Alpha Magnetic Spectrometer – 02 (AMS): The crew performed an AMS procedure review in support of the upcoming EVA to replace the Tracker Thermal Control System (TTCS) with an Upgraded Tracker Thermal Control System (UTTPS). Over time, the TTCS cooling pumps have slowly degraded and have experienced a loss of coolant (liquid CO2). The UTTPS …
Click here for original story, ISS Daily Summary Report – 11/06/2019
Source: ISS Report