alternatehistory.com

I am considering writing a timeline about SSTs replacing most subsonic jets in the 1970s, at the very least for transoceanic flight. I would love to have them replace subsonic aircraft for transcontinental flight as well, but that would require making the issue of sonic boom regulation go away, which seems to be the major thing killing SSTs, apart from short range. What could be done to make SSTs not only a reality for the 1970s, but the dominant form of passenger transportation on long haul flights, with subsonic aircraft flying the shorter routes and 747s relegated to the role of cargo aircraft?
Top