This was a reflight of the STS-83 Microgravity Science Laboratory (MSL) mission.

STS-94 (MSL-1 reflight)

Shuttle Used, Columbia
Launch Pad, Pad A
Mission Number, 85th Shuttle mission
Columbia Flights, 23rd flight OV-102 - STS-83 reflight
KSC Landing, 38th KSC landing

Orbiter Preps (move to):

OPF - April 9, 1997
VAB - June 4, 1997
Pad - June 11, 1997

Crew:

James D. Halsell Jr., Commander (4th Shuttle flight, including STS-83)
Susan L. Still, Pilot (2nd)
Janice Voss, Payload Commander (4th)
Michael L. Gernhardt, Mission Specialist (3rd)
Donald A. Thomas, Mission Specialist (4th)
Roger K. Crouch, Payload Specialist (2nd)
Gregory T. Linteris, Payload Specialist (2nd)

Launch:

July 1, 1997, 2:02:00 p.m. EDT. Liftoff was delayed about 12 minutes because of unacceptable weather conditions in the launch area in the event a return-to-launch-site abort was necessary.

The launch window originally was targeted to open at 2:37 p.m., July 1. On June 30, NASA managers decided to move it back 47 minutes to 1:50 p.m. to avoid forecasted afternoon thundershowers.

Landing:

July 17, 1997, 6:46:34 a.m. EDT, Runway 33, Kennedy Space Center, Fla. Rollout distance: 8,892 feet (2710 meters).

Rollout time: 55 seconds. Mission duration: 15 days, 16 hours, 44 minutes, 34 seconds. Landed on revolution 251.

Landing occurred on first opportunity.