국내 헬리콥터 사고 및 준사고의 임무유형, 비행단계 및 사고유형 간 연관성 분석
Analysis of Associations among Mission Type, Flight Phase, and Accident Type in Korean Helicopter Accidents and Serious Incidents
This study analyzed 40 helicopter accidents and serious incidents that occurred in Korea from 2005 to 2022, based on final investigation reports published by the Aviation and Railway Accident Investigation Board. Mission type, flight phase, and accident type were classified into five, four, and four categories, respectively. Because of the small sample size and sparse contingency tables, r×c Fisher’s exact tests and Cramér’s V were applied. Significant associations were found between mission type and flight phase (p=0.009), mission type and accident type (p=0.029), and flight phase and accident type (p=0.016), with Cramér’s V ranging from 0.425 to 0.432. Aerial-application accidents were concentrated in low-level mission phases and mainly involved collision or external-work-related events, while water-impact accidents occurred during water-approach operations. The results suggest that helicopter safety management and training should consider mission type and flight phase together.
목차
Abstract 1. 서론 2. 연구방법 2.1 분석대상 2.2 분석변수 및 코딩기준 2.3 분석방법 3. 연구결과 3.1 분석대상의 일반적 특성 3.2 임무유형과 비행단계의 관계 3.3 임무유형과 사고유형의 관계 3.4 비행단계와 사고유형의 관계 3.5 수면 관련 사고의 특성 4. 논의 4.1 특수임무와 저고도 운항의 관계 4.2 항공방제 및 호버 · 저고도 임무의 특성 4.3 통계적 연관성과 효과크기의 해석 4.4 수면 접근 및 수면 상공 비행 4.5 안전관리 및 교육훈련 시사점 4.6 연구의 한계 5. 결론 References