This paper dealt with FMEA, which is a method of the analysis to secure safety and confidence coming up to customers' expectation in consideration of the environment of the corporation, the industrial environment, and the functional improvement. And by using FMEA, We showed the example analyzed the confidence of the Air Supply System. It was proved by the result of the analysis that the rate of the breakdown which is usually regarded as the first important point to reform can't satisfy the selecting basis to improve. Also the result said that it is not right to depend on only the rate of the failure in making the list of the reform. Through the analysis of the breakdown, FMEA can present the important factors of the reform to improve the confidence of the system. In this study would show the important factors of the improvement in order to product the goods guaranteed confidence through the method of FMEA.

Abstract
 1. 서론
 2. FMEA의 기본개념
  2.1 FMEA전개와 실시목적
  2.2 FMEA의 실시대책과 절차
 3. 공기공급 시스템의 신뢰성 분석
  3.1 공기공급 시스템의 구조
 4. 고찰 및 결과
 5. 결론
 참고문헌

• 배춘익(경남정보대학 기계설계학과) | C. I. Bae