EBGB is a small airfield inside the Brussels CTR. The field has its own sector within the CTR, being the Northwestern area. Entry is via point Londi (near Londerzeel) and departure is towards the North. One must stay below 1000 feet, which means approach (and departure) altitude is 900 ft and circuit altitude is 800 ft. To avoid a lot of noise for those who live in the area, pilots are asked to fly with reduced power while in the sector.