针对可靠性分析中常用的故障分布,研究了故障数据分析的基本步骤及方法;应用某型飞机机队升降舵作动筒的故障数据,确定其分布模型为正态分布;结合计算机软件获得故障分布函数、故障密度函数等可靠性指标,确定其性能状况和故障趋势,提出了相应的维护维修建议. Aiming at the commonly used fault distribution in reliability analysis, the basic steps and methods of fault data analysis are studied. Fault data of the elevator cylinder of a certain type of aircraft fleet is determined and its distribution model is determined as normal distribution. Fault distribution is obtained by computer software Function, fault density function and other reliability indicators to determine the performance status and fault trends, put forward the corresponding maintenance and repair recommendations.