The aircraft was on final approach to Lindbergh Field on a clear morning on Sept. 25, 1978, when it collided with a small private plane and plowed into a residential neighborhood.
The 135 passengers and crew on the jet, two occupants of the Cessna aircraft and seven people on the ground died. Many of the victims on the flight from Sacramento, with a stop in Los Angeles, were PSA employees heading to the company's San Diego headquarters.
The collision prompted changes in air traffic control rules and led to the creation of improved aviation technology.
A group of relatives of victims of the crash is working to establish a memorial in North Park near the crash site.
According to a recent post on the PSA Flight 182 Memorial Facebook page, organizers have decided against placing the memorial at the triangle of Boundary, Dwight and Felton streets because of opposition from neighbors. The post says they're looking for other locations nearby.