|Total EVA time:||12h 58m|
|No.||Date||Together with||Time||Main tasks and notes|
|1||21.12.2013||R. Mastracchio||5h 28m||
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.
|2||25.12.2013||R. Mastracchio||7h 30m||
They removed a spare pump module from the ESP-3 and installed it on the Starboard 1 (S1) Truss.