Appendix 1 to ETSO-C195b - Amendment to ED-194A/DO-371B

• ED Decision 2016/029/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

###### Appendix 1 to ETSO-C195b – Amendment to ED-194A/DO-371B *ED Decision 2016/029/R* A2.1 Introduction This Appendix amends ED-194A/DO-317B to address specific issues raised since publication of the document. A2.2 TCAS II Integration with TSAA TCAS integration is addressed in ED-194A/DO-317B section 2.2.4.5.3.3, titled ‘TSAA Traffic Caution alerts on Correlated TCAS Tracks’. Replace the current section 2.2.4.5.3.3 with the following text: *The TSAA application may be integrated with TCAS I, TCAS II, or TAS systems.* *If an ADS-B/ADS-R/TIS-B track is correlated with a TCAS track, then the alerts shall (2223) only be presented from either the TSAA application or the TCAS system (i.e., not both).* *If TSAA and TCAS II are installed on the same aircraft, TCAS II resolution advisories (RAs) shall (####) have priority over all other alerts.* *If TSAA and TCAS II are installed on the same aircraft, TCAS II traffic advisories (TAs) shall (####) be generated for the TCAS tracks by the TCAS II TA function. TSAA may generate traffic alerts for ADS-B only traffic not correlated with a TCAS track.* *TSAA alerts should take precedence over TCAS I or TAS traffic alerts (TAs) when the TCAS track is correlated with an ADS-B or ADS-R track; but, TCAS traffic alerts should take precedence over TSAA alerts when the TCAS track is correlated with a TIS-B track.* A2.3 TCAS Validation of ITP Traffic TCAS validation of ITP traffic is addressed in ED-194A/DO-317B section 2.2.4.4.2.1, titled ‘Validation of Traffic Position with TCAS Data’. Add the following text to the end of the second paragraph. ASSAP is not required to support ADS-R or TIS-B traffic for use with the ITP application. A.2.4 TCAS Validation of CAVS Traffic TCAS validation of CAVS traffic is addressed in ED-194A/DO-317B section 2.2.4.6.2.1, titled ‘Validation of Traffic Position with TCAS Data’. Remove all instances of the text ‘/ADS-R’ from this section and add the following text to the end of the second paragraph. ASSAP is not required to support ADS-R or TIS-B traffic for use with the CAVS application. [Amdt ETSO/12]