ARINC768A 768A Second Generation Integrated Surveillance System (2G ISS)

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)