With this approval, the system at SFO is available to replicate existing landing procedures, which paves the way for SFO to submit innovative new procedures, specific to GBAS, which it hopes will eventually help reduce noise in nearby communities in the future. The
'This is a major milestone in a journey that began over five years ago,' said Airport Director
How it works
GBAS utilizes receivers and broadcast antennae to correct inherent errors in satellite-based GPS resulting from atmospheric conditions, minor clock errors and the position of the satellites. Using its highly accurate fixed position, it compares locational information from nearby satellites and produces a corrected GPS message which is broadcast to aircraft landing at SFO. Uncorrected, GPS is accurate to about 40 meters. With GBAS, the accuracy improves to within 2-3 centimeters.
Potential benefits
This precision offers multiple benefits, including improved safety and performance during bad weather, but also the potential for new landing procedures, which could potentially reduce community noise by approaching at higher altitudes or further offshore. SFO has initiated these innovative procedures for community review and comment, with the hopes of submitting a series of procedures to the
Development, flight testing, and certification
SFO has been pursuing GBAS for over five years, working with airline flight crews and
For more information on GBAS, please visit noise.flysfo.com.
About
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CONTACT:
Public Information Officer
650.821.4000
Doug.Yakel@flysfo.com
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