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\u201cHyper\/MPS (Main Propulsion System) pressurization\/closeouts are complete. Payloads picked up a PR (Problem Report) on a GN2 Teflon tubing potential interference with the PLBD during closure; the issue was fixed yesterday once Pad-A was opened for controlled work,\u201d noted the latest Shuttle Stand-up\/Integration report on L2.<\/p>\n
\u201cPayload battery charging was completed on Thursday. Payload bay closeouts supporting payload bay door closure continue; payload bay door closure is scheduled for 3:30 pm Eastern,\u201d added a Friday NTD processing report, before listing other minor issues that are either in work, or closed.<\/p>\n
\u201cRefrigeration unit position 1 temperature transducer A505199 is not controlling to the set point. Engineering disposition is in work and a new part is on order.<\/p>\n
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\u201cGSE (Ground Support Equipment) LH2 pre-press valve cycles too fast. The valve control solenoid was replaced.<\/p>\n
\u201cUpdate: timing tests of the repaired MLP (Mobile Launch Platform) GSE LH2 pre-press valve were performed Thursday and continues today. The valve\u2019s cycle performance is still under engineering evaluation.<\/p>\n
\u201cWhile towing the Bird Radar for setup in support of the launch, the horizontal scan bracket was damaged when it came in contact with the Orbiter simulator in the hangar at the SLF (Shuttle Landing Facility); damage assessment and repairs continue. The backup radar was installed and is supporting the launch.<\/p>\n
One late item that required clearance for flight related to an attach bolt that was observed to be slightly loose on Discovery\u2019s right hand OMS (Orbital Maneuvering System) Pod during her STS-128 (post flight STS-119) processing flow inside OPF-3 (Orbiter Processing Facility).<\/p>\n
![\"a26\"](\"https:\/\/www.nasaspaceflight.com\/wp-content\/uploads\/2009\/05\/a26.jpg\" "\\"a26\\"")
\u201c(Issue) was picked up last night during the RH OMS pod removal,\u201d noted STS-128 processing information on L2. \u201cDuring preparations for removal, it was discovered that the attach point 3 bolt was loose\/under-torqued, it should have been at 4800 in-lbs.<\/p>\n\u201cThe troubleshooting plan will involve using borescopes to measure the threads on all the attach bolts on both left and right pods to get a baseline and then to perform inspections as the pod is separated from the deck. The constraint is to pod removal.\u201d<\/p>\n
While that issue will be cleared on Discovery, due to the identical hardware and processing procedures carried out on her sisters, inspections were called on both Atlantis and Endeavour out at the pads. No issues were found on either orbiter \u2013 allowing for a wavier for flight to be issued.<\/p>\n
\u201cThe aft 50-1 and 2 doors were temporarily removed to allow borescope inspections of the OMS pod attach point bolts (on Atlantis),\u201d added STS-125 processing information. These inspections were performed to verify a low torque condition found on Discovery\u2019s right pod attach point 3 bolt was not also present on Atlantis.<\/p>\n
\u201cThe inspection verified the attach bolts were fully engaged in the locking feature of the nut plate and sufficient thread protrusions were evident. No personnel entered the aft to maintain aft confidence and the 50-1 and 2 doors were re-installed for flight.\u201d<\/p>\n
Saturday afternoon will involve a meeting of the Mission Management Team (MMT), which will discuss the progress of S0007 operations.<\/p>\n
Sunday will also involve a meeting of the engineering groups that will discuss Atlantis\u2019 flow and processing with the quarantined STS-125 crew via telecon. This will be a major engineering overview presented to the crew overviewing work on the orbiter since last September.<\/p>\n
The MMT will meet again on Sunday and again on Monday, with the goal to approve a \u201cgo\u201d for tanking early on Monday morning.<\/p>\n
\u201cL-2 MMT review is scheduled for Saturday May 9th at 1700 EDT in OSB II room 5109,\u201d added the Stand-up report, before adding a rallying call from MMT chair Leroy Cain.<\/p>\n
\u201cAll team members need to remember to stay focused. There are many moving parts and we cannot afford to take our eye off of the ball. (Mr Cain) is very proud of everyone\u2019s effort towards mission success.<\/p>\n
\u201cThere is nothing more important than for us to do our job to the best of our ability every day.\u201d<\/p>\n
L2 members<\/em><\/em>: Documentation \u2013 from which most of the above article has quoted snippets \u2013 is available in full in the related L2 sections, now over 4000 gbs in size.<\/em><\/em><\/p>\n","protected":false},"excerpt":{"rendered":"
Atlantis has entered the complex ballet of S0007 (Launch Countdown) operations for the flagship STS-125 mission to the Hubble Space Telescope, with no major issues being worked by engineers at Pad 39A. Atlantis \u2013 tracking a launch target of 2:01pm local on Monday \u2013 and has undergone the closure of her Payload Bay Doors (PLBDs). […]<\/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":[3479,8290],"class_list":["post-41110","post","type-post","status-publish","format-standard","hentry","category-news","tag-oms","tag-sts-125"],"acf":[],"_links":{"self":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41110"}],"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=41110"}],"version-history":[{"count":0,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/posts\/41110\/revisions"}],"wp:attachment":[{"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/media?parent=41110"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/categories?post=41110"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/starpath.global\/blog\/wp-json\/wp\/v2\/tags?post=41110"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}