In July 2017 , Air Canada Flight 759 nearly crashed into four other airliners as it attempted to land on a San Francisco taxiway misidentified as a runway : the next runway was closed but the information was buried in the NOTAM . In September 2018 , the NTSB stated NOTAMs were unintelligible and ignored , and recommended a more effective information presentation for better relevance
Air Canada Flight 759
Air Canada Flight 759
NOTAM