A methodology of analysis and evaluation of the selected indices of the helicopter readiness used in the Polish Navy is presented in this paper. These objects are the multi-purpose helicopters of the Polish and Russian production, performing mainly the rescue tasks. A mathematical model was based on the source databases covering a period of 2 years, which were developed in the form of the multi-format MS Excel spreadsheets. While considering the operating environment and a specificity of the performed tasks, an event-based model of the operation process was proposed in this paper, which enables to evaluate selected indices of readiness. Due to the specificity of the individual types of renovations and repairs, the calculated measures of the readiness were enabled in a multi-faceted manner, that is, they were referred to three separate operating periods covering the current operating period, the entire (i.e. two-year) studying period including extended renovations and the entire studying period including extended renovations and repairs. A broader approach enabled to calculate the functional and technical indices of the readiness of the helicopter.
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