Robert M. Gary wrote:
As far as I know only NJ has such a rule. My Champ had a key for the
door and another key for the mags. If yours is the same, you're good
to
go.

We had a J-3 Cub in New Jersey. It was in the hangar, so we got a
propeller lock. Our airport manager requires that all airplanes have
prop-locks. They are provided by the airport for about $40.

....richie