TOC (Theory of Constraints) is methodology for solving key problem in system which is called Constraints. Nowadays. it's application is going to be wide and it's concept is being implemented. This paper uses five focused steps of TOC for solving quality problem. especially, it analyses airline service quality through SERVQUAL and the constraints is showed in QFD (Quality Function Deployment) then the solution is suggested.

Abstract
 1. 서 론
 1.1 TOC란 무엇인가
 1.2 기존 문헌 고찰
 1.3 서비스 품질과 TOC
 2. 본 론
 2.1 TOC의 수행 단계
 2.2 TOC 기반의 서비스 품질 향상을 위한 QFD 활용
 3. 결론 및 추후 연구 방향
 참고문헌

• 박동연(한양대학교 산업공학과)
• 김계완(한양대학교 산업공학과)
• 윤덕균(한양대학교 산업공학과)