ETSO-C59b

• ED Decision 2018/002/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

#### ETSO-C59b *ED Decision 2018/002/R* ##### Airborne Selective Calling Equipment **1 Applicability** This ETSO provides the requirements which airborne selective calling equipment that are 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 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 Standards set forth in RTCA document RTCA/DO-93A, Minimum Operational Performance Standards (MOPS) for Airborne Selective Calling (SELCAL) Equipment, dated March 17, 2016. Demonstrate the required functional performance under the test conditions specified in RTCA/DO-93A, Minimum Operational Performance Standards for Airborne Selective Calling (SELCAL) Equipment, Section 2.4, dated March 17, 2016. Demonstrate the required performance under the test conditions specified in RTCA/DO-93A, Section 2.3, using environmental conditions identified in paragraph 3.1.2 of this ETSO and test procedures appropriate for airborne equipment. 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 is a minor failure condition. Loss of the function defined in paragraph 3.1.1 of this ETSO is a minor failure condition. **4 Marking** 4.1 General Marking is detailed in CS-ETSO Subpart A paragraph 1.2. 4.2 Specific None. **5 Availability of Referenced Document** See CS-ETSO Subpart A paragraph 3. [Amdt ETSO/13]