No, that was a different description. You have to go to the link that I had, and then click on 1950's. Here it is, cut and pasted:
Date / Time: Thursday, January 31, 1957 / 11:18 a.m.
Operator / Flight No.: Douglas Aircraft Company / Non-Commercial
Location: Near Sunland, Calif.
Details and Probable Cause: Midair collision. On the first functional test flight of the brand-new airliner before it was to be delivered to Continental Airlines, a crew of four was aboard the four-engine Douglas DC-7B aircraft (N8210H) as it departed Santa Monica Municipal Airport at 10:15 a.m. Co-pilot for the Douglas Aircraft Co. test flight was veteran flier Archie R. Twitchell, 50, who enjoyed a secondary career as an actor between flying stints and appeared in over 70 films, including “I Wanted Wings,” “Among the Living,” “Out of the Past,” “I Shot Billy The Kid” and “Sunset Boulevard,” among many others. That same morning, in Palmdale, a U.S. Air Force Northrop F-89J Scorpion jet fighter (52-1870A) took off at 10:50 a.m. on a similar test flight, one that involved a check of its on-board radar equipment. Both aircraft were performing their individual tests at an altitude of 25,000 feet in clear skies over the San Fernando Valley when, at about 11:18 a.m., a high-speed, near-head-on midair collision occurred. Investigators later determined that the two aircraft converged at a point in the sky approximately one to two miles northeast of the Hansen Dam spillway. Following the collision, the radarman aboard the eastbound twin-engine F-89J Scorpion, Curtiss Adams, was able to safely bail out of the stricken fighter jet and, suffering from serious burns, parachuted to a landing in Burbank. The fighter jet’s pilot, Roland E. Owen, died when the aircraft plummeted in flames into La Tuna Canyon in the Verdugo Mountains. The last reported message from the fatally crippled westbound DC-7B airliner was from co-pilot Archie Twitchell, who radioed, “Mid-air collision! Mid-air collision! Ten-How (the plane’s radio designation) . . . We’re going in . . . uncontrollable . . . uncontrollable . . . Say good-by to everybody.” With a portion of its left wing sheared off and while raining debris onto the neighborhoods below, the DC-7B continued westbound, then rolled to the left and began a steepening, high-velocity dive earthward. The aircraft broke up at about 500 to 1,000 feet above the ground and seconds later the wreckage slammed into a Pacoima churchyard near the corner of Laurel Canyon Boulevard and Terra Bella Street, killing all four crew members on board. Upon impact, portions of the DC-7B exploded into hundreds of flaming pieces that slashed across the adjacent playground of Pacoima Junior High School, where some 220 boys were just ending their outdoor athletics activities. Ronnie Brann, 13, and Robert Zallan, 12, were struck and killed by the flying blast of wreckage and debris from the crashing airliner. A third gravely injured student, Evan Elsner, 12, died two days later. An estimated 74 additional students on the playground suffered injuries ranging from minor to critical. A second F-89 Scorpion jet, being used as a radar “target” by the first one during the equipment tests, was not involved in the collision and its two-man crew did not witness the accident. The collision was blamed on pilot error: Failure of both aircraft crews to exercise proper “see and avoid” procedures regarding other aircraft while operating under visual flight rules (VFR). The catastrophe prompted the Civil Aeronautics Board (CAB) to set restrictions on all aircraft test flights, both military and civilian, requiring that they be made over open water or specifically approved sparsely populated areas.
Fatalities: 8 -- 1 of 2 occupants of the F-89J Scorpion jet; all 4 crew members aboard the DC-7B airliner; and 3 junior high school students on the ground.
ONT - Southern California's Ontario!