Appendix 2 to ETSO-C20a - Instructions for Continued Airworthiness of the Aircraft Combustion Heater and Accessories

• ED Decision 2020/011/R found in: CS-ETSO Amdt 17 - European Technical Standard Orders (Oct 2026)

###### Appendix 2 to ETSO-C20a – Instructions for Continued Airworthiness of the Aircraft Combustion Heater and Accessories *ED Decision 2020/011/R* 1.0 The following information contained in this Appendix must be included in the manual to ensure that the combustion heater and its accessories continue to comply with the ETSO once it is installed in a product: 1.1 Scheduling information for each part of the combustion heater, stating the inspection criteria and service limits. Necessary cross-references to the Airworthiness Limitations section must also be included. 1.2 Troubleshooting information that describes the probable malfunctions, and how to recognise and resolve those malfunctions. 1.3 Information that describes the order and method for removing and replacing parts, the order and method for disassembly and assembly, with any necessary precautions to be taken. 1.4 Cleaning and inspection instructions that cover the material and apparatus to be used and the methods and precautions to be taken. Methods of inspection must also be included. 1.5 Details of repair methods for worn or otherwise substandard parts and components, along with the information necessary to determine when a replacement is necessary. 1.6 Instructions for testing, including the use of the test equipment and instrumentation. 1.7 A list of the tools and equipment that are necessary for maintenance, and guidance for their use. 1.8 Instructions on how to ensure that the combustion heater assembly is fit to return to service after maintenance and prior to installation (for example, procedures for a pressure decay test). [Amdt ETSO/16]