Airplanes - Inspection - View of final test building showing air ducts over stands to carry away the fumes and much of the noise of the exhaust. In the center of this view is shown a motor being lowered on to a dynamometer test stand after being brought to this point by the monorail system. Curtiss OX-5 Training Plane Motors. The Willys-Overland Company, Emira N.Y. Plant