Air transport is considered to be the safest means of transport. However, if an accident occurs, it often ends in catastrophe. Thus, significant efforts have been paid to sustain successful operations in aviation. Several studies have been carried out to understand the underlying reasons for accidents. This study used Fault Tree Analysis (FTA), Failure Mode and Effects Analysis (FMEA) and Causal Analysis based on Systems Theory (CAST) methods to analyse Tenerife aircraft accident and to compare the findings of different methods. The findings showed that while all three methods provided some overlapping findings, the CAST method led to the identification of all causes that were identified by other methods. Considering the nature of the causal factors, FMEA provided more causal factors that are related to organisation and technology than FTA. This study indicates that CAST has a significant value to identify all causes that can be identified by the use of traditional methods.

Ergonomic risk analysis REBA Assembly work Musculoskeletal diseases Work-related diseases Ergonomics is a group of multidisciplinary studies that investigate and improve the compatibility of humans with the machine and the environment by examining the physical, environmental and psychological risk factors. The primary purpose of ergonomics is to ensure employee health and safety, and increase work efficiency (such as reduced idle capacity, increased production, increased product quality). Because employing workers in a healthy and safe condition enables an increase in work efficiency. In this study, ergonomic risk analysis was selected on the production line of an enterprise with the REBA method and suggestions for improvement were included. The working cluster consists of 30 unskilled workers on the production line. As a result of the analysis, 66.6% of the production process is at medium risk and 33.4% is at high risk. After the improvement works to be done, it is expected that ergonomic risks would reduce and an increase in production and efficiency.