The switch from using Berlin Templehof to Berlin Tegel on September 1, 1975 concentrated all the remaining IGS routes at the more distant airport. Although the fleets dedicated to the IGS routes of both Pan Am and British Airways were reduced from their heyday they were still important to both airlines. The 1980s would bring about a rebirth of competition that would challenge the status quo until the reunification of Germany itself made the IGS obsolete.
The Douglas DC-4 originated from the unrelated first DC-4 (which was renamed the DC-4E) that had proved too complicated and lacking in performance prior to World War Two. The advent of the war interrupted the new DC-4s use as a commercial airliner and after the first prototype was constructed nearly 1,170 came off the production lines for the military in a large number of variants. The basic types were named the C-54 Skymaster (for the USAAF) and the R5D (for the US Navy).
I'm Richard Stretton: a fan of classic airliners and airlines who enjoys exploring their history through my collection of die-cast airliners. If you enjoy the site please donate whatever you can to help keep it running: