Got me curious how often this happened.
Last example I can find of a CVR being overwritten and not just exploded/missing was in 2018 for an engine fire, similar to this where the flight had to emergency land shortly after take-off. Before that...well a lot of complete failures ("not operative at time of flight") but not many like this scenario.
https://en.wikipedia.org/wiki/List_of_unrecovered_and_unusab...