This document contains the Minimum Aviation System Performance Standards for the Local Area Augmentation System (LAAS), a system developed to support precision approach and landing operations and other navigation and surveillance applications, within a local area including and surrounding an airport.

This revision harmonizes the LAAS requirements for supporting Category I operations and the LAAS differential positioning service with the LAAS MOPS [DO 253A] and the ICAO Annex 10 GBAS SARPs through Amendment 79. The requirements to support LAAS Category II and III precision approach operations are added/updated as well as requirements for the LAAS when supporting complex terminal procedures through the broadcast of Terminal Area Path (TAP) data using the LAAS VHF Data Broadcast (VDB).