The object of the tests on the Materiel Division 55 foot cantilever all-metal wing was: 1. To determine its ultimate strength in high incidence for comparison with the strength indicated by the stress analysis. 2. The determination of the torsional characteristics of the complete wing. 3. The determination of contribution of the leading and trailing edges to the beam and the torsional rigidity of the wing. 4. The determination of the distribution of stress in the flanges of the wing due to chord, beam, and torque loads.