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February 6, 1998

John McNamee
Mars Surveyor 98 Project Manager

Orbiter and lander integration and test activities are proceeding on schedule with no significant problems. The Mars Volatile and Climate Surveyor (MVACS) payload integration and functional checkout on the lander spacecraft is complete. The flight Surface Stereo Imager (SSI), Meteorology package (MET), Robotic Arm (RA), Robotic Arm Camera (RAC), and engineering model Thermal and Evolved Gas Analyzer (TEGA) are installed on the lander. A data transfer problem was found in the SSI instrument and the lander Command and Data Handling Subsystem interface. The SSI electronics card is being modified to resolve the discrepancy. The flight Mars Descent Imager (MARDI) instrument will be installed on the lander on February 10 completing the lander payload integration activities until the flight TEGA is available for installation.

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