Official Sikorsky Aircraft photo. Original caption reads "S-64E Skycrane helicopter, built by Sikorsky aircraft, is shown delivering heating unit to roof of plant near Pittsburgh, Pennsylvania. Skycrane installed 263 such units in six days. The builder estimated that it would have taken approximately one year using conventional methods". Built in 1968 the helicopter was still active in 2023.
This photo was added on 13 July 2023, and has since been viewed 251 times.