The Latecoere 6 (which took flight in the summer of 1924) was a sesquiplane, or fixed-wing aircraft with two main wings stacked one above the other with each one providing part of the lift.
Summer 1924 A biplane is a fixed-wing aircraft with two main wings stacked one above the other. Each provides part of the lift, although they are not able to produce twice as much lift as a single wing of similar size and shape because the upper and the lower are working on nearly the same portion of the atmosphere and thus interfere with each other's behaviour. It was a single bay biplane, the sesquiplane arrangement requiring the simple parallel inter-plane struts, streamlined and wide, to lean heavily outwards. 
