June 2, 1999, with two daily RJ85s supplemented by an afternoon DC-9. All flights from DTW. About a year later NW switched to an all-DC-9 schedule, but since 9-11 XJ has returned. They use Continental's old jetway at PWM. I had the privilege of being a conract ramper there for about a year and a half after NW started service. The RJ, though having rather petite bins, was a pleasure to work on. Even a joy to clean, with such generous seatpitch.