X-Plane 10 Scenery--Trim Airfield Full (EITM). Trim is a tiny airfield about 18 km northwest of Dublin, Ireland. The airfield has one runway, 10/28 which is 560 by 12 m (1837 by 39 ft). It is mainly used for GA and balloon flights. Requires OpenSceneryX. By Rene Bruun (Renair).