GM4 21L.A.9(b) Instructions for continued airworthiness

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

GM4 21L.A.9(b) Instructions for continued airworthiness ED Decision 2023/013/R INTEGRATION OF THE INSTRUCTIONS FOR CONTINUED AIRWORTHINESS (ICAs) BETWEEN PRODUCTS (AIRCRAFT, ENGINES, PROPELLERS) The aircraft/engine/propeller type-certificate holder (TCH) and, if applicable, the declarant, should ensure the availability of ICAs to allow maintenance of the aircraft, including engines/propellers when installed on the aircraft. When referring to engine/propeller ICAs directly in the aircraft ICAs, the aircraft TCH or declarant should not perform additional verification and validation. However, the integration and interface aspects between the aircraft and the engine/propeller are still under the responsibility of the aircraft TCH or declarant. If the ICAs published by the aircraft TCH or declarant include some engine/propeller ICAs developed by the engine/propeller TCH, the engine/propeller TCH should make an arrangement with the aircraft TCH setting out engine/propeller TCH and aircraft TCH or declarant shared responsibilities with respect to the ICAs under point [21L.A.9](#_DxCrossRefBm1649097761). This arrangement should: — define the part of the engine/propeller ICAs which is published in the aircraft ICAs; and — address the development, publication and update processes of these ICAs, including completeness and timely availability aspects. — The incorporated engine/propeller data content remains under the responsibility of the engine/propeller TCH, and the publication is under the responsibility of the aircraft TCH or declarant. Therefore, the aircraft TCH or declarant should coordinate with the engine/propeller TCH regarding any modification or alteration of the incorporated data. ##### GM4 21L.A.9(b) Instructions for continued airworthiness *ED Decision 2023/013/R* **INTEGRATION OF THE INSTRUCTIONS FOR CONTINUED AIRWORTHINESS (ICAs) BETWEEN PRODUCTS (AIRCRAFT, ENGINES, PROPELLERS)** The aircraft/engine/propeller type-certificate holder (TCH) and, if applicable, the declarant, should ensure the availability of ICAs to allow maintenance of the aircraft, including engines/propellers when installed on the aircraft. When referring to engine/propeller ICAs directly in the aircraft ICAs, the aircraft TCH or declarant should not perform additional verification and validation. However, the integration and interface aspects between the aircraft and the engine/propeller are still under the responsibility of the aircraft TCH or declarant. If the ICAs published by the aircraft TCH or declarant include some engine/propeller ICAs developed by the engine/propeller TCH, the engine/propeller TCH should make an arrangement with the aircraft TCH setting out engine/propeller TCH and aircraft TCH or declarant shared responsibilities with respect to the ICAs under point [21L.A.9](#_DxCrossRefBm485231257). This arrangement should: — define the part of the engine/propeller ICAs which is published in the aircraft ICAs; and — address the development, publication and update processes of these ICAs, including completeness and timely availability aspects. — The incorporated engine/propeller data content remains under the responsibility of the engine/propeller TCH, and the publication is under the responsibility of the aircraft TCH or declarant. Therefore, the aircraft TCH or declarant should coordinate with the engine/propeller TCH regarding any modification or alteration of the incorporated data.