and wind direction information via wiring harness 77 from a typical externally mounted directional wind speed indicator allowing a wind adjustment program 76 to correct the determined aircraft weight by previously measured weight errors compared to wind speed and wind direction wind speed and wind direction corrections are stored in the wind adjustment program 76 one method of developing wind speed correction is by placing the aircraft behind the engine prop blast of a large turbo prop aircraft such as a military c 130 a single or multiple c 130 aircraft will generate an external wind tunnel by increasing engine thrust wind speed indicators are placed at the aircraft 39 s wing tips as the aircraft weight and center of gravity measurements are taken at different wind speeds these weight and center of gravity measurements are related to various measured wind speeds and stored in wind speed adjustment program 76 the aircraft is rotated 15 degree and the weight and center of gravity measurements are again related to various wind speeds which are now crossing the aircraft at a different angle the aircraft is rotated through a complete circle on 15 degree increments to measure the affects of wind from all directions various weights are placed within the aircraft to insure the wind speed adjustments are measured at the full range of potential aircraft take off weights these stored values can be referenced for a particular wind speed and direction offset this offset can be used to correct weight measurements using.