U.S. Extravehicular Activity (EVA) #41: EV1 Kimbrough and EV2 Whitson completed the following tasks during today’s 7 hour 3 minute External (EXT) Enhanced Processor and Integrated Communications (EPIC) Multiplexer/Demultiplexer (MDM) / Shields Installation EVA. During the final translation back to the airlock, Whitson’s Helmet Light Assembly came loose from her helmet. Kimbrough was able to tether to a bracket on the assembly, disconnect the electrical connections, and fully remove the Helmet Light Assembly to assist in ingress.

Planned Tasks

Zenith EXT EPIC MDM R&R

PMA3 Connect

PMA3 Cover Removal

Node 3 Axial Shields Install Forward Zenith, Forward Nadir, Forward Aft were completed. During preparation for install, one of four of the axial shields was lost. The Aft Zenith location was shielded with the PMA3 cover. The lost shield is forward of ISS with a retrograde component and there is good confidence that it will phase out of the ISS plane.

PMA 3 Cummerbunds Install

Get-ahead Task

N2 Common Berthing Mechanism (CBM) Inspection and partial cleaning Took photos of contamination sites #4 and #38 Cleaned contamination at site #4 and took post cleaning photos



Mobile Servicing System: The Robotics Ground Controllers powered up the MSS and used the Space Station Remote Manipulator System (SSRMS) for video support of the EVA #41. The Ground Controllers then maneuvered the SSRMS to a stow configuration which also provided additional views for the Node 2 Nadir Common Berth Mechanism (CBM) cleaning activity. MSS performance was nominal.

Sally Ride Earth Knowledge Acquired by Middle Schools (EarthKAM): This morning the crew successfully installed and activated the EarthKAM payload in the Node 2 nadir hatch window. Science operations using the EarthKAM setup will begin next week, marking the beginning of the 57th EarthKAM mission. This session includes over 200 schools in more than 50 countries around the world and is scheduled to last through April 9. This is a NASA education program that enables thousands of students to photograph and examine Earth from a space crew’s perspective. Using the Internet, the students control a special digital camera mounted on-board the ISS. This enables them to photograph the Earth’s coastlines, mountain ranges and other geographic items of interest from the unique vantage point of space. The team at Sally Ride EarthKAM then posts these photographs on the Internet for the public and participating classrooms around the world to view.

Today’s Planned Activities

All activities were completed unless otherwise noted.

LAB BelAir Wireless Access Points (WAPs) Powerdown and Disconnect

ISS HAM Radio and Video Power Down

EVA COTS UHF Communication Unit (CUCU) Verify off

USOS Window Shutter Close

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

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

EarthKAM Node 2 Setup and Activation-Russian

ISS Crew departure preparation

PROBIOVIT Experiment Ops

Filling Water Container No.3

Extravehicular Mobility Unit (EMU) Purge

Hardware prepack for return and disposal on Soyuz 732

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

Crewlock Depress

Crewlock Egress

EPIC MDM Remove and Replace

PMA3 Connections

PMA3 Cover Removal

Node 3 Axial Shields Install

Video Recording of Greetings

Download of BRI log from RSS1

PILOT-T. Preparation for the experiment

Hardware prepack for return and disposal on Soyuz 732

PILOT-T. Experiment Ops

PMA3 Cummerbunds Install

Extravehicular Activity (EVA) Get Ahead Tasks

CONTENT. Experiment Ops

Crewlock Ingress

EVA Glove Photo Setup

Crewlock Repress

Extra Vehicular Activity (EVA) Post-EVA Activities

Internal Audio Subsystem (IAS) EVA Communication Deconfiguration

EVA Glove Photo Downlink

Photo/TV EVA Camera Disassembly

Crew Discretionary Event

Metal Oxide (METOX) Regeneration Initiation

Photo/TV Extravehicular Activity (EVA) GoPro Downlink

LAB BelAir Wireless Access Point (WAP) Connect Power Cable and Power ON

Completed Task List Items

None

Ground Activities

All activities were completed unless otherwise noted.

EVA #41 support

EXT MDM Checkout

Three-Day Look Ahead:

Friday, 03/31: Crew departure prep, EVA debrief/cleanup

Saturday, 04/01: Crew off duty, housekeeping

Sunday, 04/02: Crew off duty

QUICK ISS Status – Environmental Control Group: