Wash. Rev. Code § 14.16.090
(1) Any aircraft used to carry persons or property for compensation, or any aircraft that is rented or leased without a pilot shall be equipped with a survival kit consisting of those items prescribed by the department of transportation, which shall include, at least the following:
(2) It shall be unlawful for any person to operate such aircraft without such a survival kit: PROVIDED, HOWEVER, That nothing in this section shall apply to:
[ 1987 c 273 s 2.]