The Phoenix City Council is demanding that the FAA reverse the September 2014 NextGen-based airspace system changes the agency made after numerous residents complained the new routings were disrupting their lives. The FAA altered airspace in Phoenix airspace, as well as other major metropolitan areas this year in an attempt to enhance air traffic safety and efficiency. At a December 17 public meeting, Phoenix city officials claimed the FAA never told them that suggested airspace alterations would actually take effect last fall. The Phoenix City Council said the FAA had also not reacted quickly enough to Phoenix residents' complaints over increases in aircraft noise that began shortly after the airspace updates took place last September. Three councilmembers suggested filing a lawsuit against the FAA to speed up the process of returning to pre-NextGen airspace status, although that option was not considered likely. The council demanded the FAA be required to bring any future airspace changes to the council for feedback before implementation. Some local critics of the new NextGen airspace changes claimed the FAA had other options that it never seriously considered before the September airspace changes took effect.