Model Variants (Including Prototypes)
B18 - Base Series Designation
Model 18A - Prototype of the B18A production model; Pratt & Whitney radial engines fitted; two prototypes completed.
B18A - Original production model; medium bomber form with Pratt & Whitney radial engines; three-man crew; 62 examples completed.
S18A - Photo-reconnaissance conversion models of the B18A stock; fitted with PS-18/A radar; 62 examples converted.
B18B - Dive bomber variant; Daimler-Benz inline engines fitted for greater power; bomb load increased to 3,300lb; provision for attack rockets added; 119 examples completed.
T18B - Torpedo bomber variant; becoming ground attack form armed with 1 x 57mm and 2 x 20mm cannons; 52 examples completed.