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United States Department of Transportation United States Department of Transportation

AC 20-172A - Airworthiness Approval for ADS-B in Systems and Applications (Cancelled)

Document Information

Number
20-172A
Title
Airworthiness Approval for ADS-B in Systems and Applications
Date cancelled
2015-05-20
Cancellation notes
AC 20-172B
Date issued
2012-03-23
Office of Primary Responsibility
AIR-600, Policy and Innovation Division
Description

This advisory circular (AC) provides guidance for the initial and follow-on installations of Automatic Dependent Surveillance – Broadcast (ADS-B) In systems supporting ground and airborne traffic applications. These applications are defined in TSO-C195a, Avionics Supporting Automatic Dependent Surveillance – Broadcast (ADS-B) Aircraft Surveillance Applications (ASA). The applications discussed in this AC are designed to support basic situational awareness as well as the In-Trail Procedure. As more advanced applications mature, this AC will be updated to reflect those added to TSO-C195a.

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