Junkers Ju-52 'Tante Ju' (Aunt Ju) and 'Iron Annie'.
Photo by Bob Nelson

Ju 52/3m (drei motoren Ñ "three engines"). Originally powered by three Pratt & Whitney R-1690 Hornet radial engines, later production models mainly received 770 hp BMW 132 engines, a licence-built refinement of the Pratt & Whitney design. -wik