Ground handling work performance is an important part of the civil aviation flight cycle. Well-functioning safety management for minimizing the risk for accidents is vital and dependent on the safety culture. This article reports on a safety culture assessment of a ground handling company using a multiplex approach method. The study is included in the establishment of reference data concerning safety culture aspects in different transport branches. The results of the assessment reveal a generally good existing safety culture. However, the safety culture is somewhat poorer than that estimated and desired by the managers and that in other transport branches.