Boeing 727 / United AirlinesUnited Airlines 727 mahogany wooden airplane model. The first flight of the 727 200 occurred on July 27 1967, with certification granted in late November that year. The 200 was placed into service by launch customer Northeast Airlines (this airline was later acquired by Delta) the following month, by which time total 727 orders for both models had exceeded 500. The 727 200 helped broaden the sales appeal of the 727 considerably and snared significant