The photographer framed the Pinwheel helicopter (see photo 678360) with this S-51 of the US Forest Service. Other shots show the reg clearly as N155Z but it's not listed by the FAA or anywhere else. From 1960 N155Z was worn by a C-46 Commando that the FAA has also forgotten about. Photo by: Ralph Crane / Life
This photo was added on 18 April 2024, and has since been viewed 93 times.