무인항공기 시스템의 개념 설계를 위한 기능 안전 관점에서의 위해요인 식별 및 안전 요구사항 도출: 영국 AAIB 무인항공기 시스템 사고조사보고서를 기반으로

With the 4th Industrial Revolution, the utilization of unmanned aircraft systems is increasing day by day in various fields. However, unmanned aircraft systems are vulnerable to functional errors due to their unique characteristics, such as remote control and automatic flight. In the event of an accident, the system operator and the general public may be injured, and the system manufacturer may be disadvantaged by the Product Liability Act. In addition, with the establishment of international standards related to risk management and functional safety, such as ISO/IEC/IEEE 16085, IEC 61508, and ARP4761, risk analysis and countermeasures have become essential when developing systems. It is time to ensure functional safety at the conceptual design phase to protect public safety and manufacturers' interests. This study reviews international standards to confirm the importance of identifying functional safety hazards and managing requirements. In addition, it also analyzes the accident investigation reports of the UK AAIB to identify hazards of unmanned aircraft systems and derive safety requirements.