Abstract

This article states one of the extravehicular activity (EVA) incidence that happened in NASA space station. It also highlights how NASA carefully considers checklists for the emergency repairs and EVAs. EVAs – spacewalks – are planned months, even years in advance. The astronauts who are scheduled to perform them spend hour upon hour practicing them in the controlled environment of the Johnson Space Center in Houston. Expedition 46 Commander Scott Kelly and Flight Engineer Tim Kopra successfully repaired the International Space Station's Mobile Transporter rail car during a three-hour and 16-minute spacewalk—the third for Kelly, and the second for Kopra. The smoothness of the EVA is a testimony to NASA’s ability to handle emergencies. The major lesson learned from the EVA is that a thorough worksite inspection checklist should be made to ensure crew do not leave ISS in a poor configuration after an EVA.

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