{"id":5471,"date":"2026-06-15T14:24:41","date_gmt":"2026-06-15T06:24:41","guid":{"rendered":"https:\/\/caucanimax.com\/blog\/?p=5471"},"modified":"2026-06-15T16:21:53","modified_gmt":"2026-06-15T08:21:53","slug":"question-about-athr-soft-mode-mode-change-condition","status":"publish","type":"post","link":"https:\/\/caucanimax.com\/blog\/question-about-athr-soft-mode-mode-change-condition\/","title":{"rendered":"A350 A\/THR SOFT \u6a21\u5f0f\u6fc0\u6d3b\u6761\u4ef6\u7684\u95ee\u9898"},"content":{"rendered":"<p>\u611f\u8c22\u540c\u4e8b\u7684\u95ee\u9898\u3002<\/p>\n<p><a href=\"https:\/\/caucanimax.com\/blog\/question-about-athr-soft-mode-mode-change-condition\/question-about-athr-soft-mode-mode-change-condition_image_1\/#main\" rel=\"attachment wp-att-5472\"><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-5472\" src=\"http:\/\/caucanimax.com\/blog\/wordpress\/wp-content\/uploads\/2026\/06\/Question-About-ATHR-SOFT-MODE-Mode-Change-Condition_image_1.png\" alt=\"\" width=\"1668\" height=\"796\" srcset=\"https:\/\/caucanimax.com\/blog\/wordpress\/wp-content\/uploads\/2026\/06\/Question-About-ATHR-SOFT-MODE-Mode-Change-Condition_image_1.png 1668w, https:\/\/caucanimax.com\/blog\/wordpress\/wp-content\/uploads\/2026\/06\/Question-About-ATHR-SOFT-MODE-Mode-Change-Condition_image_1-300x143.png 300w, https:\/\/caucanimax.com\/blog\/wordpress\/wp-content\/uploads\/2026\/06\/Question-About-ATHR-SOFT-MODE-Mode-Change-Condition_image_1-1024x489.png 1024w, https:\/\/caucanimax.com\/blog\/wordpress\/wp-content\/uploads\/2026\/06\/Question-About-ATHR-SOFT-MODE-Mode-Change-Condition_image_1-768x367.png 768w, https:\/\/caucanimax.com\/blog\/wordpress\/wp-content\/uploads\/2026\/06\/Question-About-ATHR-SOFT-MODE-Mode-Change-Condition_image_1-1536x733.png 1536w\" sizes=\"auto, (max-width: 1668px) 100vw, 1668px\" \/><\/a><\/p>\n<p>DSC-22-FG-50-50 C A\/THR SOFT MODE \u4e2d\u63d0\u5230 A\/THR SOFT \u6a21\u5f0f\u7684\u6fc0\u6d3b\u6761\u4ef6\u5305\u62ec\uff1a<\/p>\n<blockquote><p>The speed\/Mach control has not changed from managed to selected mode during the last 10 min<\/p><\/blockquote>\n<p>\u90a3\u4e48\uff0c\u4ee5\u4e0b\u4e24\u79cd\u60c5\u51b5\u90fd\u7b26\u5408\u8fd9\u4e2a\u6761\u4ef6\u4e48\uff1a<\/p>\n<ol type=\"1\">\n<li>10 \u5206\u949f\u4e4b\u5185\u4e00\u76f4\u662f\u7ba1\u7406\u6a21\u5f0f\uff0c\u6ca1\u6709\u8f6c\u6362\u4e3a\u9009\u62e9\u6a21\u5f0f<\/li>\n<li>\u5df2\u7ecf\u8f6c\u6362\u6210\u4e3a\u4e86\u9009\u62e9\u6a21\u5f0f\uff0c\u4f46\u8fd9\u4e2a\u8f6c\u6362\u662f\u5728 10 \u5206\u949f\u4e4b\u524d\u5b8c\u6210\u7684<\/li>\n<\/ol>\n<p><!--more--><\/p>\n<p>\u7a7a\u5ba2\u56de\u590d\u662f\uff0c\u5728\u5176\u4ed6\u6761\u4ef6\u90fd\u6ee1\u8db3\u7684\u60c5\u51b5\u4e0b\uff0c \u201c10 \u5206\u949f\u5185\u4e00\u76f4\u662f\u7ba1\u7406\u6a21\u5f0f\u201d\u8fd9\u4e00\u60c5\u51b5\u662f\u7b26\u5408\u7684\u3002<\/p>\n<p>\u800c\u5982\u679c 10 \u5206\u949f\u4e4b\u524d\u8f6c\u6362\u5230\u4e86\u9009\u62e9\u6a21\u5f0f\uff0c\u4f46\u5728 10 \u5206\u949f\u5185\u6ca1\u6709\u6539\u53d8\u9009\u62e9\u7684\u901f\u5ea6\u76ee\u6807\u503c\uff0cA\/THR SOFT \u6a21\u5f0f\u4e5f\u4f1a\u91cd\u65b0\u6fc0\u6d3b\u3002\u8fd9\u4e00\u70b9 FCOM \u4e2d\u5230\u65f6\u6ca1\u6709\u8bf4\u6e05\u695a\u3002<\/p>\n<p>\u53e6\u5916\uff0c\u5173\u4e8e A\/THR SOFT \u6a21\u5f0f\uff0c\u5176\u5b9e 21 \u5e74\u4e4b\u524d\u5e76\u6ca1\u6709 10 \u5206\u949f\u8fd9\u4e00\u4e2a\u6761\u4ef6\uff0c\u662f\u5728\u5347\u7ea7\u4e86 FCGS Standard X13 \u4e4b\u540e\u662f\u4fee\u6539\u8fc7\u7684\uff0c\u4ee5\u6539\u5584\u98de\u673a\u5bf9\u98ce\u68af\u5ea6\u7684\u53cd\u5e94\u3002<\/p>\n<p>&nbsp;<\/p>\n<p><strong>TR-81779046 \u539f\u6587<\/strong><\/p>\n<p><strong>Q<\/strong><\/p>\n<p>DSC-22-FG-50-50 C A\/THR SOFT MODE \u4e2d\u63d0\u5230\uff1a<\/p>\n<blockquote><p>The speed\/Mach control has not changed from managed to selected mode during the last 10 min<\/p><\/blockquote>\n<p>\u8bf7\u95ee\u4ee5\u4e0b\u4e24\u79cd\u60c5\u51b5\u90fd\u7b26\u5408\u8fd9\u4e2a\u6761\u4ef6\u4e48\uff1a<\/p>\n<ol type=\"1\">\n<li>10 \u5206\u949f\u4e4b\u5185\u4e00\u76f4\u662f\u7ba1\u7406\u6a21\u5f0f\uff0c\u6ca1\u6709\u8f6c\u6362\u4e3a\u9009\u62e9\u6a21\u5f0f<\/li>\n<li>\u5df2\u7ecf\u8f6c\u6362\u6210\u4e3a\u4e86\u9009\u62e9\u6a21\u5f0f\uff0c\u4f46\u8fd9\u4e2a\u8f6c\u6362\u662f\u5728 10 \u5206\u949f\u4e4b\u524d\u5b8c\u6210\u7684<\/li>\n<\/ol>\n<p>\u4e5f\u5c31\u662f A\/THR SOFT MODE \u7684\u5fc5\u8981\u6761\u4ef6\u662f\u201c\u5fc5\u987b\u662f\u9009\u62e9\u901f\u5ea6\u201d\uff0c\u8fd8\u662f\u201c10 \u5206\u949f\u5185\u6ca1\u6709\u8f6c\u6362\u201d\uff1f<\/p>\n<p>As stated in DSC-22-FG-50-50 C A\/THR SOFT MODE:<\/p>\n<blockquote><p>The speed\/Mach control has not changed from managed to selected mode during the last 10 min<\/p><\/blockquote>\n<p>Do both of the following situations meet this condition?<\/p>\n<ol type=\"1\">\n<li>The mode has been in managed mode and has not switched to selected mode within the last 10 minutes.<\/li>\n<li>The mode has already switched to selected mode, but the switch was completed more than 10 minutes ago.<\/li>\n<\/ol>\n<p>In other words, is the necessary condition for A\/THR SOFT MODE that the speed must be in selected mode, or that there has been no switch within 10 minutes?<\/p>\n<p><strong>A<\/strong><\/p>\n<p>We confirm that <span style=\"color: red;\">both situations meet<\/span> the mentioned condition.<\/p>\n<p>In order to clarify, we would like to inform CSC that, as indicated in A350 FCOM DSC-22-FG-50-50-SPEED\/MACH Mode-A\/THR SOFT MODE, a design <span style=\"color: red;\">change<\/span> was introduced to improve the aircraft reaction to wind gradients with the <span style=\"color: red;\">FCGS Standard X13<\/span> installed in the entire CSC A350 fleet.<\/p>\n<p>With this new design, the A\/THR soft mode is inhibited for 10 minutes when the Speed\/Mach control is changed from \u201cManaged\u201d to \u201cSelected\u201d mode. This enables the A\/THR to react quicker to the speed variations.<\/p>\n<p>As a result, if the managed mode has been active for at least 10 minutes <span style=\"color: red;\">without switching to selected mode<\/span>, the A\/THR mode activates (i.e. provided that all the other activation conditions are met).<\/p>\n<p>If the flight crew selects the selected mode and keeps it for 10 minutes <span style=\"color: red;\">without changing the selected target speed<\/span>, then we confirm that the A\/THR soft mode <span style=\"color: red;\">reactivates<\/span>.<\/p>\n<p>Then, if the flight crew <span style=\"color: red;\">changes<\/span> the selected speed <span style=\"color: red;\">target<\/span>, the A\/THR soft mode <span style=\"color: red;\">deactivates<\/span>.<\/p>\n","protected":false},"excerpt":{"rendered":"<p>\u611f\u8c22\u540c\u4e8b\u7684\u95ee\u9898\u3002 DSC-22-FG-50-50 C A\/THR SOFT MODE \u4e2d\u63d0\u5230 A\/THR SO &#8230; <a title=\"A350 A\/THR SOFT \u6a21\u5f0f\u6fc0\u6d3b\u6761\u4ef6\u7684\u95ee\u9898\" class=\"read-more\" href=\"https:\/\/caucanimax.com\/blog\/question-about-athr-soft-mode-mode-change-condition\/\" aria-label=\"\u9605\u8bfb A350 A\/THR SOFT \u6a21\u5f0f\u6fc0\u6d3b\u6761\u4ef6\u7684\u95ee\u9898\">\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-5471","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","author_category":"","first_name":"","last_name":"","user_url":"http:\/\/laowudewo.com","job_title":"","description":""}],"_links":{"self":[{"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts\/5471","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=5471"}],"version-history":[{"count":4,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts\/5471\/revisions"}],"predecessor-version":[{"id":5476,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/posts\/5471\/revisions\/5476"}],"wp:attachment":[{"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/media?parent=5471"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/categories?post=5471"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/tags?post=5471"},{"taxonomy":"author","embeddable":true,"href":"https:\/\/caucanimax.com\/blog\/wp-json\/wp\/v2\/ppma_author?post=5471"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}