Recently, Jim Logajan posted:

Maybe I'm misreading this, but it looks to me like Oregon requires any
general aviation pilot who flies into or through Oregon must then
register with the Oregon Department of Aviation within 60 days. Unless
they have some other meaning for "operating"?

As I read it, if you are flying to Washington from California, and make a
fuel stop in Oregon, you then have to register within the 60 day period.
However, it seems to me that enforcement would be practically impossible
in such a case. It would be interesting to see if this rule could really
hold up in court should they try to enforce it.

Neil