- Airworthiness Approval of Traffic Alert and Collision Avoidance Systems
(TCAS II), Versions 7.0 & 7.1 and Associated Mode S Transponders
- Date issued
- Office of Primary Responsibility
- We wrote this advisory circular (AC) to guide applicants seeking airworthiness approval for TCAS II version 7.1 (V7.1) certified to technical standard order (TSO) C119c, TSO-C119d or TSO-C119e, Traffic Alert and Collision Avoidance System (TCAS) Airborne Equipment, TCAS II with Hybrid Surveillance. This AC also provides guidance for applicants seeking airworthiness approval for stand-alone Mode S transponders certified to TSO-C112e, Air Traffic Control Radar Beacon System/Mode Select (ATCRBS/Mode S) Airborne Equipment. You can also use the guidance in this AC for seeking airworthiness approval for TCAS II version 7.0 (V7.0) certified to TSO-C119b, Traffic Alert and Collision Avoidance System (TCAS) Airborne Equipment, TCAS II and associated Mode S transponders.
- AC 20-151C (PDF)