| dc.description.abstract | This master thesis presents a model for measuring High Reliability Organization (HRO) maturity and analyzes the dimension of the impact on safety, in the context of rotary wing aircraft units of emergency services in Brazil. These units have been identified as HRO because, on the one hand, they are able to withstand dangerous events, but, on the other hand, they maintain reliable performance. High Reliability Organizations operate in environments with iterative complexity and prone to failure. However, they present characteristics to reduce the incidence of errors. These characteristics are five: 1) preoccupation with failure, 2) reluctance to simplify, 3) sensitivity to operations, 4) commitment to resilience, and 5) deference to expertise. The measurement of these characteristics scales the HRO maturity. The objective of the study was to propose a model for analyzing the relationship between HRO maturity and safety. For this, structural equation modeling was used for confirmatory factor analysis (CFA). The equation was dimensioned from a study previously applied in HRO and adjusted to the research context. The AFC was applied to empirically validate the observable variables and the factors indicated by the HRO characteristics. Thus, the results pointed to the existence of an adjusted model to measure HRO maturity. Subsequently, the dependency technique by logistic regression was applied between HRO maturity and safety. The results partially supported the research hypothesis, indicating that only the HRO characteristic of deference to expertise was identified as a significant and positive variable to explain safety. The HRO characteristic of sensitivity to operations indicated a significant but negative relationship, indicating the need for future studies. The others HRO characteristics did not present significant relationships. | en |
