 One GBAS supports up to 48 approaches and covers many runway ends with more installation flexibility than an ILS with localizer and glideslope antennas at each end.A GBAS can provide multiple approaches to reduce wake turbulence and improve resilience, maintaining availability and operations continuity.In December 2008, the New York Port Authority invested $2.5 million to install a GBAS at New York EWR with Continental (now United) equipping 15 aircraft for $1.1 million while the FAA committed $2.5 million to assess the technology.