{"id":9032,"date":"2024-08-18T20:20:05","date_gmt":"2024-08-18T12:20:05","guid":{"rendered":"https:\/\/tommykwan.com\/blog\/?p=9032"},"modified":"2024-08-18T20:36:32","modified_gmt":"2024-08-18T12:36:32","slug":"cost-index-ci","status":"publish","type":"post","link":"https:\/\/tommykwan.com\/blog\/aviation\/cost-index-ci\/","title":{"rendered":"Cost Index (CI)"},"content":{"rendered":"<div class=\"embed-container\"><iframe loading=\"lazy\" title=\"What is a COST INDEX and how AIRLINES use it?! Explained by &quot;CAPTAIN\u201cJOE\" width=\"1170\" height=\"658\" src=\"https:\/\/www.youtube.com\/embed\/6GBf1keuwhY?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe><\/div>\n<p>Also take reference:<\/p>\n<ul>\n<li><a href=\"https:\/\/skybrary.aero\/articles\/cost-index\">https:\/\/skybrary.aero\/articles\/cost-index<\/a><\/li>\n<li><a href=\"http:\/\/www.boeing.ch\/commercial\/aeromagazine\/articles\/qtr_02_10\/pdfs\/AERO_FuelConsSeries.pdf\">http:\/\/www.boeing.ch\/commercial\/aeromagazine\/articles\/qtr_02_10\/pdfs\/AERO_FuelConsSeries.pdf<\/a><\/li>\n<\/ul>\n<p>Cost Index is the <strong>ratio of all costs other than fuel and the fuel costs<\/strong>.<\/p>\n<p>The<strong> lower<\/strong> the <strong>CI<\/strong>, the more &#8220;importance&#8221; the machinery places on <strong>saving fuel<\/strong>. Low cost indexes will result in lower climb speed, (both indicated and mach), lower cruise speed, a generally higher cruise altitude, a later descent and a slower descent mach\/speed. The higher CI&#8217;s will result in the opposite.<\/p>\n<p>In a boeing published article, it mentioned that CI is the ratio : (Time cost ~ $\/hr) \/ (Fuel cost ~ cents\/lb)<\/p>\n<p>&nbsp;<\/p>\n<p>Summary:<\/p>\n<ul>\n<li>Cost Index (CI) = Flying costs other than fuel \/ Fuel costs<\/li>\n<li>CI is a<strong> function of both fuel and nonfuel costs<\/strong>, it is important to use it appropriately to gain the greatest benefit. Indeed, CI is useful to manage operating costs.<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Also take reference: https:\/\/skybrary.aero\/articles\/cost-index http:\/\/www.boeing.ch\/commercial\/aeromagazine\/articles\/qtr_02_10\/pdfs\/AERO_FuelConsSeries.pdf Cost Index is the ratio of all costs other than fuel and the fuel costs. The lower the CI, the more &#8220;importance&#8221; the machinery places on saving fuel. Low cost indexes will result in lower climb speed, (both indicated and mach), lower cruise speed, a generally higher cruise altitude, a<a class=\"read-more \" href=\"https:\/\/tommykwan.com\/blog\/aviation\/cost-index-ci\/\" title=\"Read More\"> <span class=\"button default\">Read More<\/span><\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[64],"tags":[],"class_list":["post-9032","post","type-post","status-publish","format-standard","hentry","category-aviation"],"_links":{"self":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/9032","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/comments?post=9032"}],"version-history":[{"count":5,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/9032\/revisions"}],"predecessor-version":[{"id":9037,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/posts\/9032\/revisions\/9037"}],"wp:attachment":[{"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/media?parent=9032"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/categories?post=9032"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/tommykwan.com\/blog\/wp-json\/wp\/v2\/tags?post=9032"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}