https://www.youtube.com/watch?v=hzhP3Q5fku8
Starship SN10 stuck its landing on 3 March 2021, then exploded minutes later on the pad after a hard touchdown crushed legs and skirt structure.
Elon Musk said a Raptor likely ingested helium from the methane header tank, cutting thrust so impact speed reached ~10 m/s — the helium pressurant fix that had been meant to prevent earlier ullage collapse.