Families of the 29 military personnel killed in the 1994 RAF Chinook crash on the Mull of Kintyre have asked Prime Minister Andy Burnham to order a new independent review of the disaster, delivering a letter to Downing Street that frames their case as an early test of the newly enacted Hillsborough law and its legally enforceable duty of candour — a requirement that public officials be transparent and forthcoming during investigations.

The Chinook Justice Campaign (CJC), which includes more than 55 family members of 25 of the 29 victims, is asking for a review that operates independently of the Ministry of Defence (MoD) and has full access to all relevant documents about the Chinook helicopter's airworthiness — whether the aircraft was safe and fit to fly — and the circumstances leading up to the crash. Matt Tobias, whose father Lt Col John Tobias was killed, urged Burnham to meet the families within his first 100 days in office to present evidence and explain why a fresh, MoD-independent review matters. Tobias said the previous prime minister denied the Chinook families both a meeting and an inquiry The Guardian.

The RAF Chinook HC2 helicopter crashed on the Mull of Kintyre in south-west Scotland in June 1994 during a flight from Northern Ireland, killing all 29 serving military personnel on board. The two pilots were initially blamed for the crash but were cleared after an inquiry in 2011, which did not determine the cause. That review was ordered by then Conservative defence secretary Liam Fox.

Fox has since escalated his own public involvement. In approximately June 2026, he said there were "deep concerns" that "vital information" could have been withheld and that there was a "strong enough belief" a deliberate cover-up had taken place. Fox also said details provided by the MoD on the airworthiness of the Chinook that crashed were "not correct" The Guardian.

The families' appeal to Burnham follows a legal setback in July 2026, when a High Court judge ruled that families of several victims could not bring a legal claim against the MoD because it had been brought too late. The judge stated that "cogent grounds" would be needed to bring the case Sky News. The CJC said it would take the case to the European Court of Human Rights following the ruling.

The families' letter to Burnham states the case could be a "test case" for the new Hillsborough law, which was unanimously backed by MPs in July 2026 and creates a legally enforceable duty of candour compelling public officials to act transparently during investigations. The law's application to a military aviation disaster dating back three decades would test the statute's reach beyond the policing and public-safety contexts that originally motivated it.

The CJC's request for full document access builds on a longer campaign trajectory. In May 2025, families demanded access to sealed documents relating to the disaster The Guardian. A House of Commons debate on the crash was held in November 2025 Hansard, and the Commons Library published a research briefing on the disaster the same month House of Commons Library. A Freedom of Information request for Mull of Kintyre Chinook crash records was resolved by the National Archives in February 2026.

The broader context here is a collision between an institutional record that has shifted over time and a legal framework that may now demand a different standard of transparency. The 2011 inquiry exonerated the pilots but left the cause undetermined. Fox, the defence secretary who commissioned that inquiry, is now publicly contesting the accuracy of the MoD's own airworthiness disclosures. If those disclosures were "not correct," as Fox states, the question is whether the new duty of candour can compel a retrospective accounting that the civil courts, on procedural grounds, have declined to entertain.

The families' strategy is notably multi-pronged: a political appeal to a newly installed prime minister with a documented interest in accountability structures (the Hillsborough law being his own legislative initiative), a prospective filing at the European Court of Human Rights in Strasbourg, and the invocation of a statutory transparency duty that has not yet been tested in this context. Whether Burnham refers the matter to an independent reviewer or treats the Hillsborough law's duty of candour as sufficient to reopen the evidentiary record will signal how broadly the new statute is intended to reach.

What gives the families' case its political traction is the convergence of accumulated parliamentary attention, a former defence secretary's allegations of withheld information, and a legal instrument designed precisely for situations where public officials are alleged to have failed in transparency. The MoD has not yet publicly responded to Fox's specific claims about incorrect airworthiness information, and the department's position on a fresh independent review has not shifted since the High Court ruling.

The 1994 crash remains the RAF's worst peacetime aviation disaster. Thirty-two years on, no cause has been formally determined, and the institutional actors central to the original investigations are now the subject of allegations from within their own ranks.