Berlin Tegel Airport European headquarters from Frankfurt to Berlin on 1 May 1984. Pan Am began introducing widebodied aircraft on its Berlin routes in the mid-1980s. Up to four Airbus A300s replaced 727-200s on Berlin–Frankfurt. The A300s were subsequently replaced with Airbus A310s. The longer-range A310-300s that joined Pan Am's fleet from 1987 enabled reintroduction of non-stop, daily Tegel–JFK scheduled services. Pan Am Express, the regional commuter arm of Pan Am, began operating from Berlin Tegel in November 1987 with two Avions de Transport Régional (ATR) 42 commuter turboprops. It operated year-round scheduled services to secondary and tertiary destinations that could not be
Berlin Tegel Airport million. This included Pan Am's internal German traffic rights as well as its gates and slots at Tegel. This agreement, under which Lufthansa contracted up to seven of Pan Am's Tegel-based Boeing 727-200s operated by that airline's flightdeck and cabin crews to ply its scheduled routes to Munich, Nuremberg and Stuttgart until mid-1991, also facilitated Pan Am's orderly exit from the internal German air transport market after 40 years' uninterrupted service as European Union (EU) legislation prevented it from participating in the internal air transport market of the EU/European Economic Area (EEA) as a non-EU/EEA headquartered carrier. However, Pan Am