Based on the traditional safe life method

studies on verification process and certification factors of airworthiness of approved life for aero-engine life-limited parts were conducted. Airworthiness requirements and compliance of advisory circular for life-limited parts were taken as a guide

and management methods of life-limited parts life determination in the general specification for aero-engine were used as a reference. The process and methods of the airworthiness compliance verification were given by calculation analysis and experimental verification. The criterion of life-limited parts was studied using typical civil aero-engines. The key technologies of the calculation and analysis verification for approved life of life-limited parts were given from the criterion

the processing of load spectrum and stress analysis of their structural dangerous points. The key technologies of the experimental verification were given by obtaining the experimental conditions

scheme of experimental temperature

experimental overstress factor and scatter factor. A method of guidance is provided for the airworthiness certification of approved life for aero-engine life-limited parts. The proposed methods provide an important reference for Civil Aviation Administration of China to draw up airworthiness advisory circular of aero-engine life-limited parts.