Pressurized Mating Adapter 3 was installed on the Unity Connecting Module nadir port.

The Z1 utility tray was deployed and its umbilical launch restraints released. The Z1 Manual Berthing Mechanism latches was cycled and opened. Wisoff and Lopez-Alegria performed one safety protocol test -- a flight evaluation of SAFER.

Hooking up connections between the P1 and S0 trusses and do other work and installations

Installation of the fluid jumpers where the S0 and the P1 are attached to each other, relocation of the CETA cart from the P1 to the S1 Truss.

Installation of more SPD's (Spool Positioning Devices), reconfiguration of electrical har-nesses that route power through the Main Bus Switching Units and attaching Ammonia Tank Assembly lines.

Retrieving equipment and photograph the station's Russian Zvezda Service Module's docking port, Tyurin also hit a golf ball from a specially designed tee mounted on the Pirs airlock as part of a Russian commercial activity

Completing the activation of the lab complex's permanent ammonia cooling system. They made several of electrical and fluid line connections to tie the heat exchangers into coolant loop A.

Reconfiguring the second of two cooling loops for the Destiny module, securing the aft radiator of the P6 truss after retraction and preparing the obsolete Early Ammonia Servicer for removal this summer.

Removing shrouds, which provide thermal shading and which are larger than king-size bed sheets; they also made groundwork for attachment of a cargo carrier and preparing work for the relocation of the P6 Truss

Successful attemp to free a stuck antenna on the ISS Progress M-58 cargo craft docked at the aft end of the station. They also surveyed docking navigation systems for the European Automated Transfer Vehicle.