Static Camera view of STS-80 Columbia at Liftoff
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STS-80 Liftoff Status Page

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Shuttle Columbia Launch Status

November 19, 1996 2:55:47 p.m EST. Launch window was 2 hours and 30 minutes. Launch was held at T-31 seconds due to a Launch Commit Criteria (LCC) violation at 2:52pm EST due to a slight hydrogen leak in the AFT. Per the LCC, the launch team held at the T-31 second mark for 2 minutes and monitored the concentration of hydrogen in the AFT. Values were at acceptable limits and the CPROP console location of the launch team recommended to proceed. Count resumed at 2:54pm EST with a T-0 at 2:55pm EST.

On Tuesday, 11/19/96, the STS-80 crew wakeup was at 9:58am. They then ate breakfast around 10:30am and departed to Launch pad 39B around 11:38am. By 1:05pm EST all crew members were inside Columbia. Crew communications checks were done at 1:25pm EST and the hatch was closed at 1:38pm EST.

On Friday, November 13, 1996, launch controllers reset the countdown clock from the T-11 hour mark to the built-in hold point at the T-19 hour mark. (Reference KSC Shuttle Status 11/15/1996) and on Monday, November 18, the countdown clock resumed from the T-19 hour hold point at 1am. (Reference KSC Shuttle Status 11/18/1996)

On Wednesday, November 13, 1996 the Mission Management Team rescheduled the STS-80 launch from Friday November 15 to Tuesday November 19, 1996 due to scheduling conflicts with the range.

On Tuesday, November 12, 1996 the countdown for the launch of Space Shuttle Columbia today began at 1 p.m. EST at the T-43 hour mark. The KSC launch team is conducting the countdown for mission STS-80 from Firing Room 3 of the Launch Control Center. The countdown contains 30 hours, 50 minutes of built-in hold time leading to the opening of the launch window at 2:50 p.m. (EST) on Friday, Nov. 15. The crew arrived at 6:30pm on 11/11/96. The weather forcast for 11/15/96 shows an 80 percent chance that weather will violate launch criteria. (Reference KSC Shuttle Status 11/12/1996)

On 11/11/96, technicians performed leak checks on the freon line that provides coolant to fuel cell No. 1. A routine review of the cooling system revealed the freon line's leak rate to be right at the acceptable limit. Managers decided to off load the freon and then refill, taking several opportunities to analyze the system in the process. (Reference KSC Shuttle Status 11/11/1996)

On 11/8/96, mission managers were assessing an issue regarding Columbia's fuel cells. A suspect technique used to assemble the fuel cell's regulator diaphragm, which is internal to the cell, is being reviewed. (Reference KSC Shuttle Status 11/08/1996)

On 11/4/96, the Mission Management Team decided to delay for about a week the launch of Columbia. This extra time will be used by managers to fully understand the issue regarding the nozzle erosion seen during the launch of STS-79. Managers will meet early next week to confirm a new launch date that will be no earlier than November 15, 1996. (Reference KSC Shuttle Status 11/04/1996)

On 10/29/96, preparations were underway to complete loading hypergolic fuel into Columbia's Reaction Control System (RCS). Fueling was not completed due to the failure of a fuel pump at Pad LC39B. That pump has been replaced and fueling is set to begin following ordnance installation operations. The payload interface verification test on ORFEUS-SPAS was completed and the interface verification test on Wake Shield Facility was underway. The payload doors will be closed for flight on Nov. 5. (Reference KSC Shuttle Status 10/29/1996)
On 10/20/96, Columbia's crew arrived at KSC for the Countdown Demonstration Test (CDT) which lasts 2 days. On 10/21/96, STS-80 payloads were installed into the payload bay and the orbiter mid-body umbilical unit (OMBU) was mated to the orbiter and checked for leaks. (Reference KSC Shuttle Status 10/22/1996)

On 10/16/96, Columbia traveled the 4.2 mile journey to Pad 39B. First motion was at 4:21am and the Mobile Launcher Platform was hard-down on the pad at about 10:30am EST. APU No. 1 was hot fired for about 7 minutes on 10/17/96. (Reference KSC Shuttle Status 10/17/1996) The Rotating Service Structure was then retracted for one day late Friday to allow the public to view Columbia during KSC's Community Appreciation Day on Saturday 10/19/96. (Reference KSC Press Release 99-96).

On 10/11/96, the vertical payloads arrived at Pad 39B at about 2:31 a.m. and the payload transport canister was lifted to the payload changeout room at about 5:30am. From there it was transfered into Columbia's cargo bay. (Reference KSC Shuttle Status 10/11/1996)
On 10/9/96, Columbia was rolled over to the VAB to be mated to the External Tank (ET) in VAB High Bay 3. The rollover was completed by 1:30pm and hardmated to the external tank at 2:28pm on 10/11/96. (Reference KSC Shuttle Status 10/10/1996)

On 10/7/96, Columbia's windows No. 3 and No. 4 were replaced after an engineering analysis suggested that windows with a high number of flights could tend to fracture more easily. One of the windows had flown eight times and the other seven times. (Reference KSC Shuttle Status 10/08/1996)

On 10/3/96, closeouts of the orbiter's mid-body and aft engine compartment were performed. (Reference KSC Shuttle Status 10/07/1996)

Installation of the 3 SSME's were completed on 8/19/96 and Getaway Special (GAS) beams installed in the payload bay. (Reference KSC Shuttle Status 8/19/1996)

Operations to deservice the hypergolic system was completed on 7/22/96. The fuel cells were checked and the flash evaporator system flushed. The remote manipulator system was installed into Columbia's payload bay 7/25/96. APU No. 1 was installed on 7/26/96. Checks of the Flash Evaporator System and General Purpose Computers took place on July 29, 1996. (Reference KSC Shuttle Status 7/29/1996)

STS-80 Movies and Images

Note:

STS-80 Countdown Last Mission STS-79 Next Mission STS-81


Developed under the direction of the NASA KSC Public Affairs Office
Author: Jim Dumoulin (dumoulin@titan.ksc.nasa.gov) / NASA - Payload Operations
Last Updated: Thursday August 31 10:55:48 EDT 2000(J.Dumoulin)

A service of NASA/Kennedy Space Center Public Affairs Office, Joe Gordon Jr.,Director (Joseph.Gordon-1@ksc.nasa.gov)