McDonnell Douglas DC-10 United AirlinesUnited Airlines Douglas DC 10 airplane model. The first version was the DC 10 10, developed for domestic use. Later versions were used for international routes. First flight was on August 29, 1970. After receiving its FAA certificate, it entered commercial service with American Airlines on August 5, 1971. At the same time United airlines started using the DC 10 with a 222 seat configuration, as American was using a 206 seat configuration. Scale 1 100.