Jochen Rindt's fatal crash
Which other drivers suffered fatal accidents during qualifying? (i know of three.)
EDIT - I 'm afraid that's a boring question I put up there some minutes ago, so I'd prefer to replace it with a more specific one:
Same track, same year (Brands Hatch in 1971) - Ronnie Peterson was indirectly involved with another crash of another driver, that also occurred due to failure of a part. Sadly, that driver was not lucky.
What was his name, which part failed, and how was Peterson involved?