AMCAcceptable means of compliance
AMC No 2 to 21.A.133(b) and (c) Eligibility – Link between design and production organisations
In accordance with AMC No 1 to 21.A.133(b) and (c) the POA holder must demonstrate to the competent authority that it has entered into an arrangement with the design organisation. The arrangement must be documented irrespective of whether the two organisations are separate legal entities or not. The documented arrangement must facilitate the POA holder to demonstrate compliance with the requirement of 21.A.133(b) and (c) by means of written documents agreed. In the case where the design organisation and POA holder are part of the same legal entity these interfaces may be demonstrated by company procedures accepted by the competent authority. In all other cases to define such a design/production interface the following sample format is offered:
Arrangement Sample Form
| ARRANGEMENT in accordance with 21.A.133(b) and (c) | ||
|---|---|---|
| The undersigned agree on the following commitments: | Relevant interface procedures | |
| The design organisation [NAME] takes responsibility to assure correct and timely transfer of up-to-date applicable design data (e.g., drawings, material specifications, dimensional data, processes, surface treatments, shipping conditions, quality requirements, etc.) to the production organisation approval holder [NAME] provide visible statement(s) of approved design data. | ||
| The production organisation approval holder [NAME] takes responsibility to assist the design organisation [NAME] in dealing with continuing airworthiness matter and for required actions assist the design organisation [NAME] in case of products prior to type certification in demonstrating compliance with certification specifications develop, where applicable, its own manufacturing data in compliance with the airworthiness data package. | ||
| The design organisation [NAME] and the POA holder [NAME] take joint responsibility to deal adequately with production deviations and non-conforming parts in accordance with the applicable procedures of the design organisation and the production organisation approval holder achieve adequate configuration control of manufactured parts, to enable the POA holder to make the final determination and identification for conformity. | ||
| The scope of production covered by this arrangement is detailed in [DOCUMENT REFERENCE/ATTACHED LIST] | ||
| [When the design organisation is not the same legal entity as the production organisation approval holder] Transfer of approved design data: The TC/STC/ETSO holder [NAME] acknowledges that the approved design data provided, controlled and modified in accordance with the arrangement are recognised as approved by the competent authority and therefore the parts and appliances manufactured in accordance with these data and found in a condition for safe operation may be released certifying that the item was manufactured in conformity to approved design data and is in a condition for safe operation.. | ||
| [When the design organisation is not the same legal entity as the production organisation approval holder] Direct Delivery Authorisation: This acknowledgment includes also [OR does not include] the general agreement for direct delivery to end users in order to guarantee continued airworthiness control of the released parts and appliances. | ||
| For the [NAME of the design organisation/DOA holder] Date: Signature: xx.xx.xxxx [NAME in block letters] | For the [NAME of the POA holder] Date: Signature: xx.xx.xxxx [NAME in block letters] | |
Instructions for completion: Title: The title of the relevant document must clearly indicate that it serves the purpose of a design/production interface arrangement in accordance with 21.A.133(b) and (c). Commitment: The document must include the basic commitments between the design organisation and the POA holder as addressed in AMC 21.A.4 and AMC No 1 to 21.A.133(b) and (c). Relevant Procedures: Identify an entry point into the documentary system of the organisations with respect to the implementation of the arrangement (for example a contract, quality plan, handbooks, common applicable procedures, working plans etc.). Scope of arrangement: The scope of arrangement must state by means of a list or reference to relevant documents those products, parts or appliances that are covered by the arrangement. Transfer of applicable design data: Identify the relevant procedures for the transfer of the applicable design data required by 21.A.131 and GM 21.A.131 from the design organisation to the POA holder. The means by which the design organisation advises the POA holder whether such data is approved or not approved must also be identified (ref. 21.A.4/AMC 21.A.4). Direct Delivery Authorisation: Where the design organisation and the POA holder are separate legal entities the arrangement must clearly identify whether authorisation for direct delivery to end users is permitted or not. Where any intermediate production/design organisations are involved in the chain between the original design organisation and the POA holder evidence must be available that this intermediate organisation has received authority from the design organisation to grant Direct Delivery Authorisation. Signature: AMC No 1 to 21.A.133(b) and (c) requests the identification of the responsible persons/offices who control the commitments laid down in the arrangement. Therefore the basic document must be signed mutually by the authorised representatives of the design organisation and the POA holder in this regard.
AMC — Regulation (EU) No 748/2012 · ED Decision 2012/020/R · Initial Airworthiness Easy Access Rules · EAR revision 27 Nov 2025