ETSO-C26d

• ED Decision 2016/029/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

#### ETSO-C26d *ED Decision 2016/029/R* ##### **Aircraft Wheels and Wheel-Brake Assemblies** **(CS-23, -27 and -29 aircraft)** **1 Applicability** This ETSO gives the requirements which aircraft wheels and wheel-brake assemblies for CS-23, CS-27 and CS-29 aircraft that are designed and manufactured on or after the date of this ETSO must meet in order to be identified with applicable ETSO marking. The requirements which transport aeroplane wheels and wheel-brake assemblies (CS-25 aircraft) must meet are contained in [ETSO-C135](#_DxCrossRefBm920220714). **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 the [appendix 1](#_DxCrossRefBm920220713) to this ETSO. The MPS is based, in part, on the Society of Automotive Engineers (SAE), Aerospace Recommended Practice (ARP) 5381, Minimum Performance Recommendations for Part 23, 27 and 29 Aircraft Wheels, Brakes, and Wheel-Brake Assemblies, dated October 2000. Where applicable, instead of the referenced FAA documents/paragraph the corresponding Part, CS or ETSO document/paragraph shall be used, when available. 3.2 Specific None. **4 Marking** 4.1 General Marking is detailed in CS-ETSO Subpart A paragraph 1.2. In addition and in lieu of the marking specified in 21.A.807(a), the following information shall be legibly and permanently marked on the major equipment components: (1) Name of the manufacturer responsible for compliance; (2) Serial number; (3) Part number; (4) Applicable ETSO number; (5) Rim size (this marking applies to wheels only); (6) Hydraulic fluid specification (this marking applies to hydraulic brakes only). 4.2 Specific None. **5 Availability of Referenced Document** Copies of SAE ARP5381 may be purchased from the Society of Automotive Engineers Inc., Department 331, 400 Commonwealth Drive, Warrendale, PA 15096-0001. Copies also can be obtained through the SAE Internet website at: [www.sae.org](http://www.sae.org/). [Amdt ETSO/12]