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**Over 2100mb of STS-116 onwards related presentions and mission documentation <\/em>available on L2<\/em> **<\/em><\/p>\n **LIVE LAUNCH UPDATES \u2013 Discovery STS-116**<\/em> Extensive Launch Coverage.<\/em><\/p>\n A similar \u2013 yet smaller \u2013 intrusion was noted early in the STS-121 countdown back in July \u2013 but that cleared and allowed Discovery to launch on the Independence Day lift-off.<\/p>\n This intrusion appears to be far more serious, requiring engineers to evaluate a course of troubleshooting during the 48 hour stand-down prior to the next launch attempt on Saturday night. <\/p>\n \u2018At T-0 (location) LH2 side on top of TSM, O2 levels were up to 4 percent with erratic readings. Possibly air intrusion in the area but this is the highest seen,\u2019 noted a memo acquired by this site.<\/p>\n \u2018Argon presence indicated air intrusion in the area of the T-0 cavity on the LH2 side. Haz gas reports the O2 reading of 3.9 percent, reading erratically higher than 2 percent, which is the highest that they have ever seen. <\/p>\n \u2018Planning on performing troubleshooting on the interface during the 48 hour scrub.\u2019<\/p>\n UPDATE: This has now been cleared. Full details in the \u201cattempt 2 preview\u201d in the morning.<\/em><\/p>\n On the plus side, the infamous ECO (Engine Cut Off) sensors behaved throughout the launch countdown. Even though there is a LCC (Launch Commit Criteria) waiver to allow one ECO LH2 sensor to fail \u2018wet\u2019 \u2013 all four ECOs worked as required.<\/p>\n On recent post Columbia missions the External Tank has been one of the main cause of problems. However, External Tank sources noted that this countdown was the most \u2018uneventful\u2019 they have ever worked. <\/p>\n During tanking, all four ECOs correctly turned to \u2018wet\u2019 \u2013 indicating the propellant that was being pumped into the External Tank. A test was carried out on the health of the sensors, called the SIM test, which commanded all four sensors to indicate \u2018dry\u2019 \u2013 before heading back to \u2018wet\u2019. The SIM test was successful.<\/p>\n Weather for Saturday\u2019s launch only has a 30 percent chance of becoming a problem at present.<\/p>\n **INFINITY: 10 minute STS-115 MUSIC VIDEO**<\/font><\/em> \u2013 **NASASpaceflight.com Job Opportunities**<\/em><\/font> <\/p>\n <\/font> It wasn\u2019t just the clouds over the Kennedy Space Center that proved to be a problem during the final minutes of Shuttle Discovery\u2019s scrubbed STS-116 launch attempt on Thursday night. The \u201chighest ever\u201d air intrusion was recorded on the LH2 side of the TSM (Tail Service Mast) \u2013 which could have caused a scrub, had […]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"","ping_status":"","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"inline_featured_image":false,"footnotes":"","_links_to":"","_links_to_target":""},"categories":[2],"tags":[],"class_list":["post-41862","post","type-post","status-publish","format-standard","hentry","category-news"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41862"}],"collection":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/comments?post=41862"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41862\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=41862"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=41862"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=41862"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}
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