The only prototype of Caproni Ca.120 (M.M. 210) crashed at Montecelio on July 10th 1934, causing the death of the entire crew, included Domenico Antonini, Caproni test pilot (I retrieved this info in the recent book "Alcioni, Cicogne, Sparvieri e Picchiatelli - Storia critica dei bombardieri italiani" by G.C. Valdonio). Further development of the project was halted.