维护提示 MAINTENANCE TIPS: 背景: 当如果出现 PCU 或不明确的飞行操纵系统故障时,可使用 FCMP(Flight Control Maintenance Page)以获得更多的排故信息,因为在一些案例中较多的导线故障会直接影响 FCMP 的指示。因此 此 MT 给出了 FCMP 在几种状态下的基准参数,及一些排故案例,方便工作者了解如何使用 FMCP 并能快速确定故障原因及排故。 Background: If a PCU or ambiguous flight control fault is set, the FCMP may provide additional troubleshooting information because these faults are frequently wiring faults that in some cases impact FCMP indications. And this MT give out the standard parameter of FCMP in some situation and some troubleshooting case to help operator understand how to use FCMP for finding out the fault reason at a short time. 提示内容: Contents: 排除故障时使用 FCMP: Using the FCMP for Troubleshooting: 注意:以下说明是在 ACE(Actuator Control Electronics)有电的情况下。 NOTE: The following instructions assume all four ACEs have electrical power. 1、 图 1 – 液压系统打压情况下,无控制和配平输入,FCMP 各舵面 PCU 参数的标准范围。如果 PCU 的位置、力 压力差值不在标准范围内,飞机的线路或部件可能会存在故障。但有时系统激活时超范和一些线路故障可能会 隐藏。系统打压时使用 FCMP 进行分析比较困难。因此,建议在液压系统不打压的情况下分析 PCU 的线路故障 Fig 1 – With the hydraulic systems pressurized, no control inputs, FCMP every PCU parameters standard range. The PCU position, force, and delta pressure values should be within the expected ranges provided. If they are not, an airplane wiring or component wiring fault may exist. However, other faults may cause |