This is a Grumman G21 Goose that was converted in the 70's to be a McKinnon G21G Turbine Goose. Photo was taken at Sanderson Field in Michigan, USA. Bob Redner of W. Bloomfield, Michigan leaving Sanderson Field in Michigan’s beautiful Upper Peninsula; starting one of the final legs of the 2010 Michigan Air Tour. Special thanks to Josh Eichenhorn for flying the photoship, his 182 RG. Of the 9 Grumman Gooses converted to Mckinnon Turbine Gooses, there are 3 left flying today. 200 mph cruise, 5500 lbs useful load, 7 hour range.