This document contains psychometric data for an instrument that was used to measure safety climate, fatigue, stress, violations and errors in an aviation maintenance setting [Fogarty, G. J. & Buikstra, E. (2008). A test of direct and indirect pathways linking safety climate, psychological health, and unsafe behaviours. International Journal of Applied Aviation Studies, 8 (2), 199-210]. The document also contains the items used to form the various scales