波音737飞机关于737MAX-FAMV更换的维护提示

关于737 MAX FAMV更换的维护提示编号编写人审核人日期K0MYS-2023-23李秋威朱红洲2023-11-07一、背景近期更换某737MAX飞机FAMW,因执行次数较少，且测试工具不匹配，导致耗时较长，为提升工作效率，特编写此提示。二、依据文件AMM36-12-03-000-801 Fan Air Modulating Valve RemovalAMM36-12-03-400-801 Fan Air Modulating Valve InstallationAMM36-00-00-710-801 Electrical LRU Replacement TestAMM36-12-00-720-801 36 Pneumatics,LRU Replacement Test,PneumaticEngine Off FAMV注：此测试需专用工具。AMM36-00-00-730-801 Pneumatic Engine On System Test注：此测试需试车，但无需专用工具。三、系统描述The fan air modulating valve (FAMV)controls the flow of fan air tothe precooler.(FAMV控制风扇气流到预冷器，类似预冷器控制活门)The FAMV is on top of the engine at 12 o'clock.It is attached tothe forward side of the precooler.(在发动机的I2点钟，安装预冷器前部)The FAMV is a butterfly valve,spring loaded to the open position.The valve is pneumatically operated and electrically controlled bythe IASC.(蝶形活门，弹簧加载在开位，气动操作，通过IASC电动控制)