Aircraft Engines Maintenance Costs and Reliability: An Appraisal of the Decision Process to Remove an Engine for a Shop Visit Aiming at Minimum Maintenance Unit Cost

Dissertação apresentada como requisito parcial para obtenção do grau de Mestre em Estatística e Gestão de Informação.

The decision to remove an aircraft engine for SV is not a deterministic process. The decision is taken under conditions ok risk or uncertainty and some subjectivity. In this document it is presented a case study using a decision tree to decide the best time to remove an engine with high FH since last SV. This case study and the answers from engine experts to a questionnaire about the decision process provide information that may assist to decide how to optimize engine time on-wing.