De Havilland Canada DHC-3 Otter, 9-10 passengers, max range: approximately 945 mi (822 nm, 1,520 km). Payload: variable depending on configuration, but safely around one-ton (2,000 lbs, 900 kg.). The "Otter" is commonly equipped with floats, and less commonly on amphibious floats.
Or better yet, a De Haviland DHC-6 Twin Otter. Google it.
If you want an Australian built aircraft with an Indonesian connection, the rare GAF Nomad N22 comes to mind; Range: 730nmi / 1352km, endurance 8 hrs at 140kt / 259km/h, at 5,000 ASL.
Last edited by evansb; 5th Dec 2018 at 15:16.