It also can cooperate with acars system to provide data for oil consume analyse and technique evaluate , etc . this article discuss the working principle and realization of airplane flight safety real time monitor system , the core technology of real time database ( tplus tree index ) in detail , etc . while decoding module is one of the key modules , this article also introduces a high efficiency and easy extending qar data decoding arithmetic , the design and apply to background database , and the relative data load method in this module 本文对飞机飞行安全状态实时监控系统的工作原理、实时数据库的关键技术( tplus树索引)和飞机飞行实时监控系统的实现等,进行了详细的探讨。由于译码模块是该系统的核心模块之一,同时本文也介绍了一种高效的可扩展的qar数据译码平台的设计和实现,以及后台数据库的设计和应用。同时本文也介绍了高效的数据导入的方法以及数据库的性能优化。