While VH-JJT was backtracking on runway 13 at Gove after conducting an instrument approach, VH-NJN became visual on final approach, also for runway 13. The airport safety officer reported that NJN continued the approach until very late final before executing a missed approach.
The crews of both aircraft were in radio contact with each other on the Gove MBZ frequency. After landing, the crew of JJT advised the crew of NJN that JJT was backtracking on runway 13 and would shortly be clear of the runway. The pilot in command of NJN elected to continue the approach, anticipating that JJT would clear the runway in sufficient time to permit NJN to land. When it became apparent that JJT would not be clear of the runway, the pilot in command of NJN discontinued the approach.
Examination of the Flight Recorder data from NJN revealed that the vertical separation between the aircraft during the missed approach was not less than 300 ft.