ETSO-C45b A1

• ED Decision 2008/012/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

#### ETSO-C45b A1 *ED Decision 2008/012/R* ##### **Manifold Pressure Instruments** **1 Applicability** This ETSO gives the requirements which manifold pressure instruments that are 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 Standard set forth in the SAE Aerospace Standard (AS) document: SAE AS 8042 from December 1, 1985, unless otherwise specified by [Appendix 1](#_DxCrossRefBm920220729) to this ETSO. 3.1.2 Environmental standard The Manifold Pressure Instruments must be tested according to Section 7 of SAE AS 8042 and the environmental test procedures as defined in CS-ETSO, Subpart A, paragraph 2.1. 3.1.3 Software If the Manifold Pressure Instruments includes a digital computer, see CS-ETSO, Subpart A, paragraph 2.2, for software development. 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 has been determined to be a major failure condition. The applicant must develop the system to at least the design assurance level commensurate with this 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/3] [Amdt ETSO/8]