
FILE - This composite of file images released by the National Transportation Safety Board (NTSB) shows Air Canada flight 759 (ACA 759) attempting to land at the San Francisco International Airport in San Francisco on July 7, 2017. At top is a map of the runway created from Harris Symphony OpsVue radar track data analysis. At center is from a transmission to air traffic control from a United Airlines airplane on the taxiway. The bottom image, taken from San Francisco International Airport video and annotated by source, shows the Air Canada plane flying just above a United Airlines flight waiting on the taxiway. Federal officials are imposing new rules on nighttime landings at San Francisco airport after a close call. The FAA will also require 2 controllers in the tower. (NTSB via AP, File)
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