Boston based Executive Airlines was an off shoot of air taxi operator National Executive Flight Service. Beginning in 1967 with De Havilland Canada Twin Otters and Beech 99s, this former Mohawk Airlines Convair 440 was leased in June 1971. Unfortunately the airline was facing liquidity problems at the time and filed for bankruptcy December 10, 1971. The Convair was re-possessed by the lessor two days later. The airline re-organized financing in 1972, but shut down for good in December 1973.