes that help orient the complex

Replacing several materials exposure experiment packages and a thruster contamination monitor, installing reflectors and communications equipment needed for the docking of a new European Space Agency cargo ship

Installing three antennas on the exterior of the Zvezda Service Module that will aid the automated docking of a new Station supply craft, the European Automated Transfer Vehicle; replacing of a pump panel on the Zarya module; installation of guides for spacesuit tethers on Zarya handrails; installation of handrail covers near the Pirs Docking Compartment hatch

Preparing Pirs for the arrival of a new Russian module called the Mini-Research Module 2, or MRM2

The cosmonauts moved a Strela-2 cargo boom from the Pirs docking compartment to the Zarya module. This allows Pirs to be undocked at a later date making room for the new Russian multipurpose laboratory. Other tasks included releasing a small satellite and installing debris shields.

They left the Pirs docking compartment in their Russian Orlan spacesuits for a photographic inspection of the station's Russian segment, retrieval of an experiment, window cleaning and surface sampling.