Helicopters Are Here To Stay: The R.A.F.'s "Go Any Way" Service -- A formation of R.A.F helicopters in flight Andrews Planet Apr. 23 1945 PN Censor Nos.Rising vertically from the ground or rooftop, flying backwards, forwards or sideways, and hovering to drop or pick up passengers, the Sikorsky R4B helicopter, now contributing to the development of an R.A.F. helicopter service, has shown that these aircraft, with till notable advantages for special purposes, will play en important part in Britain's aerial activities after the war. These photographs were taken during training at an R.L.F. school,. end for the first time in history shore helicopters flying and hovering in formation. April 23, 1945.