Departamento de Ciências Aeroespaciais
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Browsing Departamento de Ciências Aeroespaciais by advisor "Baltazar, Maria Emília da Silva"
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- Safety Risk Assessment Methodologies – The Hi Fly operator casePublication . Luís, Paulo Sérgio dos Santos; Silva, Jorge Miguel dos Reis; Baltazar, Maria Emília da Silva; Sousa, Carlos Silvano deThis dissertation arises due to the constant growth of the aviation industry and increased exposure to hazards and risks. This increase causes the growing need to create, implement and improve risk management systems by air operators, airports, and maintenance organisations to ensure the safety of operations, passengers, crews, and staff. This dissertation focuses on choosing a risk analysis method most suitable for Hi Fly. The method must comply with all legislation in force and standards imposed by Hi Fly. To this end, a literature review of risk analysis methods suitable for aviation was carried out. This analysis begins by describing the risk management system proposed by the International Civil Aviation Organisation. Then, each risk analysis method's process, structure, and objectives are described; a multi-criteria decision analysis is used, specifically the MACBETH methodology (Measuring attractiveness by a categorical-based evaluation technique) To choose the most suitable method for Hi Fly's operations. The first phase of the application of this technique consists of the creation of key performance areas and performance indicators. From these, the second phase consists of creating a survey for the Safety Links in each department and the members who make up the Safety department, where the questions are adapted so that the answer offers a rating scale. It is asked to rank each key performance area by its relevance and to answer each question on a scale of one to five. As the Safety department is more familiar with the existing risk analysis methods, another survey is made to compare each method for each indicator. The last phase involves assigning weights to the key performance areas according to their average relevance. The evaluation is done through the M-MACBETH software tool, designed to perform the MACBETH methodology. This evaluation provides the most suitable method for Hi Fly's operations. The survey results of the various departments show that the most relevant area in a risk analysis is the ability to predict the impact and severity of the event and the creation of mitigating barriers and controls. The survey of the Safety department confirmed the result described above. As for the indicators, the results differ, but both agree that the least relevant indicator is the frequency and quality of the updates that the methods receive. This data defines the weights entered in the software and, together with the judgement made between the indicators for each method by the two specialists in the Safety department, satisfies the criteria necessary for using the decision support software. Using the data entered, the tool dictated that the risk analysis method best suited to Hi Fly's operations is the European Risk Classification System (ERCS).