GM1 21L.A.9(a) Instructions for continued airworthiness

• ED Decision 2023/013/R found in: Initial Airworthiness and Environmental Protection (748/2012) Part-21 Part-21L (Jul 2024)

GM1 21L.A.9(a) Instructions for continued airworthiness ED Decision 2023/013/R SCOPE OF THE INSTRUCTIONS FOR CONTINUED AIRWORTHINESS (ICAs), THEIR PUBLICATION FORMAT AND TYPICAL ICA DATA (a)     The ICAs may be published in documents or in a manner other than the traditional understanding of a document — for example, as a series of web pages, or Information Technology (IT) tools, or in a publishing format linked to tasks or data modules rather than pages. (b)     The design approval holder (DAH) or declarant may decide, within the framework provided by point [21L.A.9](#_DxCrossRefBm1649097761) and its acceptable means of compliance and guidance material, to publish the ICAs in the most suitable location as part of all the information published to support the airworthiness of a given aircraft. (c)      The requirement for ICAs is not intended to ensure that all products or articles may be restored to an airworthy condition. A certain level of deterioration may require a product or an article to be permanently withdrawn from service, and restoration may not be reasonably achievable. Certain deteriorations or levels of deterioration may require specific instructions (e.g. inspection or restoration) that will only be developed and provided on a case-by-case basis, as needed, for a given product or article, and as such, will not be included in the ICAs. In some exceptional cases, ICAs for products may ultimately instruct the user to contact the DAH or declarant in order to define the specific instructions on a case-by-case basis. This typically happens when the definition of generic instructions covering all possible cases is not possible. For example, following an aircraft hard landing, a detailed analysis may have to be carried out by the DAH or declarant to determine the specific instructions to be followed, which depend on the touchdown loads. ##### GM1 21L.A.9(a) Instructions for continued airworthiness *ED Decision 2023/013/R* **SCOPE OF THE INSTRUCTIONS FOR CONTINUED AIRWORTHINESS (ICAs), THEIR PUBLICATION FORMAT AND TYPICAL ICA DATA** (a) The ICAs may be published in documents or in a manner other than the traditional understanding of a document — for example, as a series of web pages, or Information Technology (IT) tools, or in a publishing format linked to tasks or data modules rather than pages. (b) The design approval holder (DAH) or declarant may decide, within the framework provided by point [21L.A.9](#_DxCrossRefBm485231257) and its acceptable means of compliance and guidance material, to publish the ICAs in the most suitable location as part of all the information published to support the airworthiness of a given aircraft. (c) The requirement for ICAs is not intended to ensure that all products or articles may be restored to an airworthy condition. A certain level of deterioration may require a product or an article to be permanently withdrawn from service, and restoration may not be reasonably achievable. Certain deteriorations or levels of deterioration may require specific instructions (e.g. inspection or restoration) that will only be developed and provided on a case-by-case basis, as needed, for a given product or article, and as such, will not be included in the ICAs. In some exceptional cases, ICAs for products may ultimately instruct the user to contact the DAH or declarant in order to define the specific instructions on a case-by-case basis. This typically happens when the definition of generic instructions covering all possible cases is not possible. For example, following an aircraft hard landing, a detailed analysis may have to be carried out by the DAH or declarant to determine the specific instructions to be followed, which depend on the touchdown loads.