ZK-CKJ was cancelled from the New Zealand register in January 1969 as sold in Australia. It was likely in Australia for conversion to a 400hp engine by Aerosmith as part of the development of new model. That project was cancelled in favour of a 400hp conversion designed by Australian agricultural operator Pay's Air Services. ZK-CKJ was restored to the New Zealand register in December 1969 without ever gracing the Australian register. It received a 400hp engine in NZ in May 1970, to become a FU-24-950M, and crashed at Rotorua in March 1973.