Archived Updates

Update 10/02/2018

SFO New Landing System Workshop


As part of Palo Alto’s commitment to issues that may impact airplane noise, the City hosted a public workshop where San Francisco International Airport (SFO) staff presented their new landing system, Ground-Based Augmentation System (GBAS), that will soon become operational at SFO. The workshop took place in Palo Alto City Council Chambers on Tuesday, October 2, 2018 from 6-8 p.m.


The Federal Aviation Administration (FAA) describes GBAS as “a system that provides differential corrections and integrity monitoring of Global Navigation Satellite Systems (GNSS). GBAS provides navigation and precision approach service in the vicinity of the host airport (approximately a 23 nautical mile radius), broadcasting its differential correction message via a very high frequency (VHF) radio data link from a ground-based transmitter. GBAS yields extremely high accuracy, availability, and the integrity necessary for Category I, and eventually Category II, and III precision approaches. GBAS demonstrated accuracy is less than one meter in both the horizontal and vertical axis.” To find out more about GBAS you can visit the FAA webpage at: