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摘要

This SAIB is to notify owners, operators, and repair facilities of Lycoming engines of the possible failure of engine thru-studs, and/or cylinder mounting studs. The concern is not an unsafe condition that would warrant AD action. The FAA received reports from an aviation authority of another country identifying cylinder mounting studs that failed on Lycoming engines due to the absence of protective cadmium plating on the studs. One report concerned a No. 2 cylinder that had separated from the crankcase after failure of the mounting studs. This resulted in damage to the surrounding crankcase and a failed connecting rod. Of the eight studs that secured the cylinder to the crankcase prior to failure, four were lost with the case and cylinder.
机译:该SAIB旨在将发动机通孔螺柱和/或气缸安装螺柱可能发生故障的情况通知莱康明发动机的所有人,操作员和维修设施。所关注的不是不安全的情况,可以保证采取反倾销措施。美国联邦航空局(FAA)从另一个国家的航空当局那里收到报告,指出由于在螺柱上缺少保护性的镉镀层,导致在Lycoming发动机上出现汽缸螺柱的故障。一份报告涉及一个2号气缸,该气缸在安装螺柱失效后与曲轴箱分离。这会损坏周围的曲轴箱并损坏连杆。在发生故障之前将气缸固定到曲轴箱的八个螺栓中,四个丢失了壳体和气缸。

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  • 来源
    《Light Plane Maintenance》 |2014年第6期|3-3|共1页
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