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Cronology of Extravehicular Activity

Space Flight Members Started and Ended (UTC) Duration, Criterion The EVA tasks and features
196 ISS
Expedition ISS-50
EVA-1
(from the Quest module)
R. Kimbrough
P. Whitson
12 h 22 min

18 h 51 min
January 6, 2017
6 h 29 min
(from the opening to the closure of the exit hatch)
Replacement of Nickel Hydrogen (NiH2) batteries from EP S4 Integrated Equipment Assembly (IEA) Channel 3A with three lithium-ion batteries. Removal of S3 truss CETA cart light. Photo survey of Alpha Magnetic Spectrometer (AMS). Rousting of MDM Ethernet cable. Placing longitudinal protection covers on Node 3.
197 ISS
Expedition ISS-50
EVA-2
(from the Quest module)
R. Kimbrough
Т. Pesquet
11 h 21 min

17 h 17 min
January 13, 2017
5 h 56 min
(from the opening to the closure of the exit hatch)
Replacement of Nickel Hydrogen (NiH2) batteries from S4 Integrated Equipment Assembly (IEA) Channel 1A with three lithium-ion batteries. Replacement of Camera Light Pan Tilt Assembly (CLPA) on the Mobile Transporter Relay Assembly (MTRA) of MBS mast. Vertical installation of the solar array protection cover restraints and stowage of longitudinal protection covers of module Node 3. Installation of MMOD on Node 3. Installation of the interface adapter for the worksite accommodating foot restrains APFR. Routing of MDM Ethernet cable. Photo survey of the ISS USOS surface.
198 ISS
Expedition ISS-50
EVA-3
(from the Quest module)
R. Kimbrough
Т. Pesquet
14 h 22 min

20 h 50 min
March 24, 2017
6 h 28 min
(from the opening to the closure of the exit hatch)
Replacement of the external unit EXT-2-MDM (controlling USOS solar arrays, external thermal control system ETCS and external robotics) with the MDM unit with Enhanced Processor and Integration Communications Card (EPIC) on the S0 truss.
Inspection of the Radiator Beam Valve Module (RBVM) of the External Thermal Control System (ETCS) on the P1 truss in order to locate an ammonia leak (no ammonia leak was detected in the RBVM).
Detaching the communications line connectors on PMA3 module, installing protective caps on the connectors and securing the communications line with wire restraints to the bulkhead of the Node3 module (to enable transfer of the РМА3 module from Node3 to Node2).
Lubricating Latching End Effector (LEE) of the SPDM robotic manipulator.
Replacing video equipment on the JEMRMS robotic arm and in the fore section of the JEM module.
Replacement of a faulty lamp S1-1 on the CETA cart of the S3 truss segment.
199 ISS
Expedition ISS-50
EVA-4
(from the Quest module)
R. Kimbrough
P. Whitson
14 h 25 min

21 h 28 min
March 30, 2017
7 h 03 min
(from the opening to the closure of the exit hatch)
Replacement of the MDM unit with the enhanced EPIC MDM.
Installing 3 (instead of 4, one shield was lost in the course of the EVA) longitudinal protective shields on Node 3.
Installation of the encircling protective shield on the PMA 3 module.
Removal of protective cover on the PMA 3 module.
Connecting cables on the PMA 3 module.
Closing the flap of protective cover for the central disk on the Node 3 module.
200 ISS
Expedition ISS-51
EVA-1
(from the Quest module)
P. Whitson
D. Fischer
16 h 05 min

20 h 14 min
May 12, 2017
4 h 09 min
(from the opening to the closure of the exit hatch)
Removing and replacing USOS EXPRESS carrier avionics (ExPCA) on ELC4.
Installing a special cap on bus 1553 connector of Alpha Magnetic Spectrometer (AMS).
Installing the protective screen on PMA3 nose part.
Securing MLI on JEM RMS.
Moving APFR foot restraint from COL to PMA-3.