关于氮气发生系统降级工作灯亮的问题

一夜明 · 发表于 2017-7-3 15:51:27

航后检查发现降级灯亮了，故障点存在哪些地方？主要问题与热交换器有关么？

hutks · 发表于 2017-7-3 21:15:13

右边空调舱有个bdu进行测试，可以看到当前故障代码

newairport · 发表于 2017-7-3 22:14:41

840. Operability Indicator DEGRADED (Blue) Light is On - Fault Isolation

A. Description

(1) The operability indicator shows DEGRADED (blue light). The nitrogen generation system (NGS) is operating below normal

D. Initial Evaluation

(1) Do the electrical test in this task: NGS BITE - Procedure, 47-31 TASK 801.

(a) If the BDU message ELECTRICAL TEST PASS shows, then there was an intermittent fault.

(b) If a fault message shows, do the Fault Isolation procedure for the applicable fault message.

E. Fault Isolation Procedure

(1) No additional maintenance action is necessary

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[47氮气] 关于氮气发生系统降级工作灯亮的问题