Dorado Wings was a small commuter airline that operated from Luis Munoz Marin International Airport in San Juan, Puerto Rico to Dorado Airport in the tourist center of Dorado. Dorado Wings was the only commercial operator at Dorado Airport. Dorado Wings existed from 1964 to 1982. In early 1981, the airline was purchased and its name was changed to Crown Air which operated until 1988.

Based on that paragraph can we conclude that this sentence is true?
Dorado Wings was in business for 18 years.
Yes