"Bill Denton" wrote in message
...

So let's look at it this way: how long could the airplane sit without
incurring extremely excessive wear or situations that would make the
airplane even slightly unsafe to fly?

Quite honestly, if you are willing to accept the maintenance cost, it can
sit for a month or more. Many airplanes do not fly all winter. It helps if
the hangar is dry, etc.

I have seen airplanes, literally covered with moss, which have been sitting
outside in the grass for over a year in the moisture laden Puget Sound
region. Pump up the tires, check the battery, oil, and gas and get three
strong men to pull the plane out of the holes the landing gear made, and it
starts up and flies just fine. Granted, the plane needed an annual, but
there was nothing particularly unsafe about it. The cylinders showed no
corrosion.