Excuse the blur but it was hand-held after dusk!! Point is that it's an L188 Electra, forced to serve out its days carrying cargo at night. Sydney then (as now) had a curfew on jets so "quieter" prop-driven aircraft did the night-time shifts. It extended the life of this Ansett Electra, which was retired from passenger duties in the early 1970s. I remember both TAA and Ansett Electras swooping in from the south, joining the 16 approach quite late, over Marrickville or even Sydenham in order to 'nip in' before a bigger jet. They often soared over my head, one following the other in the 2-airline parallel timetable days.