Also, IIRC, on older design seats, the shackle bolt was shouldered and could not be over-tightened as such.
sugarplum,
That's very interesting. I've always been interested in ejection-seat mechanisms, doubly so since I rode a live seat many years ago, in a Vampire T11. So when I read the report about the Scampton accident, I found it hard to believe that anyone would design the shackle without a shouldered bolt.
Two general questions about Safety Cases. I've just looked them up on Wiki and ended up more confused than before.
When were Safety Cases introduced into the RAF?
Is there a public domain Safety Case that I can read?