PAN AM'S INTERNAL GERMAN SERVICES (IGS)
From 1950 until 1990 Pan Am operated a comprehensive network of high-frequency, short-haul scheduled services between West Germany and West Berlin called the German Internal Service (IGS).
This had come about as a result of an agreement among the United States, the United Kingdom, France, and the Soviet Union at the end of World War II which prohibited Germany from having its own airlines and restricted the provision of commercial air services to and from Berlin to air transport providers headquartered in these four countries.
Initially, flights were operated with Douglas DC-4s, then with DC-6Bs (from 1960) and Boeing 727s (from 1966).
Pan Am operated a Berlin crew base of mainly German flight attendants and American pilots to staff its IGS flights. The airline's West Berlin operation consistently accounted for more than half of the city's entire commercial air traffic during that period.
In the early years, the flights were operated out of Berlin's Tempelhof Airport. In September 1975, all Pan Am flights were moved to the upgraded Tegel Airport.
With German re-unification in 1990, the role of the IGS became superfluous, and the operation was taken over by the German carrier Lufthansa in 1990, which bought Pan Am's routes for USD 150 million.
For more amazing images of Pan Am's operations at Berlin, have a look at our popular photo special Berlin Airport through time.
For a very interesting three-part history on the IGS have a look at this three-part article starting here.
Or read about the design of Pan Am's terminal at New York's JFK Airport here.
Did you fly with or work for Pan Am's Internal German Service? Tell us about your memories below!
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Marnix (Max) Groot Founder of AirportHistory.org. Max is an airport development expert and historian.