Mo. Rev. Stat. § 305.800: Definitions.

As used in sections 305.800 to 305.810, the following terms mean:

(1) "Abandoned aircraft" , an aircraft left in a wrecked, inoperative, or partially dismantled condition at an airport; or an aircraft that has remained in an idle state at an airport for forty-five consecutive calendar days without a contractual agreement between the owner or operator of the aircraft and the airport for use of the airport premises;

(2) "Airport superintendent" , the person or group of people authorized to make decisions on behalf of an airport;

(3) "Derelict aircraft" , any aircraft that is not in a flyable condition, does not have a current certificate of airworthiness issued by the Federal Aviation Administration, and is not in the process of actively being repaired.