The Yeoman YA1 was a cropduster developed in Australia from CAC CA-6 Wackett trainer. Very little of the Wackett remained in the end. VH-SWC did return to the skies after this photo but was withdrawn from use in 1975. It is believed to be still in existence and of potential benefit to putting a Wackett back in the air. The YA1's wing is metal. Concerns about the Wackett's glued plywood wings had seen their operation restricted in the 1960s.