Research and practice of airworthiness clause risk assessment model

Airworthiness certification represents a highly complex amalgamation of technical and managerial activities, the risks of which have historically been challenging to assess and quantify directly. Drawing on fundamental concepts such as risk management and the “three principles” model of airworthiness certification, this paper proposes an innovative risk assessment method and model for airworthiness clauses. By reconstructing two evaluation dimensions—the capability dimension for airworthiness compliance and the cost dimension for clause compliance—this study breaks through the limitation that traditional risk assessment models cannot accurately assess complex technologies and management processes. It enables a systematic qualitative assessment of various internal and external factors, including capability, cost, management, and industry standards, thereby effectively identifying the main technical challenges and risks in airworthiness certification. The risk assessment process for the selected clause 25.963 is described, and, in conjunction with practical results from a specific model, the proposed method demonstrates feasibility in the risk assessment of airworthiness clauses.