At the AGARD Wind Tunnel and Model Testing Panel meeting in Paris, France, in 1954, it was agreed to add a third model configuration to the family of AGARD calibration models, by extending the body of the AGARD-B by 1.5 diameters and by adding a horizontal and a vertical tail in the T-tail configuration. The horizontal tail has an area equal to 1/6 of the wing area. Sections of the vertical and horizontal tail are circular arc profiles defined identically to the profile of the wing. Forward of the 1.5 D body extension, the geometry of the AGARD-C model is identical to that of the AGARD-B. Also, the position of the moments reduction point (the aerodynamic centre) is the same as on AGARD-B.