
The six-seat cabin was unpressurized; the nose-wheel landing gear was retractable with the main wheels stored into the sponsons. The sponsons were attached to stubs and from these stubs two struts supported the wing where they connected at the twin-booms.

Also an Avalon Twin Star 1000 and a military A-1200 Guardian have reportedly been designed, but except for the Avalon 680 prototype no further aircraft have flown.


Information and pictures from 1000aircraftphotos.com
And here's a three-view from the "Air International" (1982-10):
