R.O. Bone Co. Golden Eagle, NX522, prototype, with Evelyn (Bobbie) Trout, 1929 Published on February 9, 2014 in 10–11 February 1929Full resolution (381 × 266) ← Previous Next → Bobbie Trout with the R.O. Bone Co. prototype Golden Eagle monoplane, NX522. The airplane has had a NACA engine cowling added for better cooling and decreased drag. (Davis-Monthan Aviation Field Register)