That link pretty much tells the story.
I lived on Sixth, across from Balboa Park, about six blocks from the flight path. I never completely got used to seeing planes that low over the apartments under the flight path.
Planes were much noisier then. I don't see how anyone could stand living right in the flight path back then. Rents were cheap in those apartments, but I don't think they could ever have been cheap enough for me to live there. And there was a school right in the flight path, as I recall. The only way that would have made sense was if it had been a school for the deaf, but no, it was more a school for the soon-to-be-deaf.
Funny but true: in Balboa Park, right under the flight path, is an outdoor amphitheater. I don't know if they still have to do it, but back when jets were so much louder than they are now, during a play or musical performance they would have to stop whenever a jet went over. As the plane got close, a crew member would hold up a stop sign (which looked like a traffic stop sign) and the action would stop until the plane had gone over. It was looked upon with humor more than annoyance by the audience. There were fewer flights then, so it didn't happen constantly.