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737NG专业交叉故障

飞机设计上是不分电子，机械的。但日常处理上，由于专业的限制带来一定知识屏障，初步梳理有以下故障是需要跨专业协同的。

序号章节故障现象可能故障原因
122YD无法衔接襟翼问题
222SPD LIM襟翼问题
323氧气面罩测试无气流声或不连续，麦克风正常氧气面罩盒问题
431发动机启动后FDR灯亮发动机运转继电器问题
531CDS FAULT故障信息发动机启动电门问题
632起落架构型警告RA问题
732PSEU灯亮RA问题
834AIRSPEED LOW襟缝翼问题
934GPWS INOP灯亮PSEU问题
1034左侧惯导故障静变流故障（P6-4 D15跳开关跳出）
1173发动机启动后EEC备用灯亮DEU问题
1273发动机控制灯亮TAT探头问题
1373EEC自检有总压、总温相关短时信息大气数据探头问题
1421设备冷却地面检查外部排气口不出气设备冷却排气活门问题

737MAX的IPC手册中的错误件号

SR#: 3-5145413622

MOM-MOM-21-0416-01B

波音在建立MAX IPC前期，基础源使用了NG手册。最近波音在梳理IPC时，发现有28个件是不通用，但已经在MAX的IPC中了。波音初始出厂是不会安装这些件号的，主要风险在运行中发料和更换。相关清单如下：

Part NumberPart DescriptionIPC Removal Date
116A8521-10TUBE ASSEMBLY – HOLD OPEN STRUT ASSY – REFUEL DOOR, OUTBD FIXED LE15-Sep-2021
116A8521-6TUBE ASSEMBLY – HOLD OPEN STRUT ASSY – REFUEL DOOR, OUTBD FIXED LE15-Sep-2021
116A8526-4LOCK – HOLD OPEN STRUT OUTBD FIXED LE15-Sep-2021
116A8527-2SPRING, TORSION – HOLD OPEN STRUT, OUTBD FIXED LE15-Sep-2021
141A6009-1FAIRING SNUBBER  PASSENGER DOOR15-Sep-2021
147A6146-1GATE ASSY – END, LOWER AFT DOORS15-Sep-2021
147A6146-2GATE ASSY – END, LOWER AFT DOORS15-Sep-2021
147A6146-7GATE ASSY – END, LOWER AFT DOORS15-Sep-2021
147A6146-8GATE ASSY – END, LOWER AFT DOORS15-Sep-2021
147A6516-1ENDGATE – UPPER AFT GALLEY DOOR15-Sep-2021
147A6516-3ENDGATE – UPPER AFT GALLEY DOOR15-Sep-2021
149A7110-3FRAME ASSEMBLY-UPR STRAKLET, FWD FAIRING15-Sep-2021
149A7110-4FRAME ASSEMBLY-UPR STRAKLET, FWD FAIRING15-Sep-2021
17335BELLOWS ASSEMBLY, APU FUEL SUPPLY15-Sep-2021
200-163-0001BELLOWS15-Sep-2021
232A4398-1BRACKET ASSY – FLIGHT KIT15-Sep-2021
271A2445-4FILTER ASSY15-Sep-2021
273A1401-1VALVE ASSY – VALVE MANIFOLD ASSEMBLY – NLG LOCK15-Sep-2021
300-535-1CONNECTOR OUTBOARD SPOILER PCA INT R C15-Sep-2021
346A2003-1GASKET,  DRAIN MAST – APU FUEL FEED, SECTION 4915-Sep-2021
66-19995-1WASHER-FLAT, STRUCTURE, GALLEY DOOR15-Sep-2021
69-40348-3RETAINER – TORQUE TUBE ASSY-ACTUATOR INPUT ELEVATOR CONTROL15-Sep-2021
69-42114-2FITTING – ATTACH  AFT GALLEY AND AFT ENTRY DOORS15-Sep-2021
69-42311-3LOCK – PRESSURE  FUEL BAY ACCESS DOOR  LE15-Sep-2021
90-7815-32CRANK ASSY15-Sep-2021
FB016730LAMP – HOLDER  LIGHT ASSY FWD AND AFT ENTRY LIGHTS15-Sep-2021
FB016-730LAMP15-Sep-2021
R1041300-004MONORAIL AY  FIRST OFFICER SIDE SUNVISOR INSTL15-Nov-2021

大风和沙尘天气特检的执行

每年春季大风和沙尘天气都会把特检工卡重新撸一遍，主要在于各航司解读。在2019年编写了SOP并获得各航司邮件批复后，这个疑问少了很多，但还是有相关疑问。整合疑问和波音的答复，有以下要点。

1，到底什么情况下需要执行特检 4-4417619877

The subject AMM conditional inspection is subjective. It is the operator’s responsibility to determine if the inspection is necessary when or after the aircraft has been exposed to the subject conditions.

2, 做什么样检查深度 3-3277500197

Boeing recommends that operators use their past experience to guide them in deciding whether or not an inspection is necessary, and the level of the inspections that are necessary. Boeings Extreme Dust/Sand Conditional Inspection criteria is a guide for operators to use when there are reports of sand intrusion and or extreme dust deposits on airplanes due to a wind storm. When operators are using Boeings Extreme Dust/Sand Conditional Inspection procedure and the careful documentation of the outcome can be used to further establish a baseline of Hainan Airlines own inspection.

3，停放的飞机需不需要做 3-4335252938

The dirt environments are areas with extreme dust or sand condition. Please note, that datum AMM Section 05-51-27/201 is written for cases where it was confirmed that the airplane was exposed directly to sand/dust during sand or dust storms. In general we recommend that operators use their past experience to guide them in deciding whether or not an inspection is necessary, and the level of the inspections that are necessary. If the environmental event is sufficient to create the possibility that static ports, pitot tubes, or other locations listed in the conditional extreme dust/sand inspection procedure to be reported to have deposits of fine-grained calcareous silt or clay material, then Boeing recommends performing the conditional inspections. Please note, that subject procedure is also applicable to parked airplanes, which were affected by the sand storm. Intervals provided in the SUBTASK 05-51-27-200-004 are flight hours.

4，钢索发现扬尘后的检查 4-4338594668

Boeing Service Request System We recommend cleaning and relubricating the cables, pulleys and any operating mechanisms affected. HNA may wish to inspect the control cables after approximately 3 months and 6 months to ensure no further damage has occurred to the control cables. Exposure to dust and/or sand will cause contaminants to accumulate on the control cable grease. If not cleaned, this can lead to shortened cable life as wells as higher control forces and sluggish operation of the associated flight control system.

5，经历沙尘后的建议 3-3277500197

Because dust and sand are inert particles, they will not cause harm to exterior fuselage/wing structure/airplane skin. Boeing recommends removing the dust/sand as soon as possible so that it does not get ingested into the engines, the air distribution system, or other internal areas of the aircraft. Dust/sand that blows through the area may also contain contaminants that can lead to premature corrosion of certain areas if those contaminants are not removed promptly.

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