Aircraft owned by any government agency are exempt.
Aircraft owned and registered in a foreign country are exempt.
Aircraft owned by a non-resident, and registered in another state, provided the aircraft is not in this state for more than 90 days. Aircraft engaged in a commercial act of interstate commerce. Aircraft owned by a commercial manufacturer being operated for test or development purposes. Aircraft being held for sale, exchange delivery, test, or trade in. This page is maintained by Graphic Communications , Washington State Department of Transportation.