Mo. Rev. Stat. § 155.050
The state tax commission shall apportion the aggregate value of the commercial aircraft of an airline company, as determined under the provisions of section 155.040, to each county, municipal township, city, incorporated town, special road districts, library districts, school districts which levy taxes for library purposes pursuant to section 137.030, public water supply, fire protection and sewer districts or subdivisions, except other school districts, in which the airline company has arrivals and departures of its commercial aircraft. This apportionment shall be made on the ratio which the number of arrivals and departures of its commercial aircraft within the political subdivision of this state bears to the total number of arrivals and departures of its commercial aircraft within this state during the immediately preceding calendar year, except that when any municipality in this state owns and operates an airport outside its corporate limits, the valuation determined hereunder shall also be apportioned to such municipality.
§ 155.050, RSMo