Possibility of Aircraft Electrical Equipment Diagnostics by the Local Load Control Units

This article describes the practical experience of using local load control units for diagnostics and monitoring condition of airborne electrical power consumers in an unpowered status. Considering that integrated power supply circuits contain aging components, preventive testing of these circuits may prevent malfunction of power consumers. Diagnostics described in this article are based on analysis of frequency response of loads and definition of special diagnostic points of the frequency response.