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

• VEHICLE: Atlantis/OV-104
• LOCATION: Pad 39A
• 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: Atlantis arrived at Pad 39A yesterday at about 8:30 a.m. Last night, at about 9:30 p.m., auxiliary power unit No. 3 was hot fired. The rotating service structure was moved into position at about 9 a.m. today. The engine flight readiness test is scheduled for tomorrow, and helium signature tests are set for Monday.

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 today and installation should occur on Tuesday. The payload bay doors will be opened today and payload installation is set for Monday.

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

• Payload installed into the orbiter (April 28)
• 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. Postflight work on Columbia's auxiliary power units continues through Tuesday. Spacelab reservicing activities also continue.

STS-83R booster stacking operations continue in the Vehicle Assembly Building. Right forward center segment mating activities are in work today.

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: Discovery's forward reaction control system was installed last night and electrical hook- ups are in work. Payload premate activities continue through next week.

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

• Space Shuttle main engine installed (May 5)

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: Endeavour's payload bay doors are open and technicians continue work to gain access to the orbiter's midbody and aft compartment. Freon coolant loop deservicing is in work today.

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

• Ferry kit removal (April 30)

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