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Universal Avionics, an Elbit Systems company

Press Release

Issued by Universal Avionics, an Elbit Systems company.

April 1, 2009

WAAS LPV on the Lear 45 STC’d

Universal Avionics adds another approval for its WAAS/SBAS-capable Flight Management Systems (FMS) to its growing list of certified platforms. In late March, an FAA Supplemental Type Certificate (STC) was awarded to Duncan Aviation, Inc., for a dual UNS-1Ew installation in the Lear 45 aircraft. The STC, which included Localizer Performance with Vertical Guidance (LPV) capability, covers Lear 40 and 45 models. With the WAAS/SBAS-FMS, Universal was the first to provide this approach capability to Part 25 Transport Category Aircraft like the Lear 40/45.

The STC includes approval for 3D coupled WAAS GPS (RNAV) Localizer Performance with Vertical Guidance (LPV) procedures. These approach types, referred to as RNAV (GPS) LPV approaches on the approach chart, are the fastest growing GPS approach type in the U.S. As part of the NextGen National Airspace System improvement plan, the FAA is focused on reducing the industry's dependence on older ground based navaids such as ILS, and increasing the use of GPS navigation via the Wide Area Augmentation System (WAAS) Satellite-Based Augmentation System (SBAS). Because of its ability to alleviate airspace congestion, save fuel and improve safety, SBAS technology is being applied worldwide, with systems in Europe and Japan to be operational for aircraft soon.

Also included in this particular STC is compliance with FAA AC 90-105, which allows the pilot to fly barometric VNAV approach guidance to the published Decision Altitude.

With the WAAS/SBAS-FMS, pilots can fly with RNP-like accuracy of 0.3 NM and minima as low as 200 ft with ½ mile visibility for "ILS-like" capability at airports without ILS navaids. Greater airport accessibility and improved safety in poor weather conditions are just some of the other advantages of utilizing SBAS guidance.