Or. Rev. Stat. § 837.005

      837.005 Exemptions of certain aircraft from requirements of registration; rules. ORS 837.015 and 837.040 to 837.070 do not apply to:

      (1) Aircraft owned by any person, firm or corporation and certificated by the appropriate federal agency for domestic or foreign scheduled air commerce;

      (2) Military aircraft of the United States of America;

      (3) Aircraft licensed by a foreign country with which the United States has reciprocal relations exempting aircraft registered by the United States, or any political subdivision thereof, from registration within such foreign country; or

      (4) Classes of aircraft designated as exempt by rules adopted by the State Aviation Board. [Formerly 493.010; 2005 c.22 §520; 2005 c.75 §1]