MISSION: STS-84 -- 6th MIR DOCKING & SPACEHAB DM (image)

• VEHICLE: Atlantis/OV-104
• LOCATION: Vehicle Assembly Building
• TARGET KSC LAUNCH DATE/TIME: May 15 at about 4:08 a.m.
• LAUNCH WINDOW: 7-10 minutes
• TARGET KSC LANDING DATE/TIME: May 25 at about 8:32 a.m.
• MISSION DURATION: 10 days, 4 hours, 24 minutes
• CREW: Precourt, Collins, Foale, Noriega, Lu, Clervoy, Kondakova
• ORBITAL ALTITUDE and INCLINATION: 160 nautical miles/51.6 degrees

NOTE: External tank umbilical close-outs are in work and Shuttle interface tests continue to run smoothly. Preparations to roll Atlantis out to Pad 39A will pick up today. First motion is slated for 3 a.m. tomorrow. Work to design and fabricate the clamps that will help securely fasten the "pyro can" and base plate assemblies in Atlantis' aft compartment continues. A fit check of the fabricated parts is slated for Friday and installation should occur on Tuesday. The Spacehab module arrived at Pad 39A yesterday and was then transferred to the payload ground handling mechanism inside the payload change out room.

STS-84 SCHEDULED OPERATIONAL MILESTONES (dates are target only):

• Orbiter to the pad (April 24)
• Terminal Countdown Demonstration Test (April 28-29)
• Flight Readiness Review (April 30)

MISSION: STS-83R -- Microgravity Science Laboratory-1 (image)

• VEHICLE: Columbia/OV-102 (image)
• LOCATION: Orbiter Processing Facility bay 1
• TARGET LAUNCH DATE/TIME: July 1 at 2:37 p.m. (under review)
• LAUNCH WINDOW: 2 hours, 30 minutes
• TARGET KSC LANDING DATE/TIME: July 17 at 7:23 a.m.
• MISSION DURATION: 15 days, 16 hours, 46 minutes
• CREW: Halsell, Still, Voss, Thomas, Gernhardt, Linteris, Crouch (image)
• ORBITAL ALTITUDE and INCLINATION: 160 nautical miles/28.45 degrees

NOTE: Thruster replacement work continues on Columbia's forward reaction control system in the Hypergol Maintenance Facility. The forward reaction control system should return to the OPF in early May to be reinstalled on the orbiter. Technicians are preparing for postflight work on Columbia's auxiliary power units to be conducted on Saturday. Spacelab reservicing activities continue.

Booster stacking operations continue in the Vehicle Assembly Building with mating of the right aft center segment to the right aft segment scheduled for today. The right forward center segment arrives in the VAB tonight and should be added to the right hand booster stack Friday morning.

STS-83R SCHEDULED OPERATIONAL MILESTONES (dates are target only):

• Forward reaction control system installation (May 6)
• Space Shuttle main engine installation (May 7)

MISSION: STS-85 -- CRISTA-SPAS-2

• VEHICLE: Discovery/OV-103
• LOCATION: Orbiter Processing Facility bay 2
• TARGET LAUNCH DATE/TIME: August 7 at 10:39 a.m. (under review)
• LAUNCH WINDOW: 1 hour, 41 minutes
• TARGET KSC LANDING DATE/TIME: August 19 at 7:27 a.m.
• MISSION DURATION: 10 days, 20 hours, 48 minutes
• CREW: Brown, Rominger, Davis, Curbeam, Robinson, Tryggvason
• ORBITAL ALTITUDE and INCLINATION: 160 nautical miles/57 degrees

NOTE: Preparations to install Discovery's forward reaction control system continue today and installation is now slated for Thursday. Leak checks on valves in the main propulsion system are complete and good. Payload premate activities continue through this week.

STS-85 SCHEDULED OPERATIONAL MILESTONES (dates are target only):

• FRCS installed (April 24)

MISSION: STS-86 -- 7th MIR DOCKING and LOGISTICS MODULE

• VEHICLE: Endeavour/OV-105
• LOCATION: Orbiter Processing Facility bay 3
• TARGET LAUNCH DATE/TIME: September 24 at 10:55 p.m. (under review)
• LAUNCH WINDOW: 7-10 minutes
• TARGET KSC LANDING DATE/TIME: October 4 at 3:18 a.m.
• MISSION DURATION: 9 days, 4 hours
• CREW: Wetherbee, Bloomfield, Parazynski, Titov, Chretien, Lawrence (up), Foale (down)
• ORBITAL ALTITUDE and INCLINATION: 170 nautical miles/51.6 degrees

NOTE: Technicians continue work to gain access to Endeavour's forward and aft compartments. The payload bay doors will be opened today.

STS-86 SCHEDULED OPERATIONAL MILESTONES (dates are target only):

• Payload bay doors open (today)
• Ferry kit removal (April 30)

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