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受疫情影响,全球大量飞机长时间停飞,飞机停放时间长了后,就涉及封存。
下面是GE刚刚发布的CFM56-7B和LEAP-1A发动机90天封存视频。
This video demonstrates proper maintenance procedure for 90 day engine preservation for a CFM56-7B engine. This video is for reference only. Always use the approved aircraft or engine manuals, as well as proper safety equipment, when performing engine maintenance.
This video demonstrates proper maintenance procedured for 90 day engine preservation for a LEAP-1A Engine. This video is for reference only. Always use the approved aircraft or engine manuals, as well as proper safety equipment, when performing engine maintenance.
视频仅供参考
实际维护中务必参考有效手册
以737NG为例,当前国内航空公司可能做90天(3个月)发动机封存的不多,通常都是做10天的封存:
然后以不超过10天的重复就行:
↑对于可用发动机,不超过10天的封存程序没有更新次数限制
发动机堵罩
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BBJ-2001-JB-SDP
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为了避免潮气导致腐蚀
对于长时间封存的发动机还需要涂抹防腐剂
当前很多公司都没有手册里要求的堵罩
基本上是采用塑料布包裹的方式
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为避免腐蚀,可在发动机前后放置干燥剂
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干燥剂规格:MIL-D-3464(硅酸盐干燥剂)
以防止在尾喷处留下冷凝水痕迹
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