Operation Close Encounter in 1983

Summary

In July 1983, the Mascot Area Approach Control Centre reported a series of unidentified radar contacts, with movements consistent with aircraft. Technicians concluded they must be man-made objects. This led to Operation "Close Encounter," where Mirage interceptors were deployed to investigate. After days of surveillance and analysis, it was discovered the contacts were caused by radar interference, not real objects. The operation highlighted the collaboration of air defense controllers and technicians, though it proved costly in time and resources.