{"id":29163,"date":"2020-06-05T15:55:43","date_gmt":"2020-06-05T19:55:43","guid":{"rendered":"https:\/\/mjtsai.com\/blog\/?p=29163"},"modified":"2020-06-05T15:55:43","modified_gmt":"2020-06-05T19:55:43","slug":"bombardier-temperature-correction-bug","status":"publish","type":"post","link":"https:\/\/mjtsai.com\/blog\/2020\/06\/05\/bombardier-temperature-correction-bug\/","title":{"rendered":"Bombardier Temperature Correction Bug"},"content":{"rendered":"<p><a href=\"https:\/\/www.theregister.com\/2020\/05\/29\/bombardier_missed_approach_bug\/\">Gareth Corfield<\/a> (via <a href=\"https:\/\/news.ycombinator.com\/item?id=23347999\">Hacker News<\/a>):<\/p>\n<blockquote cite=\"https:\/\/www.theregister.com\/2020\/05\/29\/bombardier_missed_approach_bug\/\"><p>The <a href=\"https:\/\/ad.easa.europa.eu\/ad\/US-2020-10-05\">bug<\/a>, discovered on Bombardier CRJ-200 aircraft fitted with Rockwell Collins Aerospace-made flight management systems (FMSes), led to airliners trying to follow certain missed approaches turning right instead of left &#x2013; or vice versa.<\/p><p>[&#8230;]<\/p><p>Both companies disagreed with the FAA&rsquo;s directive when it was in draft format, arguing that a software fix would be easier to accomplish than banning the use of the automatic calculator.<\/p><p>[&#8230;]<\/p><p>Bugs in flight control software are rare, though not unknown. Most bugs in airliners tend to be unforeseen memory overflows, as both <a href=\"https:\/\/www.theregister.com\/2019\/07\/25\/a350_power_cycle_software_bug_149_hours\/\">Airbus<\/a> and <a href=\"https:\/\/www.theregister.com\/2020\/03\/04\/aviation_infosec_study_a320_systems_hack\/\">Boeing<\/a> have discovered over the years. A design formerly owned by Bombardier, the Airbus A220 (nee Bombardier C-series) suffered from <a href=\"https:\/\/www.theregister.com\/2019\/10\/25\/airbus_a220_engine_problems_software\/\">software-induced problems with its engines<\/a> last year, while the Boeing 737 was discovered to have a rare bug that completely blanked all cockpit displays if <a href=\"https:\/\/www.theregister.com\/2020\/01\/08\/boeing_737_ng_cockpit_screen_blank_bug\/\">pilots tried to land on one of seven specific runways in the world<\/a>.<\/p><\/blockquote>","protected":false},"excerpt":{"rendered":"<p>Gareth Corfield (via Hacker News): The bug, discovered on Bombardier CRJ-200 aircraft fitted with Rockwell Collins Aerospace-made flight management systems (FMSes), led to airliners trying to follow certain missed approaches turning right instead of left &#x2013; or vice versa.[&#8230;]Both companies disagreed with the FAA&rsquo;s directive when it was in draft format, arguing that a software [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"apple_news_api_created_at":"2020-06-05T19:55:46Z","apple_news_api_id":"b2e81aeb-e4da-4f3a-a42f-bfcf43458d05","apple_news_api_modified_at":"2020-06-05T19:55:46Z","apple_news_api_revision":"AAAAAAAAAAD\/\/\/\/\/\/\/\/\/\/w==","apple_news_api_share_url":"https:\/\/apple.news\/Asuga6-TaTzqkL7_PQ0WNBQ","apple_news_coverimage":0,"apple_news_coverimage_caption":"","apple_news_is_hidden":false,"apple_news_is_paid":false,"apple_news_is_preview":false,"apple_news_is_sponsored":false,"apple_news_maturity_rating":"","apple_news_metadata":"\"\"","apple_news_pullquote":"","apple_news_pullquote_position":"","apple_news_slug":"","apple_news_sections":"\"\"","apple_news_suppress_video_url":false,"apple_news_use_image_component":false,"footnotes":""},"categories":[2],"tags":[1198,131,71],"class_list":["post-29163","post","type-post","status-publish","format-standard","hentry","category-technology","tag-airplane","tag-bug","tag-programming"],"apple_news_notices":[],"_links":{"self":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/29163","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/comments?post=29163"}],"version-history":[{"count":1,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/29163\/revisions"}],"predecessor-version":[{"id":29164,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/posts\/29163\/revisions\/29164"}],"wp:attachment":[{"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/media?parent=29163"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/categories?post=29163"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/mjtsai.com\/blog\/wp-json\/wp\/v2\/tags?post=29163"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}