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A significant number of aviation incidents is related to loss of control in flight and controlled flight into terrain (LOC-I, CFIT, LALT categories). Investigation of these aviation incidents has revealed that these incidents often occur due to the need for rapid changes in flight routes as a result of detecting obstacles, such as thunderstorms, along the aircraft's path. During the determination of alternative routes to circumvent the encountered obstacle, as well as during the implementation process of the chosen rerouted route, the flight crew makes errors due to increased psycho-physiological workload and time constraints. This article presents an approach to the automatic rerouting of the aircraft's flight route to avoid obstacles detected during flight. The algorithm proposed by the authors allows for evaluating the safety of the original route, calculating alternative route options to bypass the obstacles encountered during flight, verifying their feasibility considering the aircraft's flight technical characteristics and control parameter limitations, and selecting the optimal rerouted route based on specific criteria, such as minimizing the increase in the flight route length, reducing additional fuel consumption, time required for implementing the new flight route, etc. Examples of rerouting the flight route of a hypothetical aircraft with detected obstacles along the flight path are provided in the article to demonstrate the algorithm's functionality. It is shown, in particular, that in the considered example, the shortest route for obstacle avoidance is not optimal in terms of time. It is also demonstrated that the safety of flying along the identified alternative rerouted routes depends, among other factors, on the selected flight speed. Therefore, for each calculated rerouted route, the algorithm determines a range of speeds within which the implementation of the obtained rerouted route is possible. This highlights the complexity and non-triviality of the pilot's task of autonomously finding a safe obstacle avoidance route on board the aircraft.

In order to solve the tasks of increasing capacity of the air traffic service sectors (ATS), it is planned to use a number of measures to regulate air traffic flows at the stages of strategic and pre-tactical planning. In practice, the application of such measures is ineffective due to the deviation of the parameters of actual flights from those stated when submitting flight plans. The purpose of this study is to identify the main problems in the air traffic planning organization for the subsequent proposal of measures to improve the regulation of air traffic flows and prevent conflict situations at the stages of strategic and pre-tactical planning. To achieve this goal, the key documents of air traffic planning were analyzed, the analysis of flight parameters at different stages of planning was conducted on the example of the Moscow Area Center of the Unified Air Traffic Management System (UATMS). The review of the key documents regulating air traffic planning in the Russian Federation and the ICAO recommendations shows difficulties in coordinating and exchanging information between the parties concerned in the Russian Federation airspace management. Deviations from the schedule during the aircraft arrival/departure are calculated using the example of Domodedovo Airport. The number of submitted and canceled applications for the airspace management (ASM) during the air traffic planning in the Moscow Area Center of the UATMS is analyzed. The conducted studies allow us to draw up a conclusion about the state of the air traffic planning system and justify the inexpediency of detecting and preventing conflict situations at the stage of pre-tactical planning. The research revealed the obvious shortcomings of air traffic management in the Russian Federation, which can have a significant negative impact on the safety and economic efficiency of aircraft flights.

The article considers the problems of permit and notify regimes of airspace use of the Russian Federation on the basis of jurisprudence, and application of Art. 5 of the Chicago convention.