Pacific Southwest Airlines flight 182, 
                                        service from Sacramento to San Diego via 
                                        Los Angeles, was descending through 
                                        11,000ft on approach to San Diego-Linbergh 
                                        Field shortly before 9:00am on September 
                                        25, 1978. Along with Captain James 
                                        McFeron, First Officer Robert Fox, and 
                                        Flight Engineer Martin Whane, there were 
                                        four cabin attendants and 128 passengers 
                                        aboard the Boeing 727 that day. A few 
                                        minutes later, McFeron reported leaving 
                                        9,500ft and that the airport was in 
                                        sight. San Diego Approach control then 
                                        cleared 182 to make right traffic for a 
                                        visual approach to runway 27.
                                        
                                        ......Also in the air that morning was a 
                                        Cessna 172 on an instrument training 
                                        flight from Montgomery Field, another 
                                        local airport some six miles north of 
                                        Linbergh Field. The flight was 
                                        practicing ILS approaches into Linbergh 
                                        Field's runway 9 which it was completing 
                                        with the execution of a missed approach 
                                        and radar vectors back to the approach 
                                        course. Just as 182 was cleared for it's 
                                        visual approach, the 172 began it's 
                                        second missed approach and requested an 
                                        NDB approach to runway 27. The aircraft 
                                        was cleared to climb to the northeast 
                                        and was handed off to Approach control. 
                                        Meanwhile, approach called 182 to report 
                                        traffic at it's 12 o'clock to which 
                                        McFeron replied "we're looking." 
                                        Approach control then reported 
                                        additional traffic at 12 o'clock which 
                                        was the 172 climbing out on it's missed 
                                        approach. 
                                        First Officer Fox 
                                        replied "OK-we've got that other 12." 
                                        Approach then told the 172 to maintain a 
                                        heading of 070 degrees and at or below 
                                        3,500ft for radar vectoring. Following 
                                        this, Approach again called 182 to 
                                        advise them of the 172 climbing out of 
                                        1,700ft to which McFeron replied 
                                        "Traffic in sight." Approach then told 
                                        182 to maintain visual separation and to 
                                        contact Linbergh Field tower.  
                                        At this 
                                        point, 182 was descending to 3,200ft on 
                                        an easterly heading. The tower again 
                                        told 182 of the Cessna traffic ahead to 
                                        which McFeron replied "OK-we had it 
                                        there a minute ago...I think he's passed 
                                        off our right." 182 was then cleared to 
                                        land. Meanwhile, the 172 had 
                                        unexpectedly taken up an easterly 
                                        heading and continued to climb. As their 
                                        paths closed, conflict alerts began 
                                        going off at approach control, but 
                                        because 182 had previously reported 
                                        traffic in sight, they only called back 
                                        the 172 to remind them of traffic in the 
                                        vicinity. 
       
       
                                        
                                        There 
                                        was no reply. Flight 182 had overtaken 
                                        the climbing Cessna from almost directly 
                                        behind, clipping it's empennage with the 
                                        right inboard wing of the 727. The 172 
                                        broke up, exploded, and crashed near the 
                                        initial area of impact. The 727 was now 
                                        trailing fuel and fire erupted from the 
                                        damaged right wing. The aircraft entered 
                                        a steep bank to the right and continued 
                                        in this condition until impacting the 
                                        ground just north of Balboa Park. All 
                                        persons aboard the two aircraft were 
                                        killed as well as seven people on the 
                                        ground.
                                        ......Initial reports 
                                        of the incident were quick to place the 
                                        blame on the small aircraft, saying it 
                                        had "gotten in the way" of the PSA jet. 
                                        However, both aircraft were operating 
                                        under radar control and both were 
                                        operating visually. Initial NTSB reports 
                                        blamed the crew of flight 182 for not 
                                        maintaining visual separation after they 
                                        were instructed to do so from Approach 
                                        control. The report was not unanimously 
                                        accepted however. Also cited as a cause 
                                        of the incident was the 172's failure to 
                                        maintain it's assigned heading of 070. 
                                        It was also believed that San Diego 
                                        Approach control should have offered 
                                        more comprehensive radar separation 
                                        since it's technology could support it.
                                        
                                        Controllers, however, 
                                        stated that, since 182 had reported 
                                        having the traffic in sight, they did 
                                        not feel necessary to issue altitude 
                                        restrictions to either aircraft. In 
                                        listening to the conversation between 
                                        controllers and 182, it is unclear what 
                                        First Officer Fox meant when he replied 
                                        "OK-we've got that other 12." 
                                        Nonetheless, McFeron did, at one point, 
                                        reply that the 172 was in sight. 
                                        Analysis of the CVR showed that the crew 
                                        did not maintain visual contact with the 
                                        aircraft and may not have ever had it in 
                                        sight. Just a few moments before impact, 
                                        McFeron asked the crew "Are we clear of 
                                        that Cessna?" to which Whane replied 
                                        "Supposed to be!" "I hope!" McFeron 
                                        said, followed by "Yeah-before we turned 
                                        downwind, I saw him about one 
                                        o'clock-probably behind us now.
                                        " Six seconds before 
                                        impact, Fox said "There's one 
                                        underneath...I was looking at that 
                                        inbound there." These factors caused the 
                                        NTSB to to revise it rulings, finding 
                                        both crew error and ATC failure as 
                                        probable cause.