At the present moment one of priority directions of the development of modern aviation is the increase of periods of aviation equipment safe operation. Conducting on-ground static and fatigue strength tests of aviation equipment and its components with the use of various methods of nondestructive testing (NT) is a necessary condition both for the certification of the new equipment and for the prolongation of the time of the operation of planes and helicopters already in use. As it is known, fatigue cracks in combination with metal corrosion are the principal causes of the formation of multi-center damages and the rise of catastrophic failures, which present the most danger in the process of the operation of aviation units. Therefore in the process of conducting fatigue tests it is important at the earliest stage to register the rise of fatigue failures and to control their development in the future. Well worked-out and widely used NT methods, such as ultrasound, eddy-current, capillary, magnetic ones and others, have a number of shortcomings making difficult or impossible the use of those in a number of practical cases. Such shortcomings are, for example, the necessity of access to the surface under control, the influence of operational and technological factors upon the resolution of the methods, labor intensity of those. Most disadvantages inherent in the traditional methods of NT, may be overcome by way of using a perspective NT testing method – acoustic emission (AE) method. The AE method allows to discover with great veracity structure defects and fatigue faults on hard-accessible sections of the unit and to keep a watch on the development of those during both fatigue testing and the operation. Using AE method, it is possible to discover defects at the early stage of the development as well as classify the damages by danger extent. However, it is rather difficult to use AE method in practice as energy level and principal characteristics of the useful signal depend significantly on properties of the material, and defect progress process is, as a rule, accompanied by noises having characteristics close to those of AE signal.