The 1994 Scotland RAF Chinook crash occurred on 2 June 1994 at about 18:00 hours when a Royal Air Force (RAF) Chinook helicopter (serial number ZD576, callsign F4J40) crashed on the Mull of Kintyre, Scotland, killing all twenty-five passengers and four crew on board. Among the passengers were almost all the United Kingdom's senior Northern Ireland intelligence experts. It was the RAF's worst peacetime disaster.