{"id":53342,"date":"2025-08-05T19:48:50","date_gmt":"2025-08-05T19:48:50","guid":{"rendered":"https:\/\/freeflysystems.com\/?post_type=kb_article&#038;p=53342"},"modified":"2025-08-05T19:48:50","modified_gmt":"2025-08-05T19:48:50","slug":"astro-sb011-ntrip-and-rtk-communications-loss","status":"publish","type":"kb_article","link":"https:\/\/freeflysystems.com\/knowledge-base\/astro-sb011-ntrip-and-rtk-communications-loss","title":{"rendered":"Astro SB011 &#8211; NTRIP and RTK Communications Loss"},"content":{"rendered":"<p dir=\"ltr\"><b>Date Released: <\/b>August 5, 2025<\/p>\n<p dir=\"ltr\"><b>Subject: <\/b>Astro SB011 \u2013 NTRIP and RTK Communications Loss<\/p>\n<p dir=\"ltr\"><b>Effectivity: <\/b>Immediate<\/p>\n<p dir=\"ltr\"><b>Required Action:<\/b> Urgent &#8211; Aircraft should not be flown with NTRIP or RTK until a corrective firmware is installed.<\/p>\n<p dir=\"ltr\"><b>Affected Part Numbers:<\/b> All Astro<\/p>\n<p dir=\"ltr\"><b>BACKGROUND<\/b><\/p>\n<p dir=\"ltr\">Freefly has identified a Linux driver issue on the Skynode companion computer that can interrupt the USB\/serial connection to the flight controller when high-rate RTK or NTRIP correction packets arrive.<\/p>\n<p dir=\"ltr\">Symptoms:<\/p>\n<ul>\n<li dir=\"ltr\" value=\"1\">Auterion Mission Control (AMC) will display \u201cConnection Lost.\u201d<\/li>\n<li dir=\"ltr\" value=\"2\">Pilot Pro will continue to show correct flight mode and GPS status.<\/li>\n<li dir=\"ltr\" value=\"3\">Stick inputs remain live\u2014pilots retain full control.<\/li>\n<\/ul>\n<p dir=\"ltr\"><b>OPERATIONAL IMPACT<\/b><\/p>\n<ul>\n<li dir=\"ltr\" value=\"1\">Can occur during any RTK or NTRIP-based flight.<\/li>\n<li dir=\"ltr\" value=\"2\">Pilots may lose situational awareness.<\/li>\n<li dir=\"ltr\" value=\"3\">Use of NTRIP can also cause shifts in the GPS position which can trigger the issue mentioned in SB010.<\/li>\n<li dir=\"ltr\" value=\"4\">PPK workflows unaffected: All post-processed kinematic (PPK) data-collection methods remain fully supported and are not impacted by this issue, providing an alternative to RTK for certain use cases.<\/li>\n<\/ul>\n<p dir=\"ltr\"><b>RECOMMENDATION<\/b><\/p>\n<p dir=\"ltr\">Aircraft should not be flown with NTRIP or RTK until a corrective firmware is installed.<\/p>\n<ol>\n<li dir=\"ltr\" value=\"1\">Disable the NTRIP app on Skynode (if installed)<\/li>\n<li class=\"walu__nestedLi\" dir=\"ltr\" value=\"2\">\n<ol>\n<li dir=\"ltr\" value=\"1\">Connect Astro to PC and navigate to <a dir=\"ltr\" href=\"http:\/\/10.41.1.1\/apps\">http:\/\/10.41.1.1\/apps<\/a><\/li>\n<li dir=\"ltr\" value=\"2\">If you have an NTRIP app installed, press on its gear icon, then delete.<\/li>\n<li dir=\"ltr\" value=\"3\">Reboot<\/li>\n<\/ol>\n<\/li>\n<li dir=\"ltr\" value=\"2\">Do not use the RTK base station<\/li>\n<li dir=\"ltr\" value=\"3\">A separate service bulletin will provide upgrade details and reauthorize RTK and NTRIP use.<\/li>\n<\/ol>\n","protected":false},"template":"","class_list":["post-53342","kb_article","type-kb_article","status-publish","hentry","support_category-astro","support_category-astro-service-bulletins"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v24.7 (Yoast SEO v26.0) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Astro SB011 - NTRIP and RTK Communications Loss - Freefly Systems<\/title>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/freeflysystems.com\/knowledge-base\/astro-sb011-ntrip-and-rtk-communications-loss\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Astro SB011 - NTRIP and RTK Communications Loss\" \/>\n<meta property=\"og:description\" content=\"Date Released: August 5, 2025 Subject: Astro SB011 \u2013 NTRIP and RTK Communications Loss Effectivity: Immediate Required Action: Urgent &#8211; Aircraft should not be flown with NTRIP or RTK until a corrective firmware is installed. 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