Riley
This type of seat has been in use for a very long time and I think it has an excellent record. I am sure if any 'design faults' had been found since this accident there would have been swift action to address them
Apparently its been a 'known' weakness for a long long time, I say apparently because that's third hand from some one who has been directly briefed from the BOI. The report when published openly, will obviously fill in the gaps.