In this work, the actual scientific and practical problem of modeling the technical state of the TV3-117 aircraft engine as a part of the helicopter power plant in the form of the Markov process of death and reproduction, the results of which are applicable in the form of a stochastic network of the GERT type (Graphical Eval-uation and Review Technique) for formalizing the behavioral activities of the heli-copter crew in emergency situations. The results obtained allow us to simulate the development of flight situations in the direction of complication and vice versa. The resulting information model for determining the failure of the TV3-117 air-craft engine is a graph of the standard deviations of the state vector of the proba-bilities of its state, obtained as a result of flight tests, with a graph for its ideal state.