By 1981, the company was operating a crop-dusting training school.[2] A special V-1-A Vigilante version of the Thrush Commander was developed in 1989 for anti-drug operations in South America.[3] The company attempted to sell 10 Turbo Thrush aircraft to Iran in 1993, but was unable to receive an exemption from U.S. government sanctions.[4]
In 1996, urged on by Federal Express, development was begun on the Ayres LM200 Loadmaster, designed to carry 7,500 pounds of cargo.[5] The aircraft was to be powered by two 1350 hp LHTEC TP800 driving a single five-bladed Hamilton-Standard propeller through a combining gearbox. To support this development effort, Ayres acquired the LET aircraft manufacturing company in the Czech Republic in September 1998.[6][failed verification][7][failed verification]
In 2001, the company was forced into bankruptcy when creditors foreclosed on it and the Loadmaster program was terminated.[8][failed verification]