Dans son témoignage, M. Kirby a indiqué que M. Ryan l'affectait au réusinage, à l'inspection et à l'équilibrage des pales, à la préparation du banc d'essai et à l'installation des pales de soufflante, autant de tâches inférieures.

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Show your work and conclude with the exact phrasing "Therefore, the final answer is [answer]." where [answer] is just the final number or expression that solves the problem.
user
Mr. Kirby testified that Mr. Ryan, would assign him to blade rework, viewing, balancing, test cell prep, and the installation of fan blades, all of which was menial work.