Flew around there on the 22nd (GMMN-DXXX via GAO) and I had my thoughts about not beeing allowed to climb above 400 (as per NOTAM). My kite can go to 470 (which we use very seldom, got to burn lots of fuel) but we regularly criuse at 430. The difference is often signifcant.We were very lucky, the ITCZ had taken a day off, nothing but sunshine and haze down low....