{"id":3474,"date":"2020-07-06T23:00:28","date_gmt":"2020-07-06T15:00:28","guid":{"rendered":"http:\/\/caucanimax.com\/blog\/?p=3474"},"modified":"2020-07-10T18:53:58","modified_gmt":"2020-07-10T10:53:58","slug":"mistake-of-setting-side1and2isol-in-emer-evac","status":"publish","type":"post","link":"https:\/\/caucanimax.com\/blog\/mistake-of-setting-side1and2isol-in-emer-evac\/","title":{"rendered":"A350 \u7d27\u6025\u64a4\u79bb\u7a0b\u5e8f\u4e2d SIDE 1 & 2 ISOL \u8bbe\u7f6e\u63cf\u8ff0\u7684\u4e00\u70b9\u9519\u8bef"},"content":{"rendered":"

\"\"<\/a><\/p>\n

\u5c0f\u5b57\u5185\u5bb9\u8bf4\u5982\u679c\u4e4b\u524d\u6267\u884c\u4e86\u70df\u96fe\u7a0b\u5e8f\uff0c SIDE 1 & 2 ISOL \u4f1a\u88ab\u88ab\u8bbe\u7f6e\u5230 ON \uff0c\u5982\u679c\u6267\u884c\u540e\u9762\u5173\u8f66\u52a8\u4f5c\u5c31\u4f1a\u5bfc\u81f4 DC EVAC \u6c47\u6d41\u6761\u65ad\u7535\u3002\u4f46\u662f\u4ece\u7cfb\u7edf\u7ae0\u8282\u63cf\u8ff0\u6765\u770b\uff0cDC EVAC \u5e76\u4e0d\u4f1a\u65ad\u7535\u3002\u7a7a\u5ba2\u8bf4\u8fd9\u4e2a\u63cf\u8ff0\u786e\u5b9e\u6709\u95ee\u9898\uff0c\u5b9e\u9645\u4e0a\u5e94\u8be5\u662f DC EMER \u7f51\u7edc\u4e2d\u7684\u4e00\u4e9b\u5b50\u6c47\u6d41\u6761\u4f1a\u88ab\u5378\u8f7d\uff0c\u540e\u7eed\u4f1a\u4fee\u6539\u63cf\u8ff0\u3002\u5177\u4f53\u53c2\u8003 TechRequest \u539f\u6587\uff1a<\/p>\n

<\/p>\n

Q:<\/strong><\/p>\n

[ABN] MISC EMER EVAC<\/strong>
\n&<\/strong>
\n[QRH] EMER EVAC<\/strong>
\nIn the emergency evacuation follows the smoke procedure, why setting SIDE 1 & 2 ISOL pb-sw ON will cause DC EVAC busbar not electrically supplied? As the diagrams below, in emergency network, only AC EMER 1&2 will disconnect after setting SIDE 1 & 2 ISOL pb-sw ON.<\/p>\n

\"\"<\/a> \"\"<\/a><\/p>\n

A18:<\/strong><\/p>\n

In the SMOKE procedure, when the ELEC SIDE 1&2 ISOL pb-sw is set to ON, and the VFGs of one side are set to OFF, some specifics busbars of the DC EMER network of the side set to off are automatically shed. On those busbars, there are, among others, the emergency lighting system and some display units of the associated side.<\/p>\n

So, in the EMER EVAC procedure, if the ELEC SIDE 1&2 ISOL pb-sw is still set to ON when the ENG MASTERS are set to OFF, those systems will not be power supplied. As consequence, there will be no emergency light in the cabin for the passengers evacuation, and the flight crew will not have any more the MISC EMER EVAC procedure available as the display units will be off. It is therefore necessary to have the ELEC SIDE 1&2 ISOL pb-sw set to OFF before the engines are set to off, to keep those systems operating.<\/p>\n

We agree that the wording of the MISC EMER EVAC procedure line is not correct as it is not the DC EVAC busbar that is not power supplied during the SMOKE procedure, but another sub-busbar of the DC EMER network not mentioned in the FCOM. We will therefore update the comment of the following procedure line:<\/p>\n

\"\"<\/a><\/p>\n

The new comment will be:<\/p>\n

If the emergency evacuation follows the smoke procedure, the SIDE 1&2 ISOL pb-sw can be set to ON, and as a consequence some systems necessary for the emergency evacuation are not electrically supplied if the engines are off, such as the emergency lighting system, and the display units, among others.
\nFor more information, about the DC EVAC busbar, Refer to Emergency Network.<\/p>\n

This modification will be part of the next FCOM July revision. Thank you for your input.<\/p>\n","protected":false},"excerpt":{"rendered":"

\u5c0f\u5b57\u5185\u5bb9\u8bf4\u5982\u679c\u4e4b\u524d\u6267\u884c\u4e86\u70df\u96fe\u7a0b\u5e8f\uff0c SIDE 1 & 2 ISOL \u4f1a\u88ab\u88ab\u8bbe\u7f6e\u5230 ON \uff0c\u5982\u679c\u6267\u884c\u540e\u9762 … \u9605\u8bfb\u66f4\u591a<\/a><\/p>\n","protected":false},"author":2,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[113],"tags":[],"ppma_author":[5],"class_list":["post-3474","post","type-post","status-publish","format-standard","hentry","category-fly"],"authors":[{"term_id":5,"user_id":2,"is_guest":0,"slug":"yaoguai","display_name":"\u5996\u602a","avatar_url":"https:\/\/secure.gravatar.com\/avatar\/dfe71d09a1a83f49a02a4400c69ef2c361c2d967eae2ffeeb6318b73a0da763f?s=96&r=g","0":null,"1":"","2":"","3":"","4":"","5":"","6":"","7":"","8":""}],"_links":{"self":[{"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts\/3474","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/comments?post=3474"}],"version-history":[{"count":3,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts\/3474\/revisions"}],"predecessor-version":[{"id":3495,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts\/3474\/revisions\/3495"}],"wp:attachment":[{"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/media?parent=3474"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/categories?post=3474"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/tags?post=3474"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=3474"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}