“…We selected these tasks because of their recurrence and representativeness among other maintenance tasks of the helicopter and plane, particularly, regarding the parameters of posture, gestures, and effort. Various studies in the aviation field have confirmed the interest of the engine part in performing HFE analysis (Amundarain et al, 2003; Dmitriev, Burlakov, Popov, & Popov, 2015; Geng et al, 2013), particularly because of the variability of tasks and work postures (Lockett & Arvanitopoulos-Darginis, 2017; Lu, Zhou, & Li, 2015; Shi & Liu, 2012). In addition, the tasks selected in our study are included as part of regular and mandatory maintenance activities—the most frequent task (Task 1), which is performed every week, and the least frequent task (Task 7), which occurs once a month.…”