ETSO-C39c

• ED Decision 2010/010/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

#### ETSO-C39c *ED Decision 2010/010/R* ##### **Aircraft Seats and Berths Certified by Static Testing only** **1 Applicability** This ETSO gives the requirements which aircraft seats and berths that are manufactured on or after the date of this ETSO must meet in order to be identified with the applicable ETSO marking for the following types: Type A – Large Aeroplane (9g forward load seats only) Type I – Large Aeroplane (berths only) Type II – Normal, Utility and Commuter Type III – Aerobatic Type IV – Rotorcraft **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 3.1.1.2 Type A Standards set forth in sections 3.1.4, 3.1.8, 3.1.11, 3.1.14, 3.1.15, 3.1.17, 3.1.18, 3.1.19, 3.1.20, 3.2, 3.3, 3.4 (except 3.4.2), 3.5, 4 (except 4.2), 5 (except 5.3 and 5.4) of SAE Aerospace Standard (AS) document AS 8049 Rev. A, “Performance Standard for Seats in Civil Rotorcraft, Transport Aircraft, and General Aviation Aircraft” dated September 1997, as modified by [Appendix 1](#_DxCrossRefBm920220720) of this ETSO. Seat cushions, when included, for large aeroplane passenger, flight attendant, and observer seats shall meet the fire protection provisions of Appendix F, Part II of EASA CS 25, as required by CS 25.853(c). 3.1.1.3 Type I, II, III and IV Standards set forth in the National Aerospace Standard (NAS) Specification 809, dated January 1, 1956 with the following exception: (i) The sideward loads as specified in 4.1.2. Table I of NAS 809 need not exceed the requirements of the applicable Certification Specification (CS). (ii) Materials in Type I berths must comply with the fire protection provisions of CS 25.853(a). 3.1.2 Environmental Standard None 3.1.3 Computer Software None 3.1.4 Electronic Hardware Qualification None 3.2 Specific None. **4 Marking** 4.1 General Marking is detailed in CS-ETSO Subpart A paragraph 1.2. 4.2 Specific 4.2.1 The marking must also include the applicable seat type: “Type A-”, “Type I-”, “Type II-”, “Type III-”, or “Type IV-” followed by the appropriate seat facing direction designation: “FF” – forward; “RF”- rearward; or “SF” – sideward 4.2.2 Each passenger, flight attendant and observer seat cushion required for qualification of the seating system must be marked with “Complies with CS 25.853(c)” when tested in accordance with the requirements of CS 25.853(c) **5 Availability of Referenced Document** See CS-ETSO Subpart A paragraph 3 [Amdt ETSO/6]