Twenty KB-3 Chuchuligas delivered from manufacturer in 1937-1938.
Improved version of KB-2A with Walter Castor II radial engine.
Used for advanced pilot training. Date withdrawn from service
not known. The 16th aircraft (c/n 40, LZ-CIP) was retained to
act as the prototype for the KB-5 with Piaggio P.VII C.I radial
engine and longer fuselage.
