{"id":293468,"date":"2025-06-14T20:41:48","date_gmt":"2025-06-14T20:41:48","guid":{"rendered":"https:\/\/peraltafinancing.com\/airline\/b744-hyd-press-sys-1-checklist-qrh\/"},"modified":"2025-06-14T20:41:48","modified_gmt":"2025-06-14T20:41:48","slug":"b744-hyd-press-sys-1-checklist-qrh","status":"publish","type":"post","link":"https:\/\/fivemor.com\/?p=293468","title":{"rendered":"B744 HYD PRESS SYS 1 checklist\/QRH"},"content":{"rendered":"<p> <br \/>\n<\/p>\n<div>Hello,<\/p>\n<p>I\u2019ve attached a screenshot of the QRH for the B744 HYD PRESS SYS 1,2,3,4 checklist.  <\/p>\n<p>In the event that only  SYS 1 has failed you get to the statement I have circled.  It states not to use AUX 1 hyd pump which makes sense, but also implies using AUX 4 pump is also forbidden even if only SYS 1 has failed. <\/p>\n<p>Is that statement meant only to apply if SYS 4 has failed (you would read the same page of the checklist if only SYS 4 has failed), in which case you\u2019re supposed to disregard the implied prohibition on AUX 1?<\/p>\n<p><img decoding=\"async\" src=\"https:\/\/cimg4.ibsrv.net\/gimg\/pprune.org-vbulletin\/1080x2000\/img_5560_207420f8bdb4199b282c58bdd5ce401be75778bc.jpeg\" alt=\"\" class=\"post_inline_image\" \/>\n <\/div>\n\n","protected":false},"excerpt":{"rendered":"<p>Hello, I\u2019ve attached a screenshot of the QRH for the B744 HYD PRESS SYS 1,2,3,4 checklist. In the event that only SYS 1 has failed you get to the statement I have circled. It states not to use AUX 1 hyd pump which makes sense, but also implies using AUX 4 pump is also forbidden [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":293469,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[12028],"tags":[53485,2236,12585,12950,41795,14249,53489,1906,12875,35530,53481,5167,124863,12576,53487,124864,14580,14115,53490,2408,38943,533,17604,2364,53480,53479,1043,56865,53482,5921,53486,1820,1042,25005,1549,1478,53488,53478,15498,14996,324,38614,53483,53484,1558],"dealstore":[],"offerexpiration":[],"class_list":["post-293468","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-airline","tag-aeroplane","tag-air","tag-airbus","tag-aircraft","tag-aircrew","tag-airline","tag-airline-pilot","tag-airplane","tag-airport","tag-atc","tag-atpl","tag-aviation","tag-b744","tag-boeing","tag-caa","tag-checklistqrh","tag-cockpit","tag-commercial","tag-commercial-pilot","tag-control","tag-cpl","tag-crew","tag-faa","tag-flight","tag-flightcrew","tag-flightdeck","tag-flying","tag-hyd","tag-ifr","tag-jet","tag-logbook","tag-news","tag-pilot","tag-pilots","tag-press","tag-professional","tag-professional-pilot","tag-rumour","tag-sys","tag-traffic","tag-training","tag-turboprop","tag-vfr","tag-wannabe","tag-weather"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.4 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>B744 HYD PRESS SYS 1 checklist\/QRH - Som2ny Network<\/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:\/\/fivemor.com\/?p=293468\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"B744 HYD PRESS SYS 1 checklist\/QRH - Som2ny Network\" \/>\n<meta property=\"og:description\" content=\"Hello, I\u2019ve attached a screenshot of the QRH for the B744 HYD PRESS SYS 1,2,3,4 checklist. In the event that only SYS 1 has failed you get to the statement I have circled. It states not to use AUX 1 hyd pump which makes sense, but also implies using AUX 4 pump is also forbidden [&hellip;]\" \/>\n<meta property=\"og:url\" content=\"https:\/\/fivemor.com\/?p=293468\" \/>\n<meta property=\"og:site_name\" content=\"Som2ny Network\" \/>\n<meta property=\"article:published_time\" content=\"2025-06-14T20:41:48+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/fivemor.com\/wp-content\/uploads\/2025\/06\/img_5560_207420f8bdb4199b282c58bdd5ce401be75778bc.jpeg\" \/>\n\t<meta property=\"og:image:width\" content=\"1073\" \/>\n\t<meta property=\"og:image:height\" content=\"2000\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"admin\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"admin\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"Article\",\"@id\":\"https:\/\/fivemor.com\/?p=293468#article\",\"isPartOf\":{\"@id\":\"https:\/\/fivemor.com\/?p=293468\"},\"author\":{\"name\":\"admin\",\"@id\":\"https:\/\/fivemor.com\/#\/schema\/person\/b85e3c3dc0e1daea076524dc8810c371\"},\"headline\":\"B744 HYD PRESS SYS 1 checklist\/QRH\",\"datePublished\":\"2025-06-14T20:41:48+00:00\",\"mainEntityOfPage\":{\"@id\":\"https:\/\/fivemor.com\/?p=293468\"},\"wordCount\":104,\"commentCount\":0,\"publisher\":{\"@id\":\"https:\/\/fivemor.com\/#organization\"},\"image\":{\"@id\":\"https:\/\/fivemor.com\/?p=293468#primaryimage\"},\"thumbnailUrl\":\"https:\/\/fivemor.com\/wp-content\/uploads\/2025\/06\/img_5560_207420f8bdb4199b282c58bdd5ce401be75778bc.jpeg\",\"keywords\":[\"aeroplane\",\"Air\",\"AIRBUS\",\"Aircraft\",\"Aircrew\",\"Airline\",\"airline pilot\",\"Airplane\",\"Airport\",\"ATC\",\"atpl\",\"Aviation\",\"B744\",\"Boeing\",\"caa\",\"checklistQRH\",\"Cockpit\",\"commercial\",\"commercial pilot\",\"CONTROL\",\"CPL\",\"crew\",\"FAA\",\"Flight\",\"flightcrew\",\"flightdeck\",\"Flying\",\"HYD\",\"ifr\",\"Jet\",\"logbook\",\"NEWS\",\"Pilot\",\"Pilots\",\"Press\",\"Professional\",\"professional pilot\",\"rumour\",\"SYS\",\"traffic\",\"Training\",\"turboprop\",\"vfr\",\"wannabe\",\"Weather\"],\"articleSection\":[\"Airline\"],\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"CommentAction\",\"name\":\"Comment\",\"target\":[\"https:\/\/fivemor.com\/?p=293468#respond\"]}]},{\"@type\":\"WebPage\",\"@id\":\"https:\/\/fivemor.com\/?p=293468\",\"url\":\"https:\/\/fivemor.com\/?p=293468\",\"name\":\"B744 HYD PRESS SYS 1 checklist\/QRH - 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