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Int. Designation
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1997-004A
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Launched
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11 February 1997
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Launch Site
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Pad 39A, Kennedy Space Center, Florida
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Landed
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21 February 1997
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Landing Site
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Runway 15, Shuttle Landing Facility, KSC, Florida
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Launch Vehicle
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OV-103 Discovery/ET-81/SRB BI-085/SSME #1 2037;
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#2 2040; #3 2038
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Duration
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9 days 23 hrs 37 min 9 sec
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Call sign
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Discovery
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Objective
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2nd Hubble Servicing Mission
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Flight Crew
BOWERSOX, Kenneth Duane, 40, USN, commander, 4th mission Previous missions: STS-50 (1992); STS-61 (1993); STS-73 (1995) HOROWITZ, Scott Jay, 39, USAF, pilot, 2nd mission Previous mission: STS-75 (1996)
TANNER, Joseph Richard, 47, civilian, mission specialist 1, 2nd mission Previous mission: STS-66 (1994)
HAWLEY, Steven Alan, 45, civilian, mission specialist 2, 4th mission Previous missions: STS 41-D (1984); STS 61-C (1986); STS-31 (1990) HARBAUGH, Gregory Jordan, 39, civilian, mission specialist 3, 4th mission Previous missions: STS-39 (1991); STS-54 (1993); STS-71 (1995)
LEE, Mark Charles, 44, USAF, mission specialist 4, payload commander, 4th mission
Previous missions: STS-30 (1989); STS-47 (1992); STS-64 (1994)
SMITH, Steven Lee, 38, civilian, mission specialist 5, 2nd mission Previous mission: STS-68 (1994)
Flight Log
This was the first flight of Discovery after returning from its maintenance down period. The launch had been scheduled for 13 February but was moved up two days to give more flexibility. This mission was the second servicing mission to the Hubble Space Telescope, this time to upgrade and maintain the facility for further orbital use. It would also demonstrate the unique capability of the Shuttle to serve as a satelliteservicing vehicle, and the importance of having humans aboard to respond to unplanned activities. Four EVAs were scheduled, and a fifth was added to repair insulation material on the telescope.
Hubble was recaptured by the RMS and placed in Discovery’s payload bay on 13 February. Lee (EV1) and Smith (EV2) participated in EVAs 1, 3 and 5, while
A wide-angle view of the HST in Discovery’s payload bay high over Australia during the fifth and final EVA of the STS-82 mission. Steve Smith (centre) and Mark Lee (on RMS) are conducting a survey of handrails on the telescope. In the foreground is the hatch that provides access to the airlock and crew compartment of the Shuttle
Harbaugh (EV3) and Tanner (EV4) conducted EVAs 2 and 4. When one EVA crew was outside, the other provided IV support and EVA choreography, as well as resting and preparing their own EVA equipment for their next excursion. There were over 150 tools and crew aids available to the EVA astronauts on this flight.
During the first EVA, the astronauts replaced the Goddard High Resolution Spectrograph (GHRS) and Faint Object Spectrograph (FOS) with the new Space Telescope Imaging Spectrograph (STIS) and Near-Infrared Camera and Multi-Object Spectrometer (NICMOS). The second EVA saw the replacement of the Far Guidance System (FGS) and out-of-date recorders. The astronauts also installed the Optical Control Electronics Enhancement Kit (OCE-EK). It was on this EVA that cracking and wear to the telescope’s insulation material on the Sun-facing side in the direction of orbital travel was noted. EVA 3 was used to replace the older reel-to-reel Engineering and Science Data Recorders (ESDR) with new solid state data recorders. The Data Interface Unit (DIU) was also replaced, as was one of the four Reaction Wheel Assembly Units used to generate spin momentum both to move the telescope and to keep it stable. At the end of this EVA, mission managers decided to add a fifth EVA to repair the thermal insulation damage that had been discovered earlier.
During EVA 4, the Solar Array Drive Electronics (SADE) were replaced and new covers were placed over the magnetometers. The astronauts also installed thermal blankets of multi-layered material over two areas where the insulation had degraded. This was around the light shield section of the instrument near the top of the telescope. While Harbaugh and Tanner were completing this EVA, Horowitz and Lee worked inside Discovery to fabricate new insulation blankets for the telescope from spare material carried on the mid-deck. The fifth and final EVA saw the attachment of several thermal blankets to three equipment compartments at the top of the Support System Module, which contained key data-processing, electronics and scientific instrument and telemetry packages. At the close of this final excursion outside, the astronauts had logged 33 hours 11 minutes of total EVA time.
During the time the telescope was attached to the payload bay, Discovery’s manoeuvring engines were fired several times to raise the orbit by 8 nautical miles. The telescope was released on 19 February into its highest orbit to date, of 599 km x 620 km. The landing of Discovery was on the second attempt for 21 February, after the initial opportunity was waived off due to low clouds. The next planned Hubble service missions were manifested for 1999 and 2002.
Milestones
196th manned space flight
112th US manned space flight
82nd Shuttle mission
22nd flight of Discovery
2nd HST Service Mission
35th US and 65th flight with EVA operations
Bowersox exceeds 1,000 hours in space
Flight Crew
HALSELL Jr., James Donald, 40, USAF, commander, 3rd mission Previous missions: STS-65 (1994); STS-74 (1995)
STILL, Susan Leigh, 35, USN, pilot
VOSS, Janice Elaine, 40, civilian, mission specialist 1, payload commander,
3rd mission
Previous missions: STS-57 (1993); STS-63 (1995)
GERNHARDT, Michael Landen, 40, civilian, mission specialist 2, 2nd mission Previous mission: STS-69 (1995)
THOMAS, Donald Alan, 41, civilian, mission specialist 3, 3rd mission Previous missions: STS-65 (1994); STS-70 (1995)
CROUCH, Roger Keith, 57, civilian PhD, payload specialist 1 LINTERIS, Gregory Thomas, 39, civilian, payload specialist 2
Flight Log
The original launch on 3 April was delayed by 24 hours on 1 April after it became necessary to add extra thermal insulation to a water coolant line in Columbia’s payload bay. There was concern that there was insufficient insulation and that the line might freeze while in orbit. A further 20.5 minute delay on launch day was caused by the need to replace the orbiter access hatch seal.
The mission was planned for sixteen days, supported by an EDO kit. However, when a sudden upward voltage trend was noted in Fuel Cell 2 shortly after reaching orbit, mission rules were implemented and meant an early termination of the flight. Though the vehicle could fly safely on two fuel cells, mission rules state that all three fuel cells need to be operating well to ensure crew safety and provide sufficient back-up capacity during re-entry and landing. Similar problems had been noted with this fuel cell during launch check-ups, but tests cleared the unit for flight. Measures to address

Greg Linteris (left) is seen at the Mid-deck Glove Box (MGBX) while Don Thomas works at the Expedite Processing of Experiments to Space Station (EXPRESS) rack. Despite the shortened mission the crew were able to achieve some science results
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the problem on orbit were to no avail and on 6 April, the mission management team opted to terminate the mission at the earliest point.
The crew had been able to conduct some science in the Spacelab module despite the early return. Some of the materials processing experiments and fire-related experiments were conducted, but most of the experiments on board the science laboratory had not been fully activated when the call came to shorten the mission. Shortly after landing, the mission management team indicated that a re-flight of the mission was possible despite an extremely tight manifest for the rest of the year. Halsell commented that his crew had just completed the best training session possible in order to fly – they trained in space!
NASA began to evaluate manifesting STS-83R (Re-flight) to fly after the next Shuttle-Mir docking mission (STS-84), which was scheduled for May. By 24 April, the mission had been re-designated STS-94 (the next available flight number in the manifest) and the remaining 1997 missions were adjusted to accommodate the extra flight.
This would be one of the quickest turnarounds in Shuttle history and the first time a complete crew would re-fly intact and return to orbit to complete an abbreviated mission. By using the same orbiter, configured the same way, and flying the same crew, considerable time would be saved in processing the launch.
Post-flight tests indicated that an undetermined and isolated incident had caused a slight change in the voltage in about 25 per cent of the 96 cells that comprised the fuel cell generation unit, rather than a complete cell failure as at first suspected. More monitoring would be introduced on future missions, as it was determined that Columbia could have flown its full mission without problems. In light of the Challenger accident, the question of safety was raised given the quick turnaround plan, but an independent aerospace safety advisory panel recommended that NASA was capable of quickly flying Columbia again without placing undue risks on the crew or the vehicle.
Milestones
197th manned space flight
113th US manned space flight
83rd Shuttle mission
22nd flight of Columbia
14th flight of Spacelab Long Module
3rd shortened Shuttle mission
10th EDO mission (planned)
Int. Designation
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2000-053A
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Launched
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8 September 2000
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Launch Site
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Pad 39B, Kennedy Space Center, Florida
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Landed
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20 September 2000
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Landing Site
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Runway 15, Shuttle Landing Facility, KSC, Florida,
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Launch Vehicle
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OV-104 Atlantis/ET-103/SRB BI-102/SSME #1 2052; #2 2044; #3 2047
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Duration
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11 days 19 hrs 12 min 15 sec
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Call sign
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Atlantis
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Objective
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ISS assembly flight 2A.2b
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Flight Crew
WILCUTT, Terence Wade, 50, USMC, commander, 4th mission Previous missions: STS-68 (1994); STS-79 (1996); STS-89 (1998)
ALTMAN, Scott Douglas, 41, USN, pilot, 2nd mission Previous mission: STS-90 (1998)
LU, Edward Tsang, 37, civilian, mission specialist 1, 2nd mission Previous mission: STS-84 (1997)
MASTRACCHIO, Richard Alan, 40, civilian, mission specialist 2 BURBANK, Daniel Christopher, 39, USCG, mission specialist 3 MALENCHENKO, Yuri Ivanovich, 38, Russian Air Force, mission specialist 4, 2nd mission
Previous mission: Soyuz TM19 (1994)
MORUKOV, Boris Vladimirovich, 49, civilian, Russian, mission specialist 5
Flight Log
The Russian Service Module Zvezda docked to the aft port of Zarya on 26 July 2000, and was followed by Progress M1-3 at the aft port of Zvezda on 8 August. Zvezda was critical to the early occupation of ISS because it provided flight control and orbit maintenance functions. Zvezda also included the crew quarters for the early resident crews, and EVA facilities prior to the arrival of the airlock modules. With the arrival of Zvezda, a resident crew could remain on the station without the Shuttle being docked to it.
STS-106 docked to Unity on 10 September and remained there for 189 hours, during which the hatches were opened for over 129 hours. On the mission’s only EVA on 10 September (6 hours 14 minutes), Lu (EV1) and Malenchenko (EV2) connected nine power and data communication cables between Zvezda and Zarya as well as installing the station’s compass, a 1.82-metre magnetometer which showed the station in respect to the Earth. They also ventured farther than any tethered crew member had

The ISS configuration as of September 2000, photographed by the departing STS-106 during a fly-around manoeuvre. From left, US Unity Node, Zarya Control Module, Zvezda Service Module, Progress M1-3
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during a Shuttle EVA, over 30.4 metres above the cargo bay along the side of Zvezda and Zarya.
Work inside the station focused on reconfiguring Zvezda for operational use by removing launch bolts and restraints and installing voltage and current stabilisers inside the module. To save weight at launch, only five of the eight batteries had been installed, and the STS-106 crew installed the other three. They also installed components of the Elektron system designed to separate water into oxygen and hydrogen. The three tons of logistics transfers and numerous maintenance tasks took up most of the crew’s time during the docked phase. Managers monitoring onboard consumables were able to approve an extra day of docked operations to help ease the burden. The items transferred included six water containers, all of the food stores for the first resident crew, office supplies, onboard environmental supplies, a vacuum cleaner and a computer with monitor.
Atlantis undocked, after a further re-boost to the station’s orbit, on FD 11. This was followed by a fly-around of the station before commencing the preparations for the flight home. This undocking and fly-around manoeuvre, like those during the undocking of the Shuttle from Mir, is normally performed by the Shuttle pilot, giving
them experience in flying the orbiter in preparation for a future rendezvous and docking mission as commander.
Milestones
218th manned space flight 129th US manned space flight 99th Shuttle mission 22nd flight of Atlantis
43rd US and 76th flight with EVA operations 3rd Shuttle ISS mission 2nd Atlantis ISS mission
Flight Crew
DUFFY, Brian, 47, USAF, commander, 4th mission Previous missions: STS-45 (1992); STS-57 (1993); STS-72 (1996)
MELROY, Pamela Ann, 39, USAF, pilot
CHIAO, Leroy, 40, civilian, mission specialist 1, 3rd mission
Previous mission: STS-65 (1994); STS-72 (1996)
McARTHUR Jr., William Surles, 49, US Army, mission specialist 2,
3rd mission
Previous missions: STS-58 (1993); STS-74 (1995)
WISOFF, Peter Jeffrey Karl, 42, civilian, mission specialist 3, 4th mission Previous missions: STS-57 (1993); STS-68 (1994); STS-81 (1997) LOPEZ-ALEGRIA, Michael Eladio, 42, USN, mission specialist 4, 2nd mission Previous mission: STS-73 (1995)
WAKATA, Koichi, 37, civilian, Japanese, mission specialist 5, 2nd mission Previous mission: STS-72 (1996)
Flight Log
The original launch date for this mission (5 October) was rescheduled to 9 October when film reviews of the STS-106 launch revealed that the right-hand ET-to-orbiter attach bolt had failed to retract correctly. While this problem was being resolved, an orbiter LO pogo accumulator re-circulation valve located in the MPS failed to respond correctly and required replacement. The second launch attempt was postponed due to high winds at the pad area preventing the safe fuelling of the ET. The following day, a ground support equipment pin and tether, used on access platforms, was observed on the ET-to-orbiter LO feed line. Because of the risk of potential damage during launch, a further 24-hour delay was called.
Discovery docked with ISS on 13 October and remained there for the next 165 hours. However, such was the EVA demand on this crew that only 27 hours
As Discovery separates from ISS, a crew member records this view with the new additions visible. At the top, most of the Z1 Truss is visible, while in the centre is the PMA-2 on the Unity Node, and beneath is the newly installed PMA-3 also on Unity. The solar arrays are on the Russian segment was spent with internal hatches into ISS open. With the docking achieved, the crew used the RMS to lift the Zenith (Zl) Truss from the payload bay and onto the uppermost (zenith) docking port of Unity. Once completed, the crew confirmed the integrity of the seals and then opened the internal upper hatch to secure grounding connections between the Truss and the station. With that task completed, the EVA programme could begin.
The EVAs were completed by two pairs of astronauts. Chiao (EVl) and McArthur (EV2) performed the first and third excursions (15 Oct for 6 hours 28 minutes, and 17 Oct for 6 hours 48 minutes), while Wisoff (EV3) and Lopez-Alegria (EV4) completed the second and fourth (16 Oct for 7 hours 7 minutes, and 18 Oct for 6 hours 56 minutes). Both teams supported each other’s EVAs from inside the orbiter. During the EVAs, the crews connected electrical umbilicals for power to heaters and electrical conduits in the Zl Truss, relocated two communication antennas and installed a tool box for use during future on-orbit construction activities. On the second EVA, the PMA-3 was installed on Unity and the Zl Truss was prepared for the future attachment of solar arrays, beginning with the flight of STS-97. The astronauts also installed two DC-to-DC-converters on top of the Zl Truss which converted electricity generated by the solar arrays to the correct voltage. They tested a manual berthing mechanism, deployed a tray that would provide power for the US Laboratory Module (scheduled for delivery on STS-98) and remove a grapple feature from Zl. They also performed further tests of the SAFER units.
Following the completion of the EVAs, the crew began work inside the station, continuing the transfer of supplies and logistics for the first resident crew, who were scheduled to be the next docking mission at the station. The STS-92 crew also successfully tested the four control moment gyros used to orientate the station as it orbits the Earth. Microbial samples were taken from surfaces inside the station to check for contamination and they cleaned surfaces and storage containers with fungicidal wipes to inhibit microbial growth.
The original landing attempts on 22 October were waived off due to excessive crosswinds at the SLF. The winds remained high for the aborted 23 October landing attempt at the Cape and rain within the 50 km limit at Edwards meant the crew had to spend another day in space. With excessive winds still preventing any landing at the Cape, the rain at Edwards held off to allow the Shuttle to land there instead.
Milestones
2l9th manned space flight
l30th US manned space flight
l00th Shuttle mission
28th flight of Discovery
44th US and 77th flight with EVA operations
5th Shuttle ISS mission
2nd Discovery ISS mission