Again during the C3 encounter the NIMS instrument stopped due to memory corruption, which is apparently caused by radiation. The first fault occurred just minutes after perijove and operation was restored by the sequenced memory reload two hours later. The memory reloads remain the only known mitigation for this NIMS problem. It has been determined by memory readouts and verified by testbed simulation that there is now a single stuck bit in the PLS memory. So far this is causing only minor problems in the PLS data.
Investigation is ongoing.