ETSO-C126c

• ED Decision 2020/011/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

#### ETSO-C126c *ED Decision 2020/011/R* ##### Locator Transmitter **1 Applicability** This ETSO provides the requirements which Emergency Locator Transmitters that are designed and manufactured on or after the applicability 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 ED-62B, MOPS for Aircraft Emergency Locator Transmitters 406 MHz, dated December 2018 as amended by EUROCAE ED-62B Change 1, dated 16 June 2020. 3.1.2 Environmental Standard Refer to EUROCAE ED-62B as amended by EUROCAE ED-62B Change 1 and, for categories not addressed in EUROCAE ED-62B, 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 None 3.2.1 Failure Condition Classification See CS-ETSO, Subpart A, paragraph 2.4. A failure of the function defined in paragraph 3.1 that results in signal outputs that do not meet the requirements of paragraph 3 is a minor failure condition. A loss of the function defined in paragraph 3.1 is a minor failure condition. A transmission of an erroneous encoded location for an ELT(DT) is a minor failure condition. An unintended deployment of an ELT(AD) is a major failure condition. 3.2.2 Documentation The declaration of design and performance (DDP) shall list the type, class, categories and capabilities of the ELT, as well as the applicable version of the COSPAS-SARSAT beacon standards. A copy of the COSPAS-SARSAT approval shall be provided to EASA. **4 Marking** 4.1 General See CS-ETSO, Subpart A, paragraph 1.2. 4.2 Specific As per EUROCAE ED-62B Sections 3.10, 3.3.3, 2.9.3.2 and 3.8.2. **5 Availability of Referenced Documents** See CS-ETSO, Subpart A, paragraph 3. [Amdt ETSO/11] [Amdt ETSO/16]