Safety
Control Cited in San Diego Collision
(Following is the first part of the National Transportation Safety Board report on the midair collision of a Pacific Southwest Airlines Boeing Hill 4 and a Gibbs Flite Center Cessna 172 near Lindbergh Field, San Diego, Calif, Sept. 25, 1978, killing all 137 persons aboard the two aircraft (AW&ST Oct. 2, 1978, p. 34).