Gulfstream has received FAA approval to add Waas functionality in the G150 as part of a final-phase manufacturing installation that adds an optional Waas-capable GPS receiver to the airplane. The Waas upgrade is also available for retrofit in G150s already in service. Waas in the G150 provides localizer performance with vertical guidance (LPV) approach capability, allowing pilots to fly into approved airports using a pseudo-glide-slope with similar minimums as ILS approaches. Waas functionality is also provided in Gulfstream’s large-cabin jets as part of the optional enhanced navigation package, an upgrade to the PlaneView flight deck. –Stephen Pope