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CAPE CANAVERAL, Fla. -- At Launch Pad 39A at Kennedy Space Center, technicians load replacement parts for the Zvezda service module toilet on the International Space Station aboard space shuttle Discovery. The toilet malfunctioned last week and was initially repaired by replacing a microprocessor valve. After the station crew members experienced additional difficulties with the toilet, they were directed to use Soyuz toilet facilities at first and are using the main toilet again after rigging a urine bypass. The spare toilet parts have been added to Discovery’s manifest for delivery to the station on the STS-124 mission. On the 14-day mission, Discovery and its crew will deliver the Japan Aerospace Exploration Agency's Japanese Experiment Module – Pressurized Module and the Japanese Remote Manipulator System. Launch is scheduled for 5:02 p.m. EDT May 31. Photo credit: NASA/Dimitri Gerondidakis