Despite the model-observation discrepancy surrounding the ozone concern, in the mid-1970s, six years after its first supersonic test flight, Concorde was now ready for service. The US political outcry was so high that New York banned the plane. This threatened the aircraft's economic prospects — it had been built with the London–New York route in mind. The plane was allowed into Washington, D.C. (at Dulles in Virginia), and the service was so popular that New Yorkers were soon complaining because they did not have it. It was not long before Concorde was flying into JFK.