Aircraft safety assessment process enhanced by human factors aspects.
AUTOR(ES)
Beatriz de Melo Rodrigues
FONTE
IBICT - Instituto Brasileiro de Informação em Ciência e Tecnologia
DATA DE PUBLICAÇÃO
17/12/2007
RESUMO
Flight Safety is nowadays one of the concerns of global aviation community and is relevant to the survival of the aeronautical industry. In this context, expansion of human factors awareness presents a significant opportunity to make aviation safer, since the human / machine interface is a frequent source of error. This work analyzes the human interface with a specific aircraft system, i. e., the Gust Lock System of ERJ-145. The aim is to define a framework for developing a human error assessment process to mitigate the effects of human error, in the same way the system safety process mitigates the effects of system possible failures. From the system safety engineering standpoint, the human can be taken as part of the considered system. Then, functions that the human needs to perform in his interaction with the system can be identified. With this information, each human failure mode can be assessed critically and the human related failure effects along the system can be studied. This study can result in design changes or improvements that may minimize the effects of unacceptable human failure modes. Furthermore, it is discussed some points of the Safety Assessment conducted by EMBRAER, in order to identify possible deficiencies in the development of safety cases using classical safety analysis techniques as well as make suggestions for the enhancement of these techniques. According to this approach, an analysis of the calculation of the average probability per flight hour is condusted when there are latent events along the process. Besides, it is performed the sensitivity analysis of a component failure so as to identify technical bottlenecks and provide guidelines for effective actions to the system improvement. Finally, considerations regarding the susceptibility of each failure condition to human influence are also presented.
ASSUNTO(S)
engenharia de fatores humanos segurança do vôo sistemas homem-máquina análise de falhas sistemas de segurança engenharia aeronáutica
