Objective of mission STS-101 was repair, resupply and construction tasks aboard the international space station. This was the first launch with new electronic cockpit displays and other upgrades. The solid boosters separated at 10:13 GMT and the main engines cutoff at 10:19 GMT. The external tank, ET-102 then separated, with both orbiter and ET-102 in a 52 x 320 km initial orbit. At 10:54 GMT the OMS engines fired to raise perigee to 159 x 329 km x at 51.6 deg. Atlantis docked with the International Space Station's PMA-2 docking adapter on the Unity node at 04:31 GMT on May 21. At that time the ISS was in a 332 x 341 km orbit.
On May 22 mission specialists Jeff Williams and James carried out external maintenance work on the ISS.
On May 23 at 00:03 GMT the Atlantis crew opened the first hatch to PMA-2 and entered the Station. The crew replaced a set of batteries in Zarya, installed fans and ducting to improve airflow, and delivered supplies and equipment. Three hour-long orbit raising burns on May 24 and 25 by the RCS engines on Atlantis raised the station to a 372 x 380 km x 51.6 deg orbit.
The STS-101 crew left the station on May 26, closing the PMA-2 hatch at 08:08 GMT and undocking at 23:03 GMT. Atlantis performed a 180 degree flyaround of the station and departed the vicinity around 23:44 GMT.
Atlantis closed its payload bay doors around 02:30 GMT on May 29 and fired the OMS engines for deorbit at 05:12 GMT. The vehicle landed on RW15 at Kennedy Space Center at 06:20 GMT. Atlantis was to be turned around for the next ISS shuttle flight, STS-106.
Left in orbit was the renovated International Space Station, equipped with an upgraded electrical system, new fans, filters, fire extinguishers, smoke detectors and communications gear.
The priorities for STS-101/2A.2a were:
1. ISS ingress/safety - Take air samples - Monitor carbon dioxide - Deploy portable, personal fans - Measure air flow - Rework/modify ISS ducting - Replace air filters - Replace Zarya fire extinguishers, smoke detectors
2. Critical replacements/repairs/spares - Replace four suspect batteries on Zarya - Replaced failed or suspect electronics for Zarya's batteries - Replace Radio Telemetry System memory unit - Replace port early communications antenna - Replace Radio Frequency Power Distribution Box - Clear Space Vision System target
3. Incremental assembly/upgrades - Complete assembly of Strela crane - Install additional exterior handrails - Set up center-line camera cable - Install "Komparus" cable inserts - Reseat the U.S. crane
4. Assembly parts & equipment - Transfer U.S. hardware - Transfer Russian hardware - Provide EVA tools - Supply IVA kit
5. Pre-position/stow equipment & provisions for future missions
6. Resupply - Water and water transfer, stowage equipment - Docking mechanism accessory kit - Film and video tape for documentation - Office supplies - Personal items
7. Crew health maintenance - Exercise equipment - Medical support supplies - Formaldehyde monitor kit - Passive dosimetry system
8. Detailed test objectives - Monitor cabin air - SOAR
If there is sufficient shuttle propellant following Atlantis' undocking from the ISS, a flyaround inspection will be performed prior to the Shuttle's final separation maneuver.
Commander: James D. Halsell Pilot: Scott J. Horowitz Mission Specialist 1: Mary Ellen Weber Mission Specialist 2: Jeffrey N. Williams Mission Specialist 3: James S. Voss Mission Specialist 4: Susan J. Helms Mission Specialist 5: Yuri V. Usachev
Orbiter: Atlantis OV104. Launch Site: Kennedy Space Center. Launch Pad 39B. Launch Window: 5 Minutes. Altitude: 320 km. Inclination: 51.6 Degrees. Duration: 9 Days 20 Hrs. 36 Min.
Shuttle Liftoff Weight: 4,519,645 lbs. Orbiter/Payload Landing Weight: 221,271 lbs.
Payload Weights: ICC 3,700 pounds. MARS: 270 lb.
Software Version: OI-27
Space Shuttle Main Engines: SSME 1: 2052 SSME 2: 2044 SSME 3: 2047
External Tank: ET-103A
SRB Set: BI-102PF/RSRM-75
BioTube Precursor Experiment; SPACEHAB Integrated Cargo Carrier; Mission to America's Remarkable Schools Space Experiment Module 6