MSL Sol-200 Anomaly

Six months after landing on Mars, uncorrectable errors in the NAND flash memory led to an inability of the Mars Science Laboratory (MSL) prime computer to turn off for its normal recharge session. Ground controllers commanded a swap to the backup computer, leaving the MSL rover with single-string avionics of questionable reliability prior to a Mars solar conjunction. Recovery from the anomaly was possible because of system and mission design features; nine recommendations are provided to mitigate the risk to future missions.

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