This image was acquired from
flickr. It was marked as Public Domain or CC0 and is free to use. To verify, go to the source and check the information there.
Keywords from Image Description:
sdasm aviation aeronautics aircraft gyrodyne rotary wing rotarywing helicopter nk gyrodyne model gyrodynemodelc model modelc pratt amp whitney prattwhitney pratt amp whitney prattwhitneyr gyrodyne gyrodynec blackandwhite monochrome black and white Catalog Manufacturer Gyrodyne Designation Official Nickname Notes Repository San