{"id":1997,"date":"2025-08-18T11:15:31","date_gmt":"2025-08-18T09:15:31","guid":{"rendered":"https:\/\/acriv.org\/WP\/?page_id=1997"},"modified":"2025-08-18T11:15:31","modified_gmt":"2025-08-18T09:15:31","slug":"%f0%9f%9b%a9%ef%b8%8fniveaux-de-vols","status":"publish","type":"page","link":"https:\/\/acriv.org\/WP\/%f0%9f%9b%a9%ef%b8%8fniveaux-de-vols\/","title":{"rendered":"\ud83d\udee9\ufe0fNIVEAUX DE VOLS"},"content":{"rendered":"<div class=\"wp-block-image\">\n<figure class=\"aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"653\" height=\"421\" src=\"https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/Regledelasemicirculaire-4.jpg\" alt=\"\" class=\"wp-image-1998\" style=\"width:527px;height:auto\" srcset=\"https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/Regledelasemicirculaire-4.jpg 653w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/Regledelasemicirculaire-4-300x193.jpg 300w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/Regledelasemicirculaire-4-465x300.jpg 465w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/Regledelasemicirculaire-4-310x200.jpg 310w, https:\/\/acriv.org\/WP\/wp-content\/uploads\/2025\/08\/Regledelasemicirculaire-4-150x97.jpg 150w\" sizes=\"auto, (max-width: 653px) 100vw, 653px\" \/><\/figure>\n<\/div>\n\n\n<p>Les <strong>niveaux de vol (FL)<\/strong> et la <strong>r\u00e8gle semi-circulaire<\/strong> sont fondamentaux en navigation a\u00e9rienne, car ils assurent la <strong>s\u00e9paration verticale<\/strong> entre avions. <\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83e\udded 1. R\u00e9f\u00e9rence de base<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Altitude<\/strong> (en pieds) \u2192 utilis\u00e9e <strong>sous l\u2019altitude de transition<\/strong> (calage QNH).<\/li>\n\n\n\n<li><strong>Niveau de vol (FL)<\/strong> \u2192 utilis\u00e9 <strong>au-dessus de l\u2019altitude de transition<\/strong> (calage 1013 hPa).<\/li>\n<\/ul>\n\n\n\n<p>\ud83d\udc49 Exemple : FL 65 = 6500 ft sur calage 1013.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\udd04 2. La r\u00e8gle semi-circulaire<\/h1>\n\n\n\n<p>Elle impose un <strong>niveau de croisi\u00e8re<\/strong> en fonction du <strong>cap magn\u00e9tique<\/strong> suivi (pas du cap compas ou de la route planifi\u00e9e).<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Caps 000\u00b0 \u2192 179\u00b0 (Est, Nord-Est, Sud-Est)<\/strong><br>\u2192 vols aux <strong>niveaux impairs<\/strong> (ex : 35, 55, 75, 95\u2026).<\/li>\n\n\n\n<li><strong>Caps 180\u00b0 \u2192 359\u00b0 (Ouest, Nord-Ouest, Sud-Ouest)<\/strong><br>\u2192 vols aux <strong>niveaux pairs<\/strong> (ex : 45, 65, 85, 105\u2026).<\/li>\n<\/ul>\n\n\n\n<p>\u26a0\ufe0f Ces niveaux s\u2019entendent <strong>au-dessus du plancher IFR\/VFR<\/strong> d\u00e9fini.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83c\udf24\ufe0f 3. En VFR<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>La r\u00e8gle semi-circulaire s\u2019applique <strong>au-dessus de 3000 ft ASFC<\/strong> (au-dessus du sol).<\/li>\n\n\n\n<li>Exemple :\n<ul class=\"wp-block-list\">\n<li>VFR au cap 090\u00b0 \u2192 FL 55 ou 75.<\/li>\n\n\n\n<li>VFR au cap 270\u00b0 \u2192 FL 45 ou 65.<\/li>\n<\/ul>\n<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u2601\ufe0f 4. En IFR<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li>M\u00eame principe semi-circulaire \u2192 permet la s\u00e9paration entre IFR.<\/li>\n\n\n\n<li>Mais l\u2019ATC (contr\u00f4le a\u00e9rien) assigne souvent directement les niveaux en fonction des routes et espaces a\u00e9riens.<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\u2708\ufe0f 5. S\u00e9paration verticale<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Standard ICAO :<\/strong> 1000 ft entre deux avions jusqu\u2019au FL 410.<\/li>\n\n\n\n<li>Au-dessus de FL 410 \u2192 2000 ft de s\u00e9paration (sauf espaces RVSM).<\/li>\n\n\n\n<li><strong>RVSM (Reduced Vertical Separation Minima)<\/strong> : entre FL 290 et FL 410 \u2192 s\u00e9paration r\u00e9duite \u00e0 1000 ft (autoris\u00e9 seulement si avion certifi\u00e9 et \u00e9quipage qualifi\u00e9).<\/li>\n<\/ul>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h1 class=\"wp-block-heading\">\ud83d\udcca 6. R\u00e9sum\u00e9 sch\u00e9matique<\/h1>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Caps Est (000\u2013179\u00b0)<\/strong> \u2192 niveaux impairs (FL odd).<\/li>\n\n\n\n<li><strong>Caps Ouest (180\u2013359\u00b0)<\/strong> \u2192 niveaux pairs (FL even).<\/li>\n\n\n\n<li><strong>VFR<\/strong> \u2192 +500 ft par rapport aux IFR pour s\u00e9parer les trafics (ex : VFR Est FL 55 au lieu de FL 50).<\/li>\n\n\n\n<li><strong>S\u00e9paration IFR<\/strong> : 1000 ft (jusqu\u2019au FL 410 en RVSM).<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>Les niveaux de vol (FL) et la r\u00e8gle semi-circulaire sont fondamentaux en navigation a\u00e9rienne, car ils assurent la s\u00e9paration verticale entre avions. \ud83e\udded 1. R\u00e9f\u00e9rence de base \ud83d\udc49 Exemple : FL 65 = 6500 ft sur calage 1013. \ud83d\udd04 2. La r\u00e8gle semi-circulaire Elle impose un niveau de croisi\u00e8re en fonction du cap magn\u00e9tique suivi (pas du cap compas ou<\/p>\n<p><a class=\"more-link\" href=\"https:\/\/acriv.org\/WP\/%f0%9f%9b%a9%ef%b8%8fniveaux-de-vols\/\">Read More<\/a><\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-1997","page","type-page","status-publish","hentry"],"jetpack_sharing_enabled":true,"_links":{"self":[{"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/pages\/1997","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/comments?post=1997"}],"version-history":[{"count":1,"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/pages\/1997\/revisions"}],"predecessor-version":[{"id":1999,"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/pages\/1997\/revisions\/1999"}],"wp:attachment":[{"href":"https:\/\/acriv.org\/WP\/wp-json\/wp\/v2\/media?parent=1997"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}