ETSO-C119e

• ED Decision 2022/018/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

#### ETSO-C119e *ED Decision 2022/018/R* ##### Airborne Collision Avoidance System II (ACAS II) Version 7.1 with Hybrid Surveillance **1 Applicability** This ETSO provides the requirements that Airborne Collision Avoidance System II (ACAS II) Version 7.1 equipment that is designed and manufactured on or after the date of this ETSO must meet in order to be identified with the applicable ETSO marking. **2 Procedures** 2.1 General The applicable procedures are detailed in CS-ETSO, [Subpart A](#_DxCrossRefBm920220672). 2.2 Specific None. **3 Technical Conditions** 3.1 Basic 3.1.1 Minimum Performance Standard The applicable standards are those provided in EUROCAE Document ED‑143, ‘Minimum Operational Performance Standards for Traffic Alert and Collision Avoidance System II (TCAS II)’, dated September 2008, Section 2 as modified by Change 1 dated April 2009, Change 2 (Version 7.1) dated April 2013, and by [Appendix 1](#_DxCrossRefBm920220840) to this ETSO and EUROCAE Document ED‑221A, ‘Minimum Operational Performance Standards (MOPS) for Traffic Alert and Collision Avoidance System II (TCAS II) Hybrid Surveillance’, dated December 2015, Section 2, as modified by [Appendix 2](#_DxCrossRefBm920220839) to this ETSO. 3.1.2 Environmental Standard See CS-ETSO, Subpart A, paragraph 2.1. 3.1.3 Software See CS-ETSO, Subpart A, paragraph 2.2. 3.1.4 Airborne Electronic Hardware See CS-ETSO, Subpart A, paragraph 2.3. 3.2 Specific 3.2.1 Failure Condition Classification See CS-ETSO, Subpart A, paragraph 2.4. Failure of the function defined in paragraph 3.1.1 of this ETSO resulting in misleading information is a hazardous failure condition. Failure of the function defined in paragraph 3.1.1 of this ETSO resulting in a loss of function is a minor failure condition. **4 Marking** 4.1 General See CS-ETSO, Subpart A, paragraph 1.2. 4.2 Specific None. **5 Availability of Referenced Documents** See CS-ETSO, Subpart A, paragraph 3. [Amdt ETSO/11] [Amdt ETSO/17]