On 27 August 2007, a Piper PA-31P Navajo aircraft, registered VH-SGA, with a pilot and a survey equipment operator on board, was being operated on an aerial survey 21 NM west of Mildura, NSW. At 5,000 ft altitude and operating under the visual flight rules, the pilot noticed an electrical burning smell, which was confirmed by the survey equipment operator.
The pilot, although affected by the fumes, was able to conduct a successful landing at Mildura aerodrome and reported to Air Traffic Services when safely on the ground. The aircraft was examined by a Licensed Aircraft Maintenance Engineer at Mildura. The right engine alternator 'inoperative' sensor was replaced.
As a result of this occurrence, the aircraft operator initiated safety actions to prevent a recurrence.