This document contains minimum operational performance standards (MOPS) for GNSS integrated with inertial reference systems (IRS) or attitude heading reference systems (AHRS). It is not meant to be a replacement or substitute for RTCA DO-334 (MOPS for Strapdown Attitude and Heading Reference Systems). A key assumption is that any AHRS used for compliance with the performance requirements in this MOPS first meets the performance standard described in RTCA DO-334. That is, RTCA DO-334 is the starting point for any AHRS used to comply with requirements in this MOPS.