Serious incident to the Airbus A330 registered VH-EBJ and to the Boeing 737 registered VH-VZO operated by Qantas on 05/08/2019 at Sydney [Investigation led by ATSB / Australia]

Preliminary data based on the notification from the Australian authorities:

During approach to runway 34R, the Boeing 737 was issued a late instruction to conduct a missed approach. During the climbing turn, lateral separation was reduced to 0.4 NM with the outbound Airbus A330, in a climbing turn on a converging track.

The crew of the A330 subsequently received a TCAS TA.