Ms. Payette was selected as an astronaut by the Canadian Space Agency (CSA) in June 1992 and underwent training in Canada. After basic training, she worked as a technical advisor for the MSS (Mobile Servicing System), the Canadian contribution to the International Space Station. In 1993, Ms. Payette established the Human-Computer Interaction (HCI) Group at the Canadian Astronaut Program. In addition, she served on the NATO International Research Study Group (RSG-10) on speech processing.
In preparation for a space assignment, Ms. Payette studied Russian and contributed to microgravity science experiments aboard various parabolic aircraft (KC-135, T-33, Falcon-20, DC-9) where she logged over 120 hours of reduced gravity flight time, both as experiment operator and test subject. In the fall of 1995, Ms. Payette undertook military jet training at the Canadian Air Force Base in Moose Jaw, Saskatchewan, where she obtained her captaincy and logged 95 hours on the Tutor CT-114 jet aircraft. In April 1996, Ms. Payette completed a deep-sea diving suit training program in Vancouver BC and was certified as a one-atmosphere diving suit operator (NEWTSUIT Level 2 Pilot).
Discovery docked at the PMA-2 end of the International Space Station PMA-2/Unity/PMA-1/Zarya stack. The crew transferred equipment from the Spacehab Logistics Double Module in the payload bay to the interior of the station. Tammy Jernigan and Dan Barry made a space walk to transfer equipment from the payload bay to the exterior of the station. The ODS/EAL docking/airlock truss carried two TSA (Tool Stowage Assembly) packets with space walk tools. The Integrated Cargo Carrier (ICC), built by Energia and DASA-Bremen, carried parts of the Strela crane and the US OTD crane as well as the SHOSS box which contains three bags of tools and equipment to be stored on ISS's exterior.
The STS-96 payload bay manifest:
On May 30 at 02:56 GMT Tammy Jernigan and Dan Barry entered the payload bay of Discovery from the tunnel adapter hatch, and made a 7 hr 55 min space walk, transferring equipment to the exterior of the station.
On May 31 at 01:15 GMT the hatch to Unity was opened and the crew began several days of cargo transfers to the station. Battery units and communications equipment were replaced and sound insulation was added to Zarya. Discovery undocked from ISS at 22:39 GMT on June 3 into a 385 x 399 km x 51.6 degree orbit, leaving the station without a crew aboard. On June 5 the Starshine satellite was ejected from the payload bay. The payload bay doors were closed at around 02:15 GMT on June 6 and the deorbit burn was at 04:54 GMT. Discovery landed on runway 15 at Kennedy Space Center at 06:02 GMT.