波音777飞机成功地投入民肮运营，标志着民用飞机计算机设计时代的到来，计算机应用软件在此扮演着越来越重要的角色。因此，在民用航空器适航审定过程中，适航审查人员需要作大量的关于软件的审查工作。我们知道《机载设备和系统合格审定中对软件的要求》（RTCA．·DO－178B） The success of the Boeing 777 aircraft in civilian operations marks the arrival of the computer-design age of civil aircraft, where computer applications play an increasingly important role. Therefore, airworthiness reviewers need to make a large amount of review of the software during the airworthiness certification of civil aircraft. We know the “Software Requirements for Airborne Equipment and Systems Certification” (RTCA · DO-178B)