When designing complex organizational and technical systems, one of the main quality criteria is to meet the requirements for indicators characterizing the operational and technical level of the system. The task of substantiating these requirements has not been systematically approached. Requirements, most often, are presented empirically or using the apparatus of expert analysis. This is due to problems in the field of formalization of processes occurring in complex technical systems, difficulties arising in the construction of mathematical models and the development of criteria that allow optimizing information, technical, software, linguistic and other structures of ACS. The problem of substantiating the requirements should be solved using a systematic approach, and the whole set of properties, integral and partial indicators of the system should be taken into account. The study focuses on the approach to solving the problem of substantiating the requirements for reliability indicators of technical means of an organizational and technical system using the apparatus of continuous Markov processes. Time between failures and recovery time were used as reliability indicators. As a result, we found an analytical solution to the problem of substantiating the requirements for the reliability indicators of technical means and the characteristics of their performance, as well as the number of computer network workstations, necessary to meet the integral requirements for the ACS.

The paper introduces a methodological approach to optimizing the automated flight data preparation system design process by using organizational and technical measures to minimize the number of design errors and miscalculations of an accidental and deliberate nature. The study proposes to build the structure of the system design process according to the principle “from the general to the particular”, based on which the connections between different stages of design are determined in the form of surjective and bijective correspondences. In the diagram of design stages of the automated data preparation system, each lower level of the hierarchy is a decomposition of the elements of the adjacent upper level into more specific elements. The main methods of improving the quality of system design, methods of semantic control of the correctness of the design decisions, and syntactic control of the correctness of the developed documentation for the design of the automated data preparation system are proposed. The main thirteen problems of system design are considered, which, in practical application, will acquire a more specific form and significantly improve the designed system’s quality.

The paper introduces a new approach to substantiating the quality indicators of the elements of an automated aircraft flight data preparation system. The approach consists in solving the primary task of substantiating the so-called “simple requirements” imposed by the customer. The study examines the place this task takes in estimating the efficiency of the use of an aircraft grouping. The most general problem that determines this efficiency is to ensure that the grouping fulfills its tasks in a given quality. To solve the problem, we introduced the concept of aircraft information readiness. The study shows that the solution of the problem of estimating the quality of reachability and aircraft flight data preparation is reduced to the primary task of setting reasonable requirements for the quality of an automated data preparation system and methods to meet these requirements. However, the problem is hard to solve, as well as the general problem of ensuring the efficiency of the use of an aircraft grouping. The study proposes a general approach to substantiating the quality characteristics of the elements of an automated aircraft flight data preparation system. Among simple requirements, we singled out the verbal requirements related to the quality of the system’s output data. Relying on this approach, it is possible to develop a system whose quality indicators of the elements will correspond to the required values.