Delivered to United Airlines as N7217U in February 1961 and passed to Alaska Airlines in May 1974, reregistered N304AS the following month and wfu in November 1975. Became N421MA with Aviateca in April 1977, going to Southeast Airlines in August 1978, then to Santo Domingo de Aviación in 1980 and finally Hispaniola Airways in February 1982 (as HI-401 from July). Stored at Puerto Plata from January 1984 and later broken up