波音737飞机关于延迟更换风蚀损伤TCAS天线的技术问题说明

HNAT737技术问题说明提示单编号撰写校对批准/日期TIP737-2022-34-016吴坤恒余泳兵曾品/2022.11.18标题关于延迟更换风蚀损伤TCAS天线的技术问题说明一、适用性737二、背景描述737机队在运行中频繁反映TCAS天线风蚀损伤情况，前期TSD已发布TA-MULT-00-2022-003R1《737机队部分天线的损伤标准说明》对TCAS天线风蚀或其他损伤进行说明。本文针对由于风蚀造成破损，但因航材保障或其他特殊原因无法第一时间更换TCAS天线进行说明。三、解释说明1.接报TCAS天线风蚀损伤时，应根据TA-MULT-00-2022-003R1《737机队部分天线的损伤标准说明》对风蚀损伤情况进行评估。评估结果需更换天线时，应安排更换天线。图1.TCAS天线2若因航材保障或其他特殊原因无法第一时间更换天线，确保系统工作正常的情况可参考波音SR给出的NTO,两天内完成更换天线。Based on the above analysis,we applied to Boeing for NTO:For the case that the protective finish of TCAS antenna is breached at the first time?1.Confirm that TCAS system works normally2.Record corrosion of TCAS antenna3.The TCAS antenna must be replaced within two days,and the antenna connector should be inspected indetail during the antenna is replaced,deal with the problems found in a timely manner.RESPONSEBoeing has No Technical Objection to keeping a TCAS antenna with a breached protective finish installed ona 737NG airplane for up to two days,provided that the TCAS system works normally and the antenna damageis recorded.图2.波音SR:4-56177482321/2