There are 2 messages totalling 59 lines in this issue

Topics of the day:

1. STS-131 MCC Status Report #22
2. STS-131 MCC Status Report #23

Date: Thu, 15 Apr 2010 17:53:11 -0500 From: info@JSC NASA GOV Subject: STS-131 MCC Status Report #22

STS-131 Report #22 6 p m CDT Thursday, April 15, 2010 Mission Control Center, Houston, Texas

HOUSTON � After dealing with a balky set of bolt controllers, the combined crew of space shuttle Discovery and the International Space Station removed the Leonardo Multi-Purpose Logistics Module from its station port today

The crew closed Leonardo�s hatch at 2:38 a m CDT, but put the removal on hold when Mission Control saw unusual readings on the Control Panel Assemblies that operate the 16 remote-control bolts used to secure the pressurized cargo carrier to the Harmony module port

The crew disconnected and reconnected all 36 of the connectors that provide power and data to the controllers, and in the process found a small pin that had been broken They secured the pin, which was not part of the electrical connections, with Kapton tape to ensure it did not interfere with the bolts� operation Mission Control conducted additional troubleshooting, and the bolts were released at 3:19 p m

Leonardo, making is final round-trip to the station before becoming a Permanent Multi-Purpose Module for the station later this year, was unberthed at 3:24 p m , about seven hours later than planned The crew then used the station�s robotic arm to maneuver the module into position above Discovery�s payload bay Leonardo will remain in this �low hover� position overnight, and the crew will spend about an hour and a half finishing the job of using Canadarm2 to latch it in the shuttle�s cargo bay on Friday

Space station and space shuttle mission managers reaffirmed plans made overnight to forego a fourth spacewalk to replace the nitrogen tank assembly that has a jammed valve Engineers have decided the station can operate for an extended period in the current configuration The team continues to troubleshoot the jammed valve and to consider options for future replacement of the nitrogen tank assembly The tank assembly is used to pressurize and adjust for the expansion and contraction of the ammonia that circulates through radiators to shed excess heat generated by the station�s electronic systems

The delay in removing Leonardo resulted in a later-than-planned bedtime for the crew, which will be allowed to sleep in for about an hour later until 12:21 a m Friday The next shuttle status report will be issued after the is awakened, or earlier if events warrant

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NASA Johnson Space Center Mission Status Reports and other information are available automatically by sending an Internet electronic mail message to listserv@listserver jsc nasa gov In the body of the message (not the subject line) users should type "subscribe hsfnews" (no quotes) This will add the e-mail address that sent the subscribe message to the news release distribution list The system will reply with a confirmation via e-mail of each subscription Once you have subscribed you will receive future news releases via e-mail

Date: Fri, 16 Apr 2010 00:29:21 -0500 From: info@JSC NASA GOV Subject: STS-131 MCC Status Report #23

STS-131 Report #23 12:30 a m CDT Friday, April 16, 2010 Mission Control Center, Houston, Texas

HOUSTON �Space Shuttle Discovery�s crew will begin the day by packing the Leonardo Multi-Purpose Logistics Module securely into the shuttle�s payload bay before conducting one last inspection of Discovery�s heat shield

Yesterday�s delay in removing Leonardo from its berthing on the International Space Station�s Harmony module resulted in a later-than-planned bedtime and a delayed wake-up for the combined shuttle and station crews

The crew was awakened at 12:21 a m with the �Theme from Stargate� played for Mission Specialist Rick Mastracchio who is wrapping up his third spaceflight

After a seven-hour delay caused by a balky set of bolt controllers, the crew maneuvered Leonardo into a �low hover� position above Discovery�s payload bay for the night Thursday Using the station�s robotic arm, Mission Specialists Stephanie Wilson and Naoko Yamazaki will lower Leonardo into the payload bay at 2:26 a m That task is expected to take about an hour

Pilot James P Dutton Jr and Mission Specialists Dorothy Metcalf-Lindenburger and Wilson will then use the shuttle�s robotic arm and orbiter boom sensor system to begin inspection of the shuttle�s heat shield

Discovery is scheduled to undock from the station on Saturday at 7:52 a m

Discovery�s crew is scheduled for sleep at 3:21 p m The next shuttle status report will be issued after the crew�s work day ends, or earlier if events warrant

-end-

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NASA Johnson Space Center Mission Status Reports and other information are available automatically by sending an Internet electronic mail message to listserv@listserver jsc nasa gov In the body of the message (not the subject line) users should type "subscribe hsfnews" (no quotes) This will add the e-mail address that sent the subscribe message to the news release distribution list The system will reply with a confirmation via e-mail of each subscription Once you have subscribed you will receive future news releases via e-mail

End of HSFNEWS Digest - 15 Apr 2010 to 16 Apr 2010 (#2010-45)

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