Here are your clues! Please post your answer in the DAC forum thread. Good luck!
1) I have more than 2 engines.
2) My home base is in the Southen Hemisphere.
3) I have a long history since the early 1930s, but I no longer exist.
4) Other than the neutrals, my livery is pretty much 1 colour.
5) I did a major international expansion on the 1990s with this aircraft flying routes to U.S/Canada, Europe, and even Japan!