维护提示 | MEL 21-05 空调冲压空气系统保留M项B737系列机务在线

ryn_82 发表于 2023-3-28 20:10:18

维护提示 | MEL 21-05 空调冲压空气系统保留M项

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   <span style="font-size: 15px;">简单记录一下，下次外站碰到可以参阅。</span>
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                        <strong style="outline: 0px;visibility: visible;">1</strong>
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               <strong style="outline: 0px;visibility: visible;">事件背景</strong>
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   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">某737-800飞机，反映再现右PACK灯亮，按压主警告能灭<span style="outline: 0px;letter-spacing: 0.544px;visibility: visible;">。地面PZTC自检发现有故障代码冲压进气作动器的故障代码：</span></span>
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   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;"><span style="outline: 0px;letter-spacing: 0.544px;visibility: visible;">无法直接VERIFY清除，按FIM 复位跳开关后自检还是无法清除代码：<br/></span></span>
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   <span style="font-size: 15px;color: #d92142;">▲</span><span style="font-size: 15px;">拨出 P6-4 B4/B9/B11，闭合B4后等至少10秒钟后再闭合B9/B11</span>
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   <span style="font-size: 15px;">排气门作动器上红色INLET ACTUATOR FAULT灯亮：<br/></span>
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   <span style="font-size: 15px;">检查发现右侧冲压进气门没有在全开位，排气门在全开位，且PZTC BITE测试时冲压空气进气和排气门都不会动，飞机上冲压门全开灯也不亮：<br/></span>
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   <span style="font-size: 15px;">计划按MEL 21-05保留放行。</span>
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                        <strong style="outline: 0px;visibility: visible;">2</strong>
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               <strong style="outline: 0px;visibility: visible;">MEL 21-05M项</strong>
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   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">MEL 21-05 的M项看着比较复杂，但是其实并不难：</span>
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<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">737NG空调组件冲压空气系统分为SRADA构型和非SRADA构型，SRADA构型外观主要差异就是多了一个排气门。<br/></span>
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   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">在MEL 有M项时，可以参考AMM章节最前面的DDG程序来完成。</span>
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   <span style="color:#3f3f3f;"><span style="font-size: 15px;">我们这里是办理保留，所以要参考MMEL 21-5 (DDPG) Preparation - Ram Air Modulating System Inoperative：</span></span>
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   <span style="color:#3f3f3f;"><span style="font-size: 15px;"></span></span><span draggable="true" style="color: #3f3f3f;font-size: 15px;outline: 0px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">进气门的M项<span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">SR</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">A</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">DA</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">构型</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">和非</span><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">SRADA构型是一样的，也比较简单。下面简单说明一下。</span><br/></span>
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   <span draggable="true" style="color: #3f3f3f;font-size: 15px;outline: 0px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;"><span style="color: #3f3f3f;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;font-size: 15px;letter-spacing: 0.544px;white-space: pre-line;background-color: #ffffff;">① 拨出相应的跳开关，拆开冲压进气门旁边的小盖板：</span></span>
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   <span style="font-size: 15px;">② 脱开并固定好电插头并安装堵盖。拆下作动筒杆与摇臂相连的螺钉，脱开作动筒后把螺钉原位装回摇臂：</span>
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<p style="margin-bottom: 0px;padding-right: 0.5em;padding-left: 0.5em;white-space: normal;letter-spacing: 2px;">
   <span style="font-size: 15px;"><span style="color: #333333;font-size: 15px;letter-spacing: 2px;text-decoration: none solid #333333;">④ 转动摇臂使其对准校装孔后将MLE工具箱中螺栓BACB30UU3P36D插入校装孔，安装螺母BACN10JD3和开口销BACP18BC01D06P，使用保险丝将作动筒杆端绑到摇臂上：</span></span>
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   <span style="font-size: 15px;"><span style="color: #333333;font-size: 15px;letter-spacing: 2px;text-decoration: none solid #333333;"><br/></span></span>
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   <span style="font-size: 15px;"><span style="color: #333333;font-size: 15px;letter-spacing: 2px;text-decoration: none solid #333333;">⑤ 对构型改变部位拍照，关闭盖板，闭合跳开关。</span></span>
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   <span style="font-size: 15px;"><span style="color: #333333;font-size: 15px;letter-spacing: 2px;text-decoration: none solid #333333;"><br/></span></span>
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   <span style="font-size: 15px;letter-spacing: 2px;text-align: justify;color: #d92142;">▲</span><span style="font-size: 15px;letter-spacing: 2px;text-align: justify;">电插头可以用塑料袋和胶带临时封堵</span>
</p>
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   <span style="font-size: 15px;">SRADA构型多了一个排气门，也需要将其失效在飞行开位。手册里给出两种方法：</span>
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<p style="margin-bottom: 0px;padding-right: 0.5em;padding-left: 0.5em;white-space: normal;letter-spacing: 2px;">
   <span style="font-size: 15px;">一种是使用作动器收藏连杆，件号C21009-1：</span>
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<p style="margin-bottom: 0px;padding-right: 0.5em;padding-left: 0.5em;white-space: normal;letter-spacing: 2px;">
   <span style="font-size: 15px;"></span>
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<p style="margin-bottom: 0px;padding-right: 0.5em;padding-left: 0.5em;white-space: normal;letter-spacing: 2px;">
   <span style="font-size: 15px;">咱们没有这种工具，所以采用手册中拆除冲压排气门作动器的方法：<br/></span>
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<p style="margin-bottom: 0px;padding-right: 0.5em;padding-left: 0.5em;white-space: normal;letter-spacing: 2px;">
   <span style="font-size: 15px;">拆除作动器后，固定好电插头并安装堵盖。然后拆除最前面的驱动杆上的螺栓、螺母和垫片：</span>
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<p style="text-align: left;padding: 0px 0.5em;">
   <span style="font-size: 15px;">注：正常最前面的驱动杆连接在第二个孔的位置上。</span><br/>
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<p style="margin-bottom: 0px;padding-right: 0.5em;padding-left: 0.5em;white-space: normal;letter-spacing: 2px;">
   <span style="font-size: 15px;">然后移动连杆使最前面的驱动杆与第一个孔对齐，安装好螺栓、螺母和垫片：</span>
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<p style="margin-bottom: 0px;padding-right: 0.5em;padding-left: 0.5em;white-space: normal;letter-spacing: 2px;">
   <span style="font-size: 15px;">此时排气格栅打开角度就给固定在大约56度的位置了。</span>
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   <span style="font-size: 15px;"><br/></span>
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   <span style="font-size: 15px;"></span>
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<p style="margin-bottom: 0px;padding-right: 0.5em;padding-left: 0.5em;white-space: normal;letter-spacing: 2px;">
   <span style="font-size: 15px;">原理其实就是最前面的连杆从正常位转接到最前面闲置孔位后，连杆装上角度相反，来达到锁定开度的。<br/></span>
</p>
<p style="margin-bottom: 0px;padding-right: 0.5em;padding-left: 0.5em;white-space: normal;letter-spacing: 2px;">
   <span style="font-size: 15px;"><br/></span>
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   <span style="font-size: 15px;"><br/></span>
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   <section style="margin-top: 10px;margin-bottom: 10px;outline: 0px;text-align: center;justify-content: center;display: flex;flex-flow: row nowrap;visibility: visible;">
         <section style="outline: 0px;display: inline-block;width: auto;vertical-align: top;min-width: 10%;flex: 0 0 auto;height: auto;border-bottom: 3px solid #d92142;border-bottom-right-radius: 0px;align-self: flex-start;visibility: visible;">
            <section style="margin-bottom: 10px;outline: 0px;font-size: 19px;visibility: visible;">
               <section style="margin-right: auto;margin-left: auto;outline: 0px;display: inline-block;border-width: 1px;border-style: solid;border-color: #f7f7f7;background-color: #f7f7f7;width: 1.8em;height: 1.8em;line-height: 1.8em;border-radius: 100%;font-size: 24px;color: #d92142;visibility: visible;">
                     <p style="outline: 0px;visibility: visible;">
                        <strong style="outline: 0px;visibility: visible;">3</strong>
                     </p>
               </section>
            </section>
         </section>
   </section>
   <section style="margin-bottom: 15px;outline: 0px;visibility: visible;">
         <section style="outline: 0px;color: #d92142;visibility: visible;">
            <p style="outline: 0px;text-align: center;visibility: visible;">
               <strong style="outline: 0px;visibility: visible;">维护提示</strong>
            </p>
         </section>
   </section>
</section>
<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">MEL 21-05 M项本身并不复杂，需要注意的是对于SRADA构型失效时，排气门和进气门需要同时执行失效M项，</span><span draggable="true" style="outline: 0px;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;"><strong>不能只失效其中一个</strong></span><span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">。因为排气门和进气门是配合一起工作的。</span>
</section>
<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">比如本例中，进气门故障，不能仅仅将进气门失效在飞行打开位，而是同时要把排气<br/></span>
</section>
<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;">这一点在AMM DDG程序中也有说明：</span>
</section>
<p style="text-align: center;padding: 0px 0.5em;">

</p>
<section style="margin-right: 8px;margin-left: 8px;text-indent: 0em;outline: 0px;font-family: system-ui, -apple-system, BlinkMacSystemFont, "Helvetica Neue", "PingFang SC", "Hiragino Sans GB", "Microsoft YaHei UI", "Microsoft YaHei", Arial, sans-serif;letter-spacing: 0.544px;background-color: #ffffff;white-space: pre-line;font-size: 18px;color: #404040;word-break: break-word;hyphens: auto;line-height: 2em;visibility: visible;">
   <span draggable="true" style="outline: 0px;color: #3f3f3f;font-size: 15px;text-decoration-style: solid;text-decoration-color: #3f3f3f;visibility: visible;"></span>
</section>
<p style="margin-bottom: 0px;padding-right: 0.5em;padding-left: 0.5em;white-space: normal;letter-spacing: 2px;">
   <span style="font-size: 15px;">另外需要提醒机组按MEL 21-05保留后，再现时相应PACK灯可能会亮，但是按压主警告能灭：<br/></span>
</p>
<p style="text-align: center;padding: 0px 0.5em;">

</p>
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   <section class="_editor" data-width="100%" style="margin-right: auto;margin-left: auto;font-variant-numeric: normal;font-variant-east-asian: normal;width: 573.889px;">
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               <section style="border-width: 3px;border-style: solid;border-color: #333333;">
                     <section style="padding: 5px;border-bottom: 3px solid #333333;display: -webkit-flex;color: #ffffff;background-color: #ffe750;">
                        <section style="width: 25px;height: 25px;transform: rotate(-45deg);">
                           <section style="margin-top: 10px;width: 25px;height: 4px;border-radius: 4px;background-color: #333333;">
                                 <br/>
                           </section>
                           <section style="margin-top: -14px;margin-right: auto;margin-left: auto;width: 4px;height: 25px;border-radius: 4px;background-color: #333333;">
                                 <br/>
                           </section>
                        </section>
                        <section data-width="100%" style="width: 490.911px;text-align: center;color: #fefefe;letter-spacing: 6px;font-size: 18px;" class="">
                           <p style="font-family: Optima-Regular, PingFangTC-light;">
                                 <br/>
                           </p>
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                        <section style="width: 45px;display: -webkit-flex;align-items: center;">
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                                 <br/>
                           </section>
                           <section style="margin-left: 8px;width: 14px;height: 14px;border-width: 4px;border-style: solid;border-color: #333333;border-radius: 50%;">
                                 <br/>
                           </section>
                        </section>
                     </section>
                     <section style="padding: 15px;line-height: 28px;" class="">
                        <p style="margin-right: 8px;margin-left: 8px;letter-spacing: 0.544px;">
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         </section>
   </section>
</section>
<p style="margin-right: 16px;margin-bottom: 0px;margin-left: 16px;padding-right: 0em;padding-left: 0em;white-space: normal;">
   <br/>
</p>
<section class="_editor" style="margin-bottom: 0px;padding-right: 0em;padding-left: 0em;white-space: normal;font-size: 16px;font-family: 微软雅黑;">
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         <section class="_editor" style="border-width: 0px;border-style: none;border-color: initial;">
            <section style="text-align: center;height: 50px;">
               <section style="margin-right: auto;margin-left: auto;width: 48px;height: 48px;color: #ffffff;line-height: 48px;display: inline-block;background-image: url("http://newcdn.96weixin.com/mmbiz.qlogo.cn/mmbiz_gif/yqVAqoZvDibElUrxgDE4QeKBff3ehKBcxKdGhmMbTCFtF1y4BYviab1IbDHuSvqYyrFUFdicSOrOMABzH2nfYVm0A/640?wx_fmt=gif");background-repeat: no-repeat;background-size: 100%;background-position: 0px center;background-color: #ffffff;" data-remoteid="c1679995922729">
                     <p style="font-weight: bold;">
                        完
                     </p>
               </section>
               <section style="margin-top: -26px;height: 2px;background-color: #222121;">
                     <br/>
               </section>
            </section>
         </section>
   </section>
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   <mp-style-type data-value="3"></mp-style-type>
</p>
</section>

wsltsg 发表于 2024-1-26 09:51:06

这还不复杂？

再见理想 发表于 2024-3-7 07:07:36

短停pack灯再现亮没有时间自检可以直接按温控系统保留么

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维护提示 | MEL 21-05 空调冲压空气系统保留M项