One of the key tasks of ensuring the level of flight safety is providing a high reliability of radio electronic equipment. This equipment is designed to detect aircraft, determine their coordinates, and provide radio communication between the aircraft and the air traffic controller. The reliability of aviation radio equipment is determined at the stages of design and operation. At the same time, the main procedures include the following measures: the use of a highly reliable element base, the use of various types of redundancy of the structural components of the equipment, ensuring the efficiency of the main operational processes, and others. The processes that have a direct impact on the reliability of aviation radio equipment are monitoring and control of the technical condition, repair, making decisions on corrective and preventive actions based on collected statistical data, and others. This paper considers the problem of the repair procedures efficiency analysis, which includes the diagnostics and detection of failed structural units of equipment, restoration of serviceability, and measurement of diagnostic variables. Efficiency is considered from the point of view of minimizing the duration of repair procedures, their cost and labor intensity. In general, the method of calculating numerical values of efficiency indicators and their statistical characteristics is presented in the form of step-by-step instructions.