一、前言航班延误一直是困扰各国民航业的难题。在造成飞机延误的所有原因中,由于航空公司自身原因造成飞机延误的比例为50%以上。因此,提高正点率就成为各航空公司树立市场形象、提高服务质量的主要任务之一。为了提高航班正点率,中国民航总局于7月1日发布了《民航总局对国内 I. INTRODUCTION Flight delays have always been a problem that plagues civil aviation in all countries. Among all the causes of aircraft delays, the proportion of aircraft delays due to the airline’s own reasons was more than 50%. Therefore, improving the punctuality rate has become one of the major tasks of establishing the market image and improving the quality of service for all airlines. In order to improve punctuality, China Civil Aviation Administration released on July 1 "Civil Aviation Administration of China