R.I. Gen. Laws § 34-47-3
Any person entitled to a lien under this section shall, within sixty (60) days after last furnishing of labor, money, material, or supplies for the production of, altering, or repairing of the personal property, file in the office of the federal aviation administration aircraft registry a statement in writing verified by oath showing the amount of labor, money, material, or supplies furnished for the producing, storage, parking, servicing, altering, or repairing of the personal property, the name of the person for, and by whom labor, money, material, or supplies, was furnished, and specifying the registration number of the aircraft. Unless the person entitled to the lien files the statement within the time provided in this section, he or she is deemed to have waived his or her rights to the lien; provided, however, that the lien provided for in this section does not attach to any personal property after it has been purchased by an innocent purchaser for value, and has passed into his or her possession, unless the lien has been filed with the federal aviation administration aircraft registry before the property was purchased by the purchaser, or he or she has received written notice, from the party entitled to the lien, of his or her intention to file the lien.
R.I. Gen. Laws § 34-47-3