Esterline's CMA-5024 GPS/SBAS landing system sensor unit. Photo courtesy of Esterline

Esterline Avionics Systems has completed ground and flight tests of its satellite-based augmentation systems (SBAS)-capable CMA-5024 GPS/SBAS landing system sensor unit (GLSSU) on Boeing 737 next-generation aircraft with the goal of obtaining an STC  for ADS-B out and SBAS/GPS navigation.

All testing was completed on a 737-700, and Esterline expects an STC for all 737NG aircraft by the end of 2018. An option for localizer performance with vertical guidance (LPV) approach capability will be available as well.

The CMA-5024 is an approved DO-260B ADS-B positioning source that can be paired with any DO-260B transponder which achieves compliance with the ADS-B mandate

The CMA-5024 meets the requirements for an instrument flight rules, civil-certified global navigation satellite system (GNSS). The European Geostationary Navigation Overlay Service (EGNOS), a component of SBAS, augments GPS to provide an extremely accurate navigation solution that will support all flight operations from en route through LPV guidance CAT-l equivalent approach. It is also compliant with and supports EGNOS/SBAS, from departure, en-route navigation, and all EGNOS/SBAS LPV precision approaches and complies with published CNS/ATM navigational mandates.

Esterline will be exhibiting at the Farnborough Airshow in Hall 1, booth 1180.

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