Wyo. Stat. § 35-7-373: Registration of aircraft.

(a) Any person engaged in the activity or business of applying pesticides utilizing any type of aircraft shall register each aircraft annually with the Wyoming department of agriculture, on a printed form provided by the department. The registration shall include the following:

(i) Manufacturer, model and type of aircraft;

(ii) Identification number assigned to the aircraft;

(iii) Owner of the aircraft; and

(iv) User of the aircraft if different from the owner.

(b) The fee authorized by W.S. 11-1-104 shall be charged to each person registering aircraft. Aircraft shall be registered on or before April 1 of each year.