This document contains Minimum Operational Performance Standards (MOPS) for airborne navigation equipment (2D and 3D) using the Global Positioning System (GPS) augmented by the Satellite-Based Augmentation System (SBAS). The original document is DO-229D issued December 13, 2006 with Change 1 (described above) issued February 1, 2013 included as Appendix V. The Change is also incorporated throughout the document and includes the errata issued July 31, 2008. This Change has been produced to reflect errata, corrections, and clarifications to requirements and test procedures for SBAS airborne equipment as a result of comments received from industry during their implementation of products conforming to the referenced standard since the standard's publication in December 2006. These changes do not alter any requirements within the original DO-229D document published in December 2006 that were not previously altered by Federal Aviation Administration (FAA) Technical Standard Orders (TSOs) C145c and C146c.