Library file dated 04/06/1994 of the wreckage of the Chinook Helicopter which crashed on the Mull of Kintyre killing all 29 on board.. Air Commodore John Blakeley, has accused the findings of the inquiry into the Chinook helicopter crash of being "biased" saying that engineering evidence "was not correctly analysed or followed up", Sunday May 30, 2004. On June 2, 1994, Chinook Mk 2 ZD576 crashed into the Mull of Kintyre killing 25 senior Intelligence Officers and four air crew - the RAF's biggest peace-time disaster. The RAF inquiry into the accident found the dead pilots, Flight Lieutenants Jonathan Tapper and Rick Cook, guilty of "gross negligence" although subsequent investigations raised concerns about the airworthiness of the Chinook sparking a long running campaign by the pilots' families, the Church of Scotland, and politicians - including former Prime Minister John Major - to clear the men of any blame. See PA Story DEFENCE Chinook. PA Photo: Chris Bacon.