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外部案例

有反应报告说，当飞机在顶起状态处于“空中”状态时。当“在空中”时，客户发现MFD功能被禁用，因此无法进入MFD和工作步骤，客户怀疑在任务之前应该有其他步骤，先使用PSEU并将a/c置于“地面”状态。波音表示MFD维护功能不可进入，当飞机在空中状态时。波音拟对对施工步骤程序做调整，以满足在顶升时，可以执行操作测试。

Question:

“…reported that when a/c on jack and the a/c is “in air”. When “in air”, customer found that the MFD function is inhibited, so they cannot enter MFD, and the work step…, customer suspects there should be other steps before the task, to use PSEU and put a/c “on ground”.”

Answer:

Boeing confirms that the MFD maintenance function is not accessible while the airplane is on jacks due to being “in air” mode.

Boeing advises customer to perform the operational test while not on jacks at this time while Boeing re-evaluates the procedure while on jacks. Boeing will send a follow-on message when an updated procedure for the operational test on jacks is available.