Screen Shot 2018-05-26 at 11.45.11 Published on May 26, 2018 in 3 April 1946Full resolution (708 × 554) ← Previous Next → Bell Model 47, s/n 1, NX41962.Bell Model 47 NX41962, Serial Number 1, at Bell’s Wheatfield Plant, early 1946. (Bell Helicopter (Niagara Aerospace Museum)