Analysis of Use Reliability on Electrical Power System of Civil Aviation Training Planes

Safety and efficiency are the operational goals of civil aviation, while the plane system reliability is the fundamental guarantee. Failure records produced during operations are the sound bases to assess the plane reliability. Through reliability analysis, the evolution law of individual system function can be obtained and the related risk can be identified. As a result, plane safety can be guaranteed by taking relevant measures in designing, manufacturing and use. In this paper, main study is focused on electrical power systems in three models of training planes—Cessna 172R, Simenole and Cheyenne IIIA, which are widely used in certain civil aviation flight university. In order to analyze and calculate the life distribution and reliability indexes of electrical power systems of target planes, mass data were collected from the monitoring records of electrical power systems and components, as well as the failure and repairing records generated during training plane operations. The differences among the target planes regarding the failure rate and reliability of electrical power systems are also analyzed. In the end of the paper, types of frequent failures in electrical power systems are summarized, and related safety advices are provided.