The EVA mainly focused on disconnecting the failed loop A pump module from its location on the Starboard 1 (S1) Truss - including the infamously difficult ammonia disconnections.

They removed a spare pump module from the ESP-3 and installed it on the Starboard 1 (S1) Truss.

This spacewalk focused on completing cable and antenna rigging for the "Bartolomeo" science payloads platform outside the ESA Columbus module. The duo also configured a Ka-band terminal, known as COL-Ka.

Main tasks were the installation of a final lithium-ion battery adapter plate on the port 4 (P4) truss that wrapped up battery replacement work begun in January 2017.

They vent and relocated ammonia jumper cables, installed a structural "stiffener" on the airlock thermal cover, and completed the connection of payload cables on the new Bartolomeo platform on the Columbus module.