Purpose of this Document

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

• Airborne Collision Avoidance System (ACAS) (also known as TCAS II)

• Air Traffic Control Transponder (ATCRBS/Mode S)

• Weather Radar (WXR) / Predictive Windshear (PWS)

• Terrain Awareness and Warning System (TAWS) / Reactive Windshear (RWS)

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

This document uses a building block approach to define four ISS configurations with a combination of surveillance functions. This document establishes interoperability standards for these configurations. The 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 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, Weather Radar, TAWS, and ADS-B OUT/IN. Section 1.8 includes a list of reference documents.

The primary goal of the 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.