Our airport went through that a few years ago. I can't come up with the
reg's, but my understanding is that property on a federally funded airport
must be used for aviation related themes. We had people using hangars as
workshops for their auto racing teams, people storing boats, etc. If you
have an aircraft in the hangar, the airport doesn't have any problem with
you storing odds and ends there in addition to the aircraft.

That's the same approach our airport takes, and I think it's
appropriate. Heck, we've got a TON of stuff in our hangar, and no one
cares -- just so long as we keep an airplane in there, too.

For a while, we had a guy storing used hospital equipment in a hangar.
He also had another hangar in which he kept his plane(s). Every year,
he would ship all of this used hospital equipment to Nicaraugua, or
Haiti, or some other incredibly needy place, all at his own expense.

Although it was a wonderfully charitable thing to do, eventually he ran
afoul of the "must have an airplane in the hangar" rule, and he removed
all the stuff. It was an ugly political thing, though.
--
Jay Honeck
Iowa City, IA
Pathfinder N56993
www.AlexisParkInn.com
"Your Aviation Destination"