Today I noticed in a old OAG that in 1980, there was a daily DC-8 flight between Sydney and Wellington.
What I found odd was that the flight operated at the same time every day.
However, on Mondays, Wednesdays and Saturdays, it was operated as Qantas flight 64.
The other four days of the week it was operated as Air New Zealand flight 141.
7:30am-8:55am WLG-SYD TE 141 DC8 TuThuFrSu
7:30am-8:55am WLG-SYD QF 64 DC8 MoWeSa
Now I am fairly sure that Qantas never operated DC-8s so I am assuming this was always an Air New Zealand aircraft flying the route.
I don't know that I have ever seen an instance, however, where a jointly operated flight was marketed as one carrier's flight on certain days of the week and the the other carrier's on other days.
Can anyone provide any information on this flight or arrangement?
Thanks in advance.