On 11 February 1990 the brigade managed to shoot down a British Army Gazelle helicopter near Clogher by machine gun fire and wounding three soldiers , one of them seriously . The helicopter was hit between Clogher and Augher , over the border near Derrygorry , across the border . The Gazelle broke up during the subsequent crash-landing
brigade managed to shoot down
1990 British Army Gazelle shootdown
Provisional IRA East Tyrone Brigade