{"id":1872,"date":"2026-03-12T14:51:53","date_gmt":"2026-03-12T14:51:53","guid":{"rendered":"https:\/\/www.aeroatelier.aero\/?p=1872"},"modified":"2026-03-12T14:52:02","modified_gmt":"2026-03-12T14:52:02","slug":"avis-important-nouveau-bulletin-mandatory-lycoming-msb-667a","status":"publish","type":"post","link":"https:\/\/www.aeroatelier.aero\/en\/avis-important-nouveau-bulletin-mandatory-lycoming-msb-667a.html","title":{"rendered":"Important Notice: New Lycoming \u201cMandatory\u201d Bulletin (MSB 667A)"},"content":{"rendered":"\n<p class=\"wp-block-paragraph\">Le 12 mars 2026, Lycoming Engines a publi\u00e9 une r\u00e9vision majeure de son bulletin de service, le <strong><a href=\"https:\/\/www.lycoming.com\/publications\/service-bulletin-no-667\" target=\"_blank\" rel=\"noreferrer noopener\">MSB 667A<\/a><\/strong>, concernant le remplacement pr\u00e9ventif de certains axes de piston (Piston Pins).<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">De quoi s&rsquo;agit-il ?<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"p-rc_c51e5d75a101ed34-43\">Lycoming a d\u00e9termin\u00e9 que certains axes de piston \u00e0 paroi mince (<strong>P\/N LW-13445<\/strong>) fabriqu\u00e9s ou vendus entre le <strong>7 janvier 2021 et le 15 d\u00e9cembre 2025<\/strong> peuvent pr\u00e9senter des d\u00e9fauts de fabrication internes<sup><\/sup><sup><\/sup><sup><\/sup><sup><\/sup>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"p-rc_c51e5d75a101ed34-44\"><strong>Avertissement du fabricant :<\/strong> La d\u00e9faillance d&rsquo;un axe de piston peut causer une perte de puissance totale et impr\u00e9vue en plein vol<sup><\/sup>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Moteurs et pi\u00e8ces affect\u00e9s<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"p-rc_c51e5d75a101ed34-45\">Ce bulletin est <strong>mandatoire<\/strong> <sup><\/sup><sup><\/sup><sup><\/sup><sup><\/sup> et concerne :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Tous les moteurs Lycoming ou kit de cylindres utilisant des axes LW-13445 (05K21213-A, 05K21215-A, 05K21231, 05K21117, 05K23037, 05K23038, 05K23040, 05K29652).<\/li>\n\n\n\n<li>Les pi\u00e8ces de rechange (spares) LW-13445 dont le certificat 8130-3 est dat\u00e9 entre le 7 janvier 2021 et le 15 d\u00e9cembre 2025.<\/li>\n\n\n\n<li>Les s\u00e9ries de moteurs O-235, O-540 et IO-540 list\u00e9es dans les tableaux techniques du bulletin.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Ce qu&rsquo;A\u00e9ro Atelier fait pour vous<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Notre \u00e9quipe est d\u00e9j\u00e0 mobilis\u00e9e pour vous accompagner :<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Suivi personnalis\u00e9 :<\/strong> Nous dressons actuellement la liste compl\u00e8te de tous les moteurs sur lesquels nous avons travaill\u00e9 qui sont affect\u00e9s par ce bulletin.<\/li>\n\n\n\n<li><strong>Contact direct :<\/strong> Nous communiquerons personnellement avec chaque client concern\u00e9 pour discuter de la marche \u00e0 suivre et des options disponibles.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Responsabilit\u00e9s et logistique<\/h3>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Pr\u00e9cision importante :<\/strong> La conformit\u00e9 \u00e0 ce bulletin est \u00e0 la charge du propri\u00e9taire de l&rsquo;appareil. A\u00e9ro Atelier n&rsquo;assume aucun frais li\u00e9 \u00e0 ce remplacement \u00e9mis par Lycoming. Les travaux et pi\u00e8ces pour les moteurs hors garantie d&rsquo;usine sont \u00e0 la charge du client.<\/li>\n\n\n\n<li><strong>Disponibilit\u00e9 des pi\u00e8ces :<\/strong> Pour le moment, Lycoming n&rsquo;a pas pr\u00e9cis\u00e9 si l&rsquo;inventaire mondial est suffisant pour r\u00e9pondre imm\u00e9diatement \u00e0 la demande. Nous vous recommandons de mettre en quarantaine toute pi\u00e8ce LW-13445 inutilis\u00e9e faisant partie de la plage de dates vis\u00e9e.<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Prochaines \u00e9tapes<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\" id=\"p-rc_bd19593fd792dfa3-89\">Si vous poss\u00e9dez un moteur Lycoming (s\u00e9ries O-235, O-540 ou IO-540) entretenu chez nous depuis 2021, attendez notre appel. Si vous avez des doutes, n&rsquo;h\u00e9sitez pas \u00e0 nous contacter par courriel avec votre num\u00e9ro de s\u00e9rie moteur \u00e0 l&rsquo;adresse: <a href=\"mailto:support@aeroatelier.aero\">support@aeroatelier.aero<\/a><\/p>\n\n\n\n<div data-wp-interactive=\"core\/file\" class=\"wp-block-file\"><object data-wp-bind--hidden=\"!state.hasPdfPreview\" hidden class=\"wp-block-file__embed\" data=\"https:\/\/www.aeroatelier.aero\/wp-content\/uploads\/2026\/03\/SB667A20Piston20Pin20Replacement1.pdf\" type=\"application\/pdf\" style=\"width:100%;height:600px\" aria-label=\"Embed of SB667A%20Piston%20Pin%20Replacement[1].\"><\/object><a id=\"wp-block-file--media-678241c0-9000-45ab-b4a6-c5058437ba06\" href=\"https:\/\/www.aeroatelier.aero\/wp-content\/uploads\/2026\/03\/SB667A20Piston20Pin20Replacement1.pdf\">SB667A%20Piston%20Pin%20Replacement[1]<\/a><a href=\"https:\/\/www.aeroatelier.aero\/wp-content\/uploads\/2026\/03\/SB667A20Piston20Pin20Replacement1.pdf\" class=\"wp-block-file__button wp-element-button\" download aria-describedby=\"wp-block-file--media-678241c0-9000-45ab-b4a6-c5058437ba06\">T\u00e9l\u00e9charger<\/a><\/div>\n","protected":false},"excerpt":{"rendered":"<p>Le 12 mars 2026, Lycoming Engines a publi\u00e9 une r\u00e9vision majeure de son bulletin de service, le MSB 667A, concernant le remplacement pr\u00e9ventif de certains axes de piston (Piston Pins). De quoi s&rsquo;agit-il ? Lycoming a d\u00e9termin\u00e9 que certains axes de piston \u00e0 paroi mince (P\/N LW-13445) fabriqu\u00e9s ou vendus entre le 7 janvier 2021 [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":1874,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"disabled","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center 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