Abstract
The article reveals the issues of replacing spare serviceable devices (spare parts) for avionics objects for aircraft, discusses the organization and construction of supply chains, discusses the features of the functioning of avionics objects and their repair. The necessity of including blocks for modeling various scenarios of supply chains into the decision-making loop for the assembly and launch of spare devices is substantiated. Particular attention is paid to the classification of methods for calculating spare parts, based on the theory of restoration processes. The graphs of the function of increasing the functioning of avionics objects, graphs of the reliability of objects and graphs of forecasting the number of deliveries are given. The article discusses the possibilities of organizing supplies and their unique features. The necessity of modeling various delivery options and the limited data obtained on the basis of standard parameters, which include the technical reliability of the parameters of specific devices, are proved. Key words: SPTA, avionics, instrument, supply chain, aviation instrument reliability.
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