• VEHICLE: Atlantis/OV-104
• LOCATION: Orbit
• OFFICIAL KSC LAUNCH DATE/TIME: Jan. 12 at about 4:27.23 a.m. EST
• DOCK WITH MIR: Jan. 14 at about 10:53 p.m. EST
• UNDOCK FROM MIR: Jan. 19 at about 9:12 p.m. EST
• TARGET KSC LANDING DATE/ *TIME: Jan. 22 at about 7:47 a.m. EST
• *MISSION DURATION: 10 days, 3 hours, 20 minutes
• CREW: Baker, Jett, Grunsfeld, Ivins, Wisoff, Linenger (up), Blaha (down)
• ORBITAL ALTITUDE and INCLINATION: 184 statute miles/51.6 degrees

NOTE: Atlantis is scheduled to undock from Mir at about 9:12 a.m. on Sunday, Jan. 19. Landing remains set for Jan. 22 at about 7:47 a.m. at KSC.

The crew of STS-81 The crew of STS-81 are: Commander Michael Baker, Pilot Brent Jett, and Mission Specialists Jeff Wisoff, John Grunsfeld, Marsha Ivins, Jerry Linenger (up), and John Blaha (down).

• VEHICLE: Discovery/OV-103
• LOCATION: Vehicle Assemble Building
• *TARGET LAUNCH DATE/TIME: February 11 at 3:56 a.m.
• *LAUNCH WINDOW: 65 minutes
• *TARGET KSC LANDING DATE/TIME: February 21 at 2:30 a.m.
• MISSION DURATION: 9 days, 22 hours
• CREW: Bowersox, Horowitz, Lee, Hawley, Harbaugh, Smith, Tanner
• ORBITAL ALTITUDE and INCLINATION: 360 statute miles/28.45 degrees

*Please note changes from earlier status

NOTE: Rollout of Discovery to Pad 39A was halted today at about 8:25 a.m. when observers heard a "loud bang" and a 24 foot-long crack developed on the Mobile Launcher Platform (MLP) surface. The crack in the 1/2 inch steel plate runs from near the left hand SRB flame hole toward the closest corner of the MLP. (The corner at MLP sides 2 & 3). The event happened about one hour after first motion (7:23 a.m.).

Engineering analysis indicated that there were no load bearing concerns for the weight bearing structure of the MLP and the Shuttle was cleared to resume rollout to the pad. Additional precautionary measurements and validations will be conducted this weekend at the pad and repairs will be made where necessary. No impact to the overall schedule is expected.

KEY STS-82 OPERATIONAL MILESTONES (dates are target only):

• Crew interviews with news media at pad (Tuesday, Jan. 21)
• Terminal Countdown Demonstration Test (Jan. 22-23)
• Hot fire auxiliary power units (Jan. 26)
• Deliver payloads to pad (Jan. 27)

• VEHICLE: Columbia/OV-102
• LOCATION: Orbiter Processing Facility Bay 1
• TARGET LAUNCH DATE/TIME: April 3 at about 2:19 p.m. EST
• LAUNCH WINDOW: 2 hours, 30 minutes
• TARGET KSC LANDING DATE/TIME: April 19 at 7:47 a.m. EST
• MISSION DURATION: 16 days
• CREW: Halsell, Still, Voss, Thomas, Gernhardt, Linteris, Crouch
• ORBITAL ALTITUDE and INCLINATION: 184 statute miles/28.45 degrees

NOTE: Work is under way to remove the right-hand orbital maneuvering system pod next week. The Orbiter Processing Facility (OPF) has been cleared for work to deservice hypergolic residuals still in the pod. Stacking of the right-hand solid rocket booster in the Vehicle Assembly Building continues. The left booster stack is complete.

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

• Remove right-hand orbital maneuvering system pod (Jan. 23)
• Complete sold rocket booster stacking operations (Jan. 24)
• Install Space Shuttle main engines (Jan. 27)
• Install Microgravity Science Laboratory into orbiter's payload bay (Jan. 28)
• Mate external tank to solid rocket boosters in VAB (Jan. 28)
• Roll to VAB (March 3)

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