During the early 1980s Air Ecosse had a contract to move boxes of ‘glow sticks’ around the UK and parts of Europe. Usually operated by EMB 110, but at least once with the 3-30. Normal run was to Abingdon, occasionally Luton. Various places in Germany too. Yes the runway was rough - worse than Tiree, but it was just long enough. Always one passenger, a retired policeman who packed a revolver.