ETSO-2C66b

• ED Decision 2003/10/RM found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

#### ETSO-2C66b *ED Decision 2003/10/RM* ##### **Distance Measuring Equipment (DME) Operating Within the Radio Frequency Range of 960-1215 Megahertz** **1 Applicability** This ETSO gives the requirements which distance measuring equipment that is 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 EUROCAE document ED-54 (1987). In addition to Chapter 5 of EUROCAE document ED-54, all materials used except small parts (such as knobs, fasteners, seals, grommets and small electrical parts) that would not contribute significantly to the propagation of a fire, must be self-extinguishing when tested in accordance with applicable requirements of CS 25 Appendix F. 3.1.2 Environmental Standard See CS-ETSO Subpart A paragraph 2.1 Addition: equipment manufactured in accordance with this ETSO shall be compatible with 50 kHz VOR equipment. 3.1.3 Computer Software See CS-ETSO Subpart A paragraph 2.2 3.2 Specific None **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.