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Modern aviation systems are complex hierarchical computing systems, coupled with a powerful periphery (digital board). The flight is performed with constant communication with ground control points and requires exchange of large amounts of data. The reliability of the systems providing flight can be violated due to equipment failures, human factor and external unauthorized exposure. The paper discusses the issues of guaranteeing the reliability of telemetry information transmission systems on the state of the aircraft and its systems based on artificial intelligence methods in terms of ensuring information security. The structure of the imitation stand is proposed to test the system for transmitting telemetric information about the state of on board airborne systems to the ground. The purpose of such system is to improve the efficiency of modelling and analysis of the system's security. 1. The first section in your paper Provision of dependability telemetric data transmission systems (TMI) is a primary goal of ensuring the efficient functioning of the aircraft. The application of technologies for monitoring the status of critical elements of the aircraft's design in real time will allow a full (operational and intelligent) analysis of the operational capability of the aircraft systems (LA), crew conditions and control of its actions in the ground control center. For example, the Bombardier jetliner was demonstrated at the Paris air show. It has a motor that is equipped with 5000 sensors, which generate up to 10 GB of data per second. A single twin-engine aircraft with an average 12-hour flight time can create up to 844 TB of data [1]. The arising malfunctions and failures of the on-board equipment can be diagnosed on the basis of the processed telemetric information. This allows experts of ground technical services to prepare for operational repair even before landing the aircraft. Accumulated and processed TMI will allow specialists to provide reasonable support for decision-making in the event of technical failure of aircraft units or modules. The possibility of transmitting TMIs on the actual state of individual modules to the manufacturer of aviation equipment units will make it possible to increase the operational efficiency of the aircraft in its normal state and in the event of failures, as well as when investigating incidents. For example, a study of ground-to-board communication systems showed that the ACARS system, despite its versatility and ubiquitous use, is vulnerable, and if it is hacked with ADS-B, an attacker can gain access to the flight control system, download flight plans and detailed commands [2].

Simulation modelling of the transmission system of the telemetric information on the status of the on-board aircraft status