Originally Posted by LTNman
Don't know how many years Stansted has been officially London's third airport
Officially, I understand, since 1969 when the small new terminal was built on the west side. It had virtually no passenger use for some years apart from Sunday charters to Scandinavia and odd Channel Airways jet charters for a few years. Air UK started a few domestic routes in the 1980s, before the current "new" terminal building opened in 1991.
I believe the 1969 terminal is this building
Google Maps