I'm having trouble opening Airsound's link, which produces mainly blacked out pages interspersed with occasional readable ones. Is this a problem at my end or simply security redaction?
As I understand it this was a civilian registered aircraft, hence subject to the civilian regulator rather than the MAA, and subject to AAIB investigation primarily. Is that correct?
The aircraft was being operated for Boscombe Down and included a Service pilot, hence this SI. Is that correct?
As to airworthiness, it has been said repeatedly on this forum, "Implement the Regs". No amount of huffing and puffing, or creating new "independent" authorities will gainsay that. The UK military air fleet is riddled with unairworthiness because that simple requirement was not adhered to.