ESA announced that astronaut Sophie Adenot is scheduled to conduct her third spacewalk on Tuesday 1 September, during an operation designated EVA-99. The agency's notice was published on 28 August.

The planned spacewalk follows two earlier ones. According to ESA, Adenot completed EVA-97 on 18 August and EVA-98 on 25 August. For the second, she worked alongside NASA astronaut Anil Menon, and ESA reported that EVA-98 ended at 20:57 CEST that day, describing it as the 32nd spacewalk conducted by a European astronaut.

ESA has not yet reported the outcome of EVA-99. The agency's summary places Adenot's third spacewalk in the sequence of her earlier outings and counts it within the tally of spacewalks by European astronauts.