UnionAir (TWB) had (I think) 2 BN2s and a BN3 in the mid 70s; used primarily for commuting to Orchid Beach on Fraser Is. Fond memories of the front pax leg jamming the pitch trim wheel......
Tangalooma Resort on Moreton Is had one (an all-white BN2) for a while in 98-99, based at BN GA.