Abstract
In order to ensure the integrity of the structure, it is important to determine the actual loads that act on individual elements and their influence on fatigue life. The article demonstrates how to determine the fatigue life of selected elements of the Mi-24 helicopter. In addition, the work indicates the potential location of damage. In calculations, the actual levels of loads acting on the elements during the flight were used. The entire test was performed using the numerical analysis, which greatly helped reduce the time of the project. Fatigue life was determined using the MSC. FATIGUE program with the Palmgren - Miner linear damage accumulation rule.