Video : Chinook Helicopter Crash

On June 2, 1994, a Royal Air Force Boeing Chinook helicopter crashes on the Mull of Kintyre, on the west coast of Scotland. All 29 people aboard die, 25 of them being counter-terrorism officers who battled the IRA. The initial investigation cites pilot error as the cause, but several more investigations take place over the next 17 years before this verdict is overturned.