TDRS-M – Atlas V 401 – Канаверал SLC-41 – 18.08.2017 12:29 UTC

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Chris B - NSF‏ @NASASpaceflight 20 сек назад

T-4 mins and holding. Scheduled BIH. All nominal.

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08/18/2017 14:44
All three cryogenic tanks on the rocket have been topped off to flight level.

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William Harwood‏ @cbs_spacenews 2 мин. назад

A5/TDRSM: ULA anomaly team monitoring 'out of family' venting in an RD-180 chilldown line, but not expected to be an issue

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08/18/2017 14:48
The TDRS-M spacecraft is switching to internal power for launch.

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Spaceflight101 LIVE‏ @S101_Live 1 мин. назад

The #TDRSM spacecraft team has been instructed to begin payload final preps - switching the satellite to internal power.

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NASA_LSP‏Подлинная учетная запись @NASA_LSP 2 мин. назад

The NASA Launch Manager is conducting the final launch readiness poll. #TDRSM #AtlasV

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08/18/2017 14:54
The team is awaiting completion of the RL10 engine chilldown.

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08/18/2017 14:54
Standing by for the final readiness check to be conducted. The launch team will be polled for a "go" or "no go" to proceed with the count.

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08/18/2017 14:55
LIFTOFF delayed 5 minutes.

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Spaceflight101 LIVE‏ @S101_Live 34 сек. назад

T-0 moving five minutes to 12:08 UTC to await close out of the RL-10 chilldown. #TDRSM http://bit.ly/2i8MsVo

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Tory Bruno‏Подлинная учетная запись @torybruno 47 сек. назад

Working an observation on a thermal couple. Going to stay in the hold for a few minutes

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Spaceflight101 LIVE‏ @S101_Live 1 мин. назад

Anomaly Team is convening to discuss ramping up the chilldown pressure on Centaur's RL-10C engine to reach the desired temperature range.

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08/18/2017 15:01
To recap, liftoff has been delayed by at least a few minutes this morning because the Centaur upper stage engine thermal conditioning is taking a bit longer than scheduled.

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Tory Bruno‏Подлинная учетная запись @torybruno 28 сек. назад

Isolated to a ground line supporting chill down. Still working

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Spaceflight101 LIVE‏ @S101_Live 34 сек. назад

Pushing T-0 another five minutes while anomaly assessments continue on the RL-10C engine chilldown temps. #TDRSM http://bit.ly/2i8MsVo

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William Harwood‏ @cbs_spacenews 33 сек. назад

A5/TDRSM: Launch no no earlier than 8:13am; awaiting anomaly team recommendation

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08/18/2017 15:07
Liftoff now delayed to no sooner than 8:18 a.m. EDT (1218 GMT).