Mo. Rev. Stat. § 430.020
Every person who shall keep or store any vehicle or part or equipment thereof, shall, for the amount due therefor, have a lien; and every person who furnishes labor or material on any vehicle or part or equipment thereof, who shall obtain a written memorandum of the work or material furnished, or to be furnished, signed by the owner of the vehicle, or part or equipment thereof, and every person who furnishes labor or material on any aircraft or part or equipment thereof, who shall obtain a written memorandum of the work or material furnished, or to be furnished, signed by the owner, authorized agent of the owner, or person in lawful possession of the aircraft or part or equipment thereof, shall have a lien for the amount of such work or material as is ordered or stated in such written memorandum. Such liens shall be on the vehicle or aircraft, or part or equipment thereof, as shall be kept or stored, or be placed in the possession of the person furnishing the labor or material; provided, however, the person furnishing the labor or material on the aircraft or part or equipment thereof may retain the lien after surrendering possession of the aircraft or part or equipment thereof by filing a statement in the office of the county recorder of the county where the owner of the aircraft or part or equipment thereof resides, if known to the claimant, and in the office of the county recorder of the county where the labor or material was furnished. Such statement shall be filed within one hundred eighty days after surrendering possession of the aircraft or part or equipment thereof and shall state the claimant's name and address, the items on account, the name of the owner and a description of the property, and shall not bind a bona fide purchaser unless said lien has also been filed with the Federal Aviation Administration Aircraft Registry.
§ 430.020, RSMo
RSMo 1939 § 3608, A.L. 1983 H.B. 805, A.L. 1988 H.B. 950 & 1361, A.L. 2012 H.B. 1150 merged with H.B. 1909 merged with S.B. 485