STS-134: EVA-1 complete – Focused Inspection confirmed on TPS damage

Endeavour’s flight crew have completed the mission’s first EVA, focusing on MISSE experiment swap outs and ammonia jumper line installations. Meanwhile, engineers on the ground poured over imagery data from FD-3′s RPM (R-bar Pitch Maneuver) which helped engineers identify a debris impact area on Endeavour which will require a Focused Inspection (FI) during FD-6 (Saturday).

Upon repressurizing the Quest Airlock (where Drew Feustel and Greg Chamitoff spent the night) from its overnight 10.2 psi campout pressure, the spacewalking duo enjoyed a brief hygiene break before re-entering the airlock which was promptly depressurized back to 10.2 psi.

Spacesuit purge was then conducted about two hours after the completion of this hygiene break, and spacesuit pre-breathe commenced shortly after the spacesuit purge was complete.

Following ISS crew wake up, depressurization of the crew lock got underway. Once the crew lock was depressed, the outer hatch was opened and Feustel and Chamitoff took their spacesuits to battery power – officially beginning the EVA.

After exiting the ISS, Feustel and Chamitoff spent about 20mins setting up their various tools. Then, Feustel translated to the MISSE (Materials on ISS Experiment) 7 experiment and removed it from its current location on the Space Station and replace it with the MISSE 8 experiment.

During this time, Chamitoff translated over to the P3 truss where he worked on installing a light onto the CETA cart. After this, Chamitoff translated across the ISS’s Integrated Truss Structure to the Starboard SARJ (Solar Alpha Rotary Joint), where he installed a cover in the SARJ cover 7 position.

Meanwhile, at the tail-end of Chamitoff’s work on the SARJ, Feustel translated over to the P3/P4 truss and began work on ammonia jumper line installation.

Feustel then move on to install another ammonia jumper across the P5/P6 truss while Chamitoff stowed the P4 ammonia jumper.

Feustel next moved on to install the P6 EAS jumper before the spacewalking team tackled the Lab EWC antenna operation. However, due to a problem with Chamitoff’s CO2 sensor, 45 minutes-worth of the task has been moved to EVA-3′s timeline.

Feustel and Chamitoff split up and worked on mating various P3/P4 and P1/P2 connections for the duration of the EVA, which was the last task of the EVA.

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