Training airplane "Avia B.H. 11."
A 1927 NACA aircraft circular from the NASA Technical Reports Server, issued for technical readers to document the Avia B.H.11 training airplane. The first picture is a side elevation and the second a plan view with dimension lines marked b, c and a, while the third is a photo plate of the aircraft from rear and front three-quarter views. A designer could take the clean, labelled line drawings as a reference for simple aircraft profile and wing-span diagrams.
