The orbiter should be mated to NASA s Shuttle Carrier Aircraft by 7 p.m. Eastern today. Departure from California is expected to occur at first light Tuesday. Managers will convene the Ferry Readiness Review today at 4 p.m. EDT to assess the flight plan and weather conditions. A tlantis main engine heat shields are installed. Today, Russian engineers are replacing the fixer component on the orbiter docking system.
Work continues on the heads-up display unit in the crew module.
Routine orbiter subsystem tests are ongoing. D iscovery s microwave scanning beam-landing system has completed planned testing. Technicians have also completed replacement of a suspect vernier thruster. Orbiter window No. 7 has been replaced and window No. 4 will be replaced this week. Shuttle main engine installation is scheduled to begin tomorrow and payload premate testing begins Wednesday.