GNS 430W comes with built-in WAAS navigation capabilities. It is approved to fly LPV “glideslope” approaches without reference to ground-based navaids of any kind. Featuring an advanced 15-channel receiver capable of 5 position updates per second, GNS 430W meets stringent TSO C146a FAA standards for WAAS sole means navigation — providing vertical and lateral approach guidance into thousands of airports previously inaccessible in IFR conditions.