2013 ORS § 163.375¹
Rape in the first degree

(1) A person who has sexual intercourse with another person commits the crime of rape in the first degree if:

(a) The victim is subjected to forcible compulsion by the person;

(b) The victim is under 12 years of age;

(c) The victim is under 16 years of age and is the persons sibling, of the whole or half blood, the persons child or the persons spouses child; or

(d) The victim is incapable of consent by reason of mental defect, mental incapacitation or physical helplessness.

(2) Rape in the first degree is a Class A felony. [1971 c.743 §111; 1989 c.359 §2; 1991 c.628 §3]