Perhaps other old Ppruners can chime in with BN3 history. Eagle airways operated theirs from Bankstown on charter & freight mid 1970s. Sopac Aviation operated commuter services Cessnock,NSW, to Sydney & return a few times a day in 1979. Burnett Airways used theirs on commuter flights all ports to SW Queensland from Brisbane....imagine in hot summer in SW Qld bouncing around in a Trislander. Bush Pilot Airways (aka Bushies,aka BPA) bought out Burnetts around 1977 & consequently inherited the Tris,which were then based Cairns & Townsville where they serviced Lizard Island,Cooktown,Dunk Island,Palm Island,Bowen,Shute Harbour,Brampton Island & Mackay. Eventually these services were replaced by Twin Otters & the 4 BN3s were exported in 1981.