Investigation of the Causes of Malfunctions of AI-25TL Gas Turbine Engine

The article analyzes the causes of malfunctions of the AI-25TL gas turbine engine based on statistical materials from its maintenance in the Bulgarian Air Force. The creation of perfect and highly economical aviation engines is inevitably associated with maintaining operating modes close to the limits of stability and strength with an optimal combination of many parameters. The complexity of fulfilling these conditions comes from the need to ensure high efficiency and reliability of aviation engines in a wide range of altitudes and flight speeds, while maintaining their operational characteristics and operating modes. Ensuring high reliability of aviation engines in the process of operation is a complex task, which arises from the diversity of factors affecting reliability, the accounting of which is often difficult due to their random nature. In this regard, in the process of operation of the AI-25TL gas turbine engine, significant attention is paid to studying the causes of the occurrence, development and possible consequences of specific malfunctions.