US EVA 50 Pump and Flow Control Subassembly (PFCS) Relocate: Today Drew Feustel (EV-1) and Ricky Arnold (EV-2) executed US EVA #50. The following tasks were accomplished during the EVA:

A swap of the Pump/Flow Control Subassemblies (PFCS) between the Enhanced ORU Transfer Platform (EOTP) and External Stowage Platform (ESP)-1 locations

Removal and Replacement (R&R) of the Camera Port #13 (CP13) External Television Camera Group (ETVCG)

R&R of the degraded Space to Ground Transmitter Receiver Controller (SGTRC)

Installation of the S1 forward and aft RGB T-handles

S1-FHRC strut preps

ELC2 spare DCSU MLI removal and MLI skirt tie backs

The Phase Elapsed Time (PET) for US EVA #50 was 6h 31m.

Mobile Servicing System (MSS) Operations: This afternoon & evening, robotics controllers are performing post-EVA operations to unstow the Special Purpose Dexterous Manipulator (SPDM) with the Space Station Remote Manipulator System (SSRMS). Once the SPDM is unstowed, the MT will be translated from Worksite (WS) 6 to WS 8 in preparation for tomorrow night’s transfer and install of the spare Pump Flow and Control Subsystem (PFCS) from the SPDMs Enhanced ORU Temporary Platform (EOTP) to the P6 long spacer. These activities will allow ground controllers to gain insight into the PFCS to perform a firmware update and a Flow Control Valve (FCV) functional checkout.

Today’s Planned Activities

All activities are complete unless otherwise noted.



Internal Audio Subsystem (IAS) Extravehicular Activity (EVA) Communication Configuration

External Wireless Instrumentation System Network Control Unit EVA Inhibit

ISS HAM Radio and Video Power Down in Columbus

ISS HAM Radio Power Down in Service Module

EVA COTS UHF Communication Unit (CUCU) Verify off

Extravehicular Activity (EVA) In-Suit Light Exercise (ISLE) Preparation

Environmental Health System (EHS) – Compound Specific Analyzer-Combustion Products (CSA-CP) Extended Maintenance

Health Maintenance System (HMS) Automated External Defibrillator (AED) Inspection

Checking shutter closure on SM windows 6, 8, 9, 12, 13, 14 Note 5

FAZOPEREKHOD. Preparation steps and starting the experiment.

Countermeasures System (CMS) Advanced Resistive Exercise Device (ARED) Cylinder Flywheel Evacuation

DAN. Experiment Session

DAN. Assistance with the Experiment and Photography

Extravehicular Mobility Unit (EMU) Purge

Extravehicular Mobility Unit (EMU) In-Suit Light Exercise (ISLE) Prebreathe

Crewlock Depress

FAZOPEREKHOD. Closeout Ops.

FGB Gas Analyzer Vacuum Cleaning

Crewlock Post Depress

Crewlock Egress

Worksite Setup

High Definition Video Camera Assembly 2 Activation in High Definition Mode

СОЖ maintenance

PWS1 booting in safe mode

HDVCA2 SD setting and PWS1 power off post PWS1 Troubleshooting

Emergency Ammonia Hardware Move

Pump/Flow Control Subassembly (PFCS) Flight Support Equipment (FSE) Isolate

Release Failed Pump and Flow Control Subassembly (PFCS) from EOTP

Spare Pump/Flow Control Subassembly (PFCS) Relocate

CALCIUM. Experiment session 8

FAZOPEREKHOD. Preparation steps and starting the experiment.

Preventive Maintenance of SM Ventilation Subsystem. Group А

Install Failed Pump and Flow Control Subassembly (PFCS) on ESP-1

Monitoring RS structural shell surfaces using Multipurpose Eddy Current Device МВП-2К.

Pump and Flow Control Subassembly (PFCS) Worksite Cleanup

SSRMS EVA Support

SSRMS Setup

CP13 External TV Camera Group (ETVCG) R&R

SSRMS Cleanup

Space to Ground Transmitter Receiver Controller (SGTRC) R&R

Extravehicular Activity (EVA) Get Aheads

FAZOPEREKHOD. Closeout Ops.

Preparing to downlink data on monitoring structural element surface

IMS Update

Crewlock Ingress

Emergency Ammonia Hardware Stow

EVA Glove Photo Setup

Crewlock Pre Repress

Crewlock Repress

Extra Vehicular Activity (EVA) Post-EVA Activities

EVA Glove Photo Downlink

Photo/TV Extravehicular Activity (EVA) Camera Disassembly

Internal Audio Subsystem (IAS) Extravehicular Activity (EVA) Communication Deconfiguration

Photo/TV Extravehicular Activity (EVA) GoPro Downlink

External Wireless Instrumentation System (EWIS) Network Control Unit (NCU) Enable

Reminder HRF Generic Urine Collection

HRF Generic Urine Collection Male – Subject

Completed Task List Activities

None

Ground Activities

All activities are complete unless otherwise noted.



A/L Pre and Post EVA Ops

Port SARJ Locking/Unlocking

SPDM unstow and MT Translation from WS6 to WS8

Three-Day Look Ahead:

Thursday, 05/17: Cygnus OBT, Post EVA Ops (A/L deconfg/restow, EMU Water recharge, debrief), Team Task Switching, HXP2 Sample stow, HRF samples, Ku cable swap.

Friday, 05/18: JSL Lab & Node 2 router configuration, WRM water balance, SABL3 Relocate, HXP2 Sample attach 3, BEAM ingress for EHS sample collect and WTS sensor troubleshooting.

Saturday, 05/19: Weekly Housekeeping, Crew Off-Duty

QUICK ISS Status – Environmental Control Group: