See UBAKUSAT (UBAK-3U-SAT) ↑. 1U cubesat by Istanbul Technical University. Mission: Technology demonstration and Earth observation satellite to provide voice communications for amateur radio stations. Status as of 2019: Active. .

See 1KUNS-PF ↑. 1U cubesat by University of Nairobi. Mission: Mapping of Kenya's land mass, monitoring of the coastline and helping combat illegal logging activities. Status as of 2019: Active. .

Transferred a Pump Flow Control Subassembly over to Dextre stowed failed PFCS on ESP-1, Replaced camera and lights used to film NASA TV, Replaced Space to Ground Transceiver Controller, Performed get aheads to Install handrails on Radiator Grapple Bars on S1, Removed thermal blankets and MLI from two Direct Current Switching Units on ESP-2, Prepped the Flex Hose Rotary Coupler on S1 for replacement. Spacewalk suffered a 7-minute delay because of a water leak which formed ice crystals inside the airlock.

See EQUiSat↑. 1U cubesat by Brown University. Mission: Open-source satellite to encourage involvement of students and amateurs in aerospace design. Status as of 2019: Active. Accepted to NASA's CubeSat Launch Initiative in 2014. .

Feustel and Arnold installed new high-definition cameras near IDA 2 mated to the front end of the station's Harmony module. The additions will provide enhanced views during the final phase of approach and docking of the SpaceX Crew Dragon and Boeing CST 100 Starliner commercial crew spacecraft.

The cosmonauts launched four cubesats and installed the Icarus experiment. Spacewalk fell behind schedule when Icarus failed to seat properly putting the spacewalk 90 minutes behind and calling for an hour extension. The cosmonauts finished the spacewalk by retrieving experiments from the Pirs docking compartment and Poisk module.

See Irvine 01. 1U cubesat by Irvine CubeSat STEM Program[192]. Mission: Educational mission that gives high school students the experience of building, testing, and controlling a nano-satellite, with the aim of developing interest and talent in the science and engineeri.

See Irvine 02. Technology 1U cubesat for Irvine Public School Foundation, Irvine, California. 1U cubesat by Irvine CubeSat STEM Program. Mission: Test propulsion system and LED communications. Status as of 2019: Awaiting Launch. Built by high school students. Selected by NASA for CubeSat Launch Initiative. 1017LT SSO.

The cosmonauts went outside to install a plug and thermal insulation on the Soyuz MS-09 spacecraft which was damaged by a powertool causing an air leak. The cosmonauts gave Soyuz MS-09 a clean bill of health before they patched it up clearing the vessel for entry on December 20, 2018. Get ahead task included swapping experiments on the Rassvet module.

See Kosmos 2533 (Blagovest 13L). Blagovest military communications satellite. Some reports suggested a problem with the final Briz-M burn, but on December 29 it was shown by US tracking in a 35421 x 35802 km x 0.2 deg orbit drifting over 77E.