Figs.6,7 I 8 N.A.C.A. Aircraft Circular No. 33 … spar3 carry sheet- steel supporting sad- dles. The gravity oil tank, supplied by the engine pump,is between the 3pars.Upper right, Wing stub with plywood covering and marginal caisson; hull fitting with plate for attach- ing brace wires.Junct- ion of lower wing.^elo' left,Structure of chine. Belo*…
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