history, ramblings On this Day in 1923 9 January 2023 Keith Our monthly look at what happened 100 years ago. This day, 9 January 1923 saw … The maiden flight of the first rotorcraft, Juan de la Cierva’s Cierva C.4 autogyro, in Spain. It was first demonstrated to the military on 31 January that year. Photo from Jeff Lewis Aviation
