The research purpose for A Study on the Effect of Aviation Safety over the Air Passenger's Behaviour for enhancement of aviation safety management lies at the judgement that passenger's airlines selection criteria has much changed after several serious aviation accidents as before when we used to overlook "aviation safety " variable through surveying to Korean aviation passengers and foreignes visit or travel Korea on various purposes. Therefore, for this research, practical analysis methods are employed after surveing to actual passengers who use Kimpo International Airport's international and domestic terminals. This study will be regarded significant in terms that empirical analysis was used to prove "Aviation Safety", a variable which had not been regarded as a airline choice factor within Korea air ttransport market so far, and has an effect on the air passengers' airline preference change and choice after recent frequent aviation accidents. Presenting this desertation, I wish, it can be another opportunity for Korean two national flag airlines to reapraise and reinforce the segnificans of "aviation safety" and set forth immediate vigirous efforts to support the government's aviation safety.