ARINC 768A PDF

Purpose of this Document

This document provides standards for a second-generation Integrated Surveillance System (2G ISS) that may be configured to suit a wide variety of aircraft installations. The 2G ISS may include components and modules to perform multiple surveillance functions:

• Airborne Collision Avoidance System (ACAS), specifically ACAS-Xa

• Air Traffic Control Transponder (ATCRBS/Mode S)

• Terrain Awareness and Warning System (TAWS)

• Automatic Dependent Surveillance – Broadcast (ADS-B) OUT/IN

• Distance Measuring Equipment (DME)

This document uses a building block approach to define a second-generation ISS with a combination of surveillance functions. This document establishes interoperability standards for the second-generation ISS (2G ISS). The 2G ISS is intended for installation on commercial air transport aircraft with digital interfaces (ARINC 429 or ARINC 664) with primary applicability to future aircraft and derivatives of the current generation production aircraft. This document provides standards for equipment form factor, signal interfaces, aircraft interwiring and connector pin allocation.

The minimum operational and performance capabilities of the 2G ISS are further described in the related RTCA and EUROCAE Minimum Operational Performance Standards (MOPS) and Minimum Aviation System Performance Standards (MASPS) documents for ACAS, Mode S transponder, TAWS, ADS-B OUT/IN, and DME where ACAS in this document is meant to include ACAS-Xa and ACAS-Xo. Section 1.8 provides a list of reference documents.

The primary goal of the 2G ISS is to simplify aircraft installations and reduce life cycle costs through integration, as well as providing meaningful operational benefits. Another goal is to establish an enabling platform for future surveillance capabilities.