Hi,
I've seen theres is interest in our plane and there are some statemants which are a "little" wrong. At first the DO-28 takes just 10 minutes to go up to 15000 ft, it has a larger door than Twin Otter, no stall problems at all, a wheel to wheel time less than 15 minutes, an enviroment certification because of low noise and it brings more people up in a day than every Cessna Caravan without 2 hour lunch break!
On some weekends we have two of them running, like we do in Alvor Portugal (our winter DZ).
The maintenance is not expensive. It has Chech turbines which are cheep to handle.
Any Questions ? http://www.do28-flugcharter.de/