The centre section was rectangular in plan and the outer panels were straight-tapered, square-tipped and constantly decreased in thickness outwards.
[1] The fuselage of the B-117 had a rectangular cross-section defined by four spruce longerons and was entirely ply-covered over its central part, though elsewhere the upper and lower surfaces were canvas covered.
[1] The B-117 was powered by a pair of 300 kW (400 hp) water-cooled Lorraine-Dietrich 12D V12 engines cooled with Vincent André radiators mounted on the undercarriage legs.
The nacelles extended rearwards just beyond the wing trailing edge, where each housed a gunner with a flexibly-mounted machine gun.
[3] It did not reach production but was developed into the B-127, which had a very similar layout and dimensions though with more powerful engines and a single fin and rudder.