A brief period in time when Melbourne-based Skyvan demonstrator VH-FSH (right) joined Patair's duo VH-FNJ and FNI at Port Moresby to cover fleet aircraft maintenance . -PNJ was sold in the US as N64AC in 1973.
VH-PNA was fitted with JATO and at one stage undercarriage doors. The latter were soon removed because of maintenance problems but the JATO pack remained. It is not recorded if it was used outside testing in 1961.