I see from
http://www.indigosat.com/mam.aspx that the MAM Airvan made it to Hilo Hawaii at about 12:40 pm OZ EST (00:40 UTC).
How I wish there had been tracking systems like that when I was a Chief Pilot fretting about were my birds were. Luxury.
I found some more historical stuff about Around the World Flights at
Earthrounders: round the world flights in light aircraft
It seems that only 20 (their count or 21 my count) OZ based flights have been made in GA/Recreational type aircraft. Some of these were by repeat offenders, such as Dick Smith and John Johanson, making at total of only (my count) 14 First pilots. A pretty exclusive club.
Surely somebody did it a Nomad???