The Royal Australian Air Force's two Caribou aircraft have retired from service, and will be replaced by the King Air aircraft as an interim measure.
The entire fleet received by ADF between 1964 and 1971 is known for its ability to take off and land on short and unprepared airstrips.
Minister for Defence Personnel, Materiel and Science Greg Combet said the aircraft has served in Vietnam, supported UN efforts in Kashmir, and has seen extensive service in South East Asia and across the South Pacific.
"Age, serviceability and performance issues had started to affect the aircraft's ability to operate efficiently," Combet said.
Following the retirement, one Caribou will be sent to the Air Force Museum at Point Cook, while another will be presented to the Australian War Memorial in Canberra for display.