500 – 600 nautical miles in a light piston engine twin – get real. This is the domain of fan-jets. If you propose to travel back and forth over such distances on a regular basis you need to think about cruising at speed, above the weather, in a low noise environment with toilet and galley.
A bottom end fan-jet will convert a nine-hour round trip Partenavia ordeal into a three and a half hour cake-walk, provide an aisle for leg stretching and an environment about twenty degrees cooler.
Look at the Cessna Citation CJ-1 for starters. Forget the tired old hand-me-downs, look at new aircraft with factory warranties for low operating costs. On DOC’s the CJ-1 will kill a Partenavia on cost-per mile.
Most passengers who were stupid enough to reach destination in an old thumper over those distances would be looking at returning on the airlines and demand a refund!
No wonder the industry is ‘stuffed’ in this country!. .
