https://en.wikipedia.org/wiki/Pacific_Southwest_Airlines_Flight_182
Pacific Southwest Airlines (PSA) Flight 182 was a Boeing 727-214 commercial airliner, registration N533PS, that collided with a private Cessna 172 light aircraft, registration N7711G, over San Diego, California, at 9:01 am on Monday, September 25, 1978.It was Pacific Southwest Airlines' first fatal accident, and the deadliest air disaster in California history.