On 31 August 1954, Lieutenant James O’Farrell, flying a Hawker Sea Fury from Nowra, reported two lights crossing ahead of his aircraft, with a radar contact. The Australian Defence Department kept a file. The object identity was never settled.

Nowra matters because it is a named Australian military radar-visual case with an official file — a southern-hemisphere counterpart to the early military radar cases.
Lieutenant James O’Farrell was flying a Hawker Sea Fury from Royal Australian Naval Air Station Nowra when he saw two powerful lights cross ahead of his aircraft.
Documented
O’Farrell’s report is documented.
A radar contact was reported. The correlation between the radar return and the visual report is part of the official file.
Documented
The radar contact is documented.
The Australian Department of Defence and Directorate of Naval Intelligence kept a file. The object identity remains disputed.
Debated
The object identity is disputed.
The case rests on a single pilot’s report and the official file. No photograph is established.
Unverified
Any extraterrestrial origin is unverified.
These sources do different jobs: the Defence Department file is the official record, and the later literature is secondary. Neither establishes the object identity.
The official Australian file.
A later treatment, recorded as secondary.