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From the simulations room, where flight data is simulated and fed to the control room, Gustavo and his team have been challenging the Sentinel-2C control team with an exhaustive list of issues to solve, from errors injected in the data, to the loss of ground stations, absence of team members (simulated sickness), and instrument and transmission failures.
Some are common and anticipated, others require the mission control team to brainstorm and exercise the communication between many multidisciplinary teams, such as the flight control team, industry partners, flight dynamics, the ESA space debris office, mission control system software and the ground stations.