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最近有人问到关于FCOM中缺少部分飞机氧气面罩话筒测试程序的问题。
在之前的737NG FCOM 补充程序中，分别给出了MASK-BOOM电门和非MASK-BOOM构型飞机的氧气面罩话筒测试程序：
但是，在新的FCOM中，已经删除了带MASK-BOOM电门ACP构型飞机的机组氧气面罩话筒测试程序：
其实这个问题我之前就发现了，也咨询过厂家。
查看波音原版的FCOM，涉及到一个SB。咨询厂家后得知，这个SB是SB 737-23-1561，执行完这个SB后，会从FCOM的机组氧气面罩话筒测试程序中删除适用性：
SB 737-23-1561也就是加装卫星通讯系统。机队原出厂没有卫星通讯系统的飞机，后面都已经完成了此SB，进行了加装，所以这些飞机在FCOM中已经没有机组氧气面罩话筒测试程序了。
但是我看了一下这份SB，也就是更换了ACP面板和SELCAL面板，改了一些线路并加装SATCOM：
个人认为这些改动应该不至于会影响到机组氧气面罩话筒测试程序。
DESCRIPTION:
SB 737-23-1561 change the ACP and SELCAL panel to add SATCOM options. REF/A/ delete the effectivity for post SB 737-23-1561 configuration. My question:
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Why is REF/A/（FCOM SP1.7） no longer applicable to modified aircrafts?。
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If the crew needs to test the oxygen mask microphone on POST SB 737-23-1561 aircraft, how to test it?
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Why is the oxygen mask microphone test procedure in the FCOM different from the AMM?
RESPONSE:
A1-2// Thank you for bringing this issue to our attention. Boeing is in the process of restoring the Oxygen Mask Microphone Test procedure for the affected airplanes. We anticipate the change will be reflected in the next FCOM revision.
A3// The FCOM and AMM procedures are different because they serve different purposes and are performed by different personnel. The FCOM procedure is a quick check that the flight crew can perform as part of their standard span-flight routine. The AMM procedure is a scheduled maintenance task that is performed by maintenance personnel and takes more time to complete. The AMM procedure is more comspanhensive than the FCOM procedure and it checks more aspects of how the oxygen mask microphones operate with the flight interphone system. Because the AMM procedure is a scheduled task, it can have more time-consuming steps, such as the removal of the oxygen masks from their stowage boxes.
去年9月的SR，看了下，当前最新的FCOM SP1.7，Oxygen Mask Microphone Test程序还是没有修改，缺少了执行完SATCOM加装后的带MASK-BOOM电门ACP构型飞机的机组氧气面罩话筒测试程序。
有进一步信息再和大家分享吧。
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发表于 2021-4-9 18:42:13
