Rockwell Collins last month wrapped up flight testing of a WAAS/LPV (wide-area augmentation system/localizer performance with vertical guidance) upgrade for the Pro Line 21 avionics system in the Hawker 800XP. The STC issued last month will allow Hawker 800XP operators equipped with Pro Line 21 to take advantage of the more than 1,500 WAAS/LPV approaches created so far. Rockwell Collins has also issued an approved model list STC for upgrades to WAAS GPS capability in all Pro Line 4 and Pro Line 21 equipped airplanes. This STC covers the installation of a Collins GPS-4000S WAAS receiver, permitting use of GPS for primary navigation and eliminating the requirement to perform RAIM (receiver autonomous integrity monitoring) checks before each flight. Rockwell Collins plans to complete WAAS/LPV flight testing in more than a dozen additional business aircraft in the next year.