NTSB · Safety Recommendation
Safety Recommendation A-18-025
Recommendation
TO THE FEDERAL AVIATION ADMINISTRATION: Establish a requirement for airplanes landing at primary airports within Class B and Class C airspace to be equipped with a system that alerts pilots when an airplane is not aligned with a runway surface.
Safety Issue and Context
This report discusses the July 7, 2017, incident involving Air Canada flight 759, an Airbus A320-211, Canadian registration C-FKCK, which was cleared to land on runway 28R at San Francisco International Airport, San Francisco, California, but instead lined up with parallel taxiway C. Four air carrier airplanes were on taxiway C awaiting clearance to take off from runway 28R. The incident airplane descended to an altitude of 100 ft above ground level and overflew the first airplane on the taxiway. The incident flight crew initiated a go-around, and the airplane reached a minimum altitude of about 60 ft and overflew the second airplane on the taxiway before starting to climb.
None of the 5 flight crewmembers and 135 passengers aboard the incident airplane were injured, and the incident airplane was not damaged.
Safety issues identified in this report include the need for consistent flight management system autotuning capability within an air carrier’s fleet, the need for more effective presentation of flight operations information to optimize pilot review and retention of relevant information, the need for airplanes landing at primary airports within Class B and Class C airspace to be equipped with a system that alerts pilots when an airplane is not aligned with a runway surface, the need for modifications to airport surface detection equipment systems to detect potential taxiway landings and provide alerts to air traffic controllers, the need for a method to more effectively signal a runway closure to pilots when at least one parallel runway remains in use, and the need for revisions to Canadian regulations to address the potential for fatigue for pilots on reserve duty who are called to operate evening flights that would extend into the pilots’ window of circadian low.
As a result of this investigation, the National Transportation Safety Board makes safety recommendations to the Federal Aviation Administration and Transport Canada.
Response History
July 28, 2026 · Recipient Response · FAA
-From Bryan Bedford, Administrator: The Federal Aviation Administration (FAA) has completed an alternative action to address the intent of this recommendation in place of conducting rulemaking to update aircraft equipage requirements.
As we continue our efforts to advance mitigations to potential runway events, the FAA’s Runway Safety team has successfully installed Airport Surface Detection Equipment, Model X (ASDE-X) and Automatic Dependent Surveillance-Broadcast (ADS-B) Airport Surface Surveillance Capability (ASSC) Taxiway Arrival Prediction (ATAP) at all our 43 surface surveillance facilities. ATAP is an enhancement to the ASDE-X and ASSC alerting capabilities that warn air traffic controllers that an aircraft is aligned with a taxiway rather than the assigned runway.
While recommendation A-18-25 aimed at alerting pilots, ATAP will assist in mitigating wrong surface alignments to taxiways by alerting air traffic controllers.
The FAA provided information on the ASDE-X and ASSC airports in the United States with ATAP enabled. Details on this effort were published January 18, 2024, on the Runway Safety Fact Sheet, under ASDE-X and ASSC Taxiway Arrival Prediction (ATAP), available at:
https://www.faa.gov/newsroom/runway-safety-fact-sheet
I believe the FAA has effectively addressed the intent of Safety Recommendation A-18-25 and plan no further action on this safety recommendation.
July 31, 2024 · NTSB Correspondence · FAA
You reported that the Commercial Aviation Safety Team’s (CAST’s) Approach and Landing Misalignment (ALM) Joint Safety Analysis and Implementation Team (JSAIT) has published its final report and proposed safety enhancements (SEs). We note that SE 231, “Aircraft-Based Technologies,” and SE 235, “Aircraft-Based Technologies (Research and Development),”