ETSO-C5f

• ED Decision 2016/013/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

#### ETSO-C5f *ED Decision 2016/013/R* ##### Direction Instrument, Non-Magnetic (Gyroscopically Stabilized) **1 Applicability** This ETSO provides the requirements which Direction Instruments, Non-Magnetic (Gyroscopically Stabilized) 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 [Subpart A](#_DxCrossRefBm920220672). 2.2 Specific None. **3 Technical Conditions** 3.1 Basic 3.1.1 Minimum Performance Standard Standards set forth in the SAE Aerospace Standard AS8021, ‘Direction Instrument, Non-Magnetic (Gyroscopically Stabilized)’, dated March 16, 1981. 3.1.2 Environmental Standard See CS-ETSO, Subpart A, paragraph 2.1. 3.1.3 Computer Software See CS-ETSO, Subpart A, paragraph 2.2. 3.1.4 Electronic Hardware Qualification 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. Failure of the function defined in paragraph 3.1.1 of this ETSO resulting in misleading information is a major failure condition. Failure of the function defined in paragraph 3.1.1 of this ETSO resulting in loss of information is a minor failure condition. **4 Marking** 4.1 General Marking as 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/11]