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STS-105 Liftoff Status Page

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Shuttle Discovery Launch Status

August 10, 2001 5:10 p.m. EDT (21:10 GMT) Launch window was 5 minutes.

On Friday, the loading of cryogenic propellants began at 8:10 a.m. EDT and was completed at 11:07 a.m. EDT. The flight crew received a weather briefing at 12:45 a.m. EDT, ate breakfast and then departed for the launch pad at 1:25 p.m. EDT. Orbiter ingress began at 1:55 p.m. EDT and the hatch was closed at 3:10p.m. EDT. The access arm was retracted at 5:03 p.m. EDT. Launch occured at 5:10 p.m. EDT at the opening of the launch window.

On Thursday beginning at 8:20 a.m. and completing at 11:21 a.m. EDT, the external tank was loaded with its complement of 500,000 gallons of liquid cryogenic propellants. The crew departed for the pad at 1:47 p.m. and closeout was at 3:32 p.m. EDT. The countdown progressed to the T-minus 9 minute mark where the launch was scrubbed due to weather.

On Tuesday, August 7, 2001, launch countdown activities continue on schedule. Operations to load the Power Reactant and Storage Distribution (PRSD) system tanks with cryogenic reactants began late this afternoon. Loading operations are scheduled to be completed by early tomorrow morning, at which time the orbiter mid-body umbilical unit will be demated. Later tomorrow, the communications system on the Shuttle will be activated and tested and the rotating service structure will be moved to the launch position at about 9:30 p.m. (Reference KSC Shuttle Status 8/07/01)

On Monday, August 6, 2001, after a thorough engineering evaluation, Shuttle managers determined that the hydraulic power unit on
Space Shuttle Discovery's left-hand solid rocket booster is ready for flight with no additional work required. The launch countdown began on time at 5 p.m. in firing room No. 3. and preparation at Pad 39A continues on schedule toward the Aug. 9, STS-105 launch date. Discovery's aft compartment has been closed out for flight and Shuttle ordnance installation is complete. Payload interface verification testing is also complete. The STS-105 crew and Expedition 3 crew arrived at KSC Sunday at about 1:15 p.m. to begin final preparation for flight. (Reference KSC Shuttle Status 8/06/01)

On Wednesday, August 1, 2001, during the Flight Readiness Review NASA managers confirmed Aug. 9 as the official launch date for STS-105. At Launch Pad 39A, workers completed replacement of Discovery's master events controller No. 2 and retests are nearing completion. (Reference KSC Shuttle Status 8/02/01)

On Monday, July 1, 2001, Space Shuttle Atlantis arrived at Launch Pad 39B at 10:50 a.m. (2:50p.m. GMT). Processing continues on schedule for a launch date no earlier than July 12. Launch pad validations are in work through Friday. The STS-104 flight crew will participate in Terminal Countdown Demonstration Test activities late next week. The launch day dress rehearsal culminates with a simulated main engine cutoff on Friday, June 29. Shuttle and Space Station managers will assemble at KSC June 28 for the STS-104 Flight Readiness Review. (Reference KSC Shuttle Status 7/2/2001)
On Wednesday, June 20, 2001, with the orbiter, external tank and solid rocket boosters fully stacked in VAB high bay 3, Space Shuttle Discovery underwent Shuttle Interface Testing earlier this week. Final preparations for rollout to Launch Pad 39A are in work. Discovery could roll to the pad as early as June 26.
(Reference KSC Shuttle Status 6/20/2001)

NASA managers announced that Space Shuttle Discovery's launch will occur no earlier than early August. The delay accommodates the ongoing robot arm evaluation and allows the flight crew additional time to train for potential arm repair efforts during the upcoming mission. (Reference KSC Shuttle Status 5/31/2001)

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Developed under the direction of the NASA KSC Public Affairs Office
Author: Jim Dumoulin ( / NASA - Payload Operations
Last Updated: Tuesday October 2 08:42:23 EDT 2001(J.Dumoulin)

A service of NASA/Kennedy Space Center Public Affairs Office, Joe Gordon Jr.,Director (